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(*
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* IBX For Lazarus (Firebird Express)
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*
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* The contents of this file are subject to the Initial Developer's
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* Public License Version 1.0 (the "License"); you may not use this
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* file except in compliance with the License. You may obtain a copy
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* of the License here:
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*
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* http://www.firebirdsql.org/index.php?op=doc&id=idpl
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing rights
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* and limitations under the License.
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*
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* The Initial Developer of the Original Code is Tony Whyman.
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*
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* The Original Code is (C) 2015-2020 Tony Whyman, MWA Software
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* (http://www.mwasoftware.co.uk).
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*
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* All Rights Reserved.
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*
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* Contributor(s): ______________________________________.
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*
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*)
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unit IBUpdate;
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{$mode objfpc}{$H+}
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interface
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uses
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Classes, SysUtils, IBCustomDataSet, DB, IB, IBDatabase, IBExternals, IBMessages;
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type
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TOnApplyUpdates = procedure(Sender: TObject; UpdateKind: TUpdateKind; Params: ISQLParams) of object;
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{ TIBUpdate}
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TIBUpdate = class(TIBDataSetUpdateObject)
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private
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FDataSet: TIBCustomDataSet;
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FDummySQL: TStrings;
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FOnApplyUpdates: TOnApplyUpdates;
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protected
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function GetSQL(UpdateKind: TUpdateKind): TStrings; override;
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function GetDataSet: TIBCustomDataSet; override;
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procedure SetDataSet(ADataSet: TIBCustomDataSet); override;
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procedure Apply(UpdateKind: TUpdateKind; buff: PChar); override;
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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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property DataSet;
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published
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property OnApplyUpdates: TOnApplyUpdates read FOnApplyUpdates write FOnApplyUpdates;
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end;
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implementation
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uses variants, FmtBCD, DateUtils;
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type
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{ TParamListIntf }
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TParamListIntf = class(TInterfacedObject,ISQLParams)
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private
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type TParamRec = record
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Name: string;
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Value: variant;
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Modified: boolean;
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TimeZoneID: TFBTimeZoneID;
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DataSet: TDataSet;
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end;
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private
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FDatabase: TIBDatabase;
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FModified: boolean;
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FParams: array of TParamRec;
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procedure SetParam(index: integer; aValue: variant);
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procedure SetTimeZoneID(index: integer; aValue: TFBTimeZoneID);
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public
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constructor Create(aFields: TFields; aDatabase: TIBDatabase);
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destructor Destroy; override;
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property Database: TIBDatabase read FDatabase;
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public
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{ISQLParams}
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function getCount: integer;
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function getSQLParam(index: integer): ISQLParam;
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function ByName(Idx: AnsiString): ISQLParam ;
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function GetModified: Boolean;
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function GetHasCaseSensitiveParams: Boolean;
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end;
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{ TParamIntf }
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TParamIntf = class(TInterfacedObject,ISQLParam)
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private
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FIndex: integer;
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FOwner: TParamListIntf;
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function GetDataSet: TDataSet;
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public
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constructor Create(aOwner: TParamListIntf; aIndex: integer);
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function getColMetadata: IParamMetaData;
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function GetIndex: integer;
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function GetSQLType: cardinal;
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function GetSQLTypeName: AnsiString;
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function getSubtype: integer;
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function getName: AnsiString;
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function getScale: integer;
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function getCharSetID: cardinal;
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function getCodePage: TSystemCodePage;
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function getIsNullable: boolean;
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function GetSize: cardinal;
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function GetAsBoolean: boolean;
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function GetAsCurrency: Currency;
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function GetAsInt64: Int64;
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function GetAsDateTime: TDateTime; overload;
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procedure GetAsDateTime(var aDateTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID); overload;
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procedure GetAsDateTime(var aDateTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString); overload;
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procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID; OnDate: TDateTime); overload;
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procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString; OnDate: TDateTime); overload;
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procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID); overload;
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procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString); overload;
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function GetAsUTCDateTime: TDateTime;
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function GetAsDouble: Double;
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function GetAsFloat: Float;
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function GetAsLong: Long;
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function GetAsPointer: Pointer;
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function GetAsQuad: TISC_QUAD;
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function GetAsShort: short;
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function GetAsString: AnsiString;
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function GetIsNull: boolean;
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function GetAsVariant: Variant;
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function GetAsBlob: IBlob;
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function GetAsArray: IArray;
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function GetAsBCD: tBCD;
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function GetStatement: IStatement;
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function GetTransaction: ITransaction;
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procedure Clear;
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function GetModified: boolean;
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procedure SetAsBoolean(AValue: boolean);
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procedure SetAsCurrency(aValue: Currency);
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procedure SetAsInt64(aValue: Int64);
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procedure SetAsDate(aValue: TDateTime);
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procedure SetAsLong(aValue: Long);
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procedure SetAsTime(aValue: TDateTime); overload;
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procedure SetAsTime(aValue: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
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procedure SetAsTime(aValue: TDateTime; aTimeZone: AnsiString); overload;
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procedure SetAsTime(aValue: TDateTime; OnDate: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
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procedure SetAsTime(aValue: TDateTime; OnDate: TDateTime; aTimeZone: AnsiString); overload;
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procedure SetAsDateTime(aValue: TDateTime); overload;
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procedure SetAsDateTime(aValue: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
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procedure SetAsDateTime(aValue: TDateTime; aTimeZone: AnsiString); overload;
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procedure SetAsUTCDateTime(aUTCTime: TDateTime);
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procedure SetAsDouble(aValue: Double);
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procedure SetAsFloat(aValue: Float);
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procedure SetAsPointer(aValue: Pointer);
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procedure SetAsShort(aValue: Short);
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procedure SetAsString(aValue: AnsiString);
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procedure SetAsVariant(aValue: Variant);
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procedure SetIsNull(aValue: Boolean);
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procedure SetAsBlob(aValue: IBlob);
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procedure SetAsArray(anArray: IArray);
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procedure SetAsQuad(aValue: TISC_QUAD);
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procedure SetCharSetID(aValue: cardinal);
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procedure SetAsBcd(aValue: tBCD);
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end;
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{ TParamIntf }
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function TParamIntf.GetDataSet: TDataSet;
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begin
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Result := FOwner.FParams[FIndex].DataSet;
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end;
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constructor TParamIntf.Create(aOwner: TParamListIntf; aIndex: integer);
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begin
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FOwner := aOwner;
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FIndex := aIndex;
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end;
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function TParamIntf.getColMetadata: IParamMetaData;
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begin
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IBError(ibxeNotSupported,[]);
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end;
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function TParamIntf.GetIndex: integer;
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begin
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Result := Findex;
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end;
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function TParamIntf.GetSQLType: cardinal;
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begin
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IBError(ibxeNotSupported,[]);
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end;
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function TParamIntf.GetSQLTypeName: AnsiString;
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begin
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IBError(ibxeNotSupported,[]);
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end;
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function TParamIntf.getSubtype: integer;
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begin
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IBError(ibxeNotSupported,[]);
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end;
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function TParamIntf.getName: AnsiString;
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begin
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Result := FOwner.FParams[FIndex].Name;
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end;
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function TParamIntf.getScale: integer;
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begin
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IBError(ibxeNotSupported,[]);
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end;
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function TParamIntf.getCharSetID: cardinal;
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var id: integer;
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begin
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FOwner.Database.Attachment.CodePage2CharSetID(StringCodePage(FOwner.FParams[FIndex].Value),id);
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Result := id;
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end;
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function TParamIntf.getCodePage: TSystemCodePage;
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begin
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Result := StringCodePage(FOwner.FParams[FIndex].Value);
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end;
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function TParamIntf.getIsNullable: boolean;
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begin
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Result := true;
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end;
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function TParamIntf.GetSize: cardinal;
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begin
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IBError(ibxeNotSupported,[]);
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end;
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function TParamIntf.GetAsBoolean: boolean;
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begin
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Result := FOwner.FParams[FIndex].Value;
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end;
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function TParamIntf.GetAsCurrency: Currency;
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begin
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Result := FOwner.FParams[FIndex].Value;
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end;
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function TParamIntf.GetAsInt64: Int64;
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begin
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Result := FOwner.FParams[FIndex].Value;
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end;
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function TParamIntf.GetAsDateTime: TDateTime;
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begin
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Result := FOwner.FParams[FIndex].Value;
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end;
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procedure TParamIntf.GetAsDateTime(var aDateTime: TDateTime;
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var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID);
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begin
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with FOwner.FParams[FIndex] do
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if VarIsArray(Value) then
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begin
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aDateTime := Value[0];
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dstOffset := Value[1];
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if VarType(Value[2]) in [varSmallint, varInteger, varByte, varWord, varShortInt] then
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aTimezoneID := Value[2]
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else
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aTimeZoneID := FOwner.DataBase.attachment.GetTimeZoneServices.TimeZoneName2TimeZoneID(Value[2]);
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end
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else
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begin
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aDateTime := FOwner.FParams[FIndex].Value;
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dstOffset := 0;
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aTimeZoneID := TimeZoneID_GMT;
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end;
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end;
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procedure TParamIntf.GetAsDateTime(var aDateTime: TDateTime;
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var dstOffset: smallint; var aTimezone: AnsiString);
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begin
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with FOwner.FParams[FIndex] do
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if VarIsArray(Value) then
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begin
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aDateTime := Value[0];
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dstOffset := Value[1];
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if VarType(Value[2]) in [varSmallint, varInteger, varByte, varWord, varShortInt] then
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aTimeZone := FOwner.DataBase.attachment.GetTimeZoneServices.TimeZoneID2TimeZoneName(Value[2])
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else
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aTimezone := Value[2];
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end
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else
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begin
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aDateTime := FOwner.FParams[FIndex].Value;
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dstOffset := 0;
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aTimeZone := 'GMT';
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end;
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end;
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procedure TParamIntf.GetAsTime(var aTime: TDateTime; var dstOffset: smallint;
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var aTimezoneID: TFBTimeZoneID; OnDate: TDateTime);
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var LocalTime: TDateTime;
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begin
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with FOwner.FParams[FIndex] do
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if VarIsArray(Value) then
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begin
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LocalTime := OnDate + TimeOf(Value[0]);
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dstOffset := Value[1];
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if VarType(Value[2]) in [varSmallint, varInteger, varByte, varWord, varShortInt] then
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aTimezoneID := Value[2]
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else
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aTimeZoneID := FOwner.DataBase.attachment.GetTimeZoneServices.TimeZoneName2TimeZoneID(Value[2]);
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aTime := TimeOf(FOwner.DataBase.attachment.GetTimeZoneServices.GMTToLocalTime(IncMinute(LocalTime,-dstOffset),aTimeZoneID))
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end
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else
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begin
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aTime := FOwner.FParams[FIndex].Value;
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dstOffset := 0;
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aTimeZoneID := TimeZoneID_GMT;
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end;
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end;
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procedure TParamIntf.GetAsTime(var aTime: TDateTime; var dstOffset: smallint;
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var aTimezone: AnsiString; OnDate: TDateTime);
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var LocalTime: TDateTime;
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begin
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with FOwner.FParams[FIndex] do
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if VarIsArray(Value) then
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begin
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LocalTime := OnDate + TimeOf(Value[0]);
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dstOffset := Value[1];
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if VarType(Value[2]) in [varSmallint, varInteger, varByte, varWord, varShortInt] then
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aTimeZone := FOwner.DataBase.attachment.GetTimeZoneServices.TimeZoneID2TimeZoneName(Value[2])
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else
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aTimezone := Value[2];
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aTime := TimeOf(FOwner.DataBase.attachment.GetTimeZoneServices.GMTToLocalTime(IncMinute(LocalTime,-dstOffset),aTimeZone))
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end
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else
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begin
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aTime := FOwner.FParams[FIndex].Value;
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dstOffset := 0;
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aTimeZone := 'GMT';
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end;
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end;
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procedure TParamIntf.GetAsTime(var aTime: TDateTime; var dstOffset: smallint;
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var aTimezoneID: TFBTimeZoneID);
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begin
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GetAsTime(aTime,dstOffset,aTimeZoneID,(GetDataSet as TIBCustomDataSet).DefaultTZDate);
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end;
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procedure TParamIntf.GetAsTime(var aTime: TDateTime; var dstOffset: smallint;
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var aTimezone: AnsiString);
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begin
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GetAsTime(aTime,dstOffset,aTimeZone,(GetDataSet as TIBCustomDataSet).DefaultTZDate);
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end;
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function TParamIntf.GetAsUTCDateTime: TDateTime;
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begin
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with FOwner.FParams[FIndex] do
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if VarIsArray(Value) then
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Result := IncMinute(Value[0],-Value[1])
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else
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Result := FOwner.FParams[FIndex].Value;
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end;
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function TParamIntf.GetAsDouble: Double;
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begin
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Result := FOwner.FParams[FIndex].Value;
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end;
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function TParamIntf.GetAsFloat: Float;
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begin
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Result := FOwner.FParams[FIndex].Value;
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end;
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function TParamIntf.GetAsLong: Long;
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begin
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Result := FOwner.FParams[FIndex].Value;
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end;
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function TParamIntf.GetAsPointer: Pointer;
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begin
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IBError(ibxeNotSupported,[]);
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end;
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function TParamIntf.GetAsQuad: TISC_QUAD;
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begin
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IBError(ibxeNotSupported,[]);
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end;
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function TParamIntf.GetAsShort: short;
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begin
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Result := FOwner.FParams[FIndex].Value;
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end;
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function TParamIntf.GetAsString: AnsiString;
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var v: variant;
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begin
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v := FOwner.FParams[FIndex].Value;
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Case varType(v) of
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varEmpty,
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varNull:
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Result := '';
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varShortInt,
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varSmallint,
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varInteger,
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varInt64,
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varByte,
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varWord,
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varDecimal,
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varLongWord,
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varQWord,
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varSingle:
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Result := IntToStr(v);
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varCurrency,
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varDouble:
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Result := FloatToStr(v);
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varDate:
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Result := DateTimeToStr(v);
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varStrArg,
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varString:
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Result := v;
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varBoolean:
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if v then
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Result := 'true'
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else
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Result := 'false';
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varVariant:
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Result := v;
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else
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Result := v;
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end;
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end;
|
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function TParamIntf.GetIsNull: boolean;
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begin
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Result := VarIsNull(FOwner.FParams[FIndex].Value);
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end;
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444 |
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function TParamIntf.GetAsVariant: Variant;
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begin
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Result := FOwner.FParams[FIndex].Value;
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end;
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449 |
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function TParamIntf.GetAsBlob: IBlob;
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begin
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IBError(ibxeNotSupported,[]);
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end;
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function TParamIntf.GetAsArray: IArray;
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begin
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IBError(ibxeNotSupported,[]);
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end;
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function TParamIntf.GetAsBCD: tBCD;
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begin
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Result := VarToBCD(FOwner.FParams[FIndex].Value);
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end;
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function TParamIntf.GetStatement: IStatement;
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begin
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IBError(ibxeNotSupported,[]);
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end;
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function TParamIntf.GetTransaction: ITransaction;
|
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begin
|
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IBError(ibxeNotSupported,[]);
|
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end;
|
474 |
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procedure TParamIntf.Clear;
|
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begin
|
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FOwner.SetParam(FIndex,NULL);
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end;
|
479 |
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function TParamIntf.GetModified: boolean;
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begin
|
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Result := FOwner.FParams[FIndex].Modified;
|
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end;
|
484 |
|
485 |
procedure TParamIntf.SetAsBoolean(AValue: boolean);
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begin
|
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FOwner.SetParam(FIndex,AValue);
|
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end;
|
489 |
|
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procedure TParamIntf.SetAsCurrency(aValue: Currency);
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begin
|
492 |
FOwner.SetParam(FIndex,AValue);
|
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end;
|
494 |
|
495 |
procedure TParamIntf.SetAsInt64(aValue: Int64);
|
496 |
begin
|
497 |
FOwner.SetParam(FIndex,AValue);
|
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end;
|
499 |
|
500 |
procedure TParamIntf.SetAsDate(aValue: TDateTime);
|
501 |
begin
|
502 |
FOwner.SetParam(FIndex,AValue);
|
503 |
end;
|
504 |
|
505 |
procedure TParamIntf.SetAsLong(aValue: Long);
|
506 |
begin
|
507 |
FOwner.SetParam(FIndex,AValue);
|
508 |
end;
|
509 |
|
510 |
procedure TParamIntf.SetAsTime(aValue: TDateTime);
|
511 |
begin
|
512 |
FOwner.SetParam(FIndex,AValue);
|
513 |
end;
|
514 |
|
515 |
procedure TParamIntf.SetAsTime(aValue: TDateTime; aTimeZoneID: TFBTimeZoneID);
|
516 |
begin
|
517 |
SetAsTime(aValue,(GetDataSet as TIBCustomDataSet).DefaultTZDate,aTimeZoneID);
|
518 |
end;
|
519 |
|
520 |
procedure TParamIntf.SetAsTime(aValue: TDateTime; aTimeZone: AnsiString);
|
521 |
begin
|
522 |
SetAsTime(aValue,(GetDataSet as TIBCustomDataSet).DefaultTZDate,aTimeZone);
|
523 |
end;
|
524 |
|
525 |
procedure TParamIntf.SetAsTime(aValue: TDateTime; OnDate: TDateTime;
|
526 |
aTimeZoneID: TFBTimeZoneID);
|
527 |
var dstOffset: smallint;
|
528 |
begin
|
529 |
aValue := TimeOf(aValue);
|
530 |
dstOffset := FOwner.Database.Attachment.GetTimeZoneServices.GetEffectiveOffsetMins(OnDate + aValue,aTimeZoneID);
|
531 |
FOwner.SetParam(FIndex,VarArrayOf([aValue,dstOffset,aTimeZoneID]));
|
532 |
end;
|
533 |
|
534 |
procedure TParamIntf.SetAsTime(aValue: TDateTime; OnDate: TDateTime;
|
535 |
aTimeZone: AnsiString);
|
536 |
var dstOffset: smallint;
|
537 |
begin
|
538 |
aValue := TimeOf(aValue);
|
539 |
dstOffset := FOwner.Database.Attachment.GetTimeZoneServices.GetEffectiveOffsetMins(OnDate + aValue,aTimeZone);
|
540 |
FOwner.SetParam(FIndex,VarArrayOf([aValue,dstOffset,aTimeZone]));
|
541 |
end;
|
542 |
|
543 |
procedure TParamIntf.SetAsDateTime(aValue: TDateTime);
|
544 |
begin
|
545 |
FOwner.SetParam(FIndex,AValue);
|
546 |
end;
|
547 |
|
548 |
procedure TParamIntf.SetAsDateTime(aValue: TDateTime; aTimeZoneID: TFBTimeZoneID
|
549 |
);
|
550 |
var dstOffset: smallint;
|
551 |
begin
|
552 |
with FOwner.DataBase.attachment.GetTimeZoneServices do
|
553 |
begin
|
554 |
dstOffset := GetEffectiveOffsetMins(aValue,aTimeZoneID);
|
555 |
FOwner.SetParam(FIndex,VarArrayOf([aValue,aTimeZoneID]));
|
556 |
end;
|
557 |
end;
|
558 |
|
559 |
procedure TParamIntf.SetAsDateTime(aValue: TDateTime; aTimeZone: AnsiString);
|
560 |
var dstOffset: smallint;
|
561 |
begin
|
562 |
with FOwner.DataBase.attachment.GetTimeZoneServices do
|
563 |
begin
|
564 |
dstOffset := GetEffectiveOffsetMins(aValue,aTimeZone);
|
565 |
FOwner.SetParam(FIndex,VarArrayOf([aValue,aTimeZone]));
|
566 |
end;
|
567 |
end;
|
568 |
|
569 |
procedure TParamIntf.SetAsUTCDateTime(aUTCTime: TDateTime);
|
570 |
begin
|
571 |
IBError(ibxeNotSupported,[]);
|
572 |
end;
|
573 |
|
574 |
procedure TParamIntf.SetAsDouble(aValue: Double);
|
575 |
begin
|
576 |
FOwner.SetParam(FIndex,AValue);
|
577 |
end;
|
578 |
|
579 |
procedure TParamIntf.SetAsFloat(aValue: Float);
|
580 |
begin
|
581 |
FOwner.SetParam(FIndex,AValue);
|
582 |
end;
|
583 |
|
584 |
procedure TParamIntf.SetAsPointer(aValue: Pointer);
|
585 |
begin
|
586 |
IBError(ibxeNotSupported,[]);
|
587 |
end;
|
588 |
|
589 |
procedure TParamIntf.SetAsShort(aValue: Short);
|
590 |
begin
|
591 |
FOwner.SetParam(FIndex,AValue);
|
592 |
end;
|
593 |
|
594 |
procedure TParamIntf.SetAsString(aValue: AnsiString);
|
595 |
begin
|
596 |
FOwner.SetParam(FIndex,AValue);
|
597 |
end;
|
598 |
|
599 |
procedure TParamIntf.SetAsVariant(aValue: Variant);
|
600 |
begin
|
601 |
FOwner.SetParam(FIndex,AValue);
|
602 |
end;
|
603 |
|
604 |
procedure TParamIntf.SetIsNull(aValue: Boolean);
|
605 |
begin
|
606 |
if aValue then
|
607 |
FOwner.SetParam(FIndex,NULL)
|
608 |
end;
|
609 |
|
610 |
procedure TParamIntf.SetAsBlob(aValue: IBlob);
|
611 |
begin
|
612 |
IBError(ibxeNotSupported,[]);
|
613 |
end;
|
614 |
|
615 |
procedure TParamIntf.SetAsArray(anArray: IArray);
|
616 |
begin
|
617 |
IBError(ibxeNotSupported,[]);
|
618 |
end;
|
619 |
|
620 |
procedure TParamIntf.SetAsQuad(aValue: TISC_QUAD);
|
621 |
begin
|
622 |
IBError(ibxeNotSupported,[]);
|
623 |
end;
|
624 |
|
625 |
procedure TParamIntf.SetCharSetID(aValue: cardinal);
|
626 |
var s: RawByteString;
|
627 |
codepage: TSystemCodePage;
|
628 |
str: string;
|
629 |
begin
|
630 |
str := FOwner.FParams[FIndex].Value;
|
631 |
s := str;
|
632 |
if FOwner.Database.Attachment.CharSetID2CodePage(aValue,codepage) then
|
633 |
SetCodePage(s,codepage,codepage <> cp_none);
|
634 |
end;
|
635 |
|
636 |
procedure TParamIntf.SetAsBcd(aValue: tBCD);
|
637 |
begin
|
638 |
FOwner.SetParam(FIndex,VarFmtBCDCreate(AValue));
|
639 |
end;
|
640 |
|
641 |
{ TParamListIntf }
|
642 |
|
643 |
procedure TParamListIntf.SetParam(index: integer; aValue: variant);
|
644 |
begin
|
645 |
FParams[index].Value := aValue;
|
646 |
FParams[index].Modified := true;
|
647 |
FParams[index].TimeZoneID := TimeZoneID_GMT;
|
648 |
FModified := true;
|
649 |
end;
|
650 |
|
651 |
procedure TParamListIntf.SetTimeZoneID(index: integer; aValue: TFBTimeZoneID);
|
652 |
begin
|
653 |
if FParams[index].Modified then
|
654 |
FParams[index].TimeZoneID := aValue;
|
655 |
end;
|
656 |
|
657 |
constructor TParamListIntf.Create(aFields: TFields; aDatabase: TIBDatabase);
|
658 |
var i,j: integer;
|
659 |
begin
|
660 |
inherited Create;
|
661 |
FDatabase := aDatabase;
|
662 |
SetLength(FParams,aFields.Count*2);
|
663 |
j := 0;
|
664 |
{set up both current and "OLD" parameters from Field Names}
|
665 |
for i := 0 to aFields.Count - 1 do
|
666 |
if aFields[i].FieldKind = fkData then
|
667 |
begin
|
668 |
FParams[j].Name := aFields[i].FieldName;
|
669 |
FParams[j].Value := NULL;
|
670 |
FParams[j].Modified := false;
|
671 |
FParams[j].DataSet := aFields[i].DataSet;
|
672 |
Inc(j);
|
673 |
FParams[j].Name := 'OLD_' + aFields[i].FieldName;
|
674 |
FParams[j].Value := NULL;
|
675 |
FParams[j].Modified := false;
|
676 |
FParams[j].DataSet := aFields[i].DataSet;
|
677 |
Inc(j);
|
678 |
end;
|
679 |
SetLength(FParams,j);
|
680 |
end;
|
681 |
|
682 |
destructor TParamListIntf.Destroy;
|
683 |
begin
|
684 |
SetLength(FParams,0);
|
685 |
inherited Destroy;
|
686 |
end;
|
687 |
|
688 |
function TParamListIntf.getCount: integer;
|
689 |
begin
|
690 |
Result := Length(FParams);
|
691 |
end;
|
692 |
|
693 |
function TParamListIntf.getSQLParam(index: integer): ISQLParam;
|
694 |
begin
|
695 |
if (index < 0) or (index >= getCount) then
|
696 |
IBError(ibxeInvalidColumnIndex,[nil]);
|
697 |
Result := TParamIntf.Create(self,index);
|
698 |
end;
|
699 |
|
700 |
function TParamListIntf.ByName(Idx: AnsiString): ISQLParam;
|
701 |
var i: integer;
|
702 |
begin
|
703 |
Result := nil;
|
704 |
for i := 0 to getCount - 1 do
|
705 |
if CompareText(FParams[i].Name,Idx) = 0 then
|
706 |
begin
|
707 |
Result := getSQLParam(i);
|
708 |
Exit;
|
709 |
end;
|
710 |
end;
|
711 |
|
712 |
function TParamListIntf.GetModified: Boolean;
|
713 |
begin
|
714 |
Result := FModified;
|
715 |
end;
|
716 |
|
717 |
function TParamListIntf.GetHasCaseSensitiveParams: Boolean;
|
718 |
begin
|
719 |
Result := false;
|
720 |
end;
|
721 |
|
722 |
{ TIBUpdate }
|
723 |
|
724 |
function TIBUpdate.GetSQL(UpdateKind: TUpdateKind): TStrings;
|
725 |
begin
|
726 |
Result := FDummySQL; {non empty result}
|
727 |
end;
|
728 |
|
729 |
function TIBUpdate.GetDataSet: TIBCustomDataSet;
|
730 |
begin
|
731 |
Result := FDataSet;
|
732 |
end;
|
733 |
|
734 |
procedure TIBUpdate.SetDataSet(ADataSet: TIBCustomDataSet);
|
735 |
begin
|
736 |
FDataSet := ADataset;
|
737 |
end;
|
738 |
|
739 |
procedure TIBUpdate.Apply(UpdateKind: TUpdateKind; buff: PChar);
|
740 |
var Params: ISQLParams;
|
741 |
begin
|
742 |
Params := TParamListIntf.Create(Dataset.Fields,(DataSet.Database as TIBDatabase));
|
743 |
InternalSetParams(Params,buff);
|
744 |
if assigned(FOnApplyUpdates) then
|
745 |
OnApplyUpdates(self,UpdateKind,Params);
|
746 |
end;
|
747 |
|
748 |
constructor TIBUpdate.Create(AOwner: TComponent);
|
749 |
begin
|
750 |
inherited Create(AOwner);
|
751 |
FDummySQL := TStringList.Create;
|
752 |
FDummySQL.Text := '*';
|
753 |
end;
|
754 |
|
755 |
destructor TIBUpdate.Destroy;
|
756 |
begin
|
757 |
if assigned(FDummySQL) then FDummySQL.Free;
|
758 |
inherited Destroy;
|
759 |
end;
|
760 |
|
761 |
end.
|
762 |
|