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{************************************************************************} |
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{ } |
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{ Borland Delphi Visual Component Library } |
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{ InterBase Express core components } |
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{ } |
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{ Copyright (c) 1998-2000 Inprise Corporation } |
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{ } |
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{ InterBase Express is based in part on the product } |
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{ Free IB Components, written by Gregory H. Deatz for } |
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{ Hoagland, Longo, Moran, Dunst & Doukas Company. } |
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{ Free IB Components is used under license. } |
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{ } |
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{ The contents of this file are subject to the InterBase } |
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{ Public License Version 1.0 (the "License"); you may not } |
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{ use this file except in compliance with the License. You } |
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{ may obtain a copy of the License at http://www.Inprise.com/IPL.html } |
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{ Software distributed under the License is distributed on } |
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{ an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either } |
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{ express or implied. See the License for the specific language } |
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{ governing rights and limitations under the License. } |
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{ The Original Code was created by InterBase Software Corporation } |
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{ and its successors. } |
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{ Portions created by Inprise Corporation are Copyright (C) Inprise } |
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{ Corporation. All Rights Reserved. } |
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{ Contributor(s): Jeff Overcash } |
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{ } |
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{ IBX For Lazarus (Firebird Express) } |
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{ Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk } |
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{ Portions created by MWA Software are copyright McCallum Whyman } |
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{ Associates Ltd 2011 - 2015 } |
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{ } |
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{************************************************************************} |
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unit IBCustomDataSet; |
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{$R-} |
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{$IFDEF FPC} |
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{$Mode Delphi} |
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{$codepage UTF8} |
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{$ENDIF} |
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{$IFDEF DELPHI} |
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{$DEFINE TDBDFIELD_IS_BCD} |
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{$ENDIF} |
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interface |
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uses |
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{$IFDEF WINDOWS } |
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Windows, |
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{$ELSE} |
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unix, |
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{$ENDIF} |
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SysUtils, Classes, IBDatabase, IBExternals, IB, IBSQL, Db, |
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IBUtils, IBBlob, IBSQLParser; |
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const |
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BufferCacheSize = 1000; { Allocate cache in this many record chunks} |
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UniCache = 2; { Uni-directional cache is 2 records big } |
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type |
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TIBCustomDataSet = class; |
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TIBDataSet = class; |
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{ TIBDataSetUpdateObject } |
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TIBDataSetUpdateObject = class(TComponent) |
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private |
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FRefreshSQL: TStrings; |
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procedure SetRefreshSQL(value: TStrings); |
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protected |
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function GetDataSet: TIBCustomDataSet; virtual; abstract; |
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procedure SetDataSet(ADataSet: TIBCustomDataSet); virtual; abstract; |
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procedure Apply(UpdateKind: TUpdateKind; buff: PChar); virtual; abstract; |
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function GetSQL(UpdateKind: TUpdateKind): TStrings; virtual; abstract; |
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procedure InternalSetParams(Query: TIBSQL; buff: PChar); |
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property DataSet: TIBCustomDataSet read GetDataSet write SetDataSet; |
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public |
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constructor Create(AOwner: TComponent); override; |
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destructor Destroy; override; |
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published |
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property RefreshSQL: TStrings read FRefreshSQL write SetRefreshSQL; |
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end; |
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TBlobDataArray = array[0..0] of TIBBlobStream; |
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PBlobDataArray = ^TBlobDataArray; |
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TIBArrayField = class; |
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{ TIBArray } |
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{Wrapper class to support array cache in TIBCustomDataset and event handling} |
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TIBArray = class |
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private |
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FArray: IArray; |
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FRecNo: integer; |
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FField: TIBArrayField; |
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procedure EventHandler(Sender: IArray; Reason: TArrayEventReason); |
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public |
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constructor Create(aField: TIBArrayField; anArray: IArray); |
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destructor Destroy; override; |
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property ArrayIntf: IArray read FArray; |
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end; |
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TArrayDataArray = array [0..0] of TIBArray; |
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PArrayDataArray = ^TArrayDataArray; |
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{ TIBCustomDataSet } |
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TCachedUpdateStatus = ( |
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cusUnmodified, cusModified, cusInserted, |
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cusDeleted, cusUninserted |
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); |
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TIBDBKey = record |
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DBKey: array[0..7] of Byte; |
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end; |
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PIBDBKey = ^TIBDBKey; |
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PFieldData = ^TFieldData; |
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TFieldData = record |
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fdIsNull: Boolean; |
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fdDataLength: Short; |
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end; |
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PColumnData = ^TColumnData; |
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TColumnData = record |
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fdDataType: Short; |
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fdDataScale: Short; |
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fdNullable: Boolean; |
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fdDataSize: Short; |
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fdDataOfs: Integer; |
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fdCodePage: TSystemCodePage; |
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end; |
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PFieldColumns = ^TFieldColumns; |
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TFieldColumns = array[1..1] of TColumnData; |
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TRecordData = record |
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rdBookmarkFlag: TBookmarkFlag; |
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rdFieldCount: Short; |
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rdRecordNumber: Integer; |
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rdCachedUpdateStatus: TCachedUpdateStatus; |
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rdUpdateStatus: TUpdateStatus; |
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rdSavedOffset: DWORD; |
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rdDBKey: TIBDBKey; |
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rdFields: array[1..1] of TFieldData; |
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end; |
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PRecordData = ^TRecordData; |
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{ TIBArrayField } |
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TIBArrayField = class(TField) |
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private |
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FArrayBounds: TArrayBounds; |
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FArrayDimensions: integer; |
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FRelationName: string; |
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FCacheOffset: word; |
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function GetArrayID: TISC_QUAD; |
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function GetArrayIntf: IArray; |
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procedure SetArrayIntf(AValue: IArray); |
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protected |
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class procedure CheckTypeSize(AValue: Longint); override; |
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function GetAsString: string; override; |
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function GetDataSize: Integer; override; |
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procedure Bind(Binding: Boolean); override; |
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public |
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constructor Create(AOwner: TComponent); override; |
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function CreateArray: IArray; |
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property ArrayID: TISC_QUAD read GetArrayID; |
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property ArrayIntf: IArray read GetArrayIntf write SetArrayIntf; |
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property ArrayDimensions: integer read FArrayDimensions write FArrayDimensions; |
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property ArrayBounds: TArrayBounds read FArrayBounds write FArrayBounds; |
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end; |
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{ TIBStringField allows us to have strings longer than 8196 } |
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TIBStringField = class(TStringField) |
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private |
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FCharacterSetName: RawByteString; |
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FCharacterSetSize: integer; |
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FAutoFieldSize: boolean; |
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FCodePage: TSystemCodePage; |
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protected |
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procedure Bind(Binding: Boolean); override; |
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function GetDataSize: Integer; override; |
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public |
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constructor Create(aOwner: TComponent); override; |
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class procedure CheckTypeSize(Value: Integer); override; |
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function GetAsString: string; override; |
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function GetAsVariant: Variant; override; |
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function GetValue(var Value: string): Boolean; |
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procedure SetAsString(const Value: string); override; |
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property CharacterSetName: RawByteString read FCharacterSetName write FCharacterSetName; |
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property CharacterSetSize: integer read FCharacterSetSize write FCharacterSetSize; |
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property CodePage: TSystemCodePage read FCodePage write FCodePage; |
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published |
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property AutoFieldSize: boolean read FAutoFieldSize write FAutoFieldSize default true; |
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end; |
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{ TIBBCDField } |
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{ Actually, there is no BCD involved in this type, |
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instead it deals with currency types. |
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In IB, this is an encapsulation of Numeric (x, y) |
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where x < 18 and y <= 4. |
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Note: y > 4 will default to Floats |
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} |
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TIBBCDField = class(TBCDField) |
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protected |
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class procedure CheckTypeSize(Value: Integer); override; |
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function GetAsCurrency: Currency; override; |
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function GetAsString: string; override; |
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function GetAsVariant: Variant; override; |
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function GetDataSize: Integer; override; |
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public |
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constructor Create(AOwner: TComponent); override; |
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published |
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property Size default 8; |
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end; |
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{TIBMemoField} |
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{Allows us to show truncated text in DBGrids and anything else that uses |
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DisplayText} |
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TIBMemoField = class(TMemoField) |
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private |
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FCharacterSetName: RawByteString; |
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FCharacterSetSize: integer; |
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FDisplayTextAsClassName: boolean; |
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function GetTruncatedText: string; |
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protected |
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procedure Bind(Binding: Boolean); override; |
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function GetAsString: string; override; |
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function GetDefaultWidth: Longint; override; |
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procedure GetText(var AText: string; ADisplayText: Boolean); override; |
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procedure SetAsString(const AValue: string); override; |
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public |
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constructor Create(AOwner: TComponent); override; |
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property CharacterSetName: RawByteString read FCharacterSetName write FCharacterSetName; |
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property CharacterSetSize: integer read FCharacterSetSize write FCharacterSetSize; |
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published |
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property DisplayTextAsClassName: boolean read FDisplayTextAsClassName |
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write FDisplayTextAsClassName; |
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private |
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FCodePage: TSystemCodePage; |
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FFCodePage: TSystemCodePage; |
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public |
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property CodePage: TSystemCodePage read FFCodePage write FFCodePage; |
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end; |
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TIBDataLink = class(TDetailDataLink) |
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private |
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FDataSet: TIBCustomDataSet; |
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protected |
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procedure ActiveChanged; override; |
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procedure RecordChanged(Field: TField); override; |
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function GetDetailDataSet: TDataSet; override; |
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procedure CheckBrowseMode; override; |
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public |
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constructor Create(ADataSet: TIBCustomDataSet); |
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destructor Destroy; override; |
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end; |
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TIBGeneratorApplyOnEvent = (gaeOnNewRecord,gaeOnPostRecord); |
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{ TIBGenerator } |
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TIBGenerator = class(TPersistent) |
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private |
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FOwner: TIBCustomDataSet; |
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FApplyOnEvent: TIBGeneratorApplyOnEvent; |
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FFieldName: string; |
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FGeneratorName: string; |
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FIncrement: integer; |
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procedure SetIncrement(const AValue: integer); |
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protected |
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function GetNextValue(ADatabase: TIBDatabase; ATransaction: TIBTransaction): integer; |
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public |
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constructor Create(Owner: TIBCustomDataSet); |
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procedure Apply; |
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property Owner: TIBCustomDataSet read FOwner; |
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published |
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property Generator: string read FGeneratorName write FGeneratorName; |
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property Field: string read FFieldName write FFieldName; |
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property Increment: integer read FIncrement write SetIncrement default 1; |
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property ApplyOnEvent: TIBGeneratorApplyOnEvent read FApplyOnEvent write FApplyOnEvent; |
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end; |
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{TIBControlLink - Allows IB Aware controls to react to dataset state changes} |
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TIBControlLink = class |
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private |
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FTIBDataSet: TIBCustomDataSet; |
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procedure SetIBDataSet(AValue: TIBCustomDataSet); |
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protected |
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procedure UpdateSQL(Sender: TObject); virtual; |
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procedure UpdateParams(Sender: TObject); virtual; |
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public |
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destructor Destroy; override; |
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property IBDataSet: TIBCustomDataSet read FTIBDataSet write SetIBDataSet; |
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end; |
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TIBAutoCommit = (acDisabled, acCommitRetaining); |
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{ TIBCustomDataSet } |
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TIBUpdateAction = (uaFail, uaAbort, uaSkip, uaRetry, uaApply, uaApplied); |
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TIBUpdateErrorEvent = procedure(DataSet: TDataSet; E: EDatabaseError; |
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UpdateKind: TUpdateKind; var TheUpdateAction: TIBUpdateAction) |
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of object; |
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TIBUpdateRecordEvent = procedure(DataSet: TDataSet; UpdateKind: TUpdateKind; |
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var UpdateAction: TIBUpdateAction) of object; |
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TIBUpdateRecordTypes = set of TCachedUpdateStatus; |
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TDataSetCloseAction = (dcDiscardChanges, dcSaveChanges); |
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TOnValidatePost = procedure (Sender: TObject; var CancelPost: boolean) of object; |
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TIBCustomDataSet = class(TDataset) |
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private |
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FAllowAutoActivateTransaction: Boolean; |
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FArrayFieldCount: integer; |
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FArrayCacheOffset: integer; |
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FAutoCommit: TIBAutoCommit; |
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FGenerateParamNames: Boolean; |
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FGeneratorField: TIBGenerator; |
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FNeedsRefresh: Boolean; |
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FForcedRefresh: Boolean; |
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FDidActivate: Boolean; |
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FBase: TIBBase; |
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FBlobCacheOffset: Integer; |
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FBlobStreamList: TList; |
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FArrayList: TList; |
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FBufferChunks: Integer; |
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FBufferCache, |
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FOldBufferCache: PChar; |
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FBufferChunkSize, |
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FCacheSize, |
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FOldCacheSize: Integer; |
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FFilterBuffer: PChar; |
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FBPos, |
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FOBPos, |
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FBEnd, |
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FOBEnd: DWord; |
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FCachedUpdates: Boolean; |
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FCalcFieldsOffset: Integer; |
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FCurrentRecord: Long; |
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FDeletedRecords: Long; |
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FModelBuffer, |
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FOldBuffer: PChar; |
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FOnValidatePost: TOnValidatePost; |
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FOpen: Boolean; |
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FInternalPrepared: Boolean; |
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FQDelete, |
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FQInsert, |
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FQRefresh, |
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FQSelect, |
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FQModify: TIBSQL; |
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FRecordBufferSize: Integer; |
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FRecordCount: Integer; |
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FRecordSize: Integer; |
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FDataSetCloseAction: TDataSetCloseAction; |
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FUniDirectional: Boolean; |
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FUpdateMode: TUpdateMode; |
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FUpdateObject: TIBDataSetUpdateObject; |
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FParamCheck: Boolean; |
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FUpdatesPending: Boolean; |
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FUpdateRecordTypes: TIBUpdateRecordTypes; |
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|
FMappedFieldPosition: array of Integer; |
| 372 |
|
|
FDataLink: TIBDataLink; |
| 373 |
|
|
|
| 374 |
|
|
FBeforeDatabaseDisconnect, |
| 375 |
|
|
FAfterDatabaseDisconnect, |
| 376 |
|
|
FDatabaseFree: TNotifyEvent; |
| 377 |
|
|
FOnUpdateError: TIBUpdateErrorEvent; |
| 378 |
|
|
FOnUpdateRecord: TIBUpdateRecordEvent; |
| 379 |
|
|
FBeforeTransactionEnd, |
| 380 |
|
|
FAfterTransactionEnd, |
| 381 |
|
|
FTransactionFree: TNotifyEvent; |
| 382 |
|
|
FAliasNameMap: array of string; |
| 383 |
|
|
FAliasNameList: array of string; |
| 384 |
|
|
FBaseSQLSelect: TStrings; |
| 385 |
|
|
FParser: TSelectSQLParser; |
| 386 |
|
|
FCloseAction: TTransactionAction; |
| 387 |
|
|
FInTransactionEnd: boolean; |
| 388 |
|
|
FIBLinks: TList; |
| 389 |
tony |
45 |
FFieldColumns: PFieldColumns; |
| 390 |
|
|
procedure InitModelBuffer(Qry: TIBSQL; Buffer: PChar); |
| 391 |
|
|
function GetSelectStmtIntf: IStatement; |
| 392 |
tony |
33 |
procedure SetUpdateMode(const Value: TUpdateMode); |
| 393 |
|
|
procedure SetUpdateObject(Value: TIBDataSetUpdateObject); |
| 394 |
|
|
|
| 395 |
|
|
function AdjustCurrentRecord(Buffer: Pointer; GetMode: TGetMode): TGetResult; |
| 396 |
|
|
procedure AdjustRecordOnInsert(Buffer: Pointer); |
| 397 |
|
|
function CanEdit: Boolean; |
| 398 |
|
|
function CanInsert: Boolean; |
| 399 |
|
|
function CanDelete: Boolean; |
| 400 |
|
|
function CanRefresh: Boolean; |
| 401 |
|
|
procedure CheckEditState; |
| 402 |
|
|
procedure ClearBlobCache; |
| 403 |
tony |
45 |
procedure ClearArrayCache; |
| 404 |
tony |
33 |
procedure ClearIBLinks; |
| 405 |
|
|
procedure CopyRecordBuffer(Source, Dest: Pointer); |
| 406 |
|
|
procedure DoBeforeDatabaseDisconnect(Sender: TObject); |
| 407 |
|
|
procedure DoAfterDatabaseDisconnect(Sender: TObject); |
| 408 |
|
|
procedure DoDatabaseFree(Sender: TObject); |
| 409 |
|
|
procedure DoBeforeTransactionEnd(Sender: TObject; Action: TTransactionAction); |
| 410 |
|
|
procedure DoAfterTransactionEnd(Sender: TObject); |
| 411 |
|
|
procedure DoTransactionFree(Sender: TObject); |
| 412 |
|
|
procedure FetchCurrentRecordToBuffer(Qry: TIBSQL; RecordNumber: Integer; |
| 413 |
|
|
Buffer: PChar); |
| 414 |
|
|
function GetDatabase: TIBDatabase; |
| 415 |
|
|
function GetDeleteSQL: TStrings; |
| 416 |
|
|
function GetInsertSQL: TStrings; |
| 417 |
tony |
45 |
function GetSQLParams: ISQLParams; |
| 418 |
tony |
33 |
function GetRefreshSQL: TStrings; |
| 419 |
|
|
function GetSelectSQL: TStrings; |
| 420 |
tony |
45 |
function GetStatementType: TIBSQLStatementTypes; |
| 421 |
tony |
33 |
function GetModifySQL: TStrings; |
| 422 |
|
|
function GetTransaction: TIBTransaction; |
| 423 |
|
|
function GetParser: TSelectSQLParser; |
| 424 |
|
|
procedure InternalDeleteRecord(Qry: TIBSQL; Buff: Pointer); virtual; |
| 425 |
|
|
function InternalLocate(const KeyFields: string; const KeyValues: Variant; |
| 426 |
|
|
Options: TLocateOptions): Boolean; virtual; |
| 427 |
|
|
procedure InternalPostRecord(Qry: TIBSQL; Buff: Pointer); virtual; |
| 428 |
|
|
procedure InternalRevertRecord(RecordNumber: Integer); virtual; |
| 429 |
|
|
function IsVisible(Buffer: PChar): Boolean; |
| 430 |
|
|
procedure RegisterIBLink(Sender: TIBControlLink); |
| 431 |
|
|
procedure UnRegisterIBLink(Sender: TIBControlLink); |
| 432 |
|
|
procedure SaveOldBuffer(Buffer: PChar); |
| 433 |
|
|
procedure SetBufferChunks(Value: Integer); |
| 434 |
|
|
procedure SetDatabase(Value: TIBDatabase); |
| 435 |
|
|
procedure SetDeleteSQL(Value: TStrings); |
| 436 |
|
|
procedure SetInsertSQL(Value: TStrings); |
| 437 |
|
|
procedure SetInternalSQLParams(Qry: TIBSQL; Buffer: Pointer); |
| 438 |
|
|
procedure SetRefreshSQL(Value: TStrings); |
| 439 |
|
|
procedure SetSelectSQL(Value: TStrings); |
| 440 |
|
|
procedure SetModifySQL(Value: TStrings); |
| 441 |
|
|
procedure SetTransaction(Value: TIBTransaction); |
| 442 |
|
|
procedure SetUpdateRecordTypes(Value: TIBUpdateRecordTypes); |
| 443 |
|
|
procedure SetUniDirectional(Value: Boolean); |
| 444 |
|
|
procedure RefreshParams; |
| 445 |
|
|
function AdjustPosition(FCache: PChar; Offset: DWORD; |
| 446 |
|
|
Origin: Integer): DWORD; |
| 447 |
|
|
procedure ReadCache(FCache: PChar; Offset: DWORD; Origin: Integer; |
| 448 |
|
|
Buffer: PChar); |
| 449 |
|
|
procedure ReadRecordCache(RecordNumber: Integer; Buffer: PChar; |
| 450 |
|
|
ReadOldBuffer: Boolean); |
| 451 |
|
|
procedure WriteCache(FCache: PChar; Offset: DWORD; Origin: Integer; |
| 452 |
|
|
Buffer: PChar); |
| 453 |
|
|
procedure WriteRecordCache(RecordNumber: Integer; Buffer: PChar); |
| 454 |
|
|
function InternalGetRecord(Buffer: PChar; GetMode: TGetMode; |
| 455 |
|
|
DoCheck: Boolean): TGetResult; virtual; |
| 456 |
|
|
|
| 457 |
|
|
protected |
| 458 |
|
|
procedure ActivateConnection; |
| 459 |
|
|
function ActivateTransaction: Boolean; |
| 460 |
|
|
procedure DeactivateTransaction; |
| 461 |
|
|
procedure CheckDatasetClosed; |
| 462 |
|
|
procedure CheckDatasetOpen; |
| 463 |
|
|
function CreateParser: TSelectSQLParser; virtual; |
| 464 |
|
|
procedure FieldDefsFromQuery(SourceQuery: TIBSQL); |
| 465 |
|
|
function GetActiveBuf: PChar; |
| 466 |
|
|
procedure InternalBatchInput(InputObject: TIBBatchInput); virtual; |
| 467 |
|
|
procedure InternalBatchOutput(OutputObject: TIBBatchOutput); virtual; |
| 468 |
|
|
procedure InternalPrepare; virtual; |
| 469 |
|
|
procedure InternalUnPrepare; virtual; |
| 470 |
|
|
procedure InternalExecQuery; virtual; |
| 471 |
|
|
procedure InternalRefreshRow; virtual; |
| 472 |
|
|
procedure InternalSetParamsFromCursor; virtual; |
| 473 |
|
|
procedure CheckNotUniDirectional; |
| 474 |
tony |
35 |
procedure SQLChanging(Sender: TObject); virtual; |
| 475 |
|
|
procedure SQLChanged(Sender: TObject); virtual; |
| 476 |
tony |
33 |
|
| 477 |
tony |
45 |
{ IProviderSupport } |
| 478 |
tony |
33 |
procedure PSEndTransaction(Commit: Boolean); override; |
| 479 |
|
|
function PSExecuteStatement(const ASQL: string; AParams: TParams; |
| 480 |
|
|
ResultSet: Pointer = nil): Integer; override; |
| 481 |
|
|
function PsGetTableName: string; override; |
| 482 |
|
|
function PSGetQuoteChar: string; override; |
| 483 |
|
|
function PSGetUpdateException(E: Exception; Prev: EUpdateError): EUpdateError; override; |
| 484 |
|
|
function PSInTransaction: Boolean; override; |
| 485 |
|
|
function PSIsSQLBased: Boolean; override; |
| 486 |
|
|
function PSIsSQLSupported: Boolean; override; |
| 487 |
|
|
procedure PSStartTransaction; override; |
| 488 |
|
|
procedure PSReset; override; |
| 489 |
|
|
function PSUpdateRecord(UpdateKind: TUpdateKind; Delta: TDataSet): Boolean; override; |
| 490 |
tony |
45 |
|
| 491 |
tony |
33 |
{ TDataSet support } |
| 492 |
|
|
procedure InternalInsert; override; |
| 493 |
|
|
procedure InitRecord(Buffer: PChar); override; |
| 494 |
|
|
procedure Disconnect; virtual; |
| 495 |
|
|
function ConstraintsStored: Boolean; |
| 496 |
|
|
procedure ClearCalcFields(Buffer: PChar); override; |
| 497 |
|
|
function AllocRecordBuffer: PChar; override; |
| 498 |
|
|
procedure DoBeforeDelete; override; |
| 499 |
|
|
procedure DoAfterDelete; override; |
| 500 |
|
|
procedure DoBeforeEdit; override; |
| 501 |
|
|
procedure DoAfterEdit; override; |
| 502 |
|
|
procedure DoBeforeInsert; override; |
| 503 |
|
|
procedure DoAfterInsert; override; |
| 504 |
|
|
procedure DoBeforeClose; override; |
| 505 |
|
|
procedure DoBeforeOpen; override; |
| 506 |
|
|
procedure DoBeforePost; override; |
| 507 |
|
|
procedure DoAfterPost; override; |
| 508 |
|
|
procedure FreeRecordBuffer(var Buffer: PChar); override; |
| 509 |
|
|
procedure GetBookmarkData(Buffer: PChar; Data: Pointer); override; |
| 510 |
|
|
function GetBookmarkFlag(Buffer: PChar): TBookmarkFlag; override; |
| 511 |
|
|
function GetCanModify: Boolean; override; |
| 512 |
|
|
function GetDataSource: TDataSource; override; |
| 513 |
|
|
function GetDBAliasName(FieldNo: integer): string; |
| 514 |
|
|
function GetFieldDefFromAlias(aliasName: string): TFieldDef; |
| 515 |
|
|
function GetFieldClass(FieldType: TFieldType): TFieldClass; override; |
| 516 |
|
|
function GetRecNo: Integer; override; |
| 517 |
|
|
function GetRecord(Buffer: PChar; GetMode: TGetMode; |
| 518 |
|
|
DoCheck: Boolean): TGetResult; override; |
| 519 |
|
|
function GetRecordCount: Integer; override; |
| 520 |
|
|
function GetRecordSize: Word; override; |
| 521 |
|
|
procedure InternalAutoCommit; |
| 522 |
|
|
procedure InternalAddRecord(Buffer: Pointer; Append: Boolean); override; |
| 523 |
|
|
procedure InternalCancel; override; |
| 524 |
|
|
procedure InternalClose; override; |
| 525 |
|
|
procedure InternalDelete; override; |
| 526 |
|
|
procedure InternalFirst; override; |
| 527 |
|
|
function InternalGetFieldData(Field: TField; Buffer: Pointer): Boolean; virtual; |
| 528 |
|
|
procedure InternalGotoBookmark(Bookmark: Pointer); override; |
| 529 |
|
|
procedure InternalHandleException; override; |
| 530 |
|
|
procedure InternalInitFieldDefs; override; |
| 531 |
|
|
procedure InternalInitRecord(Buffer: PChar); override; |
| 532 |
|
|
procedure InternalLast; override; |
| 533 |
|
|
procedure InternalOpen; override; |
| 534 |
|
|
procedure InternalPost; override; |
| 535 |
|
|
procedure InternalRefresh; override; |
| 536 |
|
|
procedure InternalSetFieldData(Field: TField; Buffer: Pointer); virtual; |
| 537 |
|
|
procedure InternalSetToRecord(Buffer: PChar); override; |
| 538 |
|
|
function IsCursorOpen: Boolean; override; |
| 539 |
|
|
procedure Loaded; override; |
| 540 |
|
|
procedure ReQuery; |
| 541 |
|
|
procedure SetBookmarkFlag(Buffer: PChar; Value: TBookmarkFlag); override; |
| 542 |
|
|
procedure SetBookmarkData(Buffer: PChar; Data: Pointer); override; |
| 543 |
|
|
procedure SetCachedUpdates(Value: Boolean); |
| 544 |
|
|
procedure SetDataSource(Value: TDataSource); |
| 545 |
|
|
procedure SetGenerateParamNames(AValue: Boolean); virtual; |
| 546 |
|
|
procedure SetFieldData(Field : TField; Buffer : Pointer); override; |
| 547 |
|
|
procedure SetFieldData(Field : TField; Buffer : Pointer; |
| 548 |
|
|
NativeFormat : Boolean); overload; override; |
| 549 |
|
|
procedure SetRecNo(Value: Integer); override; |
| 550 |
|
|
|
| 551 |
|
|
protected |
| 552 |
|
|
{Likely to be made public by descendant classes} |
| 553 |
|
|
property AutoCommit: TIBAutoCommit read FAutoCommit write FAutoCommit default acDisabled; |
| 554 |
tony |
45 |
property SQLParams: ISQLParams read GetSQLParams; |
| 555 |
|
|
property Params: ISQLParams read GetSQLParams; |
| 556 |
tony |
33 |
property InternalPrepared: Boolean read FInternalPrepared; |
| 557 |
|
|
property QDelete: TIBSQL read FQDelete; |
| 558 |
|
|
property QInsert: TIBSQL read FQInsert; |
| 559 |
|
|
property QRefresh: TIBSQL read FQRefresh; |
| 560 |
|
|
property QSelect: TIBSQL read FQSelect; |
| 561 |
|
|
property QModify: TIBSQL read FQModify; |
| 562 |
tony |
45 |
property StatementType: TIBSQLStatementTypes read GetStatementType; |
| 563 |
|
|
property SelectStmtHandle: IStatement read GetSelectStmtIntf; |
| 564 |
tony |
33 |
|
| 565 |
|
|
{Likely to be made published by descendant classes} |
| 566 |
|
|
property BufferChunks: Integer read FBufferChunks write SetBufferChunks; |
| 567 |
|
|
property CachedUpdates: Boolean read FCachedUpdates write SetCachedUpdates; |
| 568 |
|
|
property UniDirectional: Boolean read FUniDirectional write SetUniDirectional default False; |
| 569 |
|
|
property GeneratorField: TIBGenerator read FGeneratorField write FGeneratorField; |
| 570 |
|
|
property DeleteSQL: TStrings read GetDeleteSQL write SetDeleteSQL; |
| 571 |
|
|
property InsertSQL: TStrings read GetInsertSQL write SetInsertSQL; |
| 572 |
|
|
property RefreshSQL: TStrings read GetRefreshSQL write SetRefreshSQL; |
| 573 |
|
|
property SelectSQL: TStrings read GetSelectSQL write SetSelectSQL; |
| 574 |
|
|
property ModifySQL: TStrings read GetModifySQL write SetModifySQL; |
| 575 |
|
|
property UpdateMode: TUpdateMode read FUpdateMode write SetUpdateMode default upWhereAll; |
| 576 |
|
|
property ParamCheck: Boolean read FParamCheck write FParamCheck default True; |
| 577 |
|
|
property Parser: TSelectSQLParser read GetParser; |
| 578 |
|
|
property BaseSQLSelect: TStrings read FBaseSQLSelect; |
| 579 |
|
|
|
| 580 |
|
|
property BeforeDatabaseDisconnect: TNotifyEvent read FBeforeDatabaseDisconnect |
| 581 |
|
|
write FBeforeDatabaseDisconnect; |
| 582 |
|
|
property AfterDatabaseDisconnect: TNotifyEvent read FAfterDatabaseDisconnect |
| 583 |
|
|
write FAfterDatabaseDisconnect; |
| 584 |
|
|
property DatabaseFree: TNotifyEvent read FDatabaseFree |
| 585 |
|
|
write FDatabaseFree; |
| 586 |
|
|
property BeforeTransactionEnd: TNotifyEvent read FBeforeTransactionEnd |
| 587 |
|
|
write FBeforeTransactionEnd; |
| 588 |
|
|
property AfterTransactionEnd: TNotifyEvent read FAfterTransactionEnd |
| 589 |
|
|
write FAfterTransactionEnd; |
| 590 |
|
|
property TransactionFree: TNotifyEvent read FTransactionFree |
| 591 |
|
|
write FTransactionFree; |
| 592 |
|
|
property OnValidatePost: TOnValidatePost read FOnValidatePost write FOnValidatePost; |
| 593 |
|
|
|
| 594 |
|
|
public |
| 595 |
|
|
constructor Create(AOwner: TComponent); override; |
| 596 |
|
|
destructor Destroy; override; |
| 597 |
|
|
procedure ApplyUpdates; |
| 598 |
|
|
function CachedUpdateStatus: TCachedUpdateStatus; |
| 599 |
|
|
procedure CancelUpdates; |
| 600 |
|
|
function GetFieldPosition(AliasName: string): integer; |
| 601 |
|
|
procedure FetchAll; |
| 602 |
|
|
function LocateNext(const KeyFields: string; const KeyValues: Variant; |
| 603 |
|
|
Options: TLocateOptions): Boolean; |
| 604 |
|
|
procedure RecordModified(Value: Boolean); |
| 605 |
|
|
procedure RevertRecord; |
| 606 |
|
|
procedure Undelete; |
| 607 |
tony |
35 |
procedure ResetParser; virtual; |
| 608 |
tony |
33 |
function HasParser: boolean; |
| 609 |
|
|
|
| 610 |
|
|
{ TDataSet support methods } |
| 611 |
|
|
function BookmarkValid(Bookmark: TBookmark): Boolean; override; |
| 612 |
|
|
function CompareBookmarks(Bookmark1, Bookmark2: TBookmark): Integer; override; |
| 613 |
|
|
function CreateBlobStream(Field: TField; Mode: TBlobStreamMode): TStream; override; |
| 614 |
tony |
45 |
function GetArray(Field: TIBArrayField): IArray; |
| 615 |
|
|
procedure SetArrayIntf(AnArray: IArray; Field: TIBArrayField); |
| 616 |
tony |
33 |
function GetCurrentRecord(Buffer: PChar): Boolean; override; |
| 617 |
|
|
function GetFieldData(Field : TField; Buffer : Pointer) : Boolean; overload; override; |
| 618 |
|
|
function GetFieldData(FieldNo: Integer; Buffer: Pointer): Boolean; overload; (*override;*) |
| 619 |
|
|
function GetFieldData(Field : TField; Buffer : Pointer; |
| 620 |
|
|
NativeFormat : Boolean) : Boolean; overload; override; |
| 621 |
|
|
property GenerateParamNames: Boolean read FGenerateParamNames write SetGenerateParamNames; |
| 622 |
|
|
function Locate(const KeyFields: string; const KeyValues: Variant; |
| 623 |
|
|
Options: TLocateOptions): Boolean; override; |
| 624 |
|
|
function Lookup(const KeyFields: string; const KeyValues: Variant; |
| 625 |
|
|
const ResultFields: string): Variant; override; |
| 626 |
|
|
function UpdateStatus: TUpdateStatus; override; |
| 627 |
|
|
function IsSequenced: Boolean; override; |
| 628 |
|
|
procedure Post; override; |
| 629 |
tony |
45 |
function ParamByName(ParamName: String): ISQLParam; |
| 630 |
|
|
property ArrayFieldCount: integer read FArrayFieldCount; |
| 631 |
tony |
33 |
property UpdateObject: TIBDataSetUpdateObject read FUpdateObject write SetUpdateObject; |
| 632 |
|
|
property UpdatesPending: Boolean read FUpdatesPending; |
| 633 |
|
|
property UpdateRecordTypes: TIBUpdateRecordTypes read FUpdateRecordTypes |
| 634 |
|
|
write SetUpdateRecordTypes; |
| 635 |
|
|
property DataSetCloseAction: TDataSetCloseAction |
| 636 |
|
|
read FDataSetCloseAction write FDataSetCloseAction; |
| 637 |
|
|
|
| 638 |
|
|
published |
| 639 |
tony |
45 |
property AllowAutoActivateTransaction: Boolean read FAllowAutoActivateTransaction |
| 640 |
|
|
write FAllowAutoActivateTransaction; |
| 641 |
tony |
33 |
property Database: TIBDatabase read GetDatabase write SetDatabase; |
| 642 |
|
|
property Transaction: TIBTransaction read GetTransaction |
| 643 |
|
|
write SetTransaction; |
| 644 |
|
|
property ForcedRefresh: Boolean read FForcedRefresh |
| 645 |
|
|
write FForcedRefresh default False; |
| 646 |
|
|
property AutoCalcFields; |
| 647 |
|
|
|
| 648 |
|
|
property AfterCancel; |
| 649 |
|
|
property AfterClose; |
| 650 |
|
|
property AfterDelete; |
| 651 |
|
|
property AfterEdit; |
| 652 |
|
|
property AfterInsert; |
| 653 |
|
|
property AfterOpen; |
| 654 |
|
|
property AfterPost; |
| 655 |
|
|
property AfterRefresh; |
| 656 |
|
|
property AfterScroll; |
| 657 |
|
|
property BeforeCancel; |
| 658 |
|
|
property BeforeClose; |
| 659 |
|
|
property BeforeDelete; |
| 660 |
|
|
property BeforeEdit; |
| 661 |
|
|
property BeforeInsert; |
| 662 |
|
|
property BeforeOpen; |
| 663 |
|
|
property BeforePost; |
| 664 |
|
|
property BeforeRefresh; |
| 665 |
|
|
property BeforeScroll; |
| 666 |
|
|
property OnCalcFields; |
| 667 |
|
|
property OnDeleteError; |
| 668 |
|
|
property OnEditError; |
| 669 |
|
|
property OnNewRecord; |
| 670 |
|
|
property OnPostError; |
| 671 |
|
|
property OnUpdateError: TIBUpdateErrorEvent read FOnUpdateError |
| 672 |
|
|
write FOnUpdateError; |
| 673 |
|
|
property OnUpdateRecord: TIBUpdateRecordEvent read FOnUpdateRecord |
| 674 |
|
|
write FOnUpdateRecord; |
| 675 |
|
|
end; |
| 676 |
|
|
|
| 677 |
|
|
TIBParserDataSet = class(TIBCustomDataSet) |
| 678 |
|
|
public |
| 679 |
|
|
property Parser; |
| 680 |
|
|
end; |
| 681 |
|
|
|
| 682 |
|
|
TIBDataSet = class(TIBParserDataSet) |
| 683 |
|
|
private |
| 684 |
|
|
function GetPrepared: Boolean; |
| 685 |
|
|
|
| 686 |
|
|
protected |
| 687 |
|
|
procedure SetFiltered(Value: Boolean); override; |
| 688 |
|
|
procedure InternalOpen; override; |
| 689 |
|
|
|
| 690 |
|
|
public |
| 691 |
|
|
procedure Prepare; |
| 692 |
|
|
procedure UnPrepare; |
| 693 |
|
|
procedure BatchInput(InputObject: TIBBatchInput); |
| 694 |
|
|
procedure BatchOutput(OutputObject: TIBBatchOutput); |
| 695 |
|
|
procedure ExecSQL; |
| 696 |
|
|
|
| 697 |
|
|
public |
| 698 |
|
|
property Params; |
| 699 |
|
|
property Prepared : Boolean read GetPrepared; |
| 700 |
|
|
property QDelete; |
| 701 |
|
|
property QInsert; |
| 702 |
|
|
property QRefresh; |
| 703 |
|
|
property QSelect; |
| 704 |
|
|
property QModify; |
| 705 |
|
|
property StatementType; |
| 706 |
|
|
property SelectStmtHandle; |
| 707 |
|
|
property BaseSQLSelect; |
| 708 |
|
|
|
| 709 |
|
|
published |
| 710 |
|
|
{ TIBCustomDataSet } |
| 711 |
|
|
property AutoCommit; |
| 712 |
|
|
property BufferChunks; |
| 713 |
|
|
property CachedUpdates; |
| 714 |
|
|
property DeleteSQL; |
| 715 |
|
|
property InsertSQL; |
| 716 |
|
|
property RefreshSQL; |
| 717 |
|
|
property SelectSQL; |
| 718 |
|
|
property ModifySQL; |
| 719 |
|
|
property GeneratorField; |
| 720 |
|
|
property GenerateParamNames; |
| 721 |
|
|
property ParamCheck; |
| 722 |
|
|
property UniDirectional; |
| 723 |
|
|
property Filtered; |
| 724 |
|
|
property DataSetCloseAction; |
| 725 |
|
|
|
| 726 |
|
|
property BeforeDatabaseDisconnect; |
| 727 |
|
|
property AfterDatabaseDisconnect; |
| 728 |
|
|
property DatabaseFree; |
| 729 |
|
|
property BeforeTransactionEnd; |
| 730 |
|
|
property AfterTransactionEnd; |
| 731 |
|
|
property TransactionFree; |
| 732 |
|
|
|
| 733 |
|
|
{ TIBDataSet } |
| 734 |
|
|
property Active; |
| 735 |
|
|
property AutoCalcFields; |
| 736 |
|
|
property DataSource read GetDataSource write SetDataSource; |
| 737 |
|
|
|
| 738 |
|
|
property AfterCancel; |
| 739 |
|
|
property AfterClose; |
| 740 |
|
|
property AfterDelete; |
| 741 |
|
|
property AfterEdit; |
| 742 |
|
|
property AfterInsert; |
| 743 |
|
|
property AfterOpen; |
| 744 |
|
|
property AfterPost; |
| 745 |
|
|
property AfterScroll; |
| 746 |
|
|
property BeforeCancel; |
| 747 |
|
|
property BeforeClose; |
| 748 |
|
|
property BeforeDelete; |
| 749 |
|
|
property BeforeEdit; |
| 750 |
|
|
property BeforeInsert; |
| 751 |
|
|
property BeforeOpen; |
| 752 |
|
|
property BeforePost; |
| 753 |
|
|
property BeforeScroll; |
| 754 |
|
|
property OnCalcFields; |
| 755 |
|
|
property OnDeleteError; |
| 756 |
|
|
property OnEditError; |
| 757 |
|
|
property OnFilterRecord; |
| 758 |
|
|
property OnNewRecord; |
| 759 |
|
|
property OnPostError; |
| 760 |
|
|
property OnValidatePost; |
| 761 |
|
|
end; |
| 762 |
|
|
|
| 763 |
|
|
{ TIBDSBlobStream } |
| 764 |
|
|
TIBDSBlobStream = class(TStream) |
| 765 |
|
|
private |
| 766 |
|
|
FHasWritten: boolean; |
| 767 |
|
|
protected |
| 768 |
|
|
FField: TField; |
| 769 |
|
|
FBlobStream: TIBBlobStream; |
| 770 |
tony |
41 |
function GetSize: Int64; override; |
| 771 |
tony |
33 |
public |
| 772 |
|
|
constructor Create(AField: TField; ABlobStream: TIBBlobStream; |
| 773 |
|
|
Mode: TBlobStreamMode); |
| 774 |
|
|
destructor Destroy; override; |
| 775 |
|
|
function Read(var Buffer; Count: Longint): Longint; override; |
| 776 |
|
|
function Seek(Offset: Longint; Origin: Word): Longint; override; |
| 777 |
|
|
procedure SetSize(NewSize: Longint); override; |
| 778 |
|
|
function Write(const Buffer; Count: Longint): Longint; override; |
| 779 |
|
|
end; |
| 780 |
|
|
|
| 781 |
tony |
45 |
{Extended Field Def for character set info} |
| 782 |
|
|
|
| 783 |
|
|
{ TIBFieldDef } |
| 784 |
|
|
|
| 785 |
|
|
TIBFieldDef = class(TFieldDef) |
| 786 |
|
|
private |
| 787 |
|
|
FArrayBounds: TArrayBounds; |
| 788 |
|
|
FArrayDimensions: integer; |
| 789 |
|
|
FCharacterSetName: RawByteString; |
| 790 |
|
|
FCharacterSetSize: integer; |
| 791 |
|
|
FCodePage: TSystemCodePage; |
| 792 |
|
|
FRelationName: string; |
| 793 |
|
|
published |
| 794 |
|
|
property CharacterSetName: RawByteString read FCharacterSetName write FCharacterSetName; |
| 795 |
|
|
property CharacterSetSize: integer read FCharacterSetSize write FCharacterSetSize; |
| 796 |
|
|
property CodePage: TSystemCodePage read FCodePage write FCodePage; |
| 797 |
|
|
property RelationName: string read FRelationName write FRelationName; |
| 798 |
|
|
property ArrayDimensions: integer read FArrayDimensions write FArrayDimensions; |
| 799 |
|
|
property ArrayBounds: TArrayBounds read FArrayBounds write FArrayBounds; |
| 800 |
|
|
end; |
| 801 |
|
|
|
| 802 |
tony |
33 |
const |
| 803 |
|
|
DefaultFieldClasses: array[TFieldType] of TFieldClass = ( |
| 804 |
|
|
nil, { ftUnknown } |
| 805 |
|
|
TIBStringField, { ftString } |
| 806 |
|
|
TSmallintField, { ftSmallint } |
| 807 |
|
|
TIntegerField, { ftInteger } |
| 808 |
|
|
TWordField, { ftWord } |
| 809 |
|
|
TBooleanField, { ftBoolean } |
| 810 |
|
|
TFloatField, { ftFloat } |
| 811 |
|
|
TCurrencyField, { ftCurrency } |
| 812 |
|
|
TIBBCDField, { ftBCD } |
| 813 |
|
|
TDateField, { ftDate } |
| 814 |
|
|
TTimeField, { ftTime } |
| 815 |
|
|
TDateTimeField, { ftDateTime } |
| 816 |
|
|
TBytesField, { ftBytes } |
| 817 |
|
|
TVarBytesField, { ftVarBytes } |
| 818 |
|
|
TAutoIncField, { ftAutoInc } |
| 819 |
|
|
TBlobField, { ftBlob } |
| 820 |
tony |
35 |
TIBMemoField, { ftMemo } |
| 821 |
tony |
33 |
TGraphicField, { ftGraphic } |
| 822 |
|
|
TBlobField, { ftFmtMemo } |
| 823 |
|
|
TBlobField, { ftParadoxOle } |
| 824 |
|
|
TBlobField, { ftDBaseOle } |
| 825 |
|
|
TBlobField, { ftTypedBinary } |
| 826 |
|
|
nil, { ftCursor } |
| 827 |
|
|
TStringField, { ftFixedChar } |
| 828 |
tony |
43 |
nil, { ftWideString } |
| 829 |
tony |
33 |
TLargeIntField, { ftLargeInt } |
| 830 |
|
|
nil, { ftADT } |
| 831 |
tony |
45 |
TIBArrayField, { ftArray } |
| 832 |
tony |
33 |
nil, { ftReference } |
| 833 |
|
|
nil, { ftDataSet } |
| 834 |
|
|
TBlobField, { ftOraBlob } |
| 835 |
|
|
TMemoField, { ftOraClob } |
| 836 |
|
|
TVariantField, { ftVariant } |
| 837 |
|
|
nil, { ftInterface } |
| 838 |
|
|
nil, { ftIDispatch } |
| 839 |
|
|
TGuidField, { ftGuid } |
| 840 |
|
|
TDateTimeField, {ftTimestamp} |
| 841 |
|
|
TIBBCDField, {ftFMTBcd} |
| 842 |
|
|
nil, {ftFixedWideChar} |
| 843 |
tony |
43 |
nil); {ftWideMemo} |
| 844 |
tony |
33 |
(* |
| 845 |
|
|
TADTField, { ftADT } |
| 846 |
|
|
TArrayField, { ftArray } |
| 847 |
|
|
TReferenceField, { ftReference } |
| 848 |
|
|
TDataSetField, { ftDataSet } |
| 849 |
|
|
TBlobField, { ftOraBlob } |
| 850 |
|
|
TMemoField, { ftOraClob } |
| 851 |
|
|
TVariantField, { ftVariant } |
| 852 |
|
|
TInterfaceField, { ftInterface } |
| 853 |
|
|
TIDispatchField, { ftIDispatch } |
| 854 |
|
|
TGuidField); { ftGuid } *) |
| 855 |
|
|
(*var |
| 856 |
|
|
CreateProviderProc: function(DataSet: TIBCustomDataSet): IProvider = nil;*) |
| 857 |
|
|
|
| 858 |
|
|
implementation |
| 859 |
|
|
|
| 860 |
tony |
45 |
uses Variants, FmtBCD, LazUTF8, FBMessages, IBQuery; |
| 861 |
tony |
33 |
|
| 862 |
|
|
const FILE_BEGIN = 0; |
| 863 |
|
|
FILE_CURRENT = 1; |
| 864 |
|
|
FILE_END = 2; |
| 865 |
|
|
|
| 866 |
|
|
type |
| 867 |
|
|
|
| 868 |
|
|
TFieldNode = class(TObject) |
| 869 |
|
|
protected |
| 870 |
|
|
FieldName : String; |
| 871 |
|
|
COMPUTED_BLR : Boolean; |
| 872 |
|
|
DEFAULT_VALUE : boolean; |
| 873 |
|
|
NextField : TFieldNode; |
| 874 |
|
|
end; |
| 875 |
|
|
|
| 876 |
|
|
TRelationNode = class(TObject) |
| 877 |
|
|
protected |
| 878 |
|
|
RelationName : String; |
| 879 |
|
|
FieldNodes : TFieldNode; |
| 880 |
|
|
NextRelation : TRelationNode; |
| 881 |
|
|
end; |
| 882 |
|
|
|
| 883 |
tony |
35 |
|
| 884 |
tony |
37 |
{ Copied from LCLProc in order to avoid LCL dependency |
| 885 |
|
|
|
| 886 |
|
|
Ensures the covenient look of multiline string |
| 887 |
|
|
when displaying it in the single line |
| 888 |
|
|
* Replaces CR and LF with spaces |
| 889 |
|
|
* Removes duplicate spaces |
| 890 |
|
|
} |
| 891 |
|
|
function TextToSingleLine(const AText: string): string; |
| 892 |
|
|
var |
| 893 |
|
|
str: string; |
| 894 |
|
|
i, wstart, wlen: Integer; |
| 895 |
|
|
begin |
| 896 |
|
|
str := Trim(AText); |
| 897 |
|
|
wstart := 0; |
| 898 |
|
|
wlen := 0; |
| 899 |
|
|
i := 1; |
| 900 |
|
|
while i < Length(str) - 1 do |
| 901 |
|
|
begin |
| 902 |
|
|
if (str[i] in [' ', #13, #10]) then |
| 903 |
|
|
begin |
| 904 |
|
|
if (wstart = 0) then |
| 905 |
|
|
begin |
| 906 |
|
|
wstart := i; |
| 907 |
|
|
wlen := 1; |
| 908 |
|
|
end else |
| 909 |
|
|
Inc(wlen); |
| 910 |
|
|
end else |
| 911 |
|
|
begin |
| 912 |
|
|
if wstart > 0 then |
| 913 |
|
|
begin |
| 914 |
|
|
str[wstart] := ' '; |
| 915 |
|
|
Delete(str, wstart+1, wlen-1); |
| 916 |
|
|
Dec(i, wlen-1); |
| 917 |
|
|
wstart := 0; |
| 918 |
|
|
end; |
| 919 |
|
|
end; |
| 920 |
|
|
Inc(i); |
| 921 |
|
|
end; |
| 922 |
|
|
Result := str; |
| 923 |
|
|
end; |
| 924 |
|
|
|
| 925 |
tony |
45 |
{ TIBArray } |
| 926 |
|
|
|
| 927 |
|
|
procedure TIBArray.EventHandler(Sender: IArray; Reason: TArrayEventReason); |
| 928 |
|
|
begin |
| 929 |
|
|
case Reason of |
| 930 |
|
|
arChanging: |
| 931 |
|
|
if FRecNo <> FField.Dataset.RecNo then |
| 932 |
|
|
IBError(ibxeNotCurrentArray,[nil]); |
| 933 |
|
|
|
| 934 |
|
|
arChanged: |
| 935 |
|
|
FField.DataChanged; |
| 936 |
|
|
end; |
| 937 |
|
|
end; |
| 938 |
|
|
|
| 939 |
|
|
constructor TIBArray.Create(aField: TIBArrayField; anArray: IArray); |
| 940 |
|
|
begin |
| 941 |
|
|
inherited Create; |
| 942 |
|
|
FField := aField; |
| 943 |
|
|
FArray := anArray; |
| 944 |
|
|
FRecNo := FField.Dataset.RecNo; |
| 945 |
|
|
FArray.AddEventHandler(EventHandler); |
| 946 |
|
|
end; |
| 947 |
|
|
|
| 948 |
|
|
destructor TIBArray.Destroy; |
| 949 |
|
|
begin |
| 950 |
|
|
FArray.RemoveEventHandler(EventHandler); |
| 951 |
|
|
inherited Destroy; |
| 952 |
|
|
end; |
| 953 |
|
|
|
| 954 |
|
|
{ TIBArrayField } |
| 955 |
|
|
|
| 956 |
|
|
function TIBArrayField.GetArrayIntf: IArray; |
| 957 |
|
|
begin |
| 958 |
|
|
Result := TIBCustomDataSet(DataSet).GetArray(self); |
| 959 |
|
|
end; |
| 960 |
|
|
|
| 961 |
|
|
function TIBArrayField.GetArrayID: TISC_QUAD; |
| 962 |
|
|
begin |
| 963 |
|
|
GetData(@Result); |
| 964 |
|
|
end; |
| 965 |
|
|
|
| 966 |
|
|
procedure TIBArrayField.SetArrayIntf(AValue: IArray); |
| 967 |
|
|
begin |
| 968 |
|
|
TIBCustomDataSet(DataSet).SetArrayIntf(AValue,self); |
| 969 |
|
|
DataChanged; |
| 970 |
|
|
end; |
| 971 |
|
|
|
| 972 |
|
|
class procedure TIBArrayField.CheckTypeSize(AValue: Longint); |
| 973 |
|
|
begin |
| 974 |
|
|
//Ignore |
| 975 |
|
|
end; |
| 976 |
|
|
|
| 977 |
|
|
function TIBArrayField.GetAsString: string; |
| 978 |
|
|
begin |
| 979 |
|
|
Result := '(Array)'; |
| 980 |
|
|
end; |
| 981 |
|
|
|
| 982 |
|
|
function TIBArrayField.GetDataSize: Integer; |
| 983 |
|
|
begin |
| 984 |
|
|
Result := sizeof(TISC_QUAD); |
| 985 |
|
|
end; |
| 986 |
|
|
|
| 987 |
|
|
procedure TIBArrayField.Bind(Binding: Boolean); |
| 988 |
|
|
begin |
| 989 |
|
|
inherited Bind(Binding); |
| 990 |
|
|
if Binding then |
| 991 |
|
|
begin |
| 992 |
|
|
FCacheOffset := TIBCustomDataSet(DataSet).ArrayFieldCount; |
| 993 |
|
|
Inc(TIBCustomDataSet(DataSet).FArrayFieldCount); |
| 994 |
|
|
if FieldDef <> nil then |
| 995 |
|
|
begin |
| 996 |
|
|
FRelationName := TIBFieldDef(FieldDef).FRelationName; |
| 997 |
|
|
FArrayDimensions := TIBFieldDef(FieldDef).ArrayDimensions; |
| 998 |
|
|
FArrayBounds := TIBFieldDef(FieldDef).ArrayBounds; |
| 999 |
|
|
end; |
| 1000 |
|
|
end; |
| 1001 |
|
|
end; |
| 1002 |
|
|
|
| 1003 |
|
|
constructor TIBArrayField.Create(AOwner: TComponent); |
| 1004 |
|
|
begin |
| 1005 |
|
|
inherited Create(AOwner); |
| 1006 |
|
|
SetDataType(ftArray); |
| 1007 |
|
|
end; |
| 1008 |
|
|
|
| 1009 |
|
|
function TIBArrayField.CreateArray: IArray; |
| 1010 |
|
|
begin |
| 1011 |
|
|
with DataSet as TIBCustomDataSet do |
| 1012 |
|
|
Result := Database.Attachment.CreateArray(Transaction.TransactionIntf,FRelationName,FieldName); |
| 1013 |
|
|
end; |
| 1014 |
|
|
|
| 1015 |
tony |
35 |
{ TIBMemoField } |
| 1016 |
|
|
|
| 1017 |
|
|
function TIBMemoField.GetTruncatedText: string; |
| 1018 |
|
|
begin |
| 1019 |
|
|
Result := GetAsString; |
| 1020 |
|
|
|
| 1021 |
|
|
if Result <> '' then |
| 1022 |
|
|
begin |
| 1023 |
|
|
case CharacterSetSize of |
| 1024 |
|
|
1: |
| 1025 |
|
|
if DisplayWidth = 0 then |
| 1026 |
|
|
Result := TextToSingleLine(Result) |
| 1027 |
|
|
else |
| 1028 |
|
|
if Length(Result) > DisplayWidth then {Show truncation with elipses} |
| 1029 |
|
|
Result := TextToSingleLine(system.copy(Result,1,DisplayWidth-3)) + '...'; |
| 1030 |
|
|
|
| 1031 |
|
|
{2: case 2 ignored. This should be handled by TIBWideMemo} |
| 1032 |
|
|
|
| 1033 |
|
|
3, {Assume UNICODE_FSS is really UTF8} |
| 1034 |
|
|
4: {Include GB18030 - assuming UTF8 routine work for this codeset} |
| 1035 |
|
|
if DisplayWidth = 0 then |
| 1036 |
|
|
Result := ValidUTF8String(TextToSingleLine(Result)) |
| 1037 |
|
|
else |
| 1038 |
|
|
if UTF8Length(Result) > DisplayWidth then {Show truncation with elipses} |
| 1039 |
|
|
Result := ValidUTF8String(TextToSingleLine(UTF8Copy(Result,1,DisplayWidth-3))) + '...'; |
| 1040 |
|
|
end; |
| 1041 |
|
|
end |
| 1042 |
|
|
end; |
| 1043 |
|
|
|
| 1044 |
tony |
45 |
procedure TIBMemoField.Bind(Binding: Boolean); |
| 1045 |
|
|
var IBFieldDef: TIBFieldDef; |
| 1046 |
|
|
begin |
| 1047 |
|
|
inherited Bind(Binding); |
| 1048 |
|
|
if Binding and (FieldDef <> nil) then |
| 1049 |
|
|
begin |
| 1050 |
|
|
IBFieldDef := FieldDef as TIBFieldDef; |
| 1051 |
|
|
CharacterSetSize := IBFieldDef.CharacterSetSize; |
| 1052 |
|
|
CharacterSetName := IBFieldDef.CharacterSetName; |
| 1053 |
|
|
CodePage := IBFieldDef.CodePage; |
| 1054 |
|
|
end; |
| 1055 |
|
|
end; |
| 1056 |
|
|
|
| 1057 |
tony |
39 |
function TIBMemoField.GetAsString: string; |
| 1058 |
|
|
var s: RawByteString; |
| 1059 |
|
|
begin |
| 1060 |
|
|
s := inherited GetAsString; |
| 1061 |
|
|
SetCodePage(s,CodePage,false); |
| 1062 |
tony |
43 |
if (CodePage <> CP_NONE) and (CodePage <> CP_UTF8) then |
| 1063 |
|
|
SetCodePage(s,CP_UTF8,true); {LCL only accepts UTF8} |
| 1064 |
tony |
39 |
Result := s; |
| 1065 |
|
|
end; |
| 1066 |
|
|
|
| 1067 |
tony |
35 |
function TIBMemoField.GetDefaultWidth: Longint; |
| 1068 |
|
|
begin |
| 1069 |
tony |
37 |
if DisplayTextAsClassName then |
| 1070 |
|
|
Result := inherited |
| 1071 |
|
|
else |
| 1072 |
|
|
Result := 128; |
| 1073 |
tony |
35 |
end; |
| 1074 |
|
|
|
| 1075 |
|
|
procedure TIBMemoField.GetText(var AText: string; ADisplayText: Boolean); |
| 1076 |
|
|
begin |
| 1077 |
|
|
if ADisplayText then |
| 1078 |
|
|
begin |
| 1079 |
tony |
39 |
if not DisplayTextAsClassName and (CharacterSetName <> '') then |
| 1080 |
tony |
35 |
AText := GetTruncatedText |
| 1081 |
|
|
else |
| 1082 |
|
|
inherited GetText(AText, ADisplayText); |
| 1083 |
|
|
end |
| 1084 |
|
|
else |
| 1085 |
|
|
AText := GetAsString; |
| 1086 |
|
|
end; |
| 1087 |
|
|
|
| 1088 |
tony |
39 |
procedure TIBMemoField.SetAsString(const AValue: string); |
| 1089 |
|
|
var s: RawByteString; |
| 1090 |
|
|
begin |
| 1091 |
|
|
s := AValue; |
| 1092 |
tony |
57 |
if StringCodePage(s) <> CodePage then |
| 1093 |
tony |
43 |
SetCodePage(s,CodePage,CodePage<>CP_NONE); |
| 1094 |
tony |
39 |
inherited SetAsString(s); |
| 1095 |
|
|
end; |
| 1096 |
|
|
|
| 1097 |
tony |
35 |
constructor TIBMemoField.Create(AOwner: TComponent); |
| 1098 |
|
|
begin |
| 1099 |
|
|
inherited Create(AOwner); |
| 1100 |
|
|
BlobType := ftMemo; |
| 1101 |
tony |
39 |
FCodePage := CP_NONE; |
| 1102 |
tony |
35 |
end; |
| 1103 |
|
|
|
| 1104 |
tony |
33 |
{ TIBControlLink } |
| 1105 |
|
|
|
| 1106 |
|
|
destructor TIBControlLink.Destroy; |
| 1107 |
|
|
begin |
| 1108 |
|
|
IBDataSet := nil; |
| 1109 |
|
|
inherited Destroy; |
| 1110 |
|
|
end; |
| 1111 |
|
|
|
| 1112 |
|
|
procedure TIBControlLink.UpdateParams(Sender: TObject); |
| 1113 |
|
|
begin |
| 1114 |
|
|
|
| 1115 |
|
|
end; |
| 1116 |
|
|
|
| 1117 |
|
|
procedure TIBControlLink.UpdateSQL(Sender: TObject); |
| 1118 |
|
|
begin |
| 1119 |
|
|
|
| 1120 |
|
|
end; |
| 1121 |
|
|
|
| 1122 |
|
|
procedure TIBControlLink.SetIBDataSet(AValue: TIBCustomDataSet); |
| 1123 |
|
|
begin |
| 1124 |
|
|
if FTIBDataSet = AValue then Exit; |
| 1125 |
|
|
if IBDataSet <> nil then |
| 1126 |
|
|
IBDataSet.UnRegisterIBLink(self); |
| 1127 |
|
|
FTIBDataSet := AValue; |
| 1128 |
|
|
if IBDataSet <> nil then |
| 1129 |
|
|
IBDataSet.RegisterIBLink(self); |
| 1130 |
|
|
end; |
| 1131 |
|
|
|
| 1132 |
|
|
|
| 1133 |
|
|
{ TIBStringField} |
| 1134 |
|
|
|
| 1135 |
tony |
45 |
procedure TIBStringField.Bind(Binding: Boolean); |
| 1136 |
|
|
var IBFieldDef: TIBFieldDef; |
| 1137 |
tony |
33 |
begin |
| 1138 |
tony |
45 |
inherited Bind(Binding); |
| 1139 |
|
|
if Binding and (FieldDef <> nil) then |
| 1140 |
|
|
begin |
| 1141 |
|
|
IBFieldDef := FieldDef as TIBFieldDef; |
| 1142 |
|
|
CharacterSetSize := IBFieldDef.CharacterSetSize; |
| 1143 |
|
|
CharacterSetName := IBFieldDef.CharacterSetName; |
| 1144 |
|
|
if AutoFieldSize then |
| 1145 |
|
|
Size := IBFieldDef.Size; |
| 1146 |
|
|
CodePage := IBFieldDef.CodePage; |
| 1147 |
|
|
end; |
| 1148 |
tony |
33 |
end; |
| 1149 |
|
|
|
| 1150 |
tony |
45 |
function TIBStringField.GetDataSize: Integer; |
| 1151 |
|
|
begin |
| 1152 |
|
|
Result := Size * CharacterSetSize + 1; |
| 1153 |
|
|
end; |
| 1154 |
|
|
|
| 1155 |
tony |
35 |
constructor TIBStringField.Create(aOwner: TComponent); |
| 1156 |
|
|
begin |
| 1157 |
|
|
inherited Create(aOwner); |
| 1158 |
|
|
FCharacterSetSize := 1; |
| 1159 |
tony |
39 |
FCodePage := CP_NONE; |
| 1160 |
tony |
45 |
FAutoFieldSize := true; |
| 1161 |
tony |
35 |
end; |
| 1162 |
|
|
|
| 1163 |
tony |
33 |
class procedure TIBStringField.CheckTypeSize(Value: Integer); |
| 1164 |
|
|
begin |
| 1165 |
|
|
{ don't check string size. all sizes valid } |
| 1166 |
|
|
end; |
| 1167 |
|
|
|
| 1168 |
|
|
function TIBStringField.GetAsString: string; |
| 1169 |
|
|
begin |
| 1170 |
|
|
if not GetValue(Result) then Result := ''; |
| 1171 |
|
|
end; |
| 1172 |
|
|
|
| 1173 |
|
|
function TIBStringField.GetAsVariant: Variant; |
| 1174 |
|
|
var |
| 1175 |
|
|
S: string; |
| 1176 |
|
|
begin |
| 1177 |
|
|
if GetValue(S) then Result := S else Result := Null; |
| 1178 |
|
|
end; |
| 1179 |
|
|
|
| 1180 |
|
|
function TIBStringField.GetValue(var Value: string): Boolean; |
| 1181 |
|
|
var |
| 1182 |
|
|
Buffer: PChar; |
| 1183 |
tony |
39 |
s: RawByteString; |
| 1184 |
tony |
33 |
begin |
| 1185 |
|
|
Buffer := nil; |
| 1186 |
tony |
45 |
IBAlloc(Buffer, 0, DataSize); |
| 1187 |
tony |
33 |
try |
| 1188 |
|
|
Result := GetData(Buffer); |
| 1189 |
|
|
if Result then |
| 1190 |
|
|
begin |
| 1191 |
tony |
45 |
s := strpas(Buffer); |
| 1192 |
tony |
39 |
SetCodePage(s,CodePage,false); |
| 1193 |
tony |
43 |
if (CodePage <> CP_NONE) and (CodePage <> CP_UTF8) then |
| 1194 |
|
|
SetCodePage(s,CP_UTF8,true); {LCL only accepts UTF8} |
| 1195 |
tony |
39 |
Value := s; |
| 1196 |
tony |
45 |
// writeln(FieldName,': ', StringCodePage(Value),', ',Value); |
| 1197 |
tony |
33 |
if Transliterate and (Value <> '') then |
| 1198 |
|
|
DataSet.Translate(PChar(Value), PChar(Value), False); |
| 1199 |
|
|
end |
| 1200 |
|
|
finally |
| 1201 |
|
|
FreeMem(Buffer); |
| 1202 |
|
|
end; |
| 1203 |
|
|
end; |
| 1204 |
|
|
|
| 1205 |
|
|
procedure TIBStringField.SetAsString(const Value: string); |
| 1206 |
|
|
var |
| 1207 |
|
|
Buffer: PChar; |
| 1208 |
tony |
39 |
s: RawByteString; |
| 1209 |
tony |
33 |
begin |
| 1210 |
|
|
Buffer := nil; |
| 1211 |
tony |
58 |
IBAlloc(Buffer, 0, DataSize); |
| 1212 |
tony |
33 |
try |
| 1213 |
tony |
39 |
s := Value; |
| 1214 |
|
|
if StringCodePage(s) <> CodePage then |
| 1215 |
tony |
43 |
SetCodePage(s,CodePage,CodePage<>CP_NONE); |
| 1216 |
tony |
58 |
StrLCopy(Buffer, PChar(s), DataSize-1); |
| 1217 |
tony |
33 |
if Transliterate then |
| 1218 |
|
|
DataSet.Translate(Buffer, Buffer, True); |
| 1219 |
|
|
SetData(Buffer); |
| 1220 |
|
|
finally |
| 1221 |
|
|
FreeMem(Buffer); |
| 1222 |
|
|
end; |
| 1223 |
|
|
end; |
| 1224 |
|
|
|
| 1225 |
|
|
|
| 1226 |
|
|
{ TIBBCDField } |
| 1227 |
|
|
|
| 1228 |
|
|
constructor TIBBCDField.Create(AOwner: TComponent); |
| 1229 |
|
|
begin |
| 1230 |
|
|
inherited Create(AOwner); |
| 1231 |
|
|
SetDataType(ftBCD); |
| 1232 |
|
|
Size := 8; |
| 1233 |
|
|
end; |
| 1234 |
|
|
|
| 1235 |
|
|
class procedure TIBBCDField.CheckTypeSize(Value: Integer); |
| 1236 |
|
|
begin |
| 1237 |
|
|
{ No need to check as the base type is currency, not BCD } |
| 1238 |
|
|
end; |
| 1239 |
|
|
|
| 1240 |
|
|
function TIBBCDField.GetAsCurrency: Currency; |
| 1241 |
|
|
begin |
| 1242 |
|
|
if not GetValue(Result) then |
| 1243 |
|
|
Result := 0; |
| 1244 |
|
|
end; |
| 1245 |
|
|
|
| 1246 |
|
|
function TIBBCDField.GetAsString: string; |
| 1247 |
|
|
var |
| 1248 |
|
|
C: System.Currency; |
| 1249 |
|
|
begin |
| 1250 |
|
|
if GetValue(C) then |
| 1251 |
|
|
Result := CurrToStr(C) |
| 1252 |
|
|
else |
| 1253 |
|
|
Result := ''; |
| 1254 |
|
|
end; |
| 1255 |
|
|
|
| 1256 |
|
|
function TIBBCDField.GetAsVariant: Variant; |
| 1257 |
|
|
var |
| 1258 |
|
|
C: System.Currency; |
| 1259 |
|
|
begin |
| 1260 |
|
|
if GetValue(C) then |
| 1261 |
|
|
Result := C |
| 1262 |
|
|
else |
| 1263 |
|
|
Result := Null; |
| 1264 |
|
|
end; |
| 1265 |
|
|
|
| 1266 |
|
|
function TIBBCDField.GetDataSize: Integer; |
| 1267 |
|
|
begin |
| 1268 |
|
|
{$IFDEF TBCDFIELD_IS_BCD} |
| 1269 |
|
|
Result := 8; |
| 1270 |
|
|
{$ELSE} |
| 1271 |
|
|
Result := inherited GetDataSize |
| 1272 |
|
|
{$ENDIF} |
| 1273 |
|
|
end; |
| 1274 |
|
|
|
| 1275 |
|
|
{ TIBDataLink } |
| 1276 |
|
|
|
| 1277 |
|
|
constructor TIBDataLink.Create(ADataSet: TIBCustomDataSet); |
| 1278 |
|
|
begin |
| 1279 |
|
|
inherited Create; |
| 1280 |
|
|
FDataSet := ADataSet; |
| 1281 |
|
|
end; |
| 1282 |
|
|
|
| 1283 |
|
|
destructor TIBDataLink.Destroy; |
| 1284 |
|
|
begin |
| 1285 |
|
|
FDataSet.FDataLink := nil; |
| 1286 |
|
|
inherited Destroy; |
| 1287 |
|
|
end; |
| 1288 |
|
|
|
| 1289 |
|
|
|
| 1290 |
|
|
procedure TIBDataLink.ActiveChanged; |
| 1291 |
|
|
begin |
| 1292 |
|
|
if FDataSet.Active then |
| 1293 |
|
|
FDataSet.RefreshParams; |
| 1294 |
|
|
end; |
| 1295 |
|
|
|
| 1296 |
|
|
|
| 1297 |
|
|
function TIBDataLink.GetDetailDataSet: TDataSet; |
| 1298 |
|
|
begin |
| 1299 |
|
|
Result := FDataSet; |
| 1300 |
|
|
end; |
| 1301 |
|
|
|
| 1302 |
|
|
procedure TIBDataLink.RecordChanged(Field: TField); |
| 1303 |
|
|
begin |
| 1304 |
|
|
if (Field = nil) and FDataSet.Active then |
| 1305 |
|
|
FDataSet.RefreshParams; |
| 1306 |
|
|
end; |
| 1307 |
|
|
|
| 1308 |
|
|
procedure TIBDataLink.CheckBrowseMode; |
| 1309 |
|
|
begin |
| 1310 |
|
|
if FDataSet.Active then |
| 1311 |
|
|
FDataSet.CheckBrowseMode; |
| 1312 |
|
|
end; |
| 1313 |
|
|
|
| 1314 |
|
|
{ TIBCustomDataSet } |
| 1315 |
|
|
|
| 1316 |
|
|
constructor TIBCustomDataSet.Create(AOwner: TComponent); |
| 1317 |
|
|
begin |
| 1318 |
|
|
inherited Create(AOwner); |
| 1319 |
|
|
FBase := TIBBase.Create(Self); |
| 1320 |
|
|
FIBLinks := TList.Create; |
| 1321 |
|
|
FCurrentRecord := -1; |
| 1322 |
|
|
FDeletedRecords := 0; |
| 1323 |
|
|
FUniDirectional := False; |
| 1324 |
|
|
FBufferChunks := BufferCacheSize; |
| 1325 |
|
|
FBlobStreamList := TList.Create; |
| 1326 |
tony |
45 |
FArrayList := TList.Create; |
| 1327 |
tony |
33 |
FGeneratorField := TIBGenerator.Create(self); |
| 1328 |
|
|
FDataLink := TIBDataLink.Create(Self); |
| 1329 |
|
|
FQDelete := TIBSQL.Create(Self); |
| 1330 |
|
|
FQDelete.OnSQLChanging := SQLChanging; |
| 1331 |
|
|
FQDelete.GoToFirstRecordOnExecute := False; |
| 1332 |
|
|
FQInsert := TIBSQL.Create(Self); |
| 1333 |
|
|
FQInsert.OnSQLChanging := SQLChanging; |
| 1334 |
|
|
FQInsert.GoToFirstRecordOnExecute := False; |
| 1335 |
|
|
FQRefresh := TIBSQL.Create(Self); |
| 1336 |
|
|
FQRefresh.OnSQLChanging := SQLChanging; |
| 1337 |
|
|
FQRefresh.GoToFirstRecordOnExecute := False; |
| 1338 |
|
|
FQSelect := TIBSQL.Create(Self); |
| 1339 |
|
|
FQSelect.OnSQLChanging := SQLChanging; |
| 1340 |
tony |
35 |
FQSelect.OnSQLChanged := SQLChanged; |
| 1341 |
tony |
33 |
FQSelect.GoToFirstRecordOnExecute := False; |
| 1342 |
|
|
FQModify := TIBSQL.Create(Self); |
| 1343 |
|
|
FQModify.OnSQLChanging := SQLChanging; |
| 1344 |
|
|
FQModify.GoToFirstRecordOnExecute := False; |
| 1345 |
|
|
FUpdateRecordTypes := [cusUnmodified, cusModified, cusInserted]; |
| 1346 |
|
|
FParamCheck := True; |
| 1347 |
|
|
FGenerateParamNames := False; |
| 1348 |
|
|
FForcedRefresh := False; |
| 1349 |
|
|
FAutoCommit:= acDisabled; |
| 1350 |
|
|
FDataSetCloseAction := dcDiscardChanges; |
| 1351 |
|
|
{Bookmark Size is Integer for IBX} |
| 1352 |
|
|
BookmarkSize := SizeOf(Integer); |
| 1353 |
|
|
FBase.BeforeDatabaseDisconnect := DoBeforeDatabaseDisconnect; |
| 1354 |
|
|
FBase.AfterDatabaseDisconnect := DoAfterDatabaseDisconnect; |
| 1355 |
|
|
FBase.OnDatabaseFree := DoDatabaseFree; |
| 1356 |
|
|
FBase.BeforeTransactionEnd := DoBeforeTransactionEnd; |
| 1357 |
|
|
FBase.AfterTransactionEnd := DoAfterTransactionEnd; |
| 1358 |
|
|
FBase.OnTransactionFree := DoTransactionFree; |
| 1359 |
|
|
if AOwner is TIBDatabase then |
| 1360 |
|
|
Database := TIBDatabase(AOwner) |
| 1361 |
|
|
else |
| 1362 |
|
|
if AOwner is TIBTransaction then |
| 1363 |
|
|
Transaction := TIBTransaction(AOwner); |
| 1364 |
|
|
FBaseSQLSelect := TStringList.Create; |
| 1365 |
|
|
end; |
| 1366 |
|
|
|
| 1367 |
|
|
destructor TIBCustomDataSet.Destroy; |
| 1368 |
|
|
begin |
| 1369 |
|
|
if Active then Active := false; |
| 1370 |
tony |
45 |
if assigned(FGeneratorField) then FGeneratorField.Free; |
| 1371 |
|
|
FDataLink.Free; |
| 1372 |
|
|
FBase.Free; |
| 1373 |
|
|
ClearBlobCache; |
| 1374 |
|
|
ClearIBLinks; |
| 1375 |
|
|
FIBLinks.Free; |
| 1376 |
|
|
FBlobStreamList.Free; |
| 1377 |
|
|
FArrayList.Free; |
| 1378 |
|
|
FreeMem(FBufferCache); |
| 1379 |
|
|
FBufferCache := nil; |
| 1380 |
|
|
FreeMem(FOldBufferCache); |
| 1381 |
|
|
FOldBufferCache := nil; |
| 1382 |
|
|
FCacheSize := 0; |
| 1383 |
|
|
FOldCacheSize := 0; |
| 1384 |
|
|
FMappedFieldPosition := nil; |
| 1385 |
tony |
33 |
if assigned(FBaseSQLSelect) then FBaseSQLSelect.Free; |
| 1386 |
|
|
if assigned(FParser) then FParser.Free; |
| 1387 |
|
|
inherited Destroy; |
| 1388 |
|
|
end; |
| 1389 |
|
|
|
| 1390 |
|
|
function TIBCustomDataSet.AdjustCurrentRecord(Buffer: Pointer; GetMode: TGetMode): |
| 1391 |
|
|
TGetResult; |
| 1392 |
|
|
begin |
| 1393 |
|
|
while not IsVisible(Buffer) do |
| 1394 |
|
|
begin |
| 1395 |
|
|
if GetMode = gmPrior then |
| 1396 |
|
|
begin |
| 1397 |
|
|
Dec(FCurrentRecord); |
| 1398 |
|
|
if FCurrentRecord = -1 then |
| 1399 |
|
|
begin |
| 1400 |
|
|
result := grBOF; |
| 1401 |
|
|
exit; |
| 1402 |
|
|
end; |
| 1403 |
|
|
ReadRecordCache(FCurrentRecord, Buffer, False); |
| 1404 |
|
|
end |
| 1405 |
|
|
else begin |
| 1406 |
|
|
Inc(FCurrentRecord); |
| 1407 |
|
|
if (FCurrentRecord = FRecordCount) then |
| 1408 |
|
|
begin |
| 1409 |
tony |
45 |
if (not FQSelect.EOF) and FQSelect.Next then |
| 1410 |
tony |
33 |
begin |
| 1411 |
|
|
FetchCurrentRecordToBuffer(FQSelect, FCurrentRecord, Buffer); |
| 1412 |
|
|
Inc(FRecordCount); |
| 1413 |
|
|
end |
| 1414 |
|
|
else begin |
| 1415 |
|
|
result := grEOF; |
| 1416 |
|
|
exit; |
| 1417 |
|
|
end; |
| 1418 |
|
|
end |
| 1419 |
|
|
else |
| 1420 |
|
|
ReadRecordCache(FCurrentRecord, Buffer, False); |
| 1421 |
|
|
end; |
| 1422 |
|
|
end; |
| 1423 |
|
|
result := grOK; |
| 1424 |
|
|
end; |
| 1425 |
|
|
|
| 1426 |
|
|
procedure TIBCustomDataSet.ApplyUpdates; |
| 1427 |
|
|
var |
| 1428 |
|
|
CurBookmark: TBookmark; |
| 1429 |
|
|
Buffer: PRecordData; |
| 1430 |
|
|
CurUpdateTypes: TIBUpdateRecordTypes; |
| 1431 |
|
|
UpdateAction: TIBUpdateAction; |
| 1432 |
|
|
UpdateKind: TUpdateKind; |
| 1433 |
|
|
bRecordsSkipped: Boolean; |
| 1434 |
|
|
|
| 1435 |
|
|
procedure GetUpdateKind; |
| 1436 |
|
|
begin |
| 1437 |
|
|
case Buffer^.rdCachedUpdateStatus of |
| 1438 |
|
|
cusModified: |
| 1439 |
|
|
UpdateKind := ukModify; |
| 1440 |
|
|
cusInserted: |
| 1441 |
|
|
UpdateKind := ukInsert; |
| 1442 |
|
|
else |
| 1443 |
|
|
UpdateKind := ukDelete; |
| 1444 |
|
|
end; |
| 1445 |
|
|
end; |
| 1446 |
|
|
|
| 1447 |
|
|
procedure ResetBufferUpdateStatus; |
| 1448 |
|
|
begin |
| 1449 |
|
|
case Buffer^.rdCachedUpdateStatus of |
| 1450 |
|
|
cusModified: |
| 1451 |
|
|
begin |
| 1452 |
|
|
PRecordData(Buffer)^.rdUpdateStatus := usUnmodified; |
| 1453 |
|
|
PRecordData(Buffer)^.rdCachedUpdateStatus := cusUnmodified; |
| 1454 |
|
|
end; |
| 1455 |
|
|
cusInserted: |
| 1456 |
|
|
begin |
| 1457 |
|
|
PRecordData(Buffer)^.rdUpdateStatus := usUnmodified; |
| 1458 |
|
|
PRecordData(Buffer)^.rdCachedUpdateStatus := cusUnmodified; |
| 1459 |
|
|
end; |
| 1460 |
|
|
cusDeleted: |
| 1461 |
|
|
begin |
| 1462 |
|
|
PRecordData(Buffer)^.rdUpdateStatus := usDeleted; |
| 1463 |
|
|
PRecordData(Buffer)^.rdCachedUpdateStatus := cusUnmodified; |
| 1464 |
|
|
end; |
| 1465 |
|
|
end; |
| 1466 |
|
|
WriteRecordCache(PRecordData(Buffer)^.rdRecordNumber, Pointer(Buffer)); |
| 1467 |
|
|
end; |
| 1468 |
|
|
|
| 1469 |
|
|
procedure UpdateUsingOnUpdateRecord; |
| 1470 |
|
|
begin |
| 1471 |
|
|
UpdateAction := uaFail; |
| 1472 |
|
|
try |
| 1473 |
|
|
FOnUpdateRecord(Self, UpdateKind, UpdateAction); |
| 1474 |
|
|
except |
| 1475 |
|
|
on E: Exception do |
| 1476 |
|
|
begin |
| 1477 |
|
|
if (E is EDatabaseError) and Assigned(FOnUpdateError) then |
| 1478 |
|
|
FOnUpdateError(Self, EIBError(E), UpdateKind, UpdateAction); |
| 1479 |
|
|
if UpdateAction = uaFail then |
| 1480 |
|
|
raise; |
| 1481 |
|
|
end; |
| 1482 |
|
|
end; |
| 1483 |
|
|
end; |
| 1484 |
|
|
|
| 1485 |
|
|
procedure UpdateUsingUpdateObject; |
| 1486 |
|
|
begin |
| 1487 |
|
|
try |
| 1488 |
|
|
FUpdateObject.Apply(UpdateKind,PChar(Buffer)); |
| 1489 |
|
|
ResetBufferUpdateStatus; |
| 1490 |
|
|
except |
| 1491 |
|
|
on E: Exception do |
| 1492 |
|
|
if (E is EDatabaseError) and Assigned(FOnUpdateError) then |
| 1493 |
|
|
FOnUpdateError(Self, EIBError(E), UpdateKind, UpdateAction); |
| 1494 |
|
|
end; |
| 1495 |
|
|
end; |
| 1496 |
|
|
|
| 1497 |
|
|
procedure UpdateUsingInternalquery; |
| 1498 |
|
|
begin |
| 1499 |
|
|
try |
| 1500 |
|
|
case Buffer^.rdCachedUpdateStatus of |
| 1501 |
|
|
cusModified: |
| 1502 |
|
|
InternalPostRecord(FQModify, Buffer); |
| 1503 |
|
|
cusInserted: |
| 1504 |
|
|
InternalPostRecord(FQInsert, Buffer); |
| 1505 |
|
|
cusDeleted: |
| 1506 |
|
|
InternalDeleteRecord(FQDelete, Buffer); |
| 1507 |
|
|
end; |
| 1508 |
|
|
except |
| 1509 |
|
|
on E: EIBError do begin |
| 1510 |
|
|
UpdateAction := uaFail; |
| 1511 |
|
|
if Assigned(FOnUpdateError) then |
| 1512 |
|
|
FOnUpdateError(Self, E, UpdateKind, UpdateAction); |
| 1513 |
|
|
case UpdateAction of |
| 1514 |
|
|
uaFail: raise; |
| 1515 |
|
|
uaAbort: SysUtils.Abort; |
| 1516 |
|
|
uaSkip: bRecordsSkipped := True; |
| 1517 |
|
|
end; |
| 1518 |
|
|
end; |
| 1519 |
|
|
end; |
| 1520 |
|
|
end; |
| 1521 |
|
|
|
| 1522 |
|
|
begin |
| 1523 |
|
|
if State in [dsEdit, dsInsert] then |
| 1524 |
|
|
Post; |
| 1525 |
|
|
FBase.CheckDatabase; |
| 1526 |
|
|
FBase.CheckTransaction; |
| 1527 |
|
|
DisableControls; |
| 1528 |
|
|
CurBookmark := Bookmark; |
| 1529 |
|
|
CurUpdateTypes := FUpdateRecordTypes; |
| 1530 |
|
|
FUpdateRecordTypes := [cusModified, cusInserted, cusDeleted]; |
| 1531 |
|
|
try |
| 1532 |
|
|
First; |
| 1533 |
|
|
bRecordsSkipped := False; |
| 1534 |
|
|
while not EOF do |
| 1535 |
|
|
begin |
| 1536 |
|
|
Buffer := PRecordData(GetActiveBuf); |
| 1537 |
|
|
GetUpdateKind; |
| 1538 |
|
|
UpdateAction := uaApply; |
| 1539 |
|
|
if Assigned(FUpdateObject) or Assigned(FOnUpdateRecord) then |
| 1540 |
|
|
begin |
| 1541 |
|
|
if (Assigned(FOnUpdateRecord)) then |
| 1542 |
|
|
UpdateUsingOnUpdateRecord |
| 1543 |
|
|
else |
| 1544 |
|
|
if Assigned(FUpdateObject) then |
| 1545 |
|
|
UpdateUsingUpdateObject; |
| 1546 |
|
|
case UpdateAction of |
| 1547 |
|
|
uaFail: |
| 1548 |
|
|
IBError(ibxeUserAbort, [nil]); |
| 1549 |
|
|
uaAbort: |
| 1550 |
|
|
SysUtils.Abort; |
| 1551 |
|
|
uaApplied: |
| 1552 |
|
|
ResetBufferUpdateStatus; |
| 1553 |
|
|
uaSkip: |
| 1554 |
|
|
bRecordsSkipped := True; |
| 1555 |
|
|
uaRetry: |
| 1556 |
|
|
Continue; |
| 1557 |
|
|
end; |
| 1558 |
|
|
end; |
| 1559 |
|
|
if (not Assigned(FUpdateObject)) and (UpdateAction = UaApply) then |
| 1560 |
|
|
begin |
| 1561 |
|
|
UpdateUsingInternalquery; |
| 1562 |
|
|
UpdateAction := uaApplied; |
| 1563 |
|
|
end; |
| 1564 |
|
|
Next; |
| 1565 |
|
|
end; |
| 1566 |
|
|
FUpdatesPending := bRecordsSkipped; |
| 1567 |
|
|
finally |
| 1568 |
|
|
FUpdateRecordTypes := CurUpdateTypes; |
| 1569 |
|
|
Bookmark := CurBookmark; |
| 1570 |
|
|
EnableControls; |
| 1571 |
|
|
end; |
| 1572 |
|
|
end; |
| 1573 |
|
|
|
| 1574 |
|
|
procedure TIBCustomDataSet.InternalBatchInput(InputObject: TIBBatchInput); |
| 1575 |
|
|
begin |
| 1576 |
|
|
FQSelect.BatchInput(InputObject); |
| 1577 |
|
|
end; |
| 1578 |
|
|
|
| 1579 |
|
|
procedure TIBCustomDataSet.InternalBatchOutput(OutputObject: TIBBatchOutput); |
| 1580 |
|
|
var |
| 1581 |
|
|
Qry: TIBSQL; |
| 1582 |
|
|
begin |
| 1583 |
|
|
Qry := TIBSQL.Create(Self); |
| 1584 |
|
|
try |
| 1585 |
|
|
Qry.Database := FBase.Database; |
| 1586 |
|
|
Qry.Transaction := FBase.Transaction; |
| 1587 |
|
|
Qry.SQL.Assign(FQSelect.SQL); |
| 1588 |
|
|
Qry.BatchOutput(OutputObject); |
| 1589 |
|
|
finally |
| 1590 |
|
|
Qry.Free; |
| 1591 |
|
|
end; |
| 1592 |
|
|
end; |
| 1593 |
|
|
|
| 1594 |
|
|
procedure TIBCustomDataSet.CancelUpdates; |
| 1595 |
|
|
var |
| 1596 |
|
|
CurUpdateTypes: TIBUpdateRecordTypes; |
| 1597 |
|
|
begin |
| 1598 |
|
|
if State in [dsEdit, dsInsert] then |
| 1599 |
|
|
Post; |
| 1600 |
|
|
if FCachedUpdates and FUpdatesPending then |
| 1601 |
|
|
begin |
| 1602 |
|
|
DisableControls; |
| 1603 |
|
|
CurUpdateTypes := UpdateRecordTypes; |
| 1604 |
|
|
UpdateRecordTypes := [cusModified, cusInserted, cusDeleted]; |
| 1605 |
|
|
try |
| 1606 |
|
|
First; |
| 1607 |
|
|
while not EOF do |
| 1608 |
|
|
begin |
| 1609 |
|
|
if UpdateStatus = usInserted then |
| 1610 |
|
|
RevertRecord |
| 1611 |
|
|
else |
| 1612 |
|
|
begin |
| 1613 |
|
|
RevertRecord; |
| 1614 |
|
|
Next; |
| 1615 |
|
|
end; |
| 1616 |
|
|
end; |
| 1617 |
|
|
finally |
| 1618 |
|
|
UpdateRecordTypes := CurUpdateTypes; |
| 1619 |
|
|
First; |
| 1620 |
|
|
FUpdatesPending := False; |
| 1621 |
|
|
EnableControls; |
| 1622 |
|
|
end; |
| 1623 |
|
|
end; |
| 1624 |
|
|
end; |
| 1625 |
|
|
|
| 1626 |
|
|
function TIBCustomDataSet.GetFieldPosition(AliasName: string): integer; |
| 1627 |
|
|
var i: integer; |
| 1628 |
|
|
Prepared: boolean; |
| 1629 |
|
|
begin |
| 1630 |
|
|
Result := 0; |
| 1631 |
|
|
Prepared := FInternalPrepared; |
| 1632 |
|
|
if not Prepared then |
| 1633 |
|
|
InternalPrepare; |
| 1634 |
|
|
try |
| 1635 |
|
|
for i := 0 to Length(FAliasNameList) - 1 do |
| 1636 |
|
|
if FAliasNameList[i] = AliasName then |
| 1637 |
|
|
begin |
| 1638 |
|
|
Result := i + 1; |
| 1639 |
|
|
Exit |
| 1640 |
|
|
end; |
| 1641 |
|
|
finally |
| 1642 |
|
|
if not Prepared then |
| 1643 |
|
|
InternalUnPrepare; |
| 1644 |
|
|
end; |
| 1645 |
|
|
end; |
| 1646 |
|
|
|
| 1647 |
|
|
procedure TIBCustomDataSet.ActivateConnection; |
| 1648 |
|
|
begin |
| 1649 |
|
|
if not Assigned(Database) then |
| 1650 |
|
|
IBError(ibxeDatabaseNotAssigned, [nil]); |
| 1651 |
|
|
if not Assigned(Transaction) then |
| 1652 |
|
|
IBError(ibxeTransactionNotAssigned, [nil]); |
| 1653 |
|
|
if not Database.Connected then Database.Open; |
| 1654 |
|
|
end; |
| 1655 |
|
|
|
| 1656 |
|
|
function TIBCustomDataSet.ActivateTransaction: Boolean; |
| 1657 |
|
|
begin |
| 1658 |
|
|
Result := False; |
| 1659 |
tony |
45 |
if AllowAutoActivateTransaction or (csDesigning in ComponentState) then |
| 1660 |
tony |
33 |
begin |
| 1661 |
tony |
45 |
if not Assigned(Transaction) then |
| 1662 |
|
|
IBError(ibxeTransactionNotAssigned, [nil]); |
| 1663 |
|
|
if not Transaction.Active then |
| 1664 |
|
|
begin |
| 1665 |
|
|
Result := True; |
| 1666 |
|
|
Transaction.StartTransaction; |
| 1667 |
|
|
FDidActivate := True; |
| 1668 |
|
|
end; |
| 1669 |
tony |
33 |
end; |
| 1670 |
|
|
end; |
| 1671 |
|
|
|
| 1672 |
|
|
procedure TIBCustomDataSet.DeactivateTransaction; |
| 1673 |
|
|
var |
| 1674 |
|
|
i: Integer; |
| 1675 |
|
|
begin |
| 1676 |
|
|
if not Assigned(Transaction) then |
| 1677 |
|
|
IBError(ibxeTransactionNotAssigned, [nil]); |
| 1678 |
|
|
with Transaction do |
| 1679 |
|
|
begin |
| 1680 |
|
|
for i := 0 to SQLObjectCount - 1 do |
| 1681 |
|
|
begin |
| 1682 |
|
|
if (SQLObjects[i] <> nil) and ((SQLObjects[i]).owner is TDataSet) then |
| 1683 |
|
|
begin |
| 1684 |
|
|
if TDataSet(SQLObjects[i].owner).Active then |
| 1685 |
|
|
begin |
| 1686 |
|
|
FDidActivate := False; |
| 1687 |
|
|
exit; |
| 1688 |
|
|
end; |
| 1689 |
|
|
end; |
| 1690 |
|
|
end; |
| 1691 |
|
|
end; |
| 1692 |
|
|
FInternalPrepared := False; |
| 1693 |
|
|
if Transaction.InTransaction then |
| 1694 |
|
|
Transaction.Commit; |
| 1695 |
|
|
FDidActivate := False; |
| 1696 |
|
|
end; |
| 1697 |
|
|
|
| 1698 |
|
|
procedure TIBCustomDataSet.CheckDatasetClosed; |
| 1699 |
|
|
begin |
| 1700 |
|
|
if FOpen then |
| 1701 |
|
|
IBError(ibxeDatasetOpen, [nil]); |
| 1702 |
|
|
end; |
| 1703 |
|
|
|
| 1704 |
|
|
procedure TIBCustomDataSet.CheckDatasetOpen; |
| 1705 |
|
|
begin |
| 1706 |
|
|
if not FOpen then |
| 1707 |
|
|
IBError(ibxeDatasetClosed, [nil]); |
| 1708 |
|
|
end; |
| 1709 |
|
|
|
| 1710 |
|
|
function TIBCustomDataSet.CreateParser: TSelectSQLParser; |
| 1711 |
|
|
begin |
| 1712 |
|
|
Result := TSelectSQLParser.Create(self,FBaseSQLSelect); |
| 1713 |
|
|
Result.OnSQLChanging := SQLChanging |
| 1714 |
|
|
end; |
| 1715 |
|
|
|
| 1716 |
|
|
procedure TIBCustomDataSet.CheckNotUniDirectional; |
| 1717 |
|
|
begin |
| 1718 |
|
|
if UniDirectional then |
| 1719 |
|
|
IBError(ibxeDataSetUniDirectional, [nil]); |
| 1720 |
|
|
end; |
| 1721 |
|
|
|
| 1722 |
|
|
procedure TIBCustomDataSet.AdjustRecordOnInsert(Buffer: Pointer); |
| 1723 |
|
|
begin |
| 1724 |
|
|
with PRecordData(Buffer)^ do |
| 1725 |
|
|
if (State = dsInsert) and (not Modified) then |
| 1726 |
|
|
begin |
| 1727 |
|
|
rdRecordNumber := FRecordCount; |
| 1728 |
|
|
FCurrentRecord := FRecordCount; |
| 1729 |
|
|
end; |
| 1730 |
|
|
end; |
| 1731 |
|
|
|
| 1732 |
|
|
function TIBCustomDataSet.CanEdit: Boolean; |
| 1733 |
|
|
var |
| 1734 |
|
|
Buff: PRecordData; |
| 1735 |
|
|
begin |
| 1736 |
|
|
Buff := PRecordData(GetActiveBuf); |
| 1737 |
|
|
result := (FQModify.SQL.Text <> '') or |
| 1738 |
|
|
(Assigned(FUpdateObject) and (FUpdateObject.GetSQL(ukModify).Text <> '')) or |
| 1739 |
|
|
((Buff <> nil) and (Buff^.rdCachedUpdateStatus = cusInserted) and |
| 1740 |
|
|
(FCachedUpdates)); |
| 1741 |
|
|
end; |
| 1742 |
|
|
|
| 1743 |
|
|
function TIBCustomDataSet.CanInsert: Boolean; |
| 1744 |
|
|
begin |
| 1745 |
|
|
result := (FQInsert.SQL.Text <> '') or |
| 1746 |
|
|
(Assigned(FUpdateObject) and (FUpdateObject.GetSQL(ukInsert).Text <> '')); |
| 1747 |
|
|
end; |
| 1748 |
|
|
|
| 1749 |
|
|
function TIBCustomDataSet.CanDelete: Boolean; |
| 1750 |
|
|
begin |
| 1751 |
|
|
if (FQDelete.SQL.Text <> '') or |
| 1752 |
|
|
(Assigned(FUpdateObject) and (FUpdateObject.GetSQL(ukDelete).Text <> '')) then |
| 1753 |
|
|
result := True |
| 1754 |
|
|
else |
| 1755 |
|
|
result := False; |
| 1756 |
|
|
end; |
| 1757 |
|
|
|
| 1758 |
|
|
function TIBCustomDataSet.CanRefresh: Boolean; |
| 1759 |
|
|
begin |
| 1760 |
|
|
result := (FQRefresh.SQL.Text <> '') or |
| 1761 |
|
|
(Assigned(FUpdateObject) and (FUpdateObject.RefreshSQL.Text <> '')); |
| 1762 |
|
|
end; |
| 1763 |
|
|
|
| 1764 |
|
|
procedure TIBCustomDataSet.CheckEditState; |
| 1765 |
|
|
begin |
| 1766 |
|
|
case State of |
| 1767 |
|
|
{ Check all the wsEditMode types } |
| 1768 |
|
|
dsEdit, dsInsert, dsSetKey, dsCalcFields, dsFilter, |
| 1769 |
|
|
dsNewValue, dsInternalCalc : |
| 1770 |
|
|
begin |
| 1771 |
|
|
if (State in [dsEdit]) and (not CanEdit) then |
| 1772 |
|
|
IBError(ibxeCannotUpdate, [nil]); |
| 1773 |
|
|
if (State in [dsInsert]) and (not CanInsert) then |
| 1774 |
|
|
IBError(ibxeCannotInsert, [nil]); |
| 1775 |
|
|
end; |
| 1776 |
|
|
else |
| 1777 |
|
|
IBError(ibxeNotEditing, []) |
| 1778 |
|
|
end; |
| 1779 |
|
|
end; |
| 1780 |
|
|
|
| 1781 |
|
|
procedure TIBCustomDataSet.ClearBlobCache; |
| 1782 |
|
|
var |
| 1783 |
|
|
i: Integer; |
| 1784 |
|
|
begin |
| 1785 |
|
|
for i := 0 to FBlobStreamList.Count - 1 do |
| 1786 |
|
|
begin |
| 1787 |
|
|
TIBBlobStream(FBlobStreamList[i]).Free; |
| 1788 |
|
|
FBlobStreamList[i] := nil; |
| 1789 |
|
|
end; |
| 1790 |
|
|
FBlobStreamList.Pack; |
| 1791 |
|
|
end; |
| 1792 |
|
|
|
| 1793 |
tony |
45 |
procedure TIBCustomDataSet.ClearArrayCache; |
| 1794 |
|
|
var |
| 1795 |
|
|
i: Integer; |
| 1796 |
|
|
begin |
| 1797 |
|
|
for i := 0 to FArrayList.Count - 1 do |
| 1798 |
|
|
begin |
| 1799 |
|
|
TIBArray(FArrayList[i]).Free; |
| 1800 |
|
|
FArrayList[i] := nil; |
| 1801 |
|
|
end; |
| 1802 |
|
|
FArrayList.Pack; |
| 1803 |
|
|
end; |
| 1804 |
|
|
|
| 1805 |
tony |
33 |
procedure TIBCustomDataSet.CopyRecordBuffer(Source, Dest: Pointer); |
| 1806 |
|
|
begin |
| 1807 |
|
|
Move(Source^, Dest^, FRecordBufferSize); |
| 1808 |
|
|
end; |
| 1809 |
|
|
|
| 1810 |
|
|
procedure TIBCustomDataSet.DoBeforeDatabaseDisconnect(Sender: TObject); |
| 1811 |
|
|
begin |
| 1812 |
|
|
if Active then |
| 1813 |
|
|
Active := False; |
| 1814 |
tony |
45 |
InternalUnPrepare; |
| 1815 |
tony |
33 |
if Assigned(FBeforeDatabaseDisconnect) then |
| 1816 |
|
|
FBeforeDatabaseDisconnect(Sender); |
| 1817 |
|
|
end; |
| 1818 |
|
|
|
| 1819 |
|
|
procedure TIBCustomDataSet.DoAfterDatabaseDisconnect(Sender: TObject); |
| 1820 |
|
|
begin |
| 1821 |
|
|
if Assigned(FAfterDatabaseDisconnect) then |
| 1822 |
|
|
FAfterDatabaseDisconnect(Sender); |
| 1823 |
|
|
end; |
| 1824 |
|
|
|
| 1825 |
|
|
procedure TIBCustomDataSet.DoDatabaseFree(Sender: TObject); |
| 1826 |
|
|
begin |
| 1827 |
|
|
if Assigned(FDatabaseFree) then |
| 1828 |
|
|
FDatabaseFree(Sender); |
| 1829 |
|
|
end; |
| 1830 |
|
|
|
| 1831 |
|
|
procedure TIBCustomDataSet.DoBeforeTransactionEnd(Sender: TObject; |
| 1832 |
|
|
Action: TTransactionAction); |
| 1833 |
|
|
begin |
| 1834 |
|
|
FCloseAction := Action; |
| 1835 |
|
|
FInTransactionEnd := true; |
| 1836 |
|
|
try |
| 1837 |
|
|
if Active then |
| 1838 |
|
|
Active := False; |
| 1839 |
|
|
finally |
| 1840 |
|
|
FInTransactionEnd := false; |
| 1841 |
|
|
end; |
| 1842 |
|
|
if FQSelect <> nil then |
| 1843 |
|
|
FQSelect.FreeHandle; |
| 1844 |
|
|
if FQDelete <> nil then |
| 1845 |
|
|
FQDelete.FreeHandle; |
| 1846 |
|
|
if FQInsert <> nil then |
| 1847 |
|
|
FQInsert.FreeHandle; |
| 1848 |
|
|
if FQModify <> nil then |
| 1849 |
|
|
FQModify.FreeHandle; |
| 1850 |
|
|
if FQRefresh <> nil then |
| 1851 |
|
|
FQRefresh.FreeHandle; |
| 1852 |
tony |
50 |
InternalUnPrepare; |
| 1853 |
tony |
33 |
if Assigned(FBeforeTransactionEnd) then |
| 1854 |
|
|
FBeforeTransactionEnd(Sender); |
| 1855 |
|
|
end; |
| 1856 |
|
|
|
| 1857 |
|
|
procedure TIBCustomDataSet.DoAfterTransactionEnd(Sender: TObject); |
| 1858 |
|
|
begin |
| 1859 |
|
|
if Assigned(FAfterTransactionEnd) then |
| 1860 |
|
|
FAfterTransactionEnd(Sender); |
| 1861 |
|
|
end; |
| 1862 |
|
|
|
| 1863 |
|
|
procedure TIBCustomDataSet.DoTransactionFree(Sender: TObject); |
| 1864 |
|
|
begin |
| 1865 |
|
|
if Assigned(FTransactionFree) then |
| 1866 |
|
|
FTransactionFree(Sender); |
| 1867 |
|
|
end; |
| 1868 |
|
|
|
| 1869 |
tony |
45 |
procedure TIBCustomDataSet.InitModelBuffer(Qry: TIBSQL; Buffer: PChar); |
| 1870 |
|
|
var i, j: Integer; |
| 1871 |
|
|
FieldsLoaded: integer; |
| 1872 |
|
|
p: PRecordData; |
| 1873 |
|
|
colMetadata: IColumnMetaData; |
| 1874 |
|
|
begin |
| 1875 |
|
|
p := PRecordData(Buffer); |
| 1876 |
|
|
{ Get record information } |
| 1877 |
|
|
p^.rdBookmarkFlag := bfCurrent; |
| 1878 |
|
|
p^.rdFieldCount := Qry.FieldCount; |
| 1879 |
|
|
p^.rdRecordNumber := -1; |
| 1880 |
|
|
p^.rdUpdateStatus := usUnmodified; |
| 1881 |
|
|
p^.rdCachedUpdateStatus := cusUnmodified; |
| 1882 |
|
|
p^.rdSavedOffset := $FFFFFFFF; |
| 1883 |
|
|
|
| 1884 |
|
|
{ Load up the fields } |
| 1885 |
|
|
FieldsLoaded := FQSelect.MetaData.Count; |
| 1886 |
|
|
j := 1; |
| 1887 |
|
|
for i := 0 to Qry.MetaData.Count - 1 do |
| 1888 |
|
|
begin |
| 1889 |
|
|
if (Qry = FQSelect) then |
| 1890 |
|
|
j := i + 1 |
| 1891 |
|
|
else |
| 1892 |
|
|
begin |
| 1893 |
|
|
if FieldsLoaded = 0 then |
| 1894 |
|
|
break; |
| 1895 |
|
|
j := FQSelect.FieldIndex[Qry[i].Name] + 1; |
| 1896 |
|
|
if j < 1 then |
| 1897 |
|
|
continue |
| 1898 |
|
|
else |
| 1899 |
|
|
Dec(FieldsLoaded); |
| 1900 |
|
|
end; |
| 1901 |
|
|
if j > 0 then |
| 1902 |
|
|
begin |
| 1903 |
|
|
colMetadata := Qry.MetaData[i]; |
| 1904 |
|
|
with p^.rdFields[j], FFieldColumns^[j] do |
| 1905 |
|
|
begin |
| 1906 |
|
|
fdDataType := colMetadata.GetSQLType; |
| 1907 |
|
|
if fdDataType = SQL_BLOB then |
| 1908 |
|
|
fdDataScale := 0 |
| 1909 |
|
|
else |
| 1910 |
|
|
fdDataScale := colMetadata.getScale; |
| 1911 |
|
|
fdNullable := colMetadata.getIsNullable; |
| 1912 |
|
|
fdIsNull := true; |
| 1913 |
|
|
fdDataSize := colMetadata.GetSize; |
| 1914 |
|
|
fdDataLength := 0; |
| 1915 |
|
|
fdCodePage := CP_NONE; |
| 1916 |
|
|
|
| 1917 |
|
|
case fdDataType of |
| 1918 |
|
|
SQL_TIMESTAMP, |
| 1919 |
|
|
SQL_TYPE_DATE, |
| 1920 |
|
|
SQL_TYPE_TIME: |
| 1921 |
|
|
fdDataSize := SizeOf(TDateTime); |
| 1922 |
|
|
SQL_SHORT, SQL_LONG: |
| 1923 |
|
|
begin |
| 1924 |
|
|
if (fdDataScale = 0) then |
| 1925 |
|
|
fdDataSize := SizeOf(Integer) |
| 1926 |
|
|
else |
| 1927 |
|
|
if (fdDataScale >= (-4)) then |
| 1928 |
|
|
fdDataSize := SizeOf(Currency) |
| 1929 |
|
|
else |
| 1930 |
|
|
fdDataSize := SizeOf(Double); |
| 1931 |
|
|
end; |
| 1932 |
|
|
SQL_INT64: |
| 1933 |
|
|
begin |
| 1934 |
|
|
if (fdDataScale = 0) then |
| 1935 |
|
|
fdDataSize := SizeOf(Int64) |
| 1936 |
|
|
else |
| 1937 |
|
|
if (fdDataScale >= (-4)) then |
| 1938 |
|
|
fdDataSize := SizeOf(Currency) |
| 1939 |
|
|
else |
| 1940 |
|
|
fdDataSize := SizeOf(Double); |
| 1941 |
|
|
end; |
| 1942 |
|
|
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: |
| 1943 |
|
|
fdDataSize := SizeOf(Double); |
| 1944 |
|
|
SQL_BOOLEAN: |
| 1945 |
|
|
fdDataSize := SizeOf(wordBool); |
| 1946 |
|
|
SQL_VARYING, |
| 1947 |
|
|
SQL_TEXT, |
| 1948 |
|
|
SQL_BLOB: |
| 1949 |
|
|
fdCodePage := Qry.Metadata[i].getCodePage; |
| 1950 |
|
|
end; |
| 1951 |
|
|
fdDataOfs := FRecordSize; |
| 1952 |
|
|
Inc(FRecordSize, fdDataSize); |
| 1953 |
|
|
end; |
| 1954 |
|
|
end; |
| 1955 |
|
|
end; |
| 1956 |
|
|
end; |
| 1957 |
|
|
|
| 1958 |
tony |
33 |
{ Read the record from FQSelect.Current into the record buffer |
| 1959 |
|
|
Then write the buffer to in memory cache } |
| 1960 |
|
|
procedure TIBCustomDataSet.FetchCurrentRecordToBuffer(Qry: TIBSQL; |
| 1961 |
|
|
RecordNumber: Integer; Buffer: PChar); |
| 1962 |
|
|
var |
| 1963 |
|
|
pbd: PBlobDataArray; |
| 1964 |
tony |
45 |
pda: PArrayDataArray; |
| 1965 |
tony |
33 |
i, j: Integer; |
| 1966 |
tony |
56 |
LocalData: PByte; |
| 1967 |
tony |
33 |
LocalDate, LocalDouble: Double; |
| 1968 |
|
|
LocalInt: Integer; |
| 1969 |
|
|
LocalBool: wordBool; |
| 1970 |
|
|
LocalInt64: Int64; |
| 1971 |
|
|
LocalCurrency: Currency; |
| 1972 |
|
|
FieldsLoaded: Integer; |
| 1973 |
tony |
45 |
p: PRecordData; |
| 1974 |
tony |
33 |
begin |
| 1975 |
tony |
45 |
if RecordNumber = -1 then |
| 1976 |
|
|
begin |
| 1977 |
|
|
InitModelBuffer(Qry,Buffer); |
| 1978 |
|
|
Exit; |
| 1979 |
|
|
end; |
| 1980 |
tony |
33 |
p := PRecordData(Buffer); |
| 1981 |
|
|
{ Make sure blob cache is empty } |
| 1982 |
|
|
pbd := PBlobDataArray(Buffer + FBlobCacheOffset); |
| 1983 |
tony |
45 |
pda := PArrayDataArray(Buffer + FArrayCacheOffset); |
| 1984 |
|
|
for i := 0 to BlobFieldCount - 1 do |
| 1985 |
|
|
pbd^[i] := nil; |
| 1986 |
|
|
for i := 0 to ArrayFieldCount - 1 do |
| 1987 |
|
|
pda^[i] := nil; |
| 1988 |
|
|
|
| 1989 |
tony |
33 |
{ Get record information } |
| 1990 |
|
|
p^.rdBookmarkFlag := bfCurrent; |
| 1991 |
tony |
45 |
p^.rdFieldCount := Qry.FieldCount; |
| 1992 |
tony |
33 |
p^.rdRecordNumber := RecordNumber; |
| 1993 |
|
|
p^.rdUpdateStatus := usUnmodified; |
| 1994 |
|
|
p^.rdCachedUpdateStatus := cusUnmodified; |
| 1995 |
|
|
p^.rdSavedOffset := $FFFFFFFF; |
| 1996 |
|
|
|
| 1997 |
|
|
{ Load up the fields } |
| 1998 |
tony |
45 |
FieldsLoaded := FQSelect.MetaData.Count; |
| 1999 |
tony |
33 |
j := 1; |
| 2000 |
tony |
45 |
for i := 0 to Qry.FieldCount - 1 do |
| 2001 |
tony |
33 |
begin |
| 2002 |
|
|
if (Qry = FQSelect) then |
| 2003 |
|
|
j := i + 1 |
| 2004 |
tony |
45 |
else |
| 2005 |
|
|
begin |
| 2006 |
tony |
33 |
if FieldsLoaded = 0 then |
| 2007 |
|
|
break; |
| 2008 |
tony |
45 |
j := FQSelect.FieldIndex[Qry[i].Name] + 1; |
| 2009 |
tony |
33 |
if j < 1 then |
| 2010 |
|
|
continue |
| 2011 |
|
|
else |
| 2012 |
|
|
Dec(FieldsLoaded); |
| 2013 |
|
|
end; |
| 2014 |
tony |
45 |
with FQSelect.MetaData[j - 1] do |
| 2015 |
|
|
if GetAliasname = 'IBX_INTERNAL_DBKEY' then {do not localize} |
| 2016 |
tony |
33 |
begin |
| 2017 |
tony |
45 |
if (GetSize <= 8) then |
| 2018 |
|
|
p^.rdDBKey := PIBDBKEY(Qry[i].AsPointer)^; |
| 2019 |
tony |
33 |
continue; |
| 2020 |
|
|
end; |
| 2021 |
tony |
45 |
if j > 0 then |
| 2022 |
tony |
33 |
begin |
| 2023 |
tony |
45 |
LocalData := nil; |
| 2024 |
|
|
with p^.rdFields[j], FFieldColumns^[j] do |
| 2025 |
|
|
begin |
| 2026 |
|
|
Qry.Current.GetData(i,fdIsNull,fdDataLength,LocalData); |
| 2027 |
|
|
if not fdIsNull then |
| 2028 |
tony |
33 |
begin |
| 2029 |
tony |
45 |
case fdDataType of {Get Formatted data for column types that need formatting} |
| 2030 |
|
|
SQL_TIMESTAMP: |
| 2031 |
|
|
begin |
| 2032 |
|
|
LocalDate := TimeStampToMSecs(DateTimeToTimeStamp(Qry[i].AsDateTime)); |
| 2033 |
tony |
56 |
LocalData := PByte(@LocalDate); |
| 2034 |
tony |
45 |
end; |
| 2035 |
|
|
SQL_TYPE_DATE: |
| 2036 |
|
|
begin |
| 2037 |
|
|
LocalInt := DateTimeToTimeStamp(Qry[i].AsDateTime).Date; |
| 2038 |
tony |
56 |
LocalData := PByte(@LocalInt); |
| 2039 |
tony |
45 |
end; |
| 2040 |
|
|
SQL_TYPE_TIME: |
| 2041 |
|
|
begin |
| 2042 |
|
|
LocalInt := DateTimeToTimeStamp(Qry[i].AsDateTime).Time; |
| 2043 |
tony |
56 |
LocalData := PByte(@LocalInt); |
| 2044 |
tony |
45 |
end; |
| 2045 |
|
|
SQL_SHORT, SQL_LONG: |
| 2046 |
|
|
begin |
| 2047 |
|
|
if (fdDataScale = 0) then |
| 2048 |
|
|
begin |
| 2049 |
|
|
LocalInt := Qry[i].AsLong; |
| 2050 |
tony |
56 |
LocalData := PByte(@LocalInt); |
| 2051 |
tony |
45 |
end |
| 2052 |
|
|
else |
| 2053 |
|
|
if (fdDataScale >= (-4)) then |
| 2054 |
|
|
begin |
| 2055 |
|
|
LocalCurrency := Qry[i].AsCurrency; |
| 2056 |
tony |
56 |
LocalData := PByte(@LocalCurrency); |
| 2057 |
tony |
45 |
end |
| 2058 |
|
|
else |
| 2059 |
|
|
begin |
| 2060 |
|
|
LocalDouble := Qry[i].AsDouble; |
| 2061 |
tony |
56 |
LocalData := PByte(@LocalDouble); |
| 2062 |
tony |
33 |
end; |
| 2063 |
tony |
45 |
end; |
| 2064 |
|
|
SQL_INT64: |
| 2065 |
|
|
begin |
| 2066 |
|
|
if (fdDataScale = 0) then |
| 2067 |
|
|
begin |
| 2068 |
|
|
LocalInt64 := Qry[i].AsInt64; |
| 2069 |
tony |
56 |
LocalData := PByte(@LocalInt64); |
| 2070 |
tony |
45 |
end |
| 2071 |
|
|
else |
| 2072 |
|
|
if (fdDataScale >= (-4)) then |
| 2073 |
|
|
begin |
| 2074 |
|
|
LocalCurrency := Qry[i].AsCurrency; |
| 2075 |
tony |
56 |
LocalData := PByte(@LocalCurrency); |
| 2076 |
tony |
45 |
end |
| 2077 |
|
|
else |
| 2078 |
|
|
begin |
| 2079 |
|
|
LocalDouble := Qry[i].AsDouble; |
| 2080 |
tony |
56 |
LocalData := PByte(@LocalDouble); |
| 2081 |
tony |
45 |
end |
| 2082 |
|
|
end; |
| 2083 |
|
|
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: |
| 2084 |
|
|
begin |
| 2085 |
|
|
LocalDouble := Qry[i].AsDouble; |
| 2086 |
tony |
56 |
LocalData := PByte(@LocalDouble); |
| 2087 |
tony |
45 |
end; |
| 2088 |
|
|
SQL_BOOLEAN: |
| 2089 |
|
|
begin |
| 2090 |
|
|
LocalBool := Qry[i].AsBoolean; |
| 2091 |
tony |
56 |
LocalData := PByte(@LocalBool); |
| 2092 |
tony |
45 |
end; |
| 2093 |
tony |
33 |
end; |
| 2094 |
tony |
45 |
|
| 2095 |
|
|
if fdDataType = SQL_VARYING then |
| 2096 |
|
|
Move(LocalData^, Buffer[fdDataOfs], fdDataLength) |
| 2097 |
|
|
else |
| 2098 |
|
|
Move(LocalData^, Buffer[fdDataOfs], fdDataSize) |
| 2099 |
tony |
33 |
end |
| 2100 |
tony |
45 |
else {Null column} |
| 2101 |
|
|
if fdDataType = SQL_VARYING then |
| 2102 |
|
|
FillChar(Buffer[fdDataOfs],fdDataLength,0) |
| 2103 |
tony |
33 |
else |
| 2104 |
tony |
45 |
FillChar(Buffer[fdDataOfs],fdDataSize,0); |
| 2105 |
tony |
33 |
end; |
| 2106 |
|
|
end; |
| 2107 |
|
|
end; |
| 2108 |
tony |
45 |
WriteRecordCache(RecordNumber, Buffer); |
| 2109 |
tony |
33 |
end; |
| 2110 |
|
|
|
| 2111 |
|
|
function TIBCustomDataSet.GetActiveBuf: PChar; |
| 2112 |
|
|
begin |
| 2113 |
|
|
case State of |
| 2114 |
|
|
dsBrowse: |
| 2115 |
|
|
if IsEmpty then |
| 2116 |
|
|
result := nil |
| 2117 |
|
|
else |
| 2118 |
|
|
result := ActiveBuffer; |
| 2119 |
|
|
dsEdit, dsInsert: |
| 2120 |
|
|
result := ActiveBuffer; |
| 2121 |
|
|
dsCalcFields: |
| 2122 |
|
|
result := CalcBuffer; |
| 2123 |
|
|
dsFilter: |
| 2124 |
|
|
result := FFilterBuffer; |
| 2125 |
|
|
dsNewValue: |
| 2126 |
|
|
result := ActiveBuffer; |
| 2127 |
|
|
dsOldValue: |
| 2128 |
|
|
if (PRecordData(ActiveBuffer)^.rdRecordNumber = |
| 2129 |
|
|
PRecordData(FOldBuffer)^.rdRecordNumber) then |
| 2130 |
|
|
result := FOldBuffer |
| 2131 |
|
|
else |
| 2132 |
|
|
result := ActiveBuffer; |
| 2133 |
|
|
else if not FOpen then |
| 2134 |
|
|
result := nil |
| 2135 |
|
|
else |
| 2136 |
|
|
result := ActiveBuffer; |
| 2137 |
|
|
end; |
| 2138 |
|
|
end; |
| 2139 |
|
|
|
| 2140 |
|
|
function TIBCustomDataSet.CachedUpdateStatus: TCachedUpdateStatus; |
| 2141 |
|
|
begin |
| 2142 |
|
|
if Active then |
| 2143 |
|
|
result := PRecordData(GetActiveBuf)^.rdCachedUpdateStatus |
| 2144 |
|
|
else |
| 2145 |
|
|
result := cusUnmodified; |
| 2146 |
|
|
end; |
| 2147 |
|
|
|
| 2148 |
|
|
function TIBCustomDataSet.GetDatabase: TIBDatabase; |
| 2149 |
|
|
begin |
| 2150 |
|
|
result := FBase.Database; |
| 2151 |
|
|
end; |
| 2152 |
|
|
|
| 2153 |
|
|
function TIBCustomDataSet.GetDeleteSQL: TStrings; |
| 2154 |
|
|
begin |
| 2155 |
|
|
result := FQDelete.SQL; |
| 2156 |
|
|
end; |
| 2157 |
|
|
|
| 2158 |
|
|
function TIBCustomDataSet.GetInsertSQL: TStrings; |
| 2159 |
|
|
begin |
| 2160 |
|
|
result := FQInsert.SQL; |
| 2161 |
|
|
end; |
| 2162 |
|
|
|
| 2163 |
tony |
45 |
function TIBCustomDataSet.GetSQLParams: ISQLParams; |
| 2164 |
tony |
33 |
begin |
| 2165 |
|
|
if not FInternalPrepared then |
| 2166 |
|
|
InternalPrepare; |
| 2167 |
|
|
result := FQSelect.Params; |
| 2168 |
|
|
end; |
| 2169 |
|
|
|
| 2170 |
|
|
function TIBCustomDataSet.GetRefreshSQL: TStrings; |
| 2171 |
|
|
begin |
| 2172 |
|
|
result := FQRefresh.SQL; |
| 2173 |
|
|
end; |
| 2174 |
|
|
|
| 2175 |
|
|
function TIBCustomDataSet.GetSelectSQL: TStrings; |
| 2176 |
|
|
begin |
| 2177 |
|
|
result := FQSelect.SQL; |
| 2178 |
|
|
end; |
| 2179 |
|
|
|
| 2180 |
tony |
45 |
function TIBCustomDataSet.GetStatementType: TIBSQLStatementTypes; |
| 2181 |
tony |
33 |
begin |
| 2182 |
tony |
45 |
result := FQSelect.SQLStatementType; |
| 2183 |
tony |
33 |
end; |
| 2184 |
|
|
|
| 2185 |
|
|
function TIBCustomDataSet.GetModifySQL: TStrings; |
| 2186 |
|
|
begin |
| 2187 |
|
|
result := FQModify.SQL; |
| 2188 |
|
|
end; |
| 2189 |
|
|
|
| 2190 |
|
|
function TIBCustomDataSet.GetTransaction: TIBTransaction; |
| 2191 |
|
|
begin |
| 2192 |
|
|
result := FBase.Transaction; |
| 2193 |
|
|
end; |
| 2194 |
|
|
|
| 2195 |
|
|
procedure TIBCustomDataSet.InternalDeleteRecord(Qry: TIBSQL; Buff: Pointer); |
| 2196 |
|
|
begin |
| 2197 |
|
|
if (Assigned(FUpdateObject) and (FUpdateObject.GetSQL(ukDelete).Text <> '')) then |
| 2198 |
|
|
FUpdateObject.Apply(ukDelete,Buff) |
| 2199 |
|
|
else |
| 2200 |
|
|
begin |
| 2201 |
|
|
SetInternalSQLParams(FQDelete, Buff); |
| 2202 |
|
|
FQDelete.ExecQuery; |
| 2203 |
|
|
end; |
| 2204 |
|
|
with PRecordData(Buff)^ do |
| 2205 |
|
|
begin |
| 2206 |
|
|
rdUpdateStatus := usDeleted; |
| 2207 |
|
|
rdCachedUpdateStatus := cusUnmodified; |
| 2208 |
|
|
end; |
| 2209 |
|
|
WriteRecordCache(PRecordData(Buff)^.rdRecordNumber, Buff); |
| 2210 |
|
|
end; |
| 2211 |
|
|
|
| 2212 |
|
|
function TIBCustomDataSet.InternalLocate(const KeyFields: string; |
| 2213 |
|
|
const KeyValues: Variant; Options: TLocateOptions): Boolean; |
| 2214 |
|
|
var |
| 2215 |
|
|
keyFieldList: TList; |
| 2216 |
|
|
CurBookmark: TBookmark; |
| 2217 |
|
|
fieldValue: Variant; |
| 2218 |
|
|
lookupValues: array of variant; |
| 2219 |
|
|
i, fieldCount: Integer; |
| 2220 |
|
|
fieldValueAsString: string; |
| 2221 |
|
|
lookupValueAsString: string; |
| 2222 |
|
|
begin |
| 2223 |
|
|
keyFieldList := TList.Create; |
| 2224 |
|
|
try |
| 2225 |
|
|
GetFieldList(keyFieldList, KeyFields); |
| 2226 |
|
|
fieldCount := keyFieldList.Count; |
| 2227 |
|
|
CurBookmark := Bookmark; |
| 2228 |
|
|
result := false; |
| 2229 |
|
|
SetLength(lookupValues, fieldCount); |
| 2230 |
|
|
if not EOF then |
| 2231 |
|
|
begin |
| 2232 |
|
|
for i := 0 to fieldCount - 1 do {expand key values into lookupValues array} |
| 2233 |
|
|
begin |
| 2234 |
|
|
if VarIsArray(KeyValues) then |
| 2235 |
|
|
lookupValues[i] := KeyValues[i] |
| 2236 |
|
|
else |
| 2237 |
|
|
if i > 0 then |
| 2238 |
|
|
lookupValues[i] := NULL |
| 2239 |
|
|
else |
| 2240 |
|
|
lookupValues[0] := KeyValues; |
| 2241 |
|
|
|
| 2242 |
|
|
{convert to upper case is case insensitive search} |
| 2243 |
|
|
if (TField(keyFieldList[i]).DataType = ftString) and |
| 2244 |
|
|
not VarIsNull(lookupValues[i]) and (loCaseInsensitive in Options) then |
| 2245 |
|
|
lookupValues[i] := UpperCase(lookupValues[i]); |
| 2246 |
|
|
end; |
| 2247 |
|
|
end; |
| 2248 |
|
|
while not result and not EOF do {search for a matching record} |
| 2249 |
|
|
begin |
| 2250 |
|
|
i := 0; |
| 2251 |
|
|
result := true; |
| 2252 |
|
|
while result and (i < fieldCount) do |
| 2253 |
|
|
{see if all of the key fields matches} |
| 2254 |
|
|
begin |
| 2255 |
|
|
fieldValue := TField(keyFieldList[i]).Value; |
| 2256 |
|
|
result := not (VarIsNull(fieldValue) xor VarIsNull(lookupValues[i])); |
| 2257 |
|
|
if result and not VarIsNull(fieldValue) then |
| 2258 |
|
|
begin |
| 2259 |
|
|
try |
| 2260 |
|
|
if TField(keyFieldList[i]).DataType = ftString then |
| 2261 |
|
|
begin |
| 2262 |
|
|
{strings need special handling because of the locate options that |
| 2263 |
|
|
apply to them} |
| 2264 |
|
|
fieldValueAsString := TField(keyFieldList[i]).AsString; |
| 2265 |
|
|
lookupValueAsString := lookupValues[i]; |
| 2266 |
|
|
if (loCaseInsensitive in Options) then |
| 2267 |
|
|
fieldValueAsString := UpperCase(fieldValueAsString); |
| 2268 |
|
|
|
| 2269 |
|
|
if (loPartialKey in Options) then |
| 2270 |
|
|
result := result and (Pos(lookupValueAsString, fieldValueAsString) = 1) |
| 2271 |
|
|
else |
| 2272 |
|
|
result := result and (fieldValueAsString = lookupValueAsString); |
| 2273 |
|
|
end |
| 2274 |
|
|
else |
| 2275 |
|
|
result := result and (lookupValues[i] = |
| 2276 |
|
|
VarAsType(fieldValue, VarType(lookupValues[i]))); |
| 2277 |
|
|
except on EVariantError do |
| 2278 |
|
|
result := False; |
| 2279 |
|
|
end; |
| 2280 |
|
|
end; |
| 2281 |
|
|
Inc(i); |
| 2282 |
|
|
end; |
| 2283 |
|
|
if not result then |
| 2284 |
|
|
Next; |
| 2285 |
|
|
end; |
| 2286 |
|
|
if not result then |
| 2287 |
|
|
Bookmark := CurBookmark |
| 2288 |
|
|
else |
| 2289 |
|
|
CursorPosChanged; |
| 2290 |
|
|
finally |
| 2291 |
|
|
keyFieldList.Free; |
| 2292 |
|
|
SetLength(lookupValues,0) |
| 2293 |
|
|
end; |
| 2294 |
|
|
end; |
| 2295 |
|
|
|
| 2296 |
|
|
procedure TIBCustomDataSet.InternalPostRecord(Qry: TIBSQL; Buff: Pointer); |
| 2297 |
|
|
var |
| 2298 |
tony |
45 |
i, j, k, arr: Integer; |
| 2299 |
tony |
33 |
pbd: PBlobDataArray; |
| 2300 |
tony |
45 |
pda: PArrayDataArray; |
| 2301 |
tony |
33 |
begin |
| 2302 |
|
|
pbd := PBlobDataArray(PChar(Buff) + FBlobCacheOffset); |
| 2303 |
tony |
45 |
pda := PArrayDataArray(PChar(Buff) + FArrayCacheOffset); |
| 2304 |
|
|
j := 0; arr := 0; |
| 2305 |
tony |
33 |
for i := 0 to FieldCount - 1 do |
| 2306 |
|
|
if Fields[i].IsBlob then |
| 2307 |
|
|
begin |
| 2308 |
|
|
k := FMappedFieldPosition[Fields[i].FieldNo -1]; |
| 2309 |
|
|
if pbd^[j] <> nil then |
| 2310 |
|
|
begin |
| 2311 |
|
|
pbd^[j].Finalize; |
| 2312 |
|
|
PISC_QUAD( |
| 2313 |
tony |
45 |
PChar(Buff) + FFieldColumns^[k].fdDataOfs)^ := |
| 2314 |
tony |
33 |
pbd^[j].BlobID; |
| 2315 |
|
|
PRecordData(Buff)^.rdFields[k].fdIsNull := pbd^[j].Size = 0; |
| 2316 |
tony |
45 |
end |
| 2317 |
|
|
else |
| 2318 |
|
|
begin |
| 2319 |
|
|
PRecordData(Buff)^.rdFields[k].fdIsNull := true; |
| 2320 |
|
|
with PISC_QUAD(PChar(Buff) + FFieldColumns^[k].fdDataOfs)^ do |
| 2321 |
|
|
begin |
| 2322 |
|
|
gds_quad_high := 0; |
| 2323 |
|
|
gds_quad_low := 0; |
| 2324 |
|
|
end; |
| 2325 |
tony |
33 |
end; |
| 2326 |
|
|
Inc(j); |
| 2327 |
tony |
45 |
end |
| 2328 |
|
|
else |
| 2329 |
|
|
if Fields[i] is TIBArrayField then |
| 2330 |
|
|
begin |
| 2331 |
|
|
if pda^[arr] <> nil then |
| 2332 |
|
|
begin |
| 2333 |
|
|
k := FMappedFieldPosition[Fields[i].FieldNo -1]; |
| 2334 |
|
|
PISC_QUAD( |
| 2335 |
|
|
PChar(Buff) + FFieldColumns^[k].fdDataOfs)^ := pda^[arr].ArrayIntf.GetArrayID; |
| 2336 |
|
|
PRecordData(Buff)^.rdFields[k].fdIsNull := pda^[arr].ArrayIntf.IsEmpty; |
| 2337 |
|
|
end; |
| 2338 |
|
|
Inc(arr); |
| 2339 |
tony |
33 |
end; |
| 2340 |
|
|
if Assigned(FUpdateObject) then |
| 2341 |
|
|
begin |
| 2342 |
|
|
if (Qry = FQDelete) then |
| 2343 |
|
|
FUpdateObject.Apply(ukDelete,Buff) |
| 2344 |
|
|
else if (Qry = FQInsert) then |
| 2345 |
|
|
FUpdateObject.Apply(ukInsert,Buff) |
| 2346 |
|
|
else |
| 2347 |
|
|
FUpdateObject.Apply(ukModify,Buff); |
| 2348 |
|
|
end |
| 2349 |
|
|
else begin |
| 2350 |
|
|
SetInternalSQLParams(Qry, Buff); |
| 2351 |
|
|
Qry.ExecQuery; |
| 2352 |
|
|
end; |
| 2353 |
|
|
PRecordData(Buff)^.rdUpdateStatus := usUnmodified; |
| 2354 |
|
|
PRecordData(Buff)^.rdCachedUpdateStatus := cusUnmodified; |
| 2355 |
|
|
SetModified(False); |
| 2356 |
|
|
WriteRecordCache(PRecordData(Buff)^.rdRecordNumber, Buff); |
| 2357 |
|
|
if (FForcedRefresh or FNeedsRefresh) and CanRefresh then |
| 2358 |
|
|
InternalRefreshRow; |
| 2359 |
|
|
end; |
| 2360 |
|
|
|
| 2361 |
|
|
procedure TIBCustomDataSet.InternalRefreshRow; |
| 2362 |
|
|
var |
| 2363 |
|
|
Buff: PChar; |
| 2364 |
|
|
ofs: DWORD; |
| 2365 |
|
|
Qry: TIBSQL; |
| 2366 |
|
|
begin |
| 2367 |
|
|
FBase.SetCursor; |
| 2368 |
|
|
try |
| 2369 |
|
|
Buff := GetActiveBuf; |
| 2370 |
|
|
if CanRefresh then |
| 2371 |
|
|
begin |
| 2372 |
|
|
if Buff <> nil then |
| 2373 |
|
|
begin |
| 2374 |
|
|
if (Assigned(FUpdateObject) and (FUpdateObject.RefreshSQL.Text <> '')) then |
| 2375 |
|
|
begin |
| 2376 |
|
|
Qry := TIBSQL.Create(self); |
| 2377 |
|
|
Qry.Database := Database; |
| 2378 |
|
|
Qry.Transaction := Transaction; |
| 2379 |
|
|
Qry.GoToFirstRecordOnExecute := False; |
| 2380 |
|
|
Qry.SQL.Text := FUpdateObject.RefreshSQL.Text; |
| 2381 |
|
|
end |
| 2382 |
|
|
else |
| 2383 |
|
|
Qry := FQRefresh; |
| 2384 |
|
|
SetInternalSQLParams(Qry, Buff); |
| 2385 |
|
|
Qry.ExecQuery; |
| 2386 |
|
|
try |
| 2387 |
tony |
45 |
if (Qry.SQLStatementType = SQLExecProcedure) or Qry.Next then |
| 2388 |
tony |
33 |
begin |
| 2389 |
|
|
ofs := PRecordData(Buff)^.rdSavedOffset; |
| 2390 |
|
|
FetchCurrentRecordToBuffer(Qry, |
| 2391 |
|
|
PRecordData(Buff)^.rdRecordNumber, |
| 2392 |
|
|
Buff); |
| 2393 |
|
|
if FCachedUpdates and (ofs <> $FFFFFFFF) then |
| 2394 |
|
|
begin |
| 2395 |
|
|
PRecordData(Buff)^.rdSavedOffset := ofs; |
| 2396 |
|
|
WriteRecordCache(PRecordData(Buff)^.rdRecordNumber, Buff); |
| 2397 |
|
|
SaveOldBuffer(Buff); |
| 2398 |
|
|
end; |
| 2399 |
|
|
end; |
| 2400 |
|
|
finally |
| 2401 |
|
|
Qry.Close; |
| 2402 |
|
|
end; |
| 2403 |
|
|
if Qry <> FQRefresh then |
| 2404 |
|
|
Qry.Free; |
| 2405 |
|
|
end |
| 2406 |
|
|
end |
| 2407 |
|
|
else |
| 2408 |
|
|
IBError(ibxeCannotRefresh, [nil]); |
| 2409 |
|
|
finally |
| 2410 |
|
|
FBase.RestoreCursor; |
| 2411 |
|
|
end; |
| 2412 |
|
|
end; |
| 2413 |
|
|
|
| 2414 |
|
|
procedure TIBCustomDataSet.InternalRevertRecord(RecordNumber: Integer); |
| 2415 |
|
|
var |
| 2416 |
|
|
NewBuffer, OldBuffer: PRecordData; |
| 2417 |
|
|
|
| 2418 |
|
|
begin |
| 2419 |
|
|
NewBuffer := nil; |
| 2420 |
|
|
OldBuffer := nil; |
| 2421 |
|
|
NewBuffer := PRecordData(AllocRecordBuffer); |
| 2422 |
|
|
OldBuffer := PRecordData(AllocRecordBuffer); |
| 2423 |
|
|
try |
| 2424 |
|
|
ReadRecordCache(RecordNumber, PChar(NewBuffer), False); |
| 2425 |
|
|
ReadRecordCache(RecordNumber, PChar(OldBuffer), True); |
| 2426 |
|
|
case NewBuffer^.rdCachedUpdateStatus of |
| 2427 |
|
|
cusInserted: |
| 2428 |
|
|
begin |
| 2429 |
|
|
NewBuffer^.rdCachedUpdateStatus := cusUninserted; |
| 2430 |
|
|
Inc(FDeletedRecords); |
| 2431 |
|
|
end; |
| 2432 |
|
|
cusModified, |
| 2433 |
|
|
cusDeleted: |
| 2434 |
|
|
begin |
| 2435 |
|
|
if (NewBuffer^.rdCachedUpdateStatus = cusDeleted) then |
| 2436 |
|
|
Dec(FDeletedRecords); |
| 2437 |
|
|
CopyRecordBuffer(OldBuffer, NewBuffer); |
| 2438 |
|
|
end; |
| 2439 |
|
|
end; |
| 2440 |
|
|
|
| 2441 |
|
|
if State in dsEditModes then |
| 2442 |
|
|
Cancel; |
| 2443 |
|
|
|
| 2444 |
|
|
WriteRecordCache(RecordNumber, PChar(NewBuffer)); |
| 2445 |
|
|
|
| 2446 |
|
|
if (NewBuffer^.rdCachedUpdateStatus = cusUninserted ) then |
| 2447 |
|
|
ReSync([]); |
| 2448 |
|
|
finally |
| 2449 |
|
|
FreeRecordBuffer(PChar(NewBuffer)); |
| 2450 |
|
|
FreeRecordBuffer(PChar(OldBuffer)); |
| 2451 |
|
|
end; |
| 2452 |
|
|
end; |
| 2453 |
|
|
|
| 2454 |
|
|
{ A visible record is one that is not truly deleted, |
| 2455 |
|
|
and it is also listed in the FUpdateRecordTypes set } |
| 2456 |
|
|
|
| 2457 |
|
|
function TIBCustomDataSet.IsVisible(Buffer: PChar): Boolean; |
| 2458 |
|
|
begin |
| 2459 |
|
|
result := True; |
| 2460 |
|
|
if not (State = dsOldValue) then |
| 2461 |
|
|
result := |
| 2462 |
|
|
(PRecordData(Buffer)^.rdCachedUpdateStatus in FUpdateRecordTypes) and |
| 2463 |
|
|
(not ((PRecordData(Buffer)^.rdCachedUpdateStatus = cusUnmodified) and |
| 2464 |
|
|
(PRecordData(Buffer)^.rdUpdateStatus = usDeleted))); |
| 2465 |
|
|
end; |
| 2466 |
|
|
|
| 2467 |
|
|
|
| 2468 |
|
|
function TIBCustomDataSet.LocateNext(const KeyFields: string; |
| 2469 |
|
|
const KeyValues: Variant; Options: TLocateOptions): Boolean; |
| 2470 |
|
|
begin |
| 2471 |
|
|
DisableControls; |
| 2472 |
|
|
try |
| 2473 |
|
|
result := InternalLocate(KeyFields, KeyValues, Options); |
| 2474 |
|
|
finally |
| 2475 |
|
|
EnableControls; |
| 2476 |
|
|
end; |
| 2477 |
|
|
end; |
| 2478 |
|
|
|
| 2479 |
|
|
procedure TIBCustomDataSet.InternalPrepare; |
| 2480 |
|
|
begin |
| 2481 |
|
|
if FInternalPrepared then |
| 2482 |
|
|
Exit; |
| 2483 |
|
|
FBase.SetCursor; |
| 2484 |
|
|
try |
| 2485 |
|
|
ActivateConnection; |
| 2486 |
tony |
45 |
ActivateTransaction; |
| 2487 |
tony |
33 |
FBase.CheckDatabase; |
| 2488 |
|
|
FBase.CheckTransaction; |
| 2489 |
|
|
if HasParser and (FParser.SQLText <> FQSelect.SQL.Text) then |
| 2490 |
tony |
35 |
begin |
| 2491 |
|
|
FQSelect.OnSQLChanged := nil; {Do not react to change} |
| 2492 |
|
|
try |
| 2493 |
|
|
FQSelect.SQL.Text := FParser.SQLText; |
| 2494 |
|
|
finally |
| 2495 |
|
|
FQSelect.OnSQLChanged := SQLChanged; |
| 2496 |
|
|
end; |
| 2497 |
|
|
end; |
| 2498 |
tony |
33 |
// writeln( FQSelect.SQL.Text); |
| 2499 |
|
|
if FQSelect.SQL.Text <> '' then |
| 2500 |
|
|
begin |
| 2501 |
|
|
if not FQSelect.Prepared then |
| 2502 |
|
|
begin |
| 2503 |
|
|
FQSelect.GenerateParamNames := FGenerateParamNames; |
| 2504 |
|
|
FQSelect.ParamCheck := ParamCheck; |
| 2505 |
|
|
FQSelect.Prepare; |
| 2506 |
|
|
end; |
| 2507 |
|
|
FQDelete.GenerateParamNames := FGenerateParamNames; |
| 2508 |
|
|
if (Trim(FQDelete.SQL.Text) <> '') and (not FQDelete.Prepared) then |
| 2509 |
|
|
FQDelete.Prepare; |
| 2510 |
|
|
FQInsert.GenerateParamNames := FGenerateParamNames; |
| 2511 |
|
|
if (Trim(FQInsert.SQL.Text) <> '') and (not FQInsert.Prepared) then |
| 2512 |
|
|
FQInsert.Prepare; |
| 2513 |
|
|
FQRefresh.GenerateParamNames := FGenerateParamNames; |
| 2514 |
|
|
if (Trim(FQRefresh.SQL.Text) <> '') and (not FQRefresh.Prepared) then |
| 2515 |
|
|
FQRefresh.Prepare; |
| 2516 |
|
|
FQModify.GenerateParamNames := FGenerateParamNames; |
| 2517 |
|
|
if (Trim(FQModify.SQL.Text) <> '') and (not FQModify.Prepared) then |
| 2518 |
|
|
FQModify.Prepare; |
| 2519 |
|
|
FInternalPrepared := True; |
| 2520 |
|
|
InternalInitFieldDefs; |
| 2521 |
|
|
end else |
| 2522 |
|
|
IBError(ibxeEmptyQuery, [nil]); |
| 2523 |
|
|
finally |
| 2524 |
|
|
FBase.RestoreCursor; |
| 2525 |
|
|
end; |
| 2526 |
|
|
end; |
| 2527 |
|
|
|
| 2528 |
|
|
procedure TIBCustomDataSet.RecordModified(Value: Boolean); |
| 2529 |
|
|
begin |
| 2530 |
|
|
SetModified(Value); |
| 2531 |
|
|
end; |
| 2532 |
|
|
|
| 2533 |
|
|
procedure TIBCustomDataSet.RevertRecord; |
| 2534 |
|
|
var |
| 2535 |
|
|
Buff: PRecordData; |
| 2536 |
|
|
begin |
| 2537 |
|
|
if FCachedUpdates and FUpdatesPending then |
| 2538 |
|
|
begin |
| 2539 |
|
|
Buff := PRecordData(GetActiveBuf); |
| 2540 |
|
|
InternalRevertRecord(Buff^.rdRecordNumber); |
| 2541 |
|
|
ReadRecordCache(Buff^.rdRecordNumber, PChar(Buff), False); |
| 2542 |
|
|
DataEvent(deRecordChange, 0); |
| 2543 |
|
|
end; |
| 2544 |
|
|
end; |
| 2545 |
|
|
|
| 2546 |
|
|
procedure TIBCustomDataSet.SaveOldBuffer(Buffer: PChar); |
| 2547 |
|
|
var |
| 2548 |
|
|
OldBuffer: Pointer; |
| 2549 |
|
|
procedure CopyOldBuffer; |
| 2550 |
|
|
begin |
| 2551 |
|
|
CopyRecordBuffer(Buffer, OldBuffer); |
| 2552 |
|
|
if BlobFieldCount > 0 then |
| 2553 |
tony |
45 |
FillChar(PChar(OldBuffer)[FBlobCacheOffset], |
| 2554 |
|
|
BlobFieldCount * SizeOf(TIBBlobStream) + ArrayFieldCount * SizeOf(IArray), |
| 2555 |
tony |
33 |
0); |
| 2556 |
|
|
end; |
| 2557 |
|
|
|
| 2558 |
|
|
begin |
| 2559 |
|
|
if (Buffer <> nil) and (PRecordData(Buffer)^.rdRecordNumber >= 0) then |
| 2560 |
|
|
begin |
| 2561 |
|
|
OldBuffer := AllocRecordBuffer; |
| 2562 |
|
|
try |
| 2563 |
|
|
if (PRecordData(Buffer)^.rdSavedOffset = $FFFFFFFF) then |
| 2564 |
|
|
begin |
| 2565 |
|
|
PRecordData(Buffer)^.rdSavedOffset := AdjustPosition(FOldBufferCache, 0, |
| 2566 |
|
|
FILE_END); |
| 2567 |
|
|
CopyOldBuffer; |
| 2568 |
|
|
WriteCache(FOldBufferCache, 0, FILE_CURRENT, OldBuffer); |
| 2569 |
|
|
WriteCache(FBufferCache, PRecordData(Buffer)^.rdRecordNumber * FRecordBufferSize, |
| 2570 |
|
|
FILE_BEGIN, Buffer); |
| 2571 |
|
|
end |
| 2572 |
|
|
else begin |
| 2573 |
|
|
CopyOldBuffer; |
| 2574 |
|
|
WriteCache(FOldBufferCache, PRecordData(Buffer)^.rdSavedOffset, FILE_BEGIN, |
| 2575 |
|
|
OldBuffer); |
| 2576 |
|
|
end; |
| 2577 |
|
|
finally |
| 2578 |
|
|
FreeRecordBuffer(PChar(OldBuffer)); |
| 2579 |
|
|
end; |
| 2580 |
|
|
end; |
| 2581 |
|
|
end; |
| 2582 |
|
|
|
| 2583 |
|
|
procedure TIBCustomDataSet.SetBufferChunks(Value: Integer); |
| 2584 |
|
|
begin |
| 2585 |
|
|
if (Value <= 0) then |
| 2586 |
|
|
FBufferChunks := BufferCacheSize |
| 2587 |
|
|
else |
| 2588 |
|
|
FBufferChunks := Value; |
| 2589 |
|
|
end; |
| 2590 |
|
|
|
| 2591 |
|
|
procedure TIBCustomDataSet.SetDatabase(Value: TIBDatabase); |
| 2592 |
|
|
begin |
| 2593 |
|
|
if (FBase.Database <> Value) then |
| 2594 |
|
|
begin |
| 2595 |
|
|
CheckDatasetClosed; |
| 2596 |
|
|
FBase.Database := Value; |
| 2597 |
|
|
FQDelete.Database := Value; |
| 2598 |
|
|
FQInsert.Database := Value; |
| 2599 |
|
|
FQRefresh.Database := Value; |
| 2600 |
|
|
FQSelect.Database := Value; |
| 2601 |
|
|
FQModify.Database := Value; |
| 2602 |
|
|
end; |
| 2603 |
|
|
end; |
| 2604 |
|
|
|
| 2605 |
|
|
procedure TIBCustomDataSet.SetDeleteSQL(Value: TStrings); |
| 2606 |
|
|
begin |
| 2607 |
|
|
if FQDelete.SQL.Text <> Value.Text then |
| 2608 |
|
|
begin |
| 2609 |
|
|
Disconnect; |
| 2610 |
|
|
FQDelete.SQL.Assign(Value); |
| 2611 |
|
|
end; |
| 2612 |
|
|
end; |
| 2613 |
|
|
|
| 2614 |
|
|
procedure TIBCustomDataSet.SetInsertSQL(Value: TStrings); |
| 2615 |
|
|
begin |
| 2616 |
|
|
if FQInsert.SQL.Text <> Value.Text then |
| 2617 |
|
|
begin |
| 2618 |
|
|
Disconnect; |
| 2619 |
|
|
FQInsert.SQL.Assign(Value); |
| 2620 |
|
|
end; |
| 2621 |
|
|
end; |
| 2622 |
|
|
|
| 2623 |
|
|
procedure TIBCustomDataSet.SetInternalSQLParams(Qry: TIBSQL; Buffer: Pointer); |
| 2624 |
|
|
var |
| 2625 |
|
|
i, j: Integer; |
| 2626 |
|
|
cr, data: PChar; |
| 2627 |
tony |
43 |
fn: string; |
| 2628 |
|
|
st: RawByteString; |
| 2629 |
tony |
33 |
OldBuffer: Pointer; |
| 2630 |
|
|
ts: TTimeStamp; |
| 2631 |
tony |
45 |
Param: ISQLParam; |
| 2632 |
tony |
33 |
begin |
| 2633 |
|
|
if (Buffer = nil) then |
| 2634 |
|
|
IBError(ibxeBufferNotSet, [nil]); |
| 2635 |
|
|
if (not FInternalPrepared) then |
| 2636 |
|
|
InternalPrepare; |
| 2637 |
|
|
OldBuffer := nil; |
| 2638 |
|
|
try |
| 2639 |
tony |
45 |
for i := 0 to Qry.Params.GetCount - 1 do |
| 2640 |
tony |
33 |
begin |
| 2641 |
tony |
45 |
Param := Qry.Params[i]; |
| 2642 |
|
|
fn := Param.Name; |
| 2643 |
tony |
33 |
if (Pos('OLD_', fn) = 1) then {mbcs ok} |
| 2644 |
|
|
begin |
| 2645 |
|
|
fn := Copy(fn, 5, Length(fn)); |
| 2646 |
|
|
if not Assigned(OldBuffer) then |
| 2647 |
|
|
begin |
| 2648 |
|
|
OldBuffer := AllocRecordBuffer; |
| 2649 |
|
|
ReadRecordCache(PRecordData(Buffer)^.rdRecordNumber, OldBuffer, True); |
| 2650 |
|
|
end; |
| 2651 |
|
|
cr := OldBuffer; |
| 2652 |
|
|
end |
| 2653 |
|
|
else if (Pos('NEW_', fn) = 1) then {mbcs ok} |
| 2654 |
|
|
begin |
| 2655 |
|
|
fn := Copy(fn, 5, Length(fn)); |
| 2656 |
|
|
cr := Buffer; |
| 2657 |
|
|
end |
| 2658 |
|
|
else |
| 2659 |
|
|
cr := Buffer; |
| 2660 |
|
|
j := FQSelect.FieldIndex[fn] + 1; |
| 2661 |
|
|
if (j > 0) then |
| 2662 |
tony |
45 |
with PRecordData(cr)^,rdFields[j], FFieldColumns^[j] do |
| 2663 |
tony |
33 |
begin |
| 2664 |
tony |
45 |
if Param.name = 'IBX_INTERNAL_DBKEY' then {do not localize} |
| 2665 |
tony |
33 |
begin |
| 2666 |
tony |
45 |
PIBDBKey(Param.AsPointer)^ := rdDBKey; |
| 2667 |
tony |
33 |
continue; |
| 2668 |
|
|
end; |
| 2669 |
tony |
45 |
if fdIsNull then |
| 2670 |
|
|
Param.IsNull := True |
| 2671 |
tony |
33 |
else begin |
| 2672 |
tony |
45 |
Param.IsNull := False; |
| 2673 |
|
|
data := cr + fdDataOfs; |
| 2674 |
|
|
case fdDataType of |
| 2675 |
tony |
33 |
SQL_TEXT, SQL_VARYING: |
| 2676 |
|
|
begin |
| 2677 |
tony |
45 |
SetString(st, data, fdDataLength); |
| 2678 |
|
|
SetCodePage(st,fdCodePage,false); |
| 2679 |
|
|
Param.AsString := st; |
| 2680 |
tony |
33 |
end; |
| 2681 |
|
|
SQL_FLOAT, SQL_DOUBLE, SQL_D_FLOAT: |
| 2682 |
tony |
45 |
Param.AsDouble := PDouble(data)^; |
| 2683 |
tony |
33 |
SQL_SHORT, SQL_LONG: |
| 2684 |
|
|
begin |
| 2685 |
tony |
45 |
if fdDataScale = 0 then |
| 2686 |
|
|
Param.AsLong := PLong(data)^ |
| 2687 |
tony |
33 |
else |
| 2688 |
tony |
45 |
if fdDataScale >= (-4) then |
| 2689 |
|
|
Param.AsCurrency := PCurrency(data)^ |
| 2690 |
|
|
else |
| 2691 |
|
|
Param.AsDouble := PDouble(data)^; |
| 2692 |
tony |
33 |
end; |
| 2693 |
|
|
SQL_INT64: |
| 2694 |
|
|
begin |
| 2695 |
tony |
45 |
if fdDataScale = 0 then |
| 2696 |
|
|
Param.AsInt64 := PInt64(data)^ |
| 2697 |
tony |
33 |
else |
| 2698 |
tony |
45 |
if fdDataScale >= (-4) then |
| 2699 |
|
|
Param.AsCurrency := PCurrency(data)^ |
| 2700 |
|
|
else |
| 2701 |
|
|
Param.AsDouble := PDouble(data)^; |
| 2702 |
tony |
33 |
end; |
| 2703 |
|
|
SQL_BLOB, SQL_ARRAY, SQL_QUAD: |
| 2704 |
tony |
45 |
Param.AsQuad := PISC_QUAD(data)^; |
| 2705 |
tony |
33 |
SQL_TYPE_DATE: |
| 2706 |
|
|
begin |
| 2707 |
|
|
ts.Date := PInt(data)^; |
| 2708 |
|
|
ts.Time := 0; |
| 2709 |
tony |
45 |
Param.AsDate := TimeStampToDateTime(ts); |
| 2710 |
tony |
33 |
end; |
| 2711 |
|
|
SQL_TYPE_TIME: |
| 2712 |
|
|
begin |
| 2713 |
|
|
ts.Date := 0; |
| 2714 |
|
|
ts.Time := PInt(data)^; |
| 2715 |
tony |
45 |
Param.AsTime := TimeStampToDateTime(ts); |
| 2716 |
tony |
33 |
end; |
| 2717 |
|
|
SQL_TIMESTAMP: |
| 2718 |
tony |
45 |
Param.AsDateTime := |
| 2719 |
tony |
33 |
TimeStampToDateTime(MSecsToTimeStamp(trunc(PDouble(data)^))); |
| 2720 |
|
|
SQL_BOOLEAN: |
| 2721 |
tony |
45 |
Param.AsBoolean := PWordBool(data)^; |
| 2722 |
tony |
33 |
end; |
| 2723 |
|
|
end; |
| 2724 |
|
|
end; |
| 2725 |
|
|
end; |
| 2726 |
|
|
finally |
| 2727 |
|
|
if (OldBuffer <> nil) then |
| 2728 |
|
|
FreeRecordBuffer(PChar(OldBuffer)); |
| 2729 |
|
|
end; |
| 2730 |
|
|
end; |
| 2731 |
|
|
|
| 2732 |
|
|
procedure TIBCustomDataSet.SetRefreshSQL(Value: TStrings); |
| 2733 |
|
|
begin |
| 2734 |
|
|
if FQRefresh.SQL.Text <> Value.Text then |
| 2735 |
|
|
begin |
| 2736 |
|
|
Disconnect; |
| 2737 |
|
|
FQRefresh.SQL.Assign(Value); |
| 2738 |
|
|
end; |
| 2739 |
|
|
end; |
| 2740 |
|
|
|
| 2741 |
|
|
procedure TIBCustomDataSet.SetSelectSQL(Value: TStrings); |
| 2742 |
|
|
begin |
| 2743 |
|
|
if FQSelect.SQL.Text <> Value.Text then |
| 2744 |
|
|
begin |
| 2745 |
|
|
Disconnect; |
| 2746 |
|
|
FQSelect.SQL.Assign(Value); |
| 2747 |
|
|
end; |
| 2748 |
|
|
end; |
| 2749 |
|
|
|
| 2750 |
|
|
procedure TIBCustomDataSet.SetModifySQL(Value: TStrings); |
| 2751 |
|
|
begin |
| 2752 |
|
|
if FQModify.SQL.Text <> Value.Text then |
| 2753 |
|
|
begin |
| 2754 |
|
|
Disconnect; |
| 2755 |
|
|
FQModify.SQL.Assign(Value); |
| 2756 |
|
|
end; |
| 2757 |
|
|
end; |
| 2758 |
|
|
|
| 2759 |
|
|
procedure TIBCustomDataSet.SetTransaction(Value: TIBTransaction); |
| 2760 |
|
|
begin |
| 2761 |
|
|
if (FBase.Transaction <> Value) then |
| 2762 |
|
|
begin |
| 2763 |
|
|
CheckDatasetClosed; |
| 2764 |
|
|
FBase.Transaction := Value; |
| 2765 |
|
|
FQDelete.Transaction := Value; |
| 2766 |
|
|
FQInsert.Transaction := Value; |
| 2767 |
|
|
FQRefresh.Transaction := Value; |
| 2768 |
|
|
FQSelect.Transaction := Value; |
| 2769 |
|
|
FQModify.Transaction := Value; |
| 2770 |
|
|
end; |
| 2771 |
|
|
end; |
| 2772 |
|
|
|
| 2773 |
|
|
procedure TIBCustomDataSet.SetUniDirectional(Value: Boolean); |
| 2774 |
|
|
begin |
| 2775 |
|
|
CheckDatasetClosed; |
| 2776 |
|
|
FUniDirectional := Value; |
| 2777 |
|
|
end; |
| 2778 |
|
|
|
| 2779 |
|
|
procedure TIBCustomDataSet.SetUpdateRecordTypes(Value: TIBUpdateRecordTypes); |
| 2780 |
|
|
begin |
| 2781 |
|
|
FUpdateRecordTypes := Value; |
| 2782 |
|
|
if Active then |
| 2783 |
|
|
First; |
| 2784 |
|
|
end; |
| 2785 |
|
|
|
| 2786 |
|
|
procedure TIBCustomDataSet.RefreshParams; |
| 2787 |
|
|
var |
| 2788 |
|
|
DataSet: TDataSet; |
| 2789 |
|
|
begin |
| 2790 |
|
|
DisableControls; |
| 2791 |
|
|
try |
| 2792 |
|
|
if FDataLink.DataSource <> nil then |
| 2793 |
|
|
begin |
| 2794 |
|
|
DataSet := FDataLink.DataSource.DataSet; |
| 2795 |
|
|
if DataSet <> nil then |
| 2796 |
|
|
if DataSet.Active and (DataSet.State <> dsSetKey) then |
| 2797 |
|
|
begin |
| 2798 |
|
|
Close; |
| 2799 |
|
|
Open; |
| 2800 |
|
|
end; |
| 2801 |
|
|
end; |
| 2802 |
|
|
finally |
| 2803 |
|
|
EnableControls; |
| 2804 |
|
|
end; |
| 2805 |
|
|
end; |
| 2806 |
|
|
|
| 2807 |
|
|
procedure TIBCustomDataSet.RegisterIBLink(Sender: TIBControlLink); |
| 2808 |
|
|
begin |
| 2809 |
|
|
if FIBLinks.IndexOf(Sender) = -1 then |
| 2810 |
|
|
FIBLinks.Add(Sender); |
| 2811 |
|
|
end; |
| 2812 |
|
|
|
| 2813 |
|
|
|
| 2814 |
|
|
procedure TIBCustomDataSet.SQLChanging(Sender: TObject); |
| 2815 |
|
|
begin |
| 2816 |
|
|
Active := false; |
| 2817 |
|
|
{ if FOpen then |
| 2818 |
|
|
InternalClose;} |
| 2819 |
|
|
if FInternalPrepared then |
| 2820 |
|
|
InternalUnPrepare; |
| 2821 |
|
|
FieldDefs.Clear; |
| 2822 |
|
|
FieldDefs.Updated := false; |
| 2823 |
|
|
end; |
| 2824 |
|
|
|
| 2825 |
tony |
35 |
procedure TIBCustomDataSet.SQLChanged(Sender: TObject); |
| 2826 |
|
|
begin |
| 2827 |
|
|
FBaseSQLSelect.assign(FQSelect.SQL); |
| 2828 |
|
|
end; |
| 2829 |
|
|
|
| 2830 |
tony |
33 |
{ I can "undelete" uninserted records (make them "inserted" again). |
| 2831 |
|
|
I can "undelete" cached deleted (the deletion hasn't yet occurred) } |
| 2832 |
|
|
procedure TIBCustomDataSet.Undelete; |
| 2833 |
|
|
var |
| 2834 |
|
|
Buff: PRecordData; |
| 2835 |
|
|
begin |
| 2836 |
|
|
CheckActive; |
| 2837 |
|
|
Buff := PRecordData(GetActiveBuf); |
| 2838 |
|
|
with Buff^ do |
| 2839 |
|
|
begin |
| 2840 |
|
|
if rdCachedUpdateStatus = cusUninserted then |
| 2841 |
|
|
begin |
| 2842 |
|
|
rdCachedUpdateStatus := cusInserted; |
| 2843 |
|
|
Dec(FDeletedRecords); |
| 2844 |
|
|
end |
| 2845 |
|
|
else if (rdUpdateStatus = usDeleted) and |
| 2846 |
|
|
(rdCachedUpdateStatus = cusDeleted) then |
| 2847 |
|
|
begin |
| 2848 |
|
|
rdCachedUpdateStatus := cusUnmodified; |
| 2849 |
|
|
rdUpdateStatus := usUnmodified; |
| 2850 |
|
|
Dec(FDeletedRecords); |
| 2851 |
|
|
end; |
| 2852 |
|
|
WriteRecordCache(rdRecordNumber, PChar(Buff)); |
| 2853 |
|
|
end; |
| 2854 |
|
|
end; |
| 2855 |
|
|
|
| 2856 |
|
|
procedure TIBCustomDataSet.UnRegisterIBLink(Sender: TIBControlLink); |
| 2857 |
|
|
begin |
| 2858 |
|
|
FIBLinks.Remove(Sender); |
| 2859 |
|
|
end; |
| 2860 |
|
|
|
| 2861 |
|
|
function TIBCustomDataSet.UpdateStatus: TUpdateStatus; |
| 2862 |
|
|
begin |
| 2863 |
|
|
if Active then |
| 2864 |
|
|
if GetActiveBuf <> nil then |
| 2865 |
|
|
result := PRecordData(GetActiveBuf)^.rdUpdateStatus |
| 2866 |
|
|
else |
| 2867 |
|
|
result := usUnmodified |
| 2868 |
|
|
else |
| 2869 |
|
|
result := usUnmodified; |
| 2870 |
|
|
end; |
| 2871 |
|
|
|
| 2872 |
|
|
function TIBCustomDataSet.IsSequenced: Boolean; |
| 2873 |
|
|
begin |
| 2874 |
|
|
Result := Assigned( FQSelect ) and FQSelect.EOF; |
| 2875 |
|
|
end; |
| 2876 |
|
|
|
| 2877 |
tony |
45 |
function TIBCustomDataSet.ParamByName(ParamName: String): ISQLParam; |
| 2878 |
tony |
33 |
begin |
| 2879 |
|
|
ActivateConnection; |
| 2880 |
|
|
ActivateTransaction; |
| 2881 |
|
|
if not FInternalPrepared then |
| 2882 |
|
|
InternalPrepare; |
| 2883 |
|
|
Result := Params.ByName(ParamName); |
| 2884 |
|
|
end; |
| 2885 |
|
|
|
| 2886 |
|
|
{Beware: the parameter FCache is used as an identifier to determine which |
| 2887 |
|
|
cache is being operated on and is not referenced in the computation. |
| 2888 |
|
|
The result is an adjusted offset into the identified cache, either the |
| 2889 |
|
|
Buffer Cache or the old Buffer Cache.} |
| 2890 |
|
|
|
| 2891 |
|
|
function TIBCustomDataSet.AdjustPosition(FCache: PChar; Offset: DWORD; |
| 2892 |
|
|
Origin: Integer): DWORD; |
| 2893 |
|
|
var |
| 2894 |
|
|
OldCacheSize: Integer; |
| 2895 |
|
|
begin |
| 2896 |
|
|
if (FCache = FBufferCache) then |
| 2897 |
|
|
begin |
| 2898 |
|
|
case Origin of |
| 2899 |
|
|
FILE_BEGIN: FBPos := Offset; |
| 2900 |
|
|
FILE_CURRENT: FBPos := FBPos + Offset; |
| 2901 |
|
|
FILE_END: FBPos := DWORD(FBEnd) + Offset; |
| 2902 |
|
|
end; |
| 2903 |
|
|
OldCacheSize := FCacheSize; |
| 2904 |
|
|
while (FBPos >= DWORD(FCacheSize)) do |
| 2905 |
|
|
Inc(FCacheSize, FBufferChunkSize); |
| 2906 |
|
|
if FCacheSize > OldCacheSize then |
| 2907 |
|
|
IBAlloc(FBufferCache, FCacheSize, FCacheSize); |
| 2908 |
|
|
result := FBPos; |
| 2909 |
|
|
end |
| 2910 |
|
|
else begin |
| 2911 |
|
|
case Origin of |
| 2912 |
|
|
FILE_BEGIN: FOBPos := Offset; |
| 2913 |
|
|
FILE_CURRENT: FOBPos := FOBPos + Offset; |
| 2914 |
|
|
FILE_END: FOBPos := DWORD(FOBEnd) + Offset; |
| 2915 |
|
|
end; |
| 2916 |
|
|
OldCacheSize := FOldCacheSize; |
| 2917 |
|
|
while (FBPos >= DWORD(FOldCacheSize)) do |
| 2918 |
|
|
Inc(FOldCacheSize, FBufferChunkSize); |
| 2919 |
|
|
if FOldCacheSize > OldCacheSize then |
| 2920 |
|
|
IBAlloc(FOldBufferCache, FOldCacheSize, FOldCacheSize); |
| 2921 |
|
|
result := FOBPos; |
| 2922 |
|
|
end; |
| 2923 |
|
|
end; |
| 2924 |
|
|
|
| 2925 |
|
|
procedure TIBCustomDataSet.ReadCache(FCache: PChar; Offset: DWORD; Origin: Integer; |
| 2926 |
|
|
Buffer: PChar); |
| 2927 |
|
|
var |
| 2928 |
|
|
pCache: PChar; |
| 2929 |
|
|
AdjustedOffset: DWORD; |
| 2930 |
|
|
bOld: Boolean; |
| 2931 |
|
|
begin |
| 2932 |
|
|
bOld := (FCache = FOldBufferCache); |
| 2933 |
|
|
AdjustedOffset := AdjustPosition(FCache, Offset, Origin); |
| 2934 |
|
|
if not bOld then |
| 2935 |
|
|
pCache := FBufferCache + AdjustedOffset |
| 2936 |
|
|
else |
| 2937 |
|
|
pCache := FOldBufferCache + AdjustedOffset; |
| 2938 |
|
|
Move(pCache^, Buffer^, DWORD(FRecordBufferSize)); |
| 2939 |
|
|
AdjustPosition(FCache, FRecordBufferSize, FILE_CURRENT); |
| 2940 |
|
|
end; |
| 2941 |
|
|
|
| 2942 |
|
|
procedure TIBCustomDataSet.ReadRecordCache(RecordNumber: Integer; Buffer: PChar; |
| 2943 |
|
|
ReadOldBuffer: Boolean); |
| 2944 |
|
|
begin |
| 2945 |
|
|
if FUniDirectional then |
| 2946 |
|
|
RecordNumber := RecordNumber mod UniCache; |
| 2947 |
|
|
if (ReadOldBuffer) then |
| 2948 |
|
|
begin |
| 2949 |
|
|
ReadRecordCache(RecordNumber, Buffer, False); |
| 2950 |
|
|
if FCachedUpdates and |
| 2951 |
|
|
(PRecordData(Buffer)^.rdSavedOffset <> $FFFFFFFF) then |
| 2952 |
|
|
ReadCache(FOldBufferCache, PRecordData(Buffer)^.rdSavedOffset, FILE_BEGIN, |
| 2953 |
|
|
Buffer) |
| 2954 |
|
|
else |
| 2955 |
|
|
if ReadOldBuffer and |
| 2956 |
|
|
(PRecordData(FOldBuffer)^.rdRecordNumber = RecordNumber) then |
| 2957 |
|
|
CopyRecordBuffer( FOldBuffer, Buffer ) |
| 2958 |
|
|
end |
| 2959 |
|
|
else |
| 2960 |
|
|
ReadCache(FBufferCache, RecordNumber * FRecordBufferSize, FILE_BEGIN, Buffer); |
| 2961 |
|
|
end; |
| 2962 |
|
|
|
| 2963 |
|
|
procedure TIBCustomDataSet.WriteCache(FCache: PChar; Offset: DWORD; Origin: Integer; |
| 2964 |
|
|
Buffer: PChar); |
| 2965 |
|
|
var |
| 2966 |
|
|
pCache: PChar; |
| 2967 |
|
|
AdjustedOffset: DWORD; |
| 2968 |
|
|
bOld: Boolean; |
| 2969 |
|
|
dwEnd: DWORD; |
| 2970 |
|
|
begin |
| 2971 |
|
|
bOld := (FCache = FOldBufferCache); |
| 2972 |
|
|
AdjustedOffset := AdjustPosition(FCache, Offset, Origin); |
| 2973 |
|
|
if not bOld then |
| 2974 |
|
|
pCache := FBufferCache + AdjustedOffset |
| 2975 |
|
|
else |
| 2976 |
|
|
pCache := FOldBufferCache + AdjustedOffset; |
| 2977 |
|
|
Move(Buffer^, pCache^, FRecordBufferSize); |
| 2978 |
|
|
dwEnd := AdjustPosition(FCache, FRecordBufferSize, FILE_CURRENT); |
| 2979 |
|
|
if not bOld then |
| 2980 |
|
|
begin |
| 2981 |
|
|
if (dwEnd > FBEnd) then |
| 2982 |
|
|
FBEnd := dwEnd; |
| 2983 |
|
|
end |
| 2984 |
|
|
else begin |
| 2985 |
|
|
if (dwEnd > FOBEnd) then |
| 2986 |
|
|
FOBEnd := dwEnd; |
| 2987 |
|
|
end; |
| 2988 |
|
|
end; |
| 2989 |
|
|
|
| 2990 |
|
|
procedure TIBCustomDataSet.WriteRecordCache(RecordNumber: Integer; Buffer: PChar); |
| 2991 |
|
|
begin |
| 2992 |
|
|
if RecordNumber >= 0 then |
| 2993 |
|
|
begin |
| 2994 |
|
|
if FUniDirectional then |
| 2995 |
|
|
RecordNumber := RecordNumber mod UniCache; |
| 2996 |
|
|
WriteCache(FBufferCache, RecordNumber * FRecordBufferSize, FILE_BEGIN, Buffer); |
| 2997 |
|
|
end; |
| 2998 |
|
|
end; |
| 2999 |
|
|
|
| 3000 |
|
|
function TIBCustomDataSet.AllocRecordBuffer: PChar; |
| 3001 |
|
|
begin |
| 3002 |
|
|
result := nil; |
| 3003 |
|
|
IBAlloc(result, FRecordBufferSize, FRecordBufferSize); |
| 3004 |
|
|
Move(FModelBuffer^, result^, FRecordBufferSize); |
| 3005 |
|
|
end; |
| 3006 |
|
|
|
| 3007 |
|
|
function TIBCustomDataSet.CreateBlobStream(Field: TField; Mode: TBlobStreamMode): TStream; |
| 3008 |
|
|
var |
| 3009 |
|
|
pb: PBlobDataArray; |
| 3010 |
|
|
fs: TIBBlobStream; |
| 3011 |
|
|
Buff: PChar; |
| 3012 |
|
|
bTr, bDB: Boolean; |
| 3013 |
|
|
begin |
| 3014 |
tony |
45 |
if (Field = nil) or (Field.DataSet <> self) then |
| 3015 |
|
|
IBError(ibxFieldNotinDataSet,[Field.Name,Name]); |
| 3016 |
tony |
33 |
Buff := GetActiveBuf; |
| 3017 |
|
|
if Buff = nil then |
| 3018 |
|
|
begin |
| 3019 |
|
|
fs := TIBBlobStream.Create; |
| 3020 |
|
|
fs.Mode := bmReadWrite; |
| 3021 |
tony |
45 |
fs.Database := Database; |
| 3022 |
|
|
fs.Transaction := Transaction; |
| 3023 |
|
|
fs.SetField(Field); |
| 3024 |
tony |
33 |
FBlobStreamList.Add(Pointer(fs)); |
| 3025 |
|
|
result := TIBDSBlobStream.Create(Field, fs, Mode); |
| 3026 |
|
|
exit; |
| 3027 |
|
|
end; |
| 3028 |
|
|
pb := PBlobDataArray(Buff + FBlobCacheOffset); |
| 3029 |
|
|
if pb^[Field.Offset] = nil then |
| 3030 |
|
|
begin |
| 3031 |
|
|
AdjustRecordOnInsert(Buff); |
| 3032 |
|
|
pb^[Field.Offset] := TIBBlobStream.Create; |
| 3033 |
|
|
fs := pb^[Field.Offset]; |
| 3034 |
|
|
FBlobStreamList.Add(Pointer(fs)); |
| 3035 |
|
|
fs.Mode := bmReadWrite; |
| 3036 |
|
|
fs.Database := Database; |
| 3037 |
|
|
fs.Transaction := Transaction; |
| 3038 |
tony |
45 |
fs.SetField(Field); |
| 3039 |
tony |
33 |
fs.BlobID := |
| 3040 |
tony |
45 |
PISC_QUAD(@Buff[FFieldColumns^[FMappedFieldPosition[Field.FieldNo - 1]].fdDataOfs])^; |
| 3041 |
tony |
33 |
if (CachedUpdates) then |
| 3042 |
|
|
begin |
| 3043 |
|
|
bTr := not Transaction.InTransaction; |
| 3044 |
|
|
bDB := not Database.Connected; |
| 3045 |
|
|
if bDB then |
| 3046 |
|
|
Database.Open; |
| 3047 |
|
|
if bTr then |
| 3048 |
|
|
Transaction.StartTransaction; |
| 3049 |
|
|
fs.Seek(0, soFromBeginning); |
| 3050 |
|
|
if bTr then |
| 3051 |
|
|
Transaction.Commit; |
| 3052 |
|
|
if bDB then |
| 3053 |
|
|
Database.Close; |
| 3054 |
|
|
end; |
| 3055 |
|
|
WriteRecordCache(PRecordData(Buff)^.rdRecordNumber, Pointer(Buff)); |
| 3056 |
|
|
end else |
| 3057 |
|
|
fs := pb^[Field.Offset]; |
| 3058 |
|
|
result := TIBDSBlobStream.Create(Field, fs, Mode); |
| 3059 |
|
|
end; |
| 3060 |
|
|
|
| 3061 |
tony |
45 |
function TIBCustomDataSet.GetArray(Field: TIBArrayField): IArray; |
| 3062 |
|
|
var Buff: PChar; |
| 3063 |
|
|
pda: PArrayDataArray; |
| 3064 |
|
|
bTr, bDB: Boolean; |
| 3065 |
|
|
begin |
| 3066 |
|
|
if (Field = nil) or (Field.DataSet <> self) then |
| 3067 |
|
|
IBError(ibxFieldNotinDataSet,[Field.Name,Name]); |
| 3068 |
|
|
Buff := GetActiveBuf; |
| 3069 |
|
|
if Buff = nil then |
| 3070 |
|
|
Result := Database.Attachment.CreateArray(Transaction.TransactionIntf, |
| 3071 |
|
|
Field.FRelationName,Field.FieldName) |
| 3072 |
|
|
else |
| 3073 |
|
|
begin |
| 3074 |
|
|
pda := PArrayDataArray(Buff + FArrayCacheOffset); |
| 3075 |
|
|
if pda^[Field.FCacheOffset] = nil then |
| 3076 |
|
|
begin |
| 3077 |
|
|
AdjustRecordOnInsert(Buff); |
| 3078 |
|
|
if Field.IsNull then |
| 3079 |
|
|
Result := Database.Attachment.CreateArray(Transaction.TransactionIntf, |
| 3080 |
|
|
Field.FRelationName,Field.FieldName) |
| 3081 |
|
|
else |
| 3082 |
|
|
Result := Database.Attachment.OpenArray(Transaction.TransactionIntf, |
| 3083 |
|
|
Field.FRelationName,Field.FieldName,Field.ArrayID); |
| 3084 |
|
|
pda^[Field.FCacheOffset] := TIBArray.Create(Field,Result); |
| 3085 |
|
|
FArrayList.Add(pda^[Field.FCacheOffset]); |
| 3086 |
|
|
if (CachedUpdates) then |
| 3087 |
|
|
begin |
| 3088 |
|
|
bTr := not Transaction.InTransaction; |
| 3089 |
|
|
bDB := not Database.Connected; |
| 3090 |
|
|
if bDB then |
| 3091 |
|
|
Database.Open; |
| 3092 |
|
|
if bTr then |
| 3093 |
|
|
Transaction.StartTransaction; |
| 3094 |
|
|
pda^[Field.FCacheOffset].ArrayIntf.PreLoad; |
| 3095 |
|
|
if bTr then |
| 3096 |
|
|
Transaction.Commit; |
| 3097 |
|
|
if bDB then |
| 3098 |
|
|
Database.Close; |
| 3099 |
|
|
end; |
| 3100 |
|
|
WriteRecordCache(PRecordData(Buff)^.rdRecordNumber, Pointer(Buff)); |
| 3101 |
|
|
end |
| 3102 |
|
|
else |
| 3103 |
|
|
Result := pda^[Field.FCacheOffset].ArrayIntf; |
| 3104 |
|
|
end; |
| 3105 |
|
|
end; |
| 3106 |
|
|
|
| 3107 |
|
|
procedure TIBCustomDataSet.SetArrayIntf(AnArray: IArray; Field: TIBArrayField); |
| 3108 |
|
|
var Buff: PChar; |
| 3109 |
|
|
pda: PArrayDataArray; |
| 3110 |
|
|
begin |
| 3111 |
|
|
if (Field = nil) or (Field.DataSet <> self) then |
| 3112 |
|
|
IBError(ibxFieldNotinDataSet,[Field.Name,Name]); |
| 3113 |
|
|
Buff := GetActiveBuf; |
| 3114 |
|
|
if Buff <> nil then |
| 3115 |
|
|
begin |
| 3116 |
|
|
AdjustRecordOnInsert(Buff); |
| 3117 |
|
|
pda := PArrayDataArray(Buff + FArrayCacheOffset); |
| 3118 |
|
|
pda^[Field.FCacheOffset].FArray := AnArray; |
| 3119 |
|
|
WriteRecordCache(PRecordData(Buff)^.rdRecordNumber, Pointer(Buff)); |
| 3120 |
|
|
end; |
| 3121 |
|
|
end; |
| 3122 |
|
|
|
| 3123 |
tony |
33 |
function TIBCustomDataSet.CompareBookmarks(Bookmark1, Bookmark2: TBookmark): Integer; |
| 3124 |
|
|
const |
| 3125 |
|
|
CMPLess = -1; |
| 3126 |
|
|
CMPEql = 0; |
| 3127 |
|
|
CMPGtr = 1; |
| 3128 |
|
|
RetCodes: array[Boolean, Boolean] of ShortInt = ((2, CMPLess), |
| 3129 |
|
|
(CMPGtr, CMPEql)); |
| 3130 |
|
|
begin |
| 3131 |
|
|
result := RetCodes[Bookmark1 = nil, Bookmark2 = nil]; |
| 3132 |
|
|
|
| 3133 |
|
|
if Result = 2 then |
| 3134 |
|
|
begin |
| 3135 |
|
|
if PInteger(Bookmark1)^ < PInteger(Bookmark2)^ then |
| 3136 |
|
|
Result := CMPLess |
| 3137 |
|
|
else |
| 3138 |
|
|
if PInteger(Bookmark1)^ > PInteger(Bookmark2)^ then |
| 3139 |
|
|
Result := CMPGtr |
| 3140 |
|
|
else |
| 3141 |
|
|
Result := CMPEql; |
| 3142 |
|
|
end; |
| 3143 |
|
|
end; |
| 3144 |
|
|
|
| 3145 |
|
|
procedure TIBCustomDataSet.DoBeforeDelete; |
| 3146 |
|
|
var |
| 3147 |
|
|
Buff: PRecordData; |
| 3148 |
|
|
begin |
| 3149 |
|
|
if not CanDelete then |
| 3150 |
|
|
IBError(ibxeCannotDelete, [nil]); |
| 3151 |
|
|
Buff := PRecordData(GetActiveBuf); |
| 3152 |
|
|
if FCachedUpdates and |
| 3153 |
|
|
(Buff^.rdCachedUpdateStatus in [cusUnmodified]) then |
| 3154 |
|
|
SaveOldBuffer(PChar(Buff)); |
| 3155 |
|
|
inherited DoBeforeDelete; |
| 3156 |
|
|
end; |
| 3157 |
|
|
|
| 3158 |
|
|
procedure TIBCustomDataSet.DoAfterDelete; |
| 3159 |
|
|
begin |
| 3160 |
|
|
inherited DoAfterDelete; |
| 3161 |
|
|
FBase.DoAfterDelete(self); |
| 3162 |
|
|
InternalAutoCommit; |
| 3163 |
|
|
end; |
| 3164 |
|
|
|
| 3165 |
|
|
procedure TIBCustomDataSet.DoBeforeEdit; |
| 3166 |
|
|
var |
| 3167 |
|
|
Buff: PRecordData; |
| 3168 |
|
|
begin |
| 3169 |
|
|
Buff := PRecordData(GetActiveBuf); |
| 3170 |
|
|
if not(CanEdit or (FQModify.SQL.Count <> 0) or |
| 3171 |
|
|
(FCachedUpdates and Assigned(FOnUpdateRecord))) then |
| 3172 |
|
|
IBError(ibxeCannotUpdate, [nil]); |
| 3173 |
|
|
if FCachedUpdates and (Buff^.rdCachedUpdateStatus in [cusUnmodified, cusInserted]) then |
| 3174 |
|
|
SaveOldBuffer(PChar(Buff)); |
| 3175 |
|
|
CopyRecordBuffer(GetActiveBuf, FOldBuffer); |
| 3176 |
|
|
inherited DoBeforeEdit; |
| 3177 |
|
|
end; |
| 3178 |
|
|
|
| 3179 |
|
|
procedure TIBCustomDataSet.DoAfterEdit; |
| 3180 |
|
|
begin |
| 3181 |
|
|
inherited DoAfterEdit; |
| 3182 |
|
|
FBase.DoAfterEdit(self); |
| 3183 |
|
|
end; |
| 3184 |
|
|
|
| 3185 |
|
|
procedure TIBCustomDataSet.DoBeforeInsert; |
| 3186 |
|
|
begin |
| 3187 |
|
|
if not CanInsert then |
| 3188 |
|
|
IBError(ibxeCannotInsert, [nil]); |
| 3189 |
|
|
inherited DoBeforeInsert; |
| 3190 |
|
|
end; |
| 3191 |
|
|
|
| 3192 |
|
|
procedure TIBCustomDataSet.DoAfterInsert; |
| 3193 |
|
|
begin |
| 3194 |
|
|
if GeneratorField.ApplyOnEvent = gaeOnNewRecord then |
| 3195 |
|
|
GeneratorField.Apply; |
| 3196 |
|
|
inherited DoAfterInsert; |
| 3197 |
|
|
FBase.DoAfterInsert(self); |
| 3198 |
|
|
end; |
| 3199 |
|
|
|
| 3200 |
|
|
procedure TIBCustomDataSet.DoBeforeClose; |
| 3201 |
|
|
begin |
| 3202 |
|
|
inherited DoBeforeClose; |
| 3203 |
tony |
45 |
if FInTransactionEnd and (FCloseAction = TARollback) then |
| 3204 |
|
|
Exit; |
| 3205 |
tony |
33 |
if State in [dsInsert,dsEdit] then |
| 3206 |
|
|
begin |
| 3207 |
|
|
if DataSetCloseAction = dcSaveChanges then |
| 3208 |
|
|
Post; |
| 3209 |
|
|
{Note this can fail with an exception e.g. due to |
| 3210 |
|
|
database validation error. In which case the dataset remains open } |
| 3211 |
|
|
end; |
| 3212 |
tony |
45 |
if FCachedUpdates and FUpdatesPending and (DataSetCloseAction = dcSaveChanges) then |
| 3213 |
|
|
ApplyUpdates; |
| 3214 |
tony |
33 |
end; |
| 3215 |
|
|
|
| 3216 |
|
|
procedure TIBCustomDataSet.DoBeforeOpen; |
| 3217 |
|
|
var i: integer; |
| 3218 |
|
|
begin |
| 3219 |
|
|
if assigned(FParser) then |
| 3220 |
|
|
FParser.Reset; |
| 3221 |
|
|
for i := 0 to FIBLinks.Count - 1 do |
| 3222 |
|
|
TIBControlLink(FIBLinks[i]).UpdateSQL(self); |
| 3223 |
|
|
inherited DoBeforeOpen; |
| 3224 |
|
|
for i := 0 to FIBLinks.Count - 1 do |
| 3225 |
|
|
TIBControlLink(FIBLinks[i]).UpdateParams(self); |
| 3226 |
|
|
end; |
| 3227 |
|
|
|
| 3228 |
|
|
procedure TIBCustomDataSet.DoBeforePost; |
| 3229 |
|
|
begin |
| 3230 |
|
|
inherited DoBeforePost; |
| 3231 |
|
|
if (State = dsInsert) and |
| 3232 |
|
|
(GeneratorField.ApplyOnEvent = gaeOnPostRecord) then |
| 3233 |
|
|
GeneratorField.Apply |
| 3234 |
|
|
end; |
| 3235 |
|
|
|
| 3236 |
|
|
procedure TIBCustomDataSet.DoAfterPost; |
| 3237 |
|
|
begin |
| 3238 |
|
|
inherited DoAfterPost; |
| 3239 |
|
|
FBase.DoAfterPost(self); |
| 3240 |
|
|
InternalAutoCommit; |
| 3241 |
|
|
end; |
| 3242 |
|
|
|
| 3243 |
|
|
procedure TIBCustomDataSet.FetchAll; |
| 3244 |
|
|
var |
| 3245 |
|
|
CurBookmark: TBookmark; |
| 3246 |
|
|
begin |
| 3247 |
|
|
FBase.SetCursor; |
| 3248 |
|
|
try |
| 3249 |
|
|
if FQSelect.EOF or not FQSelect.Open then |
| 3250 |
|
|
exit; |
| 3251 |
|
|
DisableControls; |
| 3252 |
|
|
try |
| 3253 |
|
|
CurBookmark := Bookmark; |
| 3254 |
|
|
Last; |
| 3255 |
|
|
Bookmark := CurBookmark; |
| 3256 |
|
|
finally |
| 3257 |
|
|
EnableControls; |
| 3258 |
|
|
end; |
| 3259 |
|
|
finally |
| 3260 |
|
|
FBase.RestoreCursor; |
| 3261 |
|
|
end; |
| 3262 |
|
|
end; |
| 3263 |
|
|
|
| 3264 |
|
|
procedure TIBCustomDataSet.FreeRecordBuffer(var Buffer: PChar); |
| 3265 |
|
|
begin |
| 3266 |
|
|
FreeMem(Buffer); |
| 3267 |
|
|
Buffer := nil; |
| 3268 |
|
|
end; |
| 3269 |
|
|
|
| 3270 |
|
|
procedure TIBCustomDataSet.GetBookmarkData(Buffer: PChar; Data: Pointer); |
| 3271 |
|
|
begin |
| 3272 |
|
|
Move(PRecordData(Buffer)^.rdRecordNumber, Data^, BookmarkSize); |
| 3273 |
|
|
end; |
| 3274 |
|
|
|
| 3275 |
|
|
function TIBCustomDataSet.GetBookmarkFlag(Buffer: PChar): TBookmarkFlag; |
| 3276 |
|
|
begin |
| 3277 |
|
|
result := PRecordData(Buffer)^.rdBookmarkFlag; |
| 3278 |
|
|
end; |
| 3279 |
|
|
|
| 3280 |
|
|
function TIBCustomDataSet.GetCanModify: Boolean; |
| 3281 |
|
|
begin |
| 3282 |
|
|
result := (FQInsert.SQL.Text <> '') or |
| 3283 |
|
|
(FQModify.SQL.Text <> '') or |
| 3284 |
|
|
(FQDelete.SQL.Text <> '') or |
| 3285 |
|
|
(Assigned(FUpdateObject)); |
| 3286 |
|
|
end; |
| 3287 |
|
|
|
| 3288 |
|
|
function TIBCustomDataSet.GetCurrentRecord(Buffer: PChar): Boolean; |
| 3289 |
|
|
begin |
| 3290 |
|
|
if not IsEmpty and (GetBookmarkFlag(ActiveBuffer) = bfCurrent) then |
| 3291 |
|
|
begin |
| 3292 |
|
|
UpdateCursorPos; |
| 3293 |
|
|
ReadRecordCache(PRecordData(ActiveBuffer)^.rdRecordNumber, Buffer, False); |
| 3294 |
|
|
result := True; |
| 3295 |
|
|
end |
| 3296 |
|
|
else |
| 3297 |
|
|
result := False; |
| 3298 |
|
|
end; |
| 3299 |
|
|
|
| 3300 |
|
|
function TIBCustomDataSet.GetDataSource: TDataSource; |
| 3301 |
|
|
begin |
| 3302 |
|
|
if FDataLink = nil then |
| 3303 |
|
|
result := nil |
| 3304 |
|
|
else |
| 3305 |
|
|
result := FDataLink.DataSource; |
| 3306 |
|
|
end; |
| 3307 |
|
|
|
| 3308 |
|
|
function TIBCustomDataSet.GetDBAliasName(FieldNo: integer): string; |
| 3309 |
|
|
begin |
| 3310 |
|
|
Result := FAliasNameMap[FieldNo-1] |
| 3311 |
|
|
end; |
| 3312 |
|
|
|
| 3313 |
|
|
function TIBCustomDataSet.GetFieldDefFromAlias(aliasName: string): TFieldDef; |
| 3314 |
|
|
var |
| 3315 |
|
|
i: integer; |
| 3316 |
|
|
begin |
| 3317 |
|
|
Result := nil; |
| 3318 |
|
|
for i := 0 to Length(FAliasNameMap) - 1 do |
| 3319 |
|
|
if FAliasNameMap[i] = aliasName then |
| 3320 |
|
|
begin |
| 3321 |
|
|
Result := FieldDefs[i]; |
| 3322 |
|
|
Exit |
| 3323 |
|
|
end; |
| 3324 |
|
|
end; |
| 3325 |
|
|
|
| 3326 |
|
|
function TIBCustomDataSet.GetFieldClass(FieldType: TFieldType): TFieldClass; |
| 3327 |
|
|
begin |
| 3328 |
|
|
Result := DefaultFieldClasses[FieldType]; |
| 3329 |
|
|
end; |
| 3330 |
|
|
|
| 3331 |
|
|
function TIBCustomDataSet.GetFieldData(FieldNo: Integer; Buffer: Pointer): Boolean; |
| 3332 |
|
|
begin |
| 3333 |
|
|
result := GetFieldData(FieldByNumber(FieldNo), buffer); |
| 3334 |
|
|
end; |
| 3335 |
|
|
|
| 3336 |
|
|
function TIBCustomDataSet.InternalGetFieldData(Field: TField; Buffer: Pointer): Boolean; |
| 3337 |
|
|
var |
| 3338 |
|
|
Buff, Data: PChar; |
| 3339 |
|
|
CurrentRecord: PRecordData; |
| 3340 |
|
|
begin |
| 3341 |
|
|
result := False; |
| 3342 |
|
|
Buff := GetActiveBuf; |
| 3343 |
|
|
if (Buff = nil) or |
| 3344 |
|
|
(not IsVisible(Buff)) or not assigned(Field.DataSet) then |
| 3345 |
|
|
exit; |
| 3346 |
|
|
{ The intention here is to stuff the buffer with the data for the |
| 3347 |
|
|
referenced field for the current record } |
| 3348 |
|
|
CurrentRecord := PRecordData(Buff); |
| 3349 |
|
|
if (Field.FieldNo < 0) then |
| 3350 |
|
|
begin |
| 3351 |
|
|
Inc(Buff, FRecordSize + Field.Offset); |
| 3352 |
|
|
result := Boolean(Buff[0]); |
| 3353 |
|
|
if result and (Buffer <> nil) then |
| 3354 |
|
|
Move(Buff[1], Buffer^, Field.DataSize); |
| 3355 |
|
|
end |
| 3356 |
tony |
45 |
else |
| 3357 |
|
|
if (FMappedFieldPosition[Field.FieldNo - 1] > 0) and |
| 3358 |
tony |
33 |
(FMappedFieldPosition[Field.FieldNo - 1] <= CurrentRecord^.rdFieldCount) then |
| 3359 |
tony |
45 |
with CurrentRecord^.rdFields[FMappedFieldPosition[Field.FieldNo - 1]], |
| 3360 |
|
|
FFieldColumns^[FMappedFieldPosition[Field.FieldNo - 1]] do |
| 3361 |
tony |
33 |
begin |
| 3362 |
tony |
45 |
result := not fdIsNull; |
| 3363 |
tony |
33 |
if result and (Buffer <> nil) then |
| 3364 |
|
|
begin |
| 3365 |
tony |
45 |
Data := Buff + fdDataOfs; |
| 3366 |
tony |
33 |
if (fdDataType = SQL_VARYING) or (fdDataType = SQL_TEXT) then |
| 3367 |
|
|
begin |
| 3368 |
|
|
if fdDataLength < Field.DataSize then |
| 3369 |
|
|
begin |
| 3370 |
|
|
Move(Data^, Buffer^, fdDataLength); |
| 3371 |
|
|
PChar(Buffer)[fdDataLength] := #0; |
| 3372 |
|
|
end |
| 3373 |
|
|
else |
| 3374 |
|
|
IBError(ibxeFieldSizeError,[Field.FieldName]) |
| 3375 |
|
|
end |
| 3376 |
|
|
else |
| 3377 |
|
|
Move(Data^, Buffer^, Field.DataSize); |
| 3378 |
|
|
end; |
| 3379 |
|
|
end; |
| 3380 |
|
|
end; |
| 3381 |
|
|
|
| 3382 |
|
|
{ GetRecNo and SetRecNo both operate off of 1-based indexes as |
| 3383 |
|
|
opposed to 0-based indexes. |
| 3384 |
|
|
This is because we want LastRecordNumber/RecordCount = 1 } |
| 3385 |
|
|
|
| 3386 |
|
|
function TIBCustomDataSet.GetRecNo: Integer; |
| 3387 |
|
|
begin |
| 3388 |
|
|
if GetActiveBuf = nil then |
| 3389 |
|
|
result := 0 |
| 3390 |
|
|
else |
| 3391 |
|
|
result := PRecordData(GetActiveBuf)^.rdRecordNumber + 1; |
| 3392 |
|
|
end; |
| 3393 |
|
|
|
| 3394 |
|
|
function TIBCustomDataSet.GetRecord(Buffer: PChar; GetMode: TGetMode; |
| 3395 |
|
|
DoCheck: Boolean): TGetResult; |
| 3396 |
|
|
var |
| 3397 |
|
|
Accept: Boolean; |
| 3398 |
|
|
SaveState: TDataSetState; |
| 3399 |
|
|
begin |
| 3400 |
|
|
Result := grOK; |
| 3401 |
|
|
if Filtered and Assigned(OnFilterRecord) then |
| 3402 |
|
|
begin |
| 3403 |
|
|
Accept := False; |
| 3404 |
|
|
SaveState := SetTempState(dsFilter); |
| 3405 |
|
|
while not Accept do |
| 3406 |
|
|
begin |
| 3407 |
|
|
Result := InternalGetRecord(Buffer, GetMode, DoCheck); |
| 3408 |
|
|
if Result <> grOK then |
| 3409 |
|
|
break; |
| 3410 |
|
|
FFilterBuffer := Buffer; |
| 3411 |
|
|
try |
| 3412 |
|
|
Accept := True; |
| 3413 |
|
|
OnFilterRecord(Self, Accept); |
| 3414 |
|
|
if not Accept and (GetMode = gmCurrent) then |
| 3415 |
|
|
GetMode := gmPrior; |
| 3416 |
|
|
except |
| 3417 |
|
|
// FBase.HandleException(Self); |
| 3418 |
|
|
end; |
| 3419 |
|
|
end; |
| 3420 |
|
|
RestoreState(SaveState); |
| 3421 |
|
|
end |
| 3422 |
|
|
else |
| 3423 |
|
|
Result := InternalGetRecord(Buffer, GetMode, DoCheck); |
| 3424 |
|
|
end; |
| 3425 |
|
|
|
| 3426 |
|
|
function TIBCustomDataSet.InternalGetRecord(Buffer: PChar; GetMode: TGetMode; |
| 3427 |
|
|
DoCheck: Boolean): TGetResult; |
| 3428 |
|
|
begin |
| 3429 |
|
|
result := grError; |
| 3430 |
|
|
case GetMode of |
| 3431 |
|
|
gmCurrent: begin |
| 3432 |
|
|
if (FCurrentRecord >= 0) then begin |
| 3433 |
|
|
if FCurrentRecord < FRecordCount then |
| 3434 |
|
|
ReadRecordCache(FCurrentRecord, Buffer, False) |
| 3435 |
|
|
else begin |
| 3436 |
tony |
45 |
while (not FQSelect.EOF) and FQSelect.Next and |
| 3437 |
tony |
33 |
(FCurrentRecord >= FRecordCount) do begin |
| 3438 |
|
|
FetchCurrentRecordToBuffer(FQSelect, FRecordCount, Buffer); |
| 3439 |
|
|
Inc(FRecordCount); |
| 3440 |
|
|
end; |
| 3441 |
|
|
FCurrentRecord := FRecordCount - 1; |
| 3442 |
|
|
if (FCurrentRecord >= 0) then |
| 3443 |
|
|
ReadRecordCache(FCurrentRecord, Buffer, False); |
| 3444 |
|
|
end; |
| 3445 |
|
|
result := grOk; |
| 3446 |
|
|
end else |
| 3447 |
|
|
result := grBOF; |
| 3448 |
|
|
end; |
| 3449 |
|
|
gmNext: begin |
| 3450 |
|
|
result := grOk; |
| 3451 |
|
|
if FCurrentRecord = FRecordCount then |
| 3452 |
|
|
result := grEOF |
| 3453 |
|
|
else if FCurrentRecord = FRecordCount - 1 then begin |
| 3454 |
|
|
if (not FQSelect.EOF) then begin |
| 3455 |
|
|
FQSelect.Next; |
| 3456 |
|
|
Inc(FCurrentRecord); |
| 3457 |
|
|
end; |
| 3458 |
|
|
if (FQSelect.EOF) then begin |
| 3459 |
|
|
result := grEOF; |
| 3460 |
|
|
end else begin |
| 3461 |
|
|
Inc(FRecordCount); |
| 3462 |
|
|
FetchCurrentRecordToBuffer(FQSelect, FCurrentRecord, Buffer); |
| 3463 |
|
|
end; |
| 3464 |
|
|
end else if (FCurrentRecord < FRecordCount) then begin |
| 3465 |
|
|
Inc(FCurrentRecord); |
| 3466 |
|
|
ReadRecordCache(FCurrentRecord, Buffer, False); |
| 3467 |
|
|
end; |
| 3468 |
|
|
end; |
| 3469 |
|
|
else { gmPrior } |
| 3470 |
|
|
begin |
| 3471 |
|
|
if (FCurrentRecord = 0) then begin |
| 3472 |
|
|
Dec(FCurrentRecord); |
| 3473 |
|
|
result := grBOF; |
| 3474 |
|
|
end else if (FCurrentRecord > 0) and |
| 3475 |
|
|
(FCurrentRecord <= FRecordCount) then begin |
| 3476 |
|
|
Dec(FCurrentRecord); |
| 3477 |
|
|
ReadRecordCache(FCurrentRecord, Buffer, False); |
| 3478 |
|
|
result := grOk; |
| 3479 |
|
|
end else if (FCurrentRecord = -1) then |
| 3480 |
|
|
result := grBOF; |
| 3481 |
|
|
end; |
| 3482 |
|
|
end; |
| 3483 |
|
|
if result = grOk then |
| 3484 |
|
|
result := AdjustCurrentRecord(Buffer, GetMode); |
| 3485 |
|
|
if result = grOk then with PRecordData(Buffer)^ do begin |
| 3486 |
|
|
rdBookmarkFlag := bfCurrent; |
| 3487 |
|
|
GetCalcFields(Buffer); |
| 3488 |
|
|
end else if (result = grEOF) then begin |
| 3489 |
|
|
CopyRecordBuffer(FModelBuffer, Buffer); |
| 3490 |
|
|
PRecordData(Buffer)^.rdBookmarkFlag := bfEOF; |
| 3491 |
|
|
end else if (result = grBOF) then begin |
| 3492 |
|
|
CopyRecordBuffer(FModelBuffer, Buffer); |
| 3493 |
|
|
PRecordData(Buffer)^.rdBookmarkFlag := bfBOF; |
| 3494 |
|
|
end else if (result = grError) then begin |
| 3495 |
|
|
CopyRecordBuffer(FModelBuffer, Buffer); |
| 3496 |
|
|
PRecordData(Buffer)^.rdBookmarkFlag := bfEOF; |
| 3497 |
|
|
end;; |
| 3498 |
|
|
end; |
| 3499 |
|
|
|
| 3500 |
|
|
function TIBCustomDataSet.GetRecordCount: Integer; |
| 3501 |
|
|
begin |
| 3502 |
|
|
result := FRecordCount - FDeletedRecords; |
| 3503 |
|
|
end; |
| 3504 |
|
|
|
| 3505 |
|
|
function TIBCustomDataSet.GetRecordSize: Word; |
| 3506 |
|
|
begin |
| 3507 |
|
|
result := FRecordBufferSize; |
| 3508 |
|
|
end; |
| 3509 |
|
|
|
| 3510 |
|
|
procedure TIBCustomDataSet.InternalAutoCommit; |
| 3511 |
|
|
begin |
| 3512 |
|
|
with Transaction do |
| 3513 |
|
|
if InTransaction and (FAutoCommit = acCommitRetaining) then |
| 3514 |
|
|
begin |
| 3515 |
|
|
if CachedUpdates then ApplyUpdates; |
| 3516 |
|
|
CommitRetaining; |
| 3517 |
|
|
end; |
| 3518 |
|
|
end; |
| 3519 |
|
|
|
| 3520 |
|
|
procedure TIBCustomDataSet.InternalAddRecord(Buffer: Pointer; Append: Boolean); |
| 3521 |
|
|
begin |
| 3522 |
|
|
CheckEditState; |
| 3523 |
|
|
begin |
| 3524 |
|
|
{ When adding records, we *always* append. |
| 3525 |
|
|
Insertion is just too costly } |
| 3526 |
|
|
AdjustRecordOnInsert(Buffer); |
| 3527 |
|
|
with PRecordData(Buffer)^ do |
| 3528 |
|
|
begin |
| 3529 |
|
|
rdUpdateStatus := usInserted; |
| 3530 |
|
|
rdCachedUpdateStatus := cusInserted; |
| 3531 |
|
|
end; |
| 3532 |
|
|
if not CachedUpdates then |
| 3533 |
|
|
InternalPostRecord(FQInsert, Buffer) |
| 3534 |
|
|
else begin |
| 3535 |
|
|
WriteRecordCache(FCurrentRecord, Buffer); |
| 3536 |
|
|
FUpdatesPending := True; |
| 3537 |
|
|
end; |
| 3538 |
|
|
Inc(FRecordCount); |
| 3539 |
|
|
InternalSetToRecord(Buffer); |
| 3540 |
|
|
end |
| 3541 |
|
|
end; |
| 3542 |
|
|
|
| 3543 |
|
|
procedure TIBCustomDataSet.InternalCancel; |
| 3544 |
|
|
var |
| 3545 |
|
|
Buff: PChar; |
| 3546 |
|
|
CurRec: Integer; |
| 3547 |
tony |
45 |
pda: PArrayDataArray; |
| 3548 |
|
|
i: integer; |
| 3549 |
tony |
33 |
begin |
| 3550 |
|
|
inherited InternalCancel; |
| 3551 |
|
|
Buff := GetActiveBuf; |
| 3552 |
tony |
45 |
if Buff <> nil then |
| 3553 |
|
|
begin |
| 3554 |
|
|
pda := PArrayDataArray(Buff + FArrayCacheOffset); |
| 3555 |
|
|
for i := 0 to ArrayFieldCount - 1 do |
| 3556 |
|
|
pda^[i].ArrayIntf.CancelChanges; |
| 3557 |
tony |
33 |
CurRec := FCurrentRecord; |
| 3558 |
|
|
AdjustRecordOnInsert(Buff); |
| 3559 |
|
|
if (State = dsEdit) then begin |
| 3560 |
|
|
CopyRecordBuffer(FOldBuffer, Buff); |
| 3561 |
|
|
WriteRecordCache(PRecordData(Buff)^.rdRecordNumber, Buff); |
| 3562 |
|
|
end else begin |
| 3563 |
|
|
CopyRecordBuffer(FModelBuffer, Buff); |
| 3564 |
|
|
PRecordData(Buff)^.rdUpdateStatus := usDeleted; |
| 3565 |
|
|
PRecordData(Buff)^.rdCachedUpdateStatus := cusUnmodified; |
| 3566 |
|
|
PRecordData(Buff)^.rdBookmarkFlag := bfEOF; |
| 3567 |
|
|
FCurrentRecord := CurRec; |
| 3568 |
|
|
end; |
| 3569 |
|
|
end; |
| 3570 |
|
|
end; |
| 3571 |
|
|
|
| 3572 |
|
|
|
| 3573 |
|
|
procedure TIBCustomDataSet.InternalClose; |
| 3574 |
|
|
begin |
| 3575 |
|
|
if FDidActivate then |
| 3576 |
|
|
DeactivateTransaction; |
| 3577 |
|
|
FQSelect.Close; |
| 3578 |
|
|
ClearBlobCache; |
| 3579 |
tony |
45 |
ClearArrayCache; |
| 3580 |
tony |
33 |
FreeRecordBuffer(FModelBuffer); |
| 3581 |
|
|
FreeRecordBuffer(FOldBuffer); |
| 3582 |
|
|
FCurrentRecord := -1; |
| 3583 |
|
|
FOpen := False; |
| 3584 |
|
|
FRecordCount := 0; |
| 3585 |
|
|
FDeletedRecords := 0; |
| 3586 |
|
|
FRecordSize := 0; |
| 3587 |
|
|
FBPos := 0; |
| 3588 |
|
|
FOBPos := 0; |
| 3589 |
|
|
FCacheSize := 0; |
| 3590 |
|
|
FOldCacheSize := 0; |
| 3591 |
|
|
FBEnd := 0; |
| 3592 |
|
|
FOBEnd := 0; |
| 3593 |
|
|
FreeMem(FBufferCache); |
| 3594 |
|
|
FBufferCache := nil; |
| 3595 |
tony |
45 |
FreeMem(FFieldColumns); |
| 3596 |
|
|
FFieldColumns := nil; |
| 3597 |
tony |
33 |
FreeMem(FOldBufferCache); |
| 3598 |
|
|
FOldBufferCache := nil; |
| 3599 |
|
|
BindFields(False); |
| 3600 |
tony |
35 |
ResetParser; |
| 3601 |
tony |
33 |
if DefaultFields then DestroyFields; |
| 3602 |
|
|
end; |
| 3603 |
|
|
|
| 3604 |
|
|
procedure TIBCustomDataSet.InternalDelete; |
| 3605 |
|
|
var |
| 3606 |
|
|
Buff: PChar; |
| 3607 |
|
|
begin |
| 3608 |
|
|
FBase.SetCursor; |
| 3609 |
|
|
try |
| 3610 |
|
|
Buff := GetActiveBuf; |
| 3611 |
|
|
if CanDelete then |
| 3612 |
|
|
begin |
| 3613 |
|
|
if not CachedUpdates then |
| 3614 |
|
|
InternalDeleteRecord(FQDelete, Buff) |
| 3615 |
|
|
else |
| 3616 |
|
|
begin |
| 3617 |
|
|
with PRecordData(Buff)^ do |
| 3618 |
|
|
begin |
| 3619 |
|
|
if rdCachedUpdateStatus = cusInserted then |
| 3620 |
|
|
rdCachedUpdateStatus := cusUninserted |
| 3621 |
|
|
else begin |
| 3622 |
|
|
rdUpdateStatus := usDeleted; |
| 3623 |
|
|
rdCachedUpdateStatus := cusDeleted; |
| 3624 |
|
|
end; |
| 3625 |
|
|
end; |
| 3626 |
|
|
WriteRecordCache(PRecordData(Buff)^.rdRecordNumber, Buff); |
| 3627 |
|
|
end; |
| 3628 |
|
|
Inc(FDeletedRecords); |
| 3629 |
|
|
FUpdatesPending := True; |
| 3630 |
|
|
end else |
| 3631 |
|
|
IBError(ibxeCannotDelete, [nil]); |
| 3632 |
|
|
finally |
| 3633 |
|
|
FBase.RestoreCursor; |
| 3634 |
|
|
end; |
| 3635 |
|
|
end; |
| 3636 |
|
|
|
| 3637 |
|
|
procedure TIBCustomDataSet.InternalFirst; |
| 3638 |
|
|
begin |
| 3639 |
|
|
FCurrentRecord := -1; |
| 3640 |
|
|
end; |
| 3641 |
|
|
|
| 3642 |
|
|
procedure TIBCustomDataSet.InternalGotoBookmark(Bookmark: Pointer); |
| 3643 |
|
|
begin |
| 3644 |
|
|
FCurrentRecord := PInteger(Bookmark)^; |
| 3645 |
|
|
end; |
| 3646 |
|
|
|
| 3647 |
|
|
procedure TIBCustomDataSet.InternalHandleException; |
| 3648 |
|
|
begin |
| 3649 |
|
|
FBase.HandleException(Self) |
| 3650 |
|
|
end; |
| 3651 |
|
|
|
| 3652 |
|
|
procedure TIBCustomDataSet.InternalInitFieldDefs; |
| 3653 |
|
|
begin |
| 3654 |
|
|
if not InternalPrepared then |
| 3655 |
|
|
begin |
| 3656 |
|
|
InternalPrepare; |
| 3657 |
|
|
exit; |
| 3658 |
|
|
end; |
| 3659 |
|
|
FieldDefsFromQuery(FQSelect); |
| 3660 |
|
|
end; |
| 3661 |
|
|
|
| 3662 |
|
|
procedure TIBCustomDataSet.FieldDefsFromQuery(SourceQuery: TIBSQL); |
| 3663 |
|
|
const |
| 3664 |
|
|
DefaultSQL = 'Select F.RDB$COMPUTED_BLR, ' + {do not localize} |
| 3665 |
|
|
'F.RDB$DEFAULT_VALUE, R.RDB$FIELD_NAME ' + {do not localize} |
| 3666 |
|
|
'from RDB$RELATION_FIELDS R, RDB$FIELDS F ' + {do not localize} |
| 3667 |
|
|
'where R.RDB$RELATION_NAME = :RELATION ' + {do not localize} |
| 3668 |
|
|
'and R.RDB$FIELD_SOURCE = F.RDB$FIELD_NAME '+ {do not localize} |
| 3669 |
|
|
'and ((not F.RDB$COMPUTED_BLR is NULL) or ' + {do not localize} |
| 3670 |
|
|
' (not F.RDB$DEFAULT_VALUE is NULL)) '; {do not localize} |
| 3671 |
|
|
var |
| 3672 |
|
|
FieldType: TFieldType; |
| 3673 |
|
|
FieldSize: Word; |
| 3674 |
tony |
45 |
charSetID: short; |
| 3675 |
tony |
33 |
CharSetSize: integer; |
| 3676 |
tony |
39 |
CharSetName: RawByteString; |
| 3677 |
|
|
FieldCodePage: TSystemCodePage; |
| 3678 |
tony |
33 |
FieldNullable : Boolean; |
| 3679 |
|
|
i, FieldPosition, FieldPrecision: Integer; |
| 3680 |
|
|
FieldAliasName, DBAliasName: string; |
| 3681 |
tony |
45 |
aRelationName, FieldName: string; |
| 3682 |
tony |
33 |
Query : TIBSQL; |
| 3683 |
|
|
FieldIndex: Integer; |
| 3684 |
|
|
FRelationNodes : TRelationNode; |
| 3685 |
tony |
45 |
aArrayDimensions: integer; |
| 3686 |
|
|
aArrayBounds: TArrayBounds; |
| 3687 |
|
|
ArrayMetaData: IArrayMetaData; |
| 3688 |
tony |
33 |
|
| 3689 |
|
|
function Add_Node(Relation, Field : String) : TRelationNode; |
| 3690 |
|
|
var |
| 3691 |
|
|
FField : TFieldNode; |
| 3692 |
|
|
begin |
| 3693 |
|
|
if FRelationNodes.RelationName = '' then |
| 3694 |
|
|
Result := FRelationNodes |
| 3695 |
|
|
else |
| 3696 |
|
|
begin |
| 3697 |
|
|
Result := TRelationNode.Create; |
| 3698 |
|
|
Result.NextRelation := FRelationNodes; |
| 3699 |
|
|
end; |
| 3700 |
|
|
Result.RelationName := Relation; |
| 3701 |
|
|
FRelationNodes := Result; |
| 3702 |
|
|
Query.Params[0].AsString := Relation; |
| 3703 |
|
|
Query.ExecQuery; |
| 3704 |
|
|
while not Query.Eof do |
| 3705 |
|
|
begin |
| 3706 |
|
|
FField := TFieldNode.Create; |
| 3707 |
|
|
FField.FieldName := Query.Fields[2].AsString; |
| 3708 |
|
|
FField.DEFAULT_VALUE := not Query.Fields[1].IsNull; |
| 3709 |
|
|
FField.COMPUTED_BLR := not Query.Fields[0].IsNull; |
| 3710 |
|
|
FField.NextField := Result.FieldNodes; |
| 3711 |
|
|
Result.FieldNodes := FField; |
| 3712 |
|
|
Query.Next; |
| 3713 |
|
|
end; |
| 3714 |
|
|
Query.Close; |
| 3715 |
|
|
end; |
| 3716 |
|
|
|
| 3717 |
|
|
function Has_COMPUTED_BLR(Relation, Field : String) : Boolean; |
| 3718 |
|
|
var |
| 3719 |
|
|
FRelation : TRelationNode; |
| 3720 |
|
|
FField : TFieldNode; |
| 3721 |
|
|
begin |
| 3722 |
|
|
FRelation := FRelationNodes; |
| 3723 |
|
|
while Assigned(FRelation) and |
| 3724 |
|
|
(FRelation.RelationName <> Relation) do |
| 3725 |
|
|
FRelation := FRelation.NextRelation; |
| 3726 |
|
|
if not Assigned(FRelation) then |
| 3727 |
|
|
FRelation := Add_Node(Relation, Field); |
| 3728 |
|
|
Result := false; |
| 3729 |
|
|
FField := FRelation.FieldNodes; |
| 3730 |
|
|
while Assigned(FField) do |
| 3731 |
|
|
if FField.FieldName = Field then |
| 3732 |
|
|
begin |
| 3733 |
|
|
Result := Ffield.COMPUTED_BLR; |
| 3734 |
|
|
Exit; |
| 3735 |
|
|
end |
| 3736 |
|
|
else |
| 3737 |
|
|
FField := Ffield.NextField; |
| 3738 |
|
|
end; |
| 3739 |
|
|
|
| 3740 |
|
|
function Has_DEFAULT_VALUE(Relation, Field : String) : Boolean; |
| 3741 |
|
|
var |
| 3742 |
|
|
FRelation : TRelationNode; |
| 3743 |
|
|
FField : TFieldNode; |
| 3744 |
|
|
begin |
| 3745 |
|
|
FRelation := FRelationNodes; |
| 3746 |
|
|
while Assigned(FRelation) and |
| 3747 |
|
|
(FRelation.RelationName <> Relation) do |
| 3748 |
|
|
FRelation := FRelation.NextRelation; |
| 3749 |
|
|
if not Assigned(FRelation) then |
| 3750 |
|
|
FRelation := Add_Node(Relation, Field); |
| 3751 |
|
|
Result := false; |
| 3752 |
|
|
FField := FRelation.FieldNodes; |
| 3753 |
|
|
while Assigned(FField) do |
| 3754 |
|
|
if FField.FieldName = Field then |
| 3755 |
|
|
begin |
| 3756 |
|
|
Result := Ffield.DEFAULT_VALUE; |
| 3757 |
|
|
Exit; |
| 3758 |
|
|
end |
| 3759 |
|
|
else |
| 3760 |
|
|
FField := Ffield.NextField; |
| 3761 |
|
|
end; |
| 3762 |
|
|
|
| 3763 |
|
|
Procedure FreeNodes; |
| 3764 |
|
|
var |
| 3765 |
|
|
FRelation : TRelationNode; |
| 3766 |
|
|
FField : TFieldNode; |
| 3767 |
|
|
begin |
| 3768 |
|
|
while Assigned(FRelationNodes) do |
| 3769 |
|
|
begin |
| 3770 |
|
|
While Assigned(FRelationNodes.FieldNodes) do |
| 3771 |
|
|
begin |
| 3772 |
|
|
FField := FRelationNodes.FieldNodes.NextField; |
| 3773 |
|
|
FRelationNodes.FieldNodes.Free; |
| 3774 |
|
|
FRelationNodes.FieldNodes := FField; |
| 3775 |
|
|
end; |
| 3776 |
|
|
FRelation := FRelationNodes.NextRelation; |
| 3777 |
|
|
FRelationNodes.Free; |
| 3778 |
|
|
FRelationNodes := FRelation; |
| 3779 |
|
|
end; |
| 3780 |
|
|
end; |
| 3781 |
|
|
|
| 3782 |
|
|
begin |
| 3783 |
|
|
FRelationNodes := TRelationNode.Create; |
| 3784 |
|
|
FNeedsRefresh := False; |
| 3785 |
tony |
45 |
if not Database.InternalTransaction.InTransaction then |
| 3786 |
|
|
Database.InternalTransaction.StartTransaction; |
| 3787 |
tony |
33 |
Query := TIBSQL.Create(self); |
| 3788 |
|
|
try |
| 3789 |
|
|
Query.Database := DataBase; |
| 3790 |
|
|
Query.Transaction := Database.InternalTransaction; |
| 3791 |
|
|
FieldDefs.BeginUpdate; |
| 3792 |
|
|
FieldDefs.Clear; |
| 3793 |
|
|
FieldIndex := 0; |
| 3794 |
tony |
45 |
if (Length(FMappedFieldPosition) < SourceQuery.MetaData.Count) then |
| 3795 |
|
|
SetLength(FMappedFieldPosition, SourceQuery.MetaData.Count); |
| 3796 |
tony |
33 |
Query.SQL.Text := DefaultSQL; |
| 3797 |
|
|
Query.Prepare; |
| 3798 |
tony |
45 |
SetLength(FAliasNameMap, SourceQuery.MetaData.Count); |
| 3799 |
|
|
SetLength(FAliasNameList, SourceQuery.MetaData.Count); |
| 3800 |
|
|
for i := 0 to SourceQuery.MetaData.GetCount - 1 do |
| 3801 |
|
|
with SourceQuery.MetaData[i] do |
| 3802 |
tony |
33 |
begin |
| 3803 |
|
|
{ Get the field name } |
| 3804 |
tony |
45 |
FieldAliasName := GetName; |
| 3805 |
|
|
DBAliasName := GetAliasname; |
| 3806 |
|
|
aRelationName := getRelationName; |
| 3807 |
|
|
FieldName := getSQLName; |
| 3808 |
tony |
33 |
FAliasNameList[i] := DBAliasName; |
| 3809 |
|
|
FieldSize := 0; |
| 3810 |
|
|
FieldPrecision := 0; |
| 3811 |
tony |
45 |
FieldNullable := IsNullable; |
| 3812 |
tony |
35 |
CharSetSize := 0; |
| 3813 |
|
|
CharSetName := ''; |
| 3814 |
tony |
39 |
FieldCodePage := CP_NONE; |
| 3815 |
tony |
45 |
aArrayDimensions := 0; |
| 3816 |
|
|
SetLength(aArrayBounds,0); |
| 3817 |
|
|
case SQLType of |
| 3818 |
tony |
33 |
{ All VARCHAR's must be converted to strings before recording |
| 3819 |
|
|
their values } |
| 3820 |
|
|
SQL_VARYING, SQL_TEXT: |
| 3821 |
|
|
begin |
| 3822 |
tony |
60 |
if not Database.Attachment.CharSetWidth(getCharSetID,CharSetSize) then |
| 3823 |
|
|
CharSetSize := 1; |
| 3824 |
|
|
CharSetName := Database.Attachment.GetCharsetName(getCharSetID); |
| 3825 |
|
|
Database.Attachment.CharSetID2CodePage(getCharSetID,FieldCodePage); |
| 3826 |
tony |
45 |
FieldSize := GetSize div CharSetSize; |
| 3827 |
tony |
43 |
FieldType := ftString; |
| 3828 |
tony |
33 |
end; |
| 3829 |
|
|
{ All Doubles/Floats should be cast to doubles } |
| 3830 |
|
|
SQL_DOUBLE, SQL_FLOAT: |
| 3831 |
|
|
FieldType := ftFloat; |
| 3832 |
|
|
SQL_SHORT: |
| 3833 |
|
|
begin |
| 3834 |
tony |
45 |
if (getScale = 0) then |
| 3835 |
tony |
33 |
FieldType := ftSmallInt |
| 3836 |
|
|
else begin |
| 3837 |
|
|
FieldType := ftBCD; |
| 3838 |
|
|
FieldPrecision := 4; |
| 3839 |
tony |
45 |
FieldSize := -getScale; |
| 3840 |
tony |
33 |
end; |
| 3841 |
|
|
end; |
| 3842 |
|
|
SQL_LONG: |
| 3843 |
|
|
begin |
| 3844 |
tony |
45 |
if (getScale = 0) then |
| 3845 |
tony |
33 |
FieldType := ftInteger |
| 3846 |
tony |
45 |
else if (getScale >= (-4)) then |
| 3847 |
tony |
33 |
begin |
| 3848 |
|
|
FieldType := ftBCD; |
| 3849 |
|
|
FieldPrecision := 9; |
| 3850 |
tony |
45 |
FieldSize := -getScale; |
| 3851 |
tony |
33 |
end |
| 3852 |
|
|
else |
| 3853 |
|
|
if Database.SQLDialect = 1 then |
| 3854 |
|
|
FieldType := ftFloat |
| 3855 |
|
|
else |
| 3856 |
|
|
if (FieldCount > i) and (Fields[i] is TFloatField) then |
| 3857 |
|
|
FieldType := ftFloat |
| 3858 |
|
|
else |
| 3859 |
|
|
begin |
| 3860 |
|
|
FieldType := ftFMTBCD; |
| 3861 |
|
|
FieldPrecision := 9; |
| 3862 |
tony |
45 |
FieldSize := -getScale; |
| 3863 |
tony |
33 |
end; |
| 3864 |
|
|
end; |
| 3865 |
|
|
|
| 3866 |
|
|
SQL_INT64: |
| 3867 |
|
|
begin |
| 3868 |
tony |
45 |
if (getScale = 0) then |
| 3869 |
tony |
33 |
FieldType := ftLargeInt |
| 3870 |
tony |
45 |
else if (getScale >= (-4)) then |
| 3871 |
tony |
33 |
begin |
| 3872 |
|
|
FieldType := ftBCD; |
| 3873 |
|
|
FieldPrecision := 18; |
| 3874 |
tony |
45 |
FieldSize := -getScale; |
| 3875 |
tony |
33 |
end |
| 3876 |
|
|
else |
| 3877 |
|
|
FieldType := ftFloat |
| 3878 |
|
|
end; |
| 3879 |
|
|
SQL_TIMESTAMP: FieldType := ftDateTime; |
| 3880 |
|
|
SQL_TYPE_TIME: FieldType := ftTime; |
| 3881 |
|
|
SQL_TYPE_DATE: FieldType := ftDate; |
| 3882 |
|
|
SQL_BLOB: |
| 3883 |
|
|
begin |
| 3884 |
|
|
FieldSize := sizeof (TISC_QUAD); |
| 3885 |
tony |
45 |
if (getSubtype = 1) then |
| 3886 |
tony |
35 |
begin |
| 3887 |
tony |
60 |
if not Database.Attachment.CharSetWidth(getCharSetID,CharSetSize) then |
| 3888 |
|
|
CharSetSize := 1; |
| 3889 |
|
|
CharSetName := Database.Attachment.GetCharsetName(getCharSetID); |
| 3890 |
|
|
Database.Attachment.CharSetID2CodePage(getCharSetID,FieldCodePage); |
| 3891 |
tony |
43 |
FieldType := ftMemo; |
| 3892 |
tony |
35 |
end |
| 3893 |
tony |
33 |
else |
| 3894 |
|
|
FieldType := ftBlob; |
| 3895 |
|
|
end; |
| 3896 |
|
|
SQL_ARRAY: |
| 3897 |
|
|
begin |
| 3898 |
|
|
FieldSize := sizeof (TISC_QUAD); |
| 3899 |
tony |
45 |
FieldType := ftArray; |
| 3900 |
|
|
ArrayMetaData := GetArrayMetaData; |
| 3901 |
|
|
if ArrayMetaData <> nil then |
| 3902 |
|
|
begin |
| 3903 |
|
|
aArrayDimensions := ArrayMetaData.GetDimensions; |
| 3904 |
|
|
aArrayBounds := ArrayMetaData.GetBounds; |
| 3905 |
|
|
end; |
| 3906 |
tony |
33 |
end; |
| 3907 |
|
|
SQL_BOOLEAN: |
| 3908 |
|
|
FieldType:= ftBoolean; |
| 3909 |
|
|
else |
| 3910 |
|
|
FieldType := ftUnknown; |
| 3911 |
|
|
end; |
| 3912 |
|
|
FieldPosition := i + 1; |
| 3913 |
|
|
if (FieldType <> ftUnknown) and (FieldAliasName <> 'IBX_INTERNAL_DBKEY') then {do not localize} |
| 3914 |
|
|
begin |
| 3915 |
|
|
FMappedFieldPosition[FieldIndex] := FieldPosition; |
| 3916 |
|
|
Inc(FieldIndex); |
| 3917 |
tony |
35 |
with TIBFieldDef.Create(FieldDefs,'',FieldType,0,False,FieldDefs.Count+1) do |
| 3918 |
tony |
33 |
begin |
| 3919 |
|
|
Name := FieldAliasName; |
| 3920 |
|
|
FAliasNameMap[FieldNo-1] := DBAliasName; |
| 3921 |
|
|
Size := FieldSize; |
| 3922 |
|
|
Precision := FieldPrecision; |
| 3923 |
|
|
Required := not FieldNullable; |
| 3924 |
tony |
45 |
RelationName := aRelationName; |
| 3925 |
tony |
33 |
InternalCalcField := False; |
| 3926 |
tony |
35 |
CharacterSetSize := CharSetSize; |
| 3927 |
|
|
CharacterSetName := CharSetName; |
| 3928 |
tony |
39 |
CodePage := FieldCodePage; |
| 3929 |
tony |
45 |
ArrayDimensions := aArrayDimensions; |
| 3930 |
|
|
ArrayBounds := aArrayBounds; |
| 3931 |
tony |
33 |
if (FieldName <> '') and (RelationName <> '') then |
| 3932 |
|
|
begin |
| 3933 |
|
|
if Has_COMPUTED_BLR(RelationName, FieldName) then |
| 3934 |
|
|
begin |
| 3935 |
|
|
Attributes := [faReadOnly]; |
| 3936 |
|
|
InternalCalcField := True; |
| 3937 |
|
|
FNeedsRefresh := True; |
| 3938 |
|
|
end |
| 3939 |
|
|
else |
| 3940 |
|
|
begin |
| 3941 |
|
|
if Has_DEFAULT_VALUE(RelationName, FieldName) then |
| 3942 |
|
|
begin |
| 3943 |
|
|
if not FieldNullable then |
| 3944 |
|
|
Attributes := [faRequired]; |
| 3945 |
|
|
end |
| 3946 |
|
|
else |
| 3947 |
|
|
FNeedsRefresh := True; |
| 3948 |
|
|
end; |
| 3949 |
|
|
end; |
| 3950 |
|
|
end; |
| 3951 |
|
|
end; |
| 3952 |
|
|
end; |
| 3953 |
|
|
finally |
| 3954 |
|
|
Query.free; |
| 3955 |
|
|
FreeNodes; |
| 3956 |
|
|
Database.InternalTransaction.Commit; |
| 3957 |
|
|
FieldDefs.EndUpdate; |
| 3958 |
tony |
45 |
FieldDefs.Updated := true; |
| 3959 |
tony |
33 |
end; |
| 3960 |
|
|
end; |
| 3961 |
|
|
|
| 3962 |
|
|
procedure TIBCustomDataSet.InternalInitRecord(Buffer: PChar); |
| 3963 |
|
|
begin |
| 3964 |
|
|
CopyRecordBuffer(FModelBuffer, Buffer); |
| 3965 |
|
|
end; |
| 3966 |
|
|
|
| 3967 |
|
|
procedure TIBCustomDataSet.InternalLast; |
| 3968 |
|
|
var |
| 3969 |
|
|
Buffer: PChar; |
| 3970 |
|
|
begin |
| 3971 |
|
|
if (FQSelect.EOF) then |
| 3972 |
|
|
FCurrentRecord := FRecordCount |
| 3973 |
|
|
else begin |
| 3974 |
|
|
Buffer := AllocRecordBuffer; |
| 3975 |
|
|
try |
| 3976 |
tony |
45 |
while FQSelect.Next do |
| 3977 |
tony |
33 |
begin |
| 3978 |
|
|
FetchCurrentRecordToBuffer(FQSelect, FRecordCount, Buffer); |
| 3979 |
|
|
Inc(FRecordCount); |
| 3980 |
|
|
end; |
| 3981 |
|
|
FCurrentRecord := FRecordCount; |
| 3982 |
|
|
finally |
| 3983 |
|
|
FreeRecordBuffer(Buffer); |
| 3984 |
|
|
end; |
| 3985 |
|
|
end; |
| 3986 |
|
|
end; |
| 3987 |
|
|
|
| 3988 |
|
|
procedure TIBCustomDataSet.InternalSetParamsFromCursor; |
| 3989 |
|
|
var |
| 3990 |
|
|
i: Integer; |
| 3991 |
tony |
45 |
cur_param: ISQLParam; |
| 3992 |
tony |
33 |
cur_field: TField; |
| 3993 |
|
|
s: TStream; |
| 3994 |
|
|
begin |
| 3995 |
|
|
if FQSelect.SQL.Text = '' then |
| 3996 |
|
|
IBError(ibxeEmptyQuery, [nil]); |
| 3997 |
|
|
if not FInternalPrepared then |
| 3998 |
|
|
InternalPrepare; |
| 3999 |
tony |
45 |
if (SQLParams.GetCount > 0) and (DataSource <> nil) and (DataSource.DataSet <> nil) then |
| 4000 |
tony |
33 |
begin |
| 4001 |
tony |
45 |
for i := 0 to SQLParams.GetCount - 1 do |
| 4002 |
tony |
33 |
begin |
| 4003 |
|
|
cur_field := DataSource.DataSet.FindField(SQLParams[i].Name); |
| 4004 |
|
|
cur_param := SQLParams[i]; |
| 4005 |
|
|
if (cur_field <> nil) then begin |
| 4006 |
|
|
if (cur_field.IsNull) then |
| 4007 |
|
|
cur_param.IsNull := True |
| 4008 |
|
|
else case cur_field.DataType of |
| 4009 |
|
|
ftString: |
| 4010 |
|
|
cur_param.AsString := cur_field.AsString; |
| 4011 |
|
|
ftBoolean: |
| 4012 |
|
|
cur_param.AsBoolean := cur_field.AsBoolean; |
| 4013 |
|
|
ftSmallint, ftWord: |
| 4014 |
|
|
cur_param.AsShort := cur_field.AsInteger; |
| 4015 |
|
|
ftInteger: |
| 4016 |
|
|
cur_param.AsLong := cur_field.AsInteger; |
| 4017 |
|
|
ftLargeInt: |
| 4018 |
|
|
cur_param.AsInt64 := TLargeIntField(cur_field).AsLargeInt; |
| 4019 |
|
|
ftFloat, ftCurrency: |
| 4020 |
|
|
cur_param.AsDouble := cur_field.AsFloat; |
| 4021 |
|
|
ftBCD: |
| 4022 |
|
|
cur_param.AsCurrency := cur_field.AsCurrency; |
| 4023 |
|
|
ftDate: |
| 4024 |
|
|
cur_param.AsDate := cur_field.AsDateTime; |
| 4025 |
|
|
ftTime: |
| 4026 |
|
|
cur_param.AsTime := cur_field.AsDateTime; |
| 4027 |
|
|
ftDateTime: |
| 4028 |
|
|
cur_param.AsDateTime := cur_field.AsDateTime; |
| 4029 |
|
|
ftBlob, ftMemo: |
| 4030 |
|
|
begin |
| 4031 |
|
|
s := nil; |
| 4032 |
|
|
try |
| 4033 |
|
|
s := DataSource.DataSet. |
| 4034 |
|
|
CreateBlobStream(cur_field, bmRead); |
| 4035 |
tony |
45 |
cur_param.AsBlob := TIBDSBlobStream(s).FBlobStream.Blob; |
| 4036 |
tony |
33 |
finally |
| 4037 |
|
|
s.free; |
| 4038 |
|
|
end; |
| 4039 |
|
|
end; |
| 4040 |
tony |
45 |
ftArray: |
| 4041 |
|
|
cur_param.AsArray := TIBArrayField(cur_field).ArrayIntf; |
| 4042 |
tony |
33 |
else |
| 4043 |
|
|
IBError(ibxeNotSupported, [nil]); |
| 4044 |
|
|
end; |
| 4045 |
|
|
end; |
| 4046 |
|
|
end; |
| 4047 |
|
|
end; |
| 4048 |
|
|
end; |
| 4049 |
|
|
|
| 4050 |
|
|
procedure TIBCustomDataSet.ReQuery; |
| 4051 |
|
|
begin |
| 4052 |
|
|
FQSelect.Close; |
| 4053 |
|
|
ClearBlobCache; |
| 4054 |
|
|
FCurrentRecord := -1; |
| 4055 |
|
|
FRecordCount := 0; |
| 4056 |
|
|
FDeletedRecords := 0; |
| 4057 |
|
|
FBPos := 0; |
| 4058 |
|
|
FOBPos := 0; |
| 4059 |
|
|
FBEnd := 0; |
| 4060 |
|
|
FOBEnd := 0; |
| 4061 |
|
|
FQSelect.Close; |
| 4062 |
|
|
FQSelect.ExecQuery; |
| 4063 |
|
|
FOpen := FQSelect.Open; |
| 4064 |
|
|
First; |
| 4065 |
|
|
end; |
| 4066 |
|
|
|
| 4067 |
|
|
procedure TIBCustomDataSet.InternalOpen; |
| 4068 |
|
|
|
| 4069 |
|
|
function RecordDataLength(n: Integer): Long; |
| 4070 |
|
|
begin |
| 4071 |
|
|
result := SizeOf(TRecordData) + ((n - 1) * SizeOf(TFieldData)); |
| 4072 |
|
|
end; |
| 4073 |
|
|
|
| 4074 |
|
|
begin |
| 4075 |
|
|
FBase.SetCursor; |
| 4076 |
|
|
try |
| 4077 |
|
|
ActivateConnection; |
| 4078 |
|
|
ActivateTransaction; |
| 4079 |
|
|
if FQSelect.SQL.Text = '' then |
| 4080 |
|
|
IBError(ibxeEmptyQuery, [nil]); |
| 4081 |
|
|
if not FInternalPrepared then |
| 4082 |
|
|
InternalPrepare; |
| 4083 |
tony |
45 |
if FQSelect.SQLStatementType = SQLSelect then |
| 4084 |
tony |
33 |
begin |
| 4085 |
|
|
if DefaultFields then |
| 4086 |
|
|
CreateFields; |
| 4087 |
tony |
45 |
FArrayFieldCount := 0; |
| 4088 |
tony |
33 |
BindFields(True); |
| 4089 |
|
|
FCurrentRecord := -1; |
| 4090 |
|
|
FQSelect.ExecQuery; |
| 4091 |
|
|
FOpen := FQSelect.Open; |
| 4092 |
|
|
|
| 4093 |
|
|
{ Initialize offsets, buffer sizes, etc... |
| 4094 |
|
|
1. Initially FRecordSize is just the "RecordDataLength". |
| 4095 |
|
|
2. Allocate a "model" buffer and do a dummy fetch |
| 4096 |
|
|
3. After the dummy fetch, FRecordSize will be appropriately |
| 4097 |
|
|
adjusted to reflect the additional "weight" of the field |
| 4098 |
|
|
data. |
| 4099 |
tony |
45 |
4. Set up the FCalcFieldsOffset, FBlobCacheOffset, FArrayCacheOffset and FRecordBufferSize. |
| 4100 |
tony |
33 |
5. Now, with the BufferSize available, allocate memory for chunks of records |
| 4101 |
|
|
6. Re-allocate the model buffer, accounting for the new |
| 4102 |
|
|
FRecordBufferSize. |
| 4103 |
|
|
7. Finally, calls to AllocRecordBuffer will work!. |
| 4104 |
|
|
} |
| 4105 |
|
|
{Step 1} |
| 4106 |
tony |
45 |
FRecordSize := RecordDataLength(FQSelect.FieldCount); |
| 4107 |
tony |
33 |
{Step 2, 3} |
| 4108 |
tony |
45 |
GetMem(FFieldColumns,sizeof(TFieldColumns) * (FQSelect.FieldCount)); |
| 4109 |
tony |
33 |
IBAlloc(FModelBuffer, 0, FRecordSize); |
| 4110 |
tony |
45 |
InitModelBuffer(FQSelect, FModelBuffer); |
| 4111 |
tony |
33 |
{Step 4} |
| 4112 |
|
|
FCalcFieldsOffset := FRecordSize; |
| 4113 |
|
|
FBlobCacheOffset := FCalcFieldsOffset + CalcFieldsSize; |
| 4114 |
tony |
45 |
FArrayCacheOffset := (FBlobCacheOffset + (BlobFieldCount * SizeOf(TIBBlobStream))); |
| 4115 |
|
|
FRecordBufferSize := FArrayCacheOffset + (ArrayFieldCount * sizeof(IArray)); |
| 4116 |
tony |
33 |
{Step 5} |
| 4117 |
|
|
if UniDirectional then |
| 4118 |
|
|
FBufferChunkSize := FRecordBufferSize * UniCache |
| 4119 |
|
|
else |
| 4120 |
|
|
FBufferChunkSize := FRecordBufferSize * BufferChunks; |
| 4121 |
|
|
IBAlloc(FBufferCache, FBufferChunkSize, FBufferChunkSize); |
| 4122 |
|
|
if FCachedUpdates or (csReading in ComponentState) then |
| 4123 |
|
|
IBAlloc(FOldBufferCache, FBufferChunkSize, FBufferChunkSize); |
| 4124 |
|
|
FBPos := 0; |
| 4125 |
|
|
FOBPos := 0; |
| 4126 |
|
|
FBEnd := 0; |
| 4127 |
|
|
FOBEnd := 0; |
| 4128 |
|
|
FCacheSize := FBufferChunkSize; |
| 4129 |
|
|
FOldCacheSize := FBufferChunkSize; |
| 4130 |
|
|
{Step 6} |
| 4131 |
tony |
45 |
IBAlloc(FModelBuffer, RecordDataLength(FQSelect.FieldCount), |
| 4132 |
tony |
33 |
FRecordBufferSize); |
| 4133 |
|
|
{Step 7} |
| 4134 |
|
|
FOldBuffer := AllocRecordBuffer; |
| 4135 |
|
|
end |
| 4136 |
|
|
else |
| 4137 |
|
|
FQSelect.ExecQuery; |
| 4138 |
|
|
finally |
| 4139 |
|
|
FBase.RestoreCursor; |
| 4140 |
|
|
end; |
| 4141 |
|
|
end; |
| 4142 |
|
|
|
| 4143 |
|
|
procedure TIBCustomDataSet.InternalPost; |
| 4144 |
|
|
var |
| 4145 |
|
|
Qry: TIBSQL; |
| 4146 |
|
|
Buff: PChar; |
| 4147 |
|
|
bInserting: Boolean; |
| 4148 |
|
|
begin |
| 4149 |
|
|
FBase.SetCursor; |
| 4150 |
|
|
try |
| 4151 |
|
|
Buff := GetActiveBuf; |
| 4152 |
|
|
CheckEditState; |
| 4153 |
|
|
AdjustRecordOnInsert(Buff); |
| 4154 |
|
|
if (State = dsInsert) then |
| 4155 |
|
|
begin |
| 4156 |
|
|
bInserting := True; |
| 4157 |
|
|
Qry := FQInsert; |
| 4158 |
|
|
PRecordData(Buff)^.rdUpdateStatus := usInserted; |
| 4159 |
|
|
PRecordData(Buff)^.rdCachedUpdateStatus := cusInserted; |
| 4160 |
|
|
WriteRecordCache(FRecordCount, Buff); |
| 4161 |
|
|
FCurrentRecord := FRecordCount; |
| 4162 |
|
|
end |
| 4163 |
|
|
else begin |
| 4164 |
|
|
bInserting := False; |
| 4165 |
|
|
Qry := FQModify; |
| 4166 |
|
|
if PRecordData(Buff)^.rdCachedUpdateStatus = cusUnmodified then |
| 4167 |
|
|
begin |
| 4168 |
|
|
PRecordData(Buff)^.rdUpdateStatus := usModified; |
| 4169 |
|
|
PRecordData(Buff)^.rdCachedUpdateStatus := cusModified; |
| 4170 |
|
|
end |
| 4171 |
|
|
else if PRecordData(Buff)^. |
| 4172 |
|
|
rdCachedUpdateStatus = cusUninserted then |
| 4173 |
|
|
begin |
| 4174 |
|
|
PRecordData(Buff)^.rdCachedUpdateStatus := cusInserted; |
| 4175 |
|
|
Dec(FDeletedRecords); |
| 4176 |
|
|
end; |
| 4177 |
|
|
end; |
| 4178 |
|
|
if (not CachedUpdates) then |
| 4179 |
|
|
InternalPostRecord(Qry, Buff) |
| 4180 |
|
|
else begin |
| 4181 |
|
|
WriteRecordCache(PRecordData(Buff)^.rdRecordNumber, Buff); |
| 4182 |
|
|
FUpdatesPending := True; |
| 4183 |
|
|
end; |
| 4184 |
|
|
if bInserting then |
| 4185 |
|
|
Inc(FRecordCount); |
| 4186 |
|
|
finally |
| 4187 |
|
|
FBase.RestoreCursor; |
| 4188 |
|
|
end; |
| 4189 |
|
|
end; |
| 4190 |
|
|
|
| 4191 |
|
|
procedure TIBCustomDataSet.InternalRefresh; |
| 4192 |
|
|
begin |
| 4193 |
|
|
inherited InternalRefresh; |
| 4194 |
|
|
InternalRefreshRow; |
| 4195 |
|
|
end; |
| 4196 |
|
|
|
| 4197 |
|
|
procedure TIBCustomDataSet.InternalSetToRecord(Buffer: PChar); |
| 4198 |
|
|
begin |
| 4199 |
|
|
InternalGotoBookmark(@(PRecordData(Buffer)^.rdRecordNumber)); |
| 4200 |
|
|
end; |
| 4201 |
|
|
|
| 4202 |
|
|
function TIBCustomDataSet.IsCursorOpen: Boolean; |
| 4203 |
|
|
begin |
| 4204 |
|
|
result := FOpen; |
| 4205 |
|
|
end; |
| 4206 |
|
|
|
| 4207 |
|
|
procedure TIBCustomDataSet.Loaded; |
| 4208 |
|
|
begin |
| 4209 |
|
|
if assigned(FQSelect) then |
| 4210 |
|
|
FBaseSQLSelect.assign(FQSelect.SQL); |
| 4211 |
|
|
inherited Loaded; |
| 4212 |
|
|
end; |
| 4213 |
|
|
|
| 4214 |
|
|
procedure TIBCustomDataSet.Post; |
| 4215 |
|
|
var CancelPost: boolean; |
| 4216 |
|
|
begin |
| 4217 |
|
|
CancelPost := false; |
| 4218 |
|
|
if assigned(FOnValidatePost) then |
| 4219 |
|
|
OnValidatePost(self,CancelPost); |
| 4220 |
|
|
if CancelPost then |
| 4221 |
|
|
Cancel |
| 4222 |
|
|
else |
| 4223 |
|
|
inherited Post; |
| 4224 |
|
|
end; |
| 4225 |
|
|
|
| 4226 |
|
|
function TIBCustomDataSet.Locate(const KeyFields: string; const KeyValues: Variant; |
| 4227 |
|
|
Options: TLocateOptions): Boolean; |
| 4228 |
|
|
var |
| 4229 |
|
|
CurBookmark: TBookmark; |
| 4230 |
|
|
begin |
| 4231 |
|
|
DisableControls; |
| 4232 |
|
|
try |
| 4233 |
|
|
CurBookmark := Bookmark; |
| 4234 |
|
|
First; |
| 4235 |
|
|
result := InternalLocate(KeyFields, KeyValues, Options); |
| 4236 |
|
|
if not result then |
| 4237 |
|
|
Bookmark := CurBookmark; |
| 4238 |
|
|
finally |
| 4239 |
|
|
EnableControls; |
| 4240 |
|
|
end; |
| 4241 |
|
|
end; |
| 4242 |
|
|
|
| 4243 |
|
|
function TIBCustomDataSet.Lookup(const KeyFields: string; const KeyValues: Variant; |
| 4244 |
|
|
const ResultFields: string): Variant; |
| 4245 |
|
|
var |
| 4246 |
|
|
fl: TList; |
| 4247 |
|
|
CurBookmark: TBookmark; |
| 4248 |
|
|
begin |
| 4249 |
|
|
DisableControls; |
| 4250 |
|
|
fl := TList.Create; |
| 4251 |
|
|
CurBookmark := Bookmark; |
| 4252 |
|
|
try |
| 4253 |
|
|
First; |
| 4254 |
|
|
if InternalLocate(KeyFields, KeyValues, []) then |
| 4255 |
|
|
begin |
| 4256 |
|
|
if (ResultFields <> '') then |
| 4257 |
|
|
result := FieldValues[ResultFields] |
| 4258 |
|
|
else |
| 4259 |
|
|
result := NULL; |
| 4260 |
|
|
end |
| 4261 |
|
|
else |
| 4262 |
|
|
result := Null; |
| 4263 |
|
|
finally |
| 4264 |
|
|
Bookmark := CurBookmark; |
| 4265 |
|
|
fl.Free; |
| 4266 |
|
|
EnableControls; |
| 4267 |
|
|
end; |
| 4268 |
|
|
end; |
| 4269 |
|
|
|
| 4270 |
|
|
procedure TIBCustomDataSet.SetBookmarkData(Buffer: PChar; Data: Pointer); |
| 4271 |
|
|
begin |
| 4272 |
|
|
PRecordData(Buffer)^.rdRecordNumber := PInteger(Data)^; |
| 4273 |
|
|
end; |
| 4274 |
|
|
|
| 4275 |
|
|
procedure TIBCustomDataSet.SetBookmarkFlag(Buffer: PChar; Value: TBookmarkFlag); |
| 4276 |
|
|
begin |
| 4277 |
|
|
PRecordData(Buffer)^.rdBookmarkFlag := Value; |
| 4278 |
|
|
end; |
| 4279 |
|
|
|
| 4280 |
|
|
procedure TIBCustomDataSet.SetCachedUpdates(Value: Boolean); |
| 4281 |
|
|
begin |
| 4282 |
|
|
if not Value and FCachedUpdates then |
| 4283 |
|
|
CancelUpdates; |
| 4284 |
|
|
if (not (csReading in ComponentState)) and Value then |
| 4285 |
|
|
CheckDatasetClosed; |
| 4286 |
|
|
FCachedUpdates := Value; |
| 4287 |
|
|
end; |
| 4288 |
|
|
|
| 4289 |
|
|
procedure TIBCustomDataSet.SetDataSource(Value: TDataSource); |
| 4290 |
|
|
begin |
| 4291 |
|
|
if IsLinkedTo(Value) then |
| 4292 |
|
|
IBError(ibxeCircularReference, [nil]); |
| 4293 |
|
|
if FDataLink <> nil then |
| 4294 |
|
|
FDataLink.DataSource := Value; |
| 4295 |
|
|
end; |
| 4296 |
|
|
|
| 4297 |
|
|
procedure TIBCustomDataSet.InternalSetFieldData(Field: TField; Buffer: Pointer); |
| 4298 |
|
|
var |
| 4299 |
|
|
Buff, TmpBuff: PChar; |
| 4300 |
|
|
MappedFieldPos: integer; |
| 4301 |
|
|
begin |
| 4302 |
|
|
Buff := GetActiveBuf; |
| 4303 |
|
|
if Field.FieldNo < 0 then |
| 4304 |
|
|
begin |
| 4305 |
|
|
TmpBuff := Buff + FRecordSize + Field.Offset; |
| 4306 |
|
|
Boolean(TmpBuff[0]) := LongBool(Buffer); |
| 4307 |
|
|
if Boolean(TmpBuff[0]) then |
| 4308 |
|
|
Move(Buffer^, TmpBuff[1], Field.DataSize); |
| 4309 |
|
|
WriteRecordCache(PRecordData(Buff)^.rdRecordNumber, Buff); |
| 4310 |
|
|
end |
| 4311 |
|
|
else begin |
| 4312 |
|
|
CheckEditState; |
| 4313 |
|
|
with PRecordData(Buff)^ do |
| 4314 |
|
|
begin |
| 4315 |
|
|
{ If inserting, Adjust record position } |
| 4316 |
|
|
AdjustRecordOnInsert(Buff); |
| 4317 |
|
|
MappedFieldPos := FMappedFieldPosition[Field.FieldNo - 1]; |
| 4318 |
|
|
if (MappedFieldPos > 0) and |
| 4319 |
|
|
(MappedFieldPos <= rdFieldCount) then |
| 4320 |
tony |
45 |
with rdFields[MappedFieldPos], FFieldColumns^[MappedFieldPos] do |
| 4321 |
tony |
33 |
begin |
| 4322 |
|
|
Field.Validate(Buffer); |
| 4323 |
|
|
if (Buffer = nil) or |
| 4324 |
|
|
(Field is TIBStringField) and (PChar(Buffer)[0] = #0) then |
| 4325 |
tony |
45 |
fdIsNull := True |
| 4326 |
|
|
else |
| 4327 |
|
|
begin |
| 4328 |
|
|
Move(Buffer^, Buff[fdDataOfs],fdDataSize); |
| 4329 |
|
|
if (fdDataType = SQL_TEXT) or (fdDataType = SQL_VARYING) then |
| 4330 |
|
|
fdDataLength := StrLen(PChar(Buffer)); |
| 4331 |
|
|
fdIsNull := False; |
| 4332 |
tony |
33 |
if rdUpdateStatus = usUnmodified then |
| 4333 |
|
|
begin |
| 4334 |
|
|
if CachedUpdates then |
| 4335 |
|
|
begin |
| 4336 |
|
|
FUpdatesPending := True; |
| 4337 |
|
|
if State = dsInsert then |
| 4338 |
|
|
rdCachedUpdateStatus := cusInserted |
| 4339 |
|
|
else if State = dsEdit then |
| 4340 |
|
|
rdCachedUpdateStatus := cusModified; |
| 4341 |
|
|
end; |
| 4342 |
|
|
|
| 4343 |
|
|
if State = dsInsert then |
| 4344 |
|
|
rdUpdateStatus := usInserted |
| 4345 |
|
|
else |
| 4346 |
|
|
rdUpdateStatus := usModified; |
| 4347 |
|
|
end; |
| 4348 |
|
|
WriteRecordCache(rdRecordNumber, Buff); |
| 4349 |
|
|
SetModified(True); |
| 4350 |
|
|
end; |
| 4351 |
|
|
end; |
| 4352 |
|
|
end; |
| 4353 |
|
|
end; |
| 4354 |
|
|
if not (State in [dsCalcFields, dsFilter, dsNewValue]) then |
| 4355 |
|
|
DataEvent(deFieldChange, PtrInt(Field)); |
| 4356 |
|
|
end; |
| 4357 |
|
|
|
| 4358 |
|
|
procedure TIBCustomDataSet.SetRecNo(Value: Integer); |
| 4359 |
|
|
begin |
| 4360 |
|
|
CheckBrowseMode; |
| 4361 |
|
|
if (Value < 1) then |
| 4362 |
|
|
Value := 1 |
| 4363 |
|
|
else if Value > FRecordCount then |
| 4364 |
|
|
begin |
| 4365 |
|
|
InternalLast; |
| 4366 |
|
|
Value := Min(FRecordCount, Value); |
| 4367 |
|
|
end; |
| 4368 |
|
|
if (Value <> RecNo) then |
| 4369 |
|
|
begin |
| 4370 |
|
|
DoBeforeScroll; |
| 4371 |
|
|
FCurrentRecord := Value - 1; |
| 4372 |
|
|
Resync([]); |
| 4373 |
|
|
DoAfterScroll; |
| 4374 |
|
|
end; |
| 4375 |
|
|
end; |
| 4376 |
|
|
|
| 4377 |
|
|
procedure TIBCustomDataSet.Disconnect; |
| 4378 |
|
|
begin |
| 4379 |
|
|
Close; |
| 4380 |
|
|
InternalUnPrepare; |
| 4381 |
|
|
end; |
| 4382 |
|
|
|
| 4383 |
|
|
procedure TIBCustomDataSet.SetUpdateMode(const Value: TUpdateMode); |
| 4384 |
|
|
begin |
| 4385 |
|
|
if not CanModify then |
| 4386 |
|
|
IBError(ibxeCannotUpdate, [nil]) |
| 4387 |
|
|
else |
| 4388 |
|
|
FUpdateMode := Value; |
| 4389 |
|
|
end; |
| 4390 |
|
|
|
| 4391 |
|
|
|
| 4392 |
|
|
procedure TIBCustomDataSet.SetUpdateObject(Value: TIBDataSetUpdateObject); |
| 4393 |
|
|
begin |
| 4394 |
|
|
if Value <> FUpdateObject then |
| 4395 |
|
|
begin |
| 4396 |
|
|
if Assigned(FUpdateObject) and (FUpdateObject.DataSet = Self) then |
| 4397 |
|
|
FUpdateObject.DataSet := nil; |
| 4398 |
|
|
FUpdateObject := Value; |
| 4399 |
|
|
if Assigned(FUpdateObject) then |
| 4400 |
|
|
begin |
| 4401 |
|
|
if Assigned(FUpdateObject.DataSet) and |
| 4402 |
|
|
(FUpdateObject.DataSet <> Self) then |
| 4403 |
|
|
FUpdateObject.DataSet.UpdateObject := nil; |
| 4404 |
|
|
FUpdateObject.DataSet := Self; |
| 4405 |
|
|
end; |
| 4406 |
|
|
end; |
| 4407 |
|
|
end; |
| 4408 |
|
|
|
| 4409 |
|
|
function TIBCustomDataSet.ConstraintsStored: Boolean; |
| 4410 |
|
|
begin |
| 4411 |
|
|
Result := Constraints.Count > 0; |
| 4412 |
|
|
end; |
| 4413 |
|
|
|
| 4414 |
|
|
procedure TIBCustomDataSet.ClearCalcFields(Buffer: PChar); |
| 4415 |
|
|
begin |
| 4416 |
|
|
FillChar(Buffer[FRecordSize], CalcFieldsSize, 0); |
| 4417 |
|
|
end; |
| 4418 |
|
|
|
| 4419 |
|
|
procedure TIBCustomDataSet.ClearIBLinks; |
| 4420 |
|
|
var i: integer; |
| 4421 |
|
|
begin |
| 4422 |
|
|
for i := FIBLinks.Count - 1 downto 0 do |
| 4423 |
|
|
TIBControlLink(FIBLinks[i]).IBDataSet := nil; |
| 4424 |
|
|
end; |
| 4425 |
|
|
|
| 4426 |
|
|
|
| 4427 |
|
|
procedure TIBCustomDataSet.InternalUnPrepare; |
| 4428 |
|
|
begin |
| 4429 |
|
|
if FInternalPrepared then |
| 4430 |
|
|
begin |
| 4431 |
|
|
CheckDatasetClosed; |
| 4432 |
tony |
45 |
if FDidActivate then |
| 4433 |
|
|
DeactivateTransaction; |
| 4434 |
tony |
33 |
FieldDefs.Clear; |
| 4435 |
|
|
FieldDefs.Updated := false; |
| 4436 |
|
|
FInternalPrepared := False; |
| 4437 |
|
|
Setlength(FAliasNameList,0); |
| 4438 |
|
|
end; |
| 4439 |
|
|
end; |
| 4440 |
|
|
|
| 4441 |
|
|
procedure TIBCustomDataSet.InternalExecQuery; |
| 4442 |
|
|
var |
| 4443 |
|
|
DidActivate: Boolean; |
| 4444 |
|
|
begin |
| 4445 |
|
|
DidActivate := False; |
| 4446 |
|
|
FBase.SetCursor; |
| 4447 |
|
|
try |
| 4448 |
|
|
ActivateConnection; |
| 4449 |
|
|
DidActivate := ActivateTransaction; |
| 4450 |
|
|
if FQSelect.SQL.Text = '' then |
| 4451 |
|
|
IBError(ibxeEmptyQuery, [nil]); |
| 4452 |
|
|
if not FInternalPrepared then |
| 4453 |
|
|
InternalPrepare; |
| 4454 |
tony |
45 |
if FQSelect.SQLStatementType = SQLSelect then |
| 4455 |
tony |
33 |
begin |
| 4456 |
|
|
IBError(ibxeIsASelectStatement, [nil]); |
| 4457 |
|
|
end |
| 4458 |
|
|
else |
| 4459 |
|
|
FQSelect.ExecQuery; |
| 4460 |
|
|
finally |
| 4461 |
|
|
if DidActivate then |
| 4462 |
|
|
DeactivateTransaction; |
| 4463 |
|
|
FBase.RestoreCursor; |
| 4464 |
|
|
end; |
| 4465 |
|
|
end; |
| 4466 |
|
|
|
| 4467 |
tony |
45 |
function TIBCustomDataSet.GetSelectStmtIntf: IStatement; |
| 4468 |
tony |
33 |
begin |
| 4469 |
tony |
45 |
Result := FQSelect.Statement; |
| 4470 |
tony |
33 |
end; |
| 4471 |
|
|
|
| 4472 |
|
|
function TIBCustomDataSet.GetParser: TSelectSQLParser; |
| 4473 |
|
|
begin |
| 4474 |
|
|
if not assigned(FParser) then |
| 4475 |
|
|
FParser := CreateParser; |
| 4476 |
|
|
Result := FParser |
| 4477 |
|
|
end; |
| 4478 |
|
|
|
| 4479 |
|
|
procedure TIBCustomDataSet.ResetParser; |
| 4480 |
|
|
begin |
| 4481 |
|
|
if assigned(FParser) then |
| 4482 |
|
|
begin |
| 4483 |
|
|
FParser.Free; |
| 4484 |
|
|
FParser := nil; |
| 4485 |
tony |
35 |
FQSelect.OnSQLChanged := nil; {Do not react to change} |
| 4486 |
|
|
try |
| 4487 |
|
|
FQSelect.SQL.Assign(FBaseSQLSelect); |
| 4488 |
|
|
finally |
| 4489 |
|
|
FQSelect.OnSQLChanged := SQLChanged; |
| 4490 |
|
|
end; |
| 4491 |
tony |
33 |
end; |
| 4492 |
|
|
end; |
| 4493 |
|
|
|
| 4494 |
|
|
function TIBCustomDataSet.HasParser: boolean; |
| 4495 |
|
|
begin |
| 4496 |
|
|
Result := not (csDesigning in ComponentState) and (FParser <> nil) |
| 4497 |
|
|
end; |
| 4498 |
|
|
|
| 4499 |
|
|
procedure TIBCustomDataSet.SetGenerateParamNames(AValue: Boolean); |
| 4500 |
|
|
begin |
| 4501 |
|
|
if FGenerateParamNames = AValue then Exit; |
| 4502 |
|
|
FGenerateParamNames := AValue; |
| 4503 |
|
|
Disconnect |
| 4504 |
|
|
end; |
| 4505 |
|
|
|
| 4506 |
|
|
procedure TIBCustomDataSet.InitRecord(Buffer: PChar); |
| 4507 |
|
|
begin |
| 4508 |
|
|
inherited InitRecord(Buffer); |
| 4509 |
|
|
with PRecordData(Buffer)^ do |
| 4510 |
|
|
begin |
| 4511 |
|
|
rdUpdateStatus := TUpdateStatus(usInserted); |
| 4512 |
|
|
rdBookMarkFlag := bfInserted; |
| 4513 |
|
|
rdRecordNumber := -1; |
| 4514 |
|
|
end; |
| 4515 |
|
|
end; |
| 4516 |
|
|
|
| 4517 |
|
|
procedure TIBCustomDataSet.InternalInsert; |
| 4518 |
|
|
begin |
| 4519 |
|
|
CursorPosChanged; |
| 4520 |
|
|
end; |
| 4521 |
|
|
|
| 4522 |
|
|
{ TIBDataSet IProviderSupport } |
| 4523 |
|
|
|
| 4524 |
tony |
45 |
procedure TIBCustomDataSet.PSEndTransaction(Commit: Boolean); |
| 4525 |
tony |
33 |
begin |
| 4526 |
|
|
if Commit then |
| 4527 |
|
|
Transaction.Commit else |
| 4528 |
|
|
Transaction.Rollback; |
| 4529 |
|
|
end; |
| 4530 |
|
|
|
| 4531 |
|
|
function TIBCustomDataSet.PSExecuteStatement(const ASQL: string; AParams: TParams; |
| 4532 |
|
|
ResultSet: Pointer = nil): Integer; |
| 4533 |
|
|
var |
| 4534 |
|
|
FQuery: TIBQuery; |
| 4535 |
|
|
begin |
| 4536 |
|
|
if Assigned(ResultSet) then |
| 4537 |
|
|
begin |
| 4538 |
|
|
TDataSet(ResultSet^) := TIBQuery.Create(nil); |
| 4539 |
|
|
with TIBQuery(ResultSet^) do |
| 4540 |
|
|
begin |
| 4541 |
|
|
SQL.Text := ASQL; |
| 4542 |
|
|
Params.Assign(AParams); |
| 4543 |
|
|
Open; |
| 4544 |
|
|
Result := RowsAffected; |
| 4545 |
|
|
end; |
| 4546 |
|
|
end |
| 4547 |
|
|
else |
| 4548 |
|
|
begin |
| 4549 |
|
|
FQuery := TIBQuery.Create(nil); |
| 4550 |
|
|
try |
| 4551 |
|
|
FQuery.Database := Database; |
| 4552 |
|
|
FQuery.Transaction := Transaction; |
| 4553 |
|
|
FQuery.GenerateParamNames := True; |
| 4554 |
|
|
FQuery.SQL.Text := ASQL; |
| 4555 |
|
|
FQuery.Params.Assign(AParams); |
| 4556 |
|
|
FQuery.ExecSQL; |
| 4557 |
|
|
Result := FQuery.RowsAffected; |
| 4558 |
|
|
finally |
| 4559 |
|
|
FQuery.Free; |
| 4560 |
|
|
end; |
| 4561 |
|
|
end; |
| 4562 |
|
|
end; |
| 4563 |
|
|
|
| 4564 |
|
|
function TIBCustomDataSet.PSGetQuoteChar: string; |
| 4565 |
|
|
begin |
| 4566 |
|
|
if Database.SQLDialect = 3 then |
| 4567 |
|
|
Result := '"' else |
| 4568 |
|
|
Result := ''; |
| 4569 |
|
|
end; |
| 4570 |
|
|
|
| 4571 |
|
|
function TIBCustomDataSet.PSGetUpdateException(E: Exception; Prev: EUpdateError): EUpdateError; |
| 4572 |
|
|
var |
| 4573 |
|
|
PrevErr: Integer; |
| 4574 |
|
|
begin |
| 4575 |
|
|
if Prev <> nil then |
| 4576 |
|
|
PrevErr := Prev.ErrorCode else |
| 4577 |
|
|
PrevErr := 0; |
| 4578 |
|
|
if E is EIBError then |
| 4579 |
|
|
with EIBError(E) do |
| 4580 |
|
|
Result := EUpdateError.Create(E.Message, '', SQLCode, PrevErr, E) else |
| 4581 |
|
|
Result := inherited PSGetUpdateException(E, Prev); |
| 4582 |
|
|
end; |
| 4583 |
|
|
|
| 4584 |
|
|
function TIBCustomDataSet.PSInTransaction: Boolean; |
| 4585 |
|
|
begin |
| 4586 |
|
|
Result := Transaction.InTransaction; |
| 4587 |
|
|
end; |
| 4588 |
|
|
|
| 4589 |
|
|
function TIBCustomDataSet.PSIsSQLBased: Boolean; |
| 4590 |
|
|
begin |
| 4591 |
|
|
Result := True; |
| 4592 |
|
|
end; |
| 4593 |
|
|
|
| 4594 |
|
|
function TIBCustomDataSet.PSIsSQLSupported: Boolean; |
| 4595 |
|
|
begin |
| 4596 |
|
|
Result := True; |
| 4597 |
|
|
end; |
| 4598 |
|
|
|
| 4599 |
|
|
procedure TIBCustomDataSet.PSReset; |
| 4600 |
|
|
begin |
| 4601 |
|
|
inherited PSReset; |
| 4602 |
|
|
if Active then |
| 4603 |
|
|
begin |
| 4604 |
|
|
Close; |
| 4605 |
|
|
Open; |
| 4606 |
|
|
end; |
| 4607 |
|
|
end; |
| 4608 |
|
|
|
| 4609 |
|
|
function TIBCustomDataSet.PSUpdateRecord(UpdateKind: TUpdateKind; Delta: TDataSet): Boolean; |
| 4610 |
|
|
var |
| 4611 |
|
|
UpdateAction: TIBUpdateAction; |
| 4612 |
|
|
SQL: string; |
| 4613 |
|
|
Params: TParams; |
| 4614 |
|
|
|
| 4615 |
|
|
procedure AssignParams(DataSet: TDataSet; Params: TParams); |
| 4616 |
|
|
var |
| 4617 |
|
|
I: Integer; |
| 4618 |
|
|
Old: Boolean; |
| 4619 |
|
|
Param: TParam; |
| 4620 |
|
|
PName: string; |
| 4621 |
|
|
Field: TField; |
| 4622 |
|
|
Value: Variant; |
| 4623 |
|
|
begin |
| 4624 |
|
|
for I := 0 to Params.Count - 1 do |
| 4625 |
|
|
begin |
| 4626 |
|
|
Param := Params[I]; |
| 4627 |
|
|
PName := Param.Name; |
| 4628 |
|
|
Old := CompareText(Copy(PName, 1, 4), 'OLD_') = 0; {do not localize} |
| 4629 |
|
|
if Old then System.Delete(PName, 1, 4); |
| 4630 |
|
|
Field := DataSet.FindField(PName); |
| 4631 |
|
|
if not Assigned(Field) then Continue; |
| 4632 |
|
|
if Old then Param.AssignFieldValue(Field, Field.OldValue) else |
| 4633 |
|
|
begin |
| 4634 |
|
|
Value := Field.NewValue; |
| 4635 |
|
|
if VarIsEmpty(Value) then Value := Field.OldValue; |
| 4636 |
|
|
Param.AssignFieldValue(Field, Value); |
| 4637 |
|
|
end; |
| 4638 |
|
|
end; |
| 4639 |
|
|
end; |
| 4640 |
|
|
|
| 4641 |
|
|
begin |
| 4642 |
|
|
Result := False; |
| 4643 |
|
|
if Assigned(OnUpdateRecord) then |
| 4644 |
|
|
begin |
| 4645 |
|
|
UpdateAction := uaFail; |
| 4646 |
|
|
if Assigned(FOnUpdateRecord) then |
| 4647 |
|
|
begin |
| 4648 |
|
|
FOnUpdateRecord(Delta, UpdateKind, UpdateAction); |
| 4649 |
|
|
Result := UpdateAction = uaApplied; |
| 4650 |
|
|
end; |
| 4651 |
|
|
end |
| 4652 |
|
|
else if Assigned(FUpdateObject) then |
| 4653 |
|
|
begin |
| 4654 |
|
|
SQL := FUpdateObject.GetSQL(UpdateKind).Text; |
| 4655 |
|
|
if SQL <> '' then |
| 4656 |
|
|
begin |
| 4657 |
|
|
Params := TParams.Create; |
| 4658 |
|
|
try |
| 4659 |
|
|
Params.ParseSQL(SQL, True); |
| 4660 |
|
|
AssignParams(Delta, Params); |
| 4661 |
|
|
if PSExecuteStatement(SQL, Params) = 0 then |
| 4662 |
|
|
IBError(ibxeNoRecordsAffected, [nil]); |
| 4663 |
|
|
Result := True; |
| 4664 |
|
|
finally |
| 4665 |
|
|
Params.Free; |
| 4666 |
|
|
end; |
| 4667 |
|
|
end; |
| 4668 |
|
|
end; |
| 4669 |
|
|
end; |
| 4670 |
|
|
|
| 4671 |
|
|
procedure TIBCustomDataSet.PSStartTransaction; |
| 4672 |
|
|
begin |
| 4673 |
|
|
ActivateConnection; |
| 4674 |
|
|
Transaction.StartTransaction; |
| 4675 |
|
|
end; |
| 4676 |
|
|
|
| 4677 |
|
|
function TIBCustomDataSet.PSGetTableName: string; |
| 4678 |
|
|
begin |
| 4679 |
|
|
// if not FInternalPrepared then |
| 4680 |
|
|
// InternalPrepare; |
| 4681 |
|
|
{ It is possible for the FQSelectSQL to be unprepared |
| 4682 |
|
|
with FInternalPreprepared being true (see DoBeforeTransactionEnd). |
| 4683 |
|
|
So check the Prepared of the SelectSQL instead } |
| 4684 |
|
|
if not FQSelect.Prepared then |
| 4685 |
|
|
FQSelect.Prepare; |
| 4686 |
|
|
Result := FQSelect.UniqueRelationName; |
| 4687 |
tony |
45 |
end; |
| 4688 |
tony |
33 |
|
| 4689 |
|
|
procedure TIBDataSet.BatchInput(InputObject: TIBBatchInput); |
| 4690 |
|
|
begin |
| 4691 |
|
|
InternalBatchInput(InputObject); |
| 4692 |
|
|
end; |
| 4693 |
|
|
|
| 4694 |
|
|
procedure TIBDataSet.BatchOutput(OutputObject: TIBBatchOutput); |
| 4695 |
|
|
begin |
| 4696 |
|
|
InternalBatchOutput(OutputObject); |
| 4697 |
|
|
end; |
| 4698 |
|
|
|
| 4699 |
|
|
procedure TIBDataSet.ExecSQL; |
| 4700 |
|
|
begin |
| 4701 |
|
|
InternalExecQuery; |
| 4702 |
|
|
end; |
| 4703 |
|
|
|
| 4704 |
|
|
procedure TIBDataSet.Prepare; |
| 4705 |
|
|
begin |
| 4706 |
|
|
InternalPrepare; |
| 4707 |
|
|
end; |
| 4708 |
|
|
|
| 4709 |
|
|
procedure TIBDataSet.UnPrepare; |
| 4710 |
|
|
begin |
| 4711 |
|
|
InternalUnPrepare; |
| 4712 |
|
|
end; |
| 4713 |
|
|
|
| 4714 |
|
|
function TIBDataSet.GetPrepared: Boolean; |
| 4715 |
|
|
begin |
| 4716 |
|
|
Result := InternalPrepared; |
| 4717 |
|
|
end; |
| 4718 |
|
|
|
| 4719 |
|
|
procedure TIBDataSet.InternalOpen; |
| 4720 |
|
|
begin |
| 4721 |
|
|
ActivateConnection; |
| 4722 |
|
|
ActivateTransaction; |
| 4723 |
|
|
InternalSetParamsFromCursor; |
| 4724 |
|
|
Inherited InternalOpen; |
| 4725 |
|
|
end; |
| 4726 |
|
|
|
| 4727 |
|
|
procedure TIBDataSet.SetFiltered(Value: Boolean); |
| 4728 |
|
|
begin |
| 4729 |
|
|
if(Filtered <> Value) then |
| 4730 |
|
|
begin |
| 4731 |
|
|
inherited SetFiltered(value); |
| 4732 |
|
|
if Active then |
| 4733 |
|
|
begin |
| 4734 |
|
|
Close; |
| 4735 |
|
|
Open; |
| 4736 |
|
|
end; |
| 4737 |
|
|
end |
| 4738 |
|
|
else |
| 4739 |
|
|
inherited SetFiltered(value); |
| 4740 |
|
|
end; |
| 4741 |
|
|
|
| 4742 |
|
|
function TIBCustomDataSet.BookmarkValid(Bookmark: TBookmark): Boolean; |
| 4743 |
|
|
begin |
| 4744 |
|
|
Result := false; |
| 4745 |
|
|
if not Assigned(Bookmark) then |
| 4746 |
|
|
exit; |
| 4747 |
|
|
Result := PInteger(Bookmark)^ < FRecordCount; |
| 4748 |
|
|
end; |
| 4749 |
|
|
|
| 4750 |
|
|
function TIBCustomDataSet.GetFieldData(Field: TField; |
| 4751 |
|
|
Buffer: Pointer): Boolean; |
| 4752 |
|
|
{$IFDEF TBCDFIELD_IS_BCD} |
| 4753 |
|
|
var |
| 4754 |
|
|
lTempCurr : System.Currency; |
| 4755 |
|
|
begin |
| 4756 |
|
|
if (Field.DataType = ftBCD) and (Buffer <> nil) then |
| 4757 |
|
|
begin |
| 4758 |
|
|
Result := InternalGetFieldData(Field, @lTempCurr); |
| 4759 |
|
|
if Result then |
| 4760 |
|
|
CurrToBCD(lTempCurr, TBCD(Buffer^), 32, Field.Size); |
| 4761 |
|
|
end |
| 4762 |
|
|
else |
| 4763 |
|
|
{$ELSE} |
| 4764 |
|
|
begin |
| 4765 |
|
|
{$ENDIF} |
| 4766 |
|
|
Result := InternalGetFieldData(Field, Buffer); |
| 4767 |
|
|
end; |
| 4768 |
|
|
|
| 4769 |
|
|
function TIBCustomDataSet.GetFieldData(Field: TField; Buffer: Pointer; |
| 4770 |
|
|
NativeFormat: Boolean): Boolean; |
| 4771 |
|
|
begin |
| 4772 |
|
|
if (Field.DataType = ftBCD) and not NativeFormat then |
| 4773 |
|
|
Result := InternalGetFieldData(Field, Buffer) |
| 4774 |
|
|
else |
| 4775 |
|
|
Result := inherited GetFieldData(Field, Buffer, NativeFormat); |
| 4776 |
|
|
end; |
| 4777 |
|
|
|
| 4778 |
|
|
procedure TIBCustomDataSet.SetFieldData(Field: TField; Buffer: Pointer); |
| 4779 |
|
|
{$IFDEF TDBDFIELD_IS_BCD} |
| 4780 |
|
|
var |
| 4781 |
|
|
lTempCurr : System.Currency; |
| 4782 |
|
|
begin |
| 4783 |
|
|
if (Field.DataType = ftBCD) and (Buffer <> nil) then |
| 4784 |
|
|
begin |
| 4785 |
|
|
BCDToCurr(TBCD(Buffer^), lTempCurr); |
| 4786 |
|
|
InternalSetFieldData(Field, @lTempCurr); |
| 4787 |
|
|
end |
| 4788 |
|
|
else |
| 4789 |
|
|
{$ELSE} |
| 4790 |
|
|
begin |
| 4791 |
|
|
{$ENDIF} |
| 4792 |
|
|
InternalSetFieldData(Field, Buffer); |
| 4793 |
|
|
end; |
| 4794 |
|
|
|
| 4795 |
|
|
procedure TIBCustomDataSet.SetFieldData(Field: TField; Buffer: Pointer; |
| 4796 |
|
|
NativeFormat: Boolean); |
| 4797 |
|
|
begin |
| 4798 |
|
|
if (not NativeFormat) and (Field.DataType = ftBCD) then |
| 4799 |
|
|
InternalSetfieldData(Field, Buffer) |
| 4800 |
|
|
else |
| 4801 |
|
|
inherited SetFieldData(Field, buffer, NativeFormat); |
| 4802 |
|
|
end; |
| 4803 |
|
|
|
| 4804 |
|
|
{ TIBDataSetUpdateObject } |
| 4805 |
|
|
|
| 4806 |
|
|
constructor TIBDataSetUpdateObject.Create(AOwner: TComponent); |
| 4807 |
|
|
begin |
| 4808 |
|
|
inherited Create(AOwner); |
| 4809 |
|
|
FRefreshSQL := TStringList.Create; |
| 4810 |
|
|
end; |
| 4811 |
|
|
|
| 4812 |
|
|
destructor TIBDataSetUpdateObject.Destroy; |
| 4813 |
|
|
begin |
| 4814 |
|
|
FRefreshSQL.Free; |
| 4815 |
|
|
inherited Destroy; |
| 4816 |
|
|
end; |
| 4817 |
|
|
|
| 4818 |
|
|
procedure TIBDataSetUpdateObject.SetRefreshSQL(Value: TStrings); |
| 4819 |
|
|
begin |
| 4820 |
|
|
FRefreshSQL.Assign(Value); |
| 4821 |
|
|
end; |
| 4822 |
|
|
|
| 4823 |
|
|
procedure TIBDataSetUpdateObject.InternalSetParams(Query: TIBSQL; buff: PChar); |
| 4824 |
|
|
begin |
| 4825 |
|
|
if not Assigned(DataSet) then Exit; |
| 4826 |
|
|
DataSet.SetInternalSQLParams(Query, buff); |
| 4827 |
|
|
end; |
| 4828 |
|
|
|
| 4829 |
tony |
41 |
function TIBDSBlobStream.GetSize: Int64; |
| 4830 |
|
|
begin |
| 4831 |
|
|
Result := FBlobStream.BlobSize; |
| 4832 |
|
|
end; |
| 4833 |
|
|
|
| 4834 |
tony |
33 |
{ TIBDSBlobStream } |
| 4835 |
|
|
constructor TIBDSBlobStream.Create(AField: TField; ABlobStream: TIBBlobStream; |
| 4836 |
|
|
Mode: TBlobStreamMode); |
| 4837 |
|
|
begin |
| 4838 |
|
|
FField := AField; |
| 4839 |
|
|
FBlobStream := ABlobStream; |
| 4840 |
|
|
FBlobStream.Seek(0, soFromBeginning); |
| 4841 |
|
|
if (Mode = bmWrite) then |
| 4842 |
tony |
41 |
begin |
| 4843 |
tony |
33 |
FBlobStream.Truncate; |
| 4844 |
tony |
41 |
TIBCustomDataSet(FField.DataSet).RecordModified(True); |
| 4845 |
|
|
TBlobField(FField).Modified := true; |
| 4846 |
|
|
FHasWritten := true; |
| 4847 |
|
|
end; |
| 4848 |
tony |
33 |
end; |
| 4849 |
|
|
|
| 4850 |
|
|
destructor TIBDSBlobStream.Destroy; |
| 4851 |
|
|
begin |
| 4852 |
|
|
if FHasWritten then |
| 4853 |
|
|
TIBCustomDataSet(FField.DataSet).DataEvent(deFieldChange, PtrInt(FField)); |
| 4854 |
|
|
inherited Destroy; |
| 4855 |
|
|
end; |
| 4856 |
|
|
|
| 4857 |
|
|
function TIBDSBlobStream.Read(var Buffer; Count: Longint): Longint; |
| 4858 |
|
|
begin |
| 4859 |
|
|
result := FBlobStream.Read(Buffer, Count); |
| 4860 |
|
|
end; |
| 4861 |
|
|
|
| 4862 |
|
|
function TIBDSBlobStream.Seek(Offset: Longint; Origin: Word): Longint; |
| 4863 |
|
|
begin |
| 4864 |
|
|
result := FBlobStream.Seek(Offset, Origin); |
| 4865 |
|
|
end; |
| 4866 |
|
|
|
| 4867 |
|
|
procedure TIBDSBlobStream.SetSize(NewSize: Longint); |
| 4868 |
|
|
begin |
| 4869 |
|
|
FBlobStream.SetSize(NewSize); |
| 4870 |
|
|
end; |
| 4871 |
|
|
|
| 4872 |
|
|
function TIBDSBlobStream.Write(const Buffer; Count: Longint): Longint; |
| 4873 |
|
|
begin |
| 4874 |
|
|
if not (FField.DataSet.State in [dsEdit, dsInsert]) then |
| 4875 |
|
|
IBError(ibxeNotEditing, [nil]); |
| 4876 |
|
|
TIBCustomDataSet(FField.DataSet).RecordModified(True); |
| 4877 |
|
|
TBlobField(FField).Modified := true; |
| 4878 |
|
|
result := FBlobStream.Write(Buffer, Count); |
| 4879 |
|
|
FHasWritten := true; |
| 4880 |
|
|
{ TIBCustomDataSet(FField.DataSet).DataEvent(deFieldChange, PtrInt(FField)); |
| 4881 |
|
|
Removed as this caused a seek to beginning of the blob stream thus corrupting |
| 4882 |
|
|
the blob stream. Moved to the destructor i.e. called after blob written} |
| 4883 |
|
|
end; |
| 4884 |
|
|
|
| 4885 |
|
|
{ TIBGenerator } |
| 4886 |
|
|
|
| 4887 |
|
|
procedure TIBGenerator.SetIncrement(const AValue: integer); |
| 4888 |
|
|
begin |
| 4889 |
|
|
if AValue < 0 then |
| 4890 |
|
|
raise Exception.Create('A Generator Increment cannot be negative'); |
| 4891 |
|
|
FIncrement := AValue |
| 4892 |
|
|
end; |
| 4893 |
|
|
|
| 4894 |
|
|
function TIBGenerator.GetNextValue(ADatabase: TIBDatabase; |
| 4895 |
|
|
ATransaction: TIBTransaction): integer; |
| 4896 |
|
|
begin |
| 4897 |
|
|
with TIBSQL.Create(nil) do |
| 4898 |
|
|
try |
| 4899 |
|
|
Database := ADatabase; |
| 4900 |
|
|
Transaction := ATransaction; |
| 4901 |
|
|
if not assigned(Database) then |
| 4902 |
|
|
IBError(ibxeCannotSetDatabase,[]); |
| 4903 |
|
|
if not assigned(Transaction) then |
| 4904 |
|
|
IBError(ibxeCannotSetTransaction,[]); |
| 4905 |
|
|
with Transaction do |
| 4906 |
|
|
if not InTransaction then StartTransaction; |
| 4907 |
|
|
SQL.Text := Format('Select Gen_ID(%s,%d) as ID From RDB$Database',[FGeneratorName,Increment]); |
| 4908 |
|
|
Prepare; |
| 4909 |
|
|
ExecQuery; |
| 4910 |
|
|
try |
| 4911 |
|
|
Result := FieldByName('ID').AsInteger |
| 4912 |
|
|
finally |
| 4913 |
|
|
Close |
| 4914 |
|
|
end; |
| 4915 |
|
|
finally |
| 4916 |
|
|
Free |
| 4917 |
|
|
end; |
| 4918 |
|
|
end; |
| 4919 |
|
|
|
| 4920 |
|
|
constructor TIBGenerator.Create(Owner: TIBCustomDataSet); |
| 4921 |
|
|
begin |
| 4922 |
|
|
FOwner := Owner; |
| 4923 |
|
|
FIncrement := 1; |
| 4924 |
|
|
end; |
| 4925 |
|
|
|
| 4926 |
|
|
|
| 4927 |
|
|
procedure TIBGenerator.Apply; |
| 4928 |
|
|
begin |
| 4929 |
|
|
if (FGeneratorName <> '') and (FFieldName <> '') and Owner.FieldByName(FFieldName).IsNull then |
| 4930 |
|
|
Owner.FieldByName(FFieldName).AsInteger := GetNextValue(Owner.Database,Owner.Transaction); |
| 4931 |
|
|
end; |
| 4932 |
|
|
|
| 4933 |
tony |
35 |
|
| 4934 |
tony |
33 |
end. |
