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(* |
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* Firebird Interface (fbintf). The fbintf components provide a set of |
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* Pascal language bindings for the Firebird API. Although predominantly |
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* a new development they include source code taken from IBX and may be |
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* considered a derived product. This software thus also includes the copyright |
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* notice and license conditions from IBX. |
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* |
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* Except for those parts dervied from IBX, contents of this file are subject |
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* to the Initial Developer's Public License Version 1.0 (the "License"); you |
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* may not use this file except in compliance with the License. You may obtain a |
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* copy 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) 2016 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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{************************************************************************} |
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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 FBSQLData; |
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{$IFDEF MSWINDOWS} |
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{$DEFINE WINDOWS} |
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{$ENDIF} |
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|
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{$IFDEF FPC} |
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{$mode delphi} |
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{$codepage UTF8} |
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{$interfaces COM} |
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{$ENDIF} |
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|
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{ This Unit was hacked out of the IBSQL unit and defines a class used as the |
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base for interfaces accessing SQLDAVar data and Array Elements. The abstract |
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methods are used to customise for an SQLDAVar or Array Element. The empty |
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methods are needed for SQL parameters only. The string getters and setters |
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are virtual as SQLVar and Array encodings of string data is different.} |
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|
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{ $define ALLOWDIALECT3PARAMNAMES} |
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|
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{$ifndef ALLOWDIALECT3PARAMNAMES} |
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|
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{ Note on SQL Dialects and SQL Parameter Names |
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-------------------------------------------- |
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|
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Even when dialect 3 quoted format parameter names are not supported, IBX still processes |
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parameter names case insensitive. This does result in some additional overhead |
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due to a call to "AnsiUpperCase". This can be avoided by undefining |
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"UseCaseInSensitiveParamName" below. |
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|
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Note: do not define "UseCaseSensitiveParamName" when "ALLOWDIALECT3PARAMNAMES" |
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is defined. This will not give a useful result. |
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} |
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{$define UseCaseInSensitiveParamName} |
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{$endif} |
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|
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interface |
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|
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uses |
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Classes, SysUtils, IBExternals, IBHeader, IB, FBActivityMonitor; |
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|
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type |
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|
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{ TSQLDataItem } |
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|
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TSQLDataItem = class(TFBInterfacedObject) |
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private |
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function AdjustScale(Value: Int64; aScale: Integer): Double; |
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function AdjustScaleToInt64(Value: Int64; aScale: Integer): Int64; |
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function AdjustScaleToCurrency(Value: Int64; aScale: Integer): Currency; |
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procedure SetAsInteger(AValue: Integer); |
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protected |
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function AdjustScaleFromCurrency(Value: Currency; aScale: Integer): Int64; |
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function AdjustScaleFromDouble(Value: Double; aScale: Integer): Int64; |
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procedure CheckActive; virtual; |
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function GetSQLDialect: integer; virtual; abstract; |
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procedure Changed; virtual; |
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procedure Changing; virtual; |
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procedure InternalSetAsString(Value: AnsiString); virtual; |
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function SQLData: PByte; virtual; abstract; |
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function GetDataLength: cardinal; virtual; abstract; |
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function GetCodePage: TSystemCodePage; virtual; abstract; |
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function getCharSetID: cardinal; virtual; abstract; |
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function Transliterate(s: AnsiString; CodePage: TSystemCodePage): RawByteString; |
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procedure SetScale(aValue: integer); virtual; |
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procedure SetDataLength(len: cardinal); virtual; |
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procedure SetSQLType(aValue: cardinal); virtual; |
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property DataLength: cardinal read GetDataLength write SetDataLength; |
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|
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public |
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function GetSQLType: cardinal; virtual; abstract; |
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function GetSQLTypeName: AnsiString; overload; |
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class function GetSQLTypeName(SQLType: short): AnsiString; overload; |
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function GetName: AnsiString; virtual; abstract; |
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function GetScale: integer; virtual; abstract; |
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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; |
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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; virtual; |
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function GetIsNull: Boolean; virtual; |
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function getIsNullable: boolean; virtual; |
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function GetAsVariant: Variant; |
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function GetModified: boolean; virtual; |
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procedure SetAsBoolean(AValue: boolean); virtual; |
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procedure SetAsCurrency(Value: Currency); virtual; |
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procedure SetAsInt64(Value: Int64); virtual; |
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procedure SetAsDate(Value: TDateTime); virtual; |
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procedure SetAsLong(Value: Long); virtual; |
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procedure SetAsTime(Value: TDateTime); virtual; |
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procedure SetAsDateTime(Value: TDateTime); |
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procedure SetAsDouble(Value: Double); virtual; |
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procedure SetAsFloat(Value: Float); virtual; |
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procedure SetAsPointer(Value: Pointer); |
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procedure SetAsQuad(Value: TISC_QUAD); |
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procedure SetAsShort(Value: short); virtual; |
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procedure SetAsString(Value: AnsiString); virtual; |
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procedure SetAsVariant(Value: Variant); |
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procedure SetAsNumeric(Value: Int64; aScale: integer); |
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procedure SetIsNull(Value: Boolean); virtual; |
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procedure SetIsNullable(Value: Boolean); virtual; |
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procedure SetName(aValue: AnsiString); virtual; |
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property AsDate: TDateTime read GetAsDateTime write SetAsDate; |
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property AsBoolean:boolean read GetAsBoolean write SetAsBoolean; |
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property AsTime: TDateTime read GetAsDateTime write SetAsTime; |
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property AsDateTime: TDateTime read GetAsDateTime write SetAsDateTime; |
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property AsDouble: Double read GetAsDouble write SetAsDouble; |
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property AsFloat: Float read GetAsFloat write SetAsFloat; |
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property AsCurrency: Currency read GetAsCurrency write SetAsCurrency; |
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property AsInt64: Int64 read GetAsInt64 write SetAsInt64; |
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property AsInteger: Integer read GetAsLong write SetAsInteger; |
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property AsLong: Long read GetAsLong write SetAsLong; |
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property AsPointer: Pointer read GetAsPointer write SetAsPointer; |
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property AsQuad: TISC_QUAD read GetAsQuad write SetAsQuad; |
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property AsShort: short read GetAsShort write SetAsShort; |
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property AsString: AnsiString read GetAsString write SetAsString; |
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property AsVariant: Variant read GetAsVariant write SetAsVariant; |
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property Modified: Boolean read getModified; |
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property IsNull: Boolean read GetIsNull write SetIsNull; |
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property IsNullable: Boolean read GetIsNullable write SetIsNullable; |
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property Scale: integer read GetScale write SetScale; |
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property SQLType: cardinal read GetSQLType write SetSQLType; |
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end; |
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|
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TSQLVarData = class; |
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|
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TStatementStatus = (ssPrepared, ssExecuteResults, ssCursorOpen, ssBOF, ssEOF); |
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|
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{ TSQLDataArea } |
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|
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TSQLDataArea = class |
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private |
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function GetColumn(index: integer): TSQLVarData; |
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function GetCount: integer; |
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protected |
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FUniqueRelationName: AnsiString; |
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FColumnList: array of TSQLVarData; |
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function GetStatement: IStatement; virtual; abstract; |
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function GetPrepareSeqNo: integer; virtual; abstract; |
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function GetTransactionSeqNo: integer; virtual; abstract; |
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procedure SetCount(aValue: integer); virtual; abstract; |
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procedure SetUniqueRelationName; |
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public |
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procedure Initialize; virtual; |
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function IsInputDataArea: boolean; virtual; abstract; {Input to Database} |
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procedure PreprocessSQL(sSQL: AnsiString; GenerateParamNames: boolean; |
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var sProcessedSQL: AnsiString); |
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function ColumnsInUseCount: integer; virtual; |
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function ColumnByName(Idx: AnsiString): TSQLVarData; |
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function CheckStatementStatus(Request: TStatementStatus): boolean; virtual; abstract; |
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procedure GetData(index: integer; var IsNull: boolean; var len: short; |
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var data: PByte); virtual; |
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procedure RowChange; |
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function StateChanged(var ChangeSeqNo: integer): boolean; virtual; abstract; |
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property Count: integer read GetCount; |
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property Column[index: integer]: TSQLVarData read GetColumn; |
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property UniqueRelationName: AnsiString read FUniqueRelationName; |
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property Statement: IStatement read GetStatement; |
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property PrepareSeqNo: integer read GetPrepareSeqNo; |
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property TransactionSeqNo: integer read GetTransactionSeqNo; |
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end; |
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|
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{ TSQLVarData } |
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|
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TSQLVarData = class |
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private |
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FParent: TSQLDataArea; |
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FName: AnsiString; |
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FIndex: integer; |
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FModified: boolean; |
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FUniqueName: boolean; |
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FVarString: RawByteString; |
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function GetStatement: IStatement; |
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procedure SetName(AValue: AnsiString); |
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protected |
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function GetSQLType: cardinal; virtual; abstract; |
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function GetSubtype: integer; virtual; abstract; |
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function GetAliasName: AnsiString; virtual; abstract; |
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function GetFieldName: AnsiString; virtual; abstract; |
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function GetOwnerName: AnsiString; virtual; abstract; |
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function GetRelationName: AnsiString; virtual; abstract; |
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function GetScale: integer; virtual; abstract; |
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function GetCharSetID: cardinal; virtual; abstract; |
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function GetCodePage: TSystemCodePage; virtual; abstract; |
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function GetIsNull: Boolean; virtual; abstract; |
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function GetIsNullable: boolean; virtual; abstract; |
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function GetSQLData: PByte; virtual; abstract; |
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function GetDataLength: cardinal; virtual; abstract; |
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procedure SetIsNull(Value: Boolean); virtual; abstract; |
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procedure SetIsNullable(Value: Boolean); virtual; abstract; |
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procedure SetSQLData(AValue: PByte; len: cardinal); virtual; abstract; |
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procedure SetScale(aValue: integer); virtual; abstract; |
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procedure SetDataLength(len: cardinal); virtual; abstract; |
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procedure SetSQLType(aValue: cardinal); virtual; abstract; |
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procedure SetCharSetID(aValue: cardinal); virtual; abstract; |
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public |
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constructor Create(aParent: TSQLDataArea; aIndex: integer); |
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procedure SetString(aValue: AnsiString); |
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procedure Changed; virtual; |
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procedure RowChange; virtual; |
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function GetAsArray(Array_ID: TISC_QUAD): IArray; virtual; abstract; |
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function GetAsBlob(Blob_ID: TISC_QUAD; BPB: IBPB): IBlob; virtual; abstract; |
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function CreateBlob: IBlob; virtual; abstract; |
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function GetArrayMetaData: IArrayMetaData; virtual; abstract; |
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function GetBlobMetaData: IBlobMetaData; virtual; abstract; |
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procedure Initialize; virtual; |
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|
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public |
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property AliasName: AnsiString read GetAliasName; |
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property FieldName: AnsiString read GetFieldName; |
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property OwnerName: AnsiString read GetOwnerName; |
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property RelationName: AnsiString read GetRelationName; |
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property Parent: TSQLDataArea read FParent; |
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property Index: integer read FIndex; |
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property Name: AnsiString read FName write SetName; |
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property CharSetID: cardinal read GetCharSetID write SetCharSetID; |
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property SQLType: cardinal read GetSQLType write SetSQLType; |
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property SQLSubtype: integer read GetSubtype; |
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property SQLData: PByte read GetSQLData; |
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property DataLength: cardinal read GetDataLength write SetDataLength; |
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property IsNull: Boolean read GetIsNull write SetIsNull; |
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property IsNullable: Boolean read GetIsNullable write SetIsNullable; |
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property Scale: integer read GetScale write SetScale; |
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public |
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property Modified: Boolean read FModified; |
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property Statement: IStatement read GetStatement; |
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property UniqueName: boolean read FUniqueName write FUniqueName; |
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end; |
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|
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{ TColumnMetaData } |
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|
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TColumnMetaData = class(TSQLDataItem,IColumnMetaData) |
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private |
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FIBXSQLVAR: TSQLVarData; |
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FOwner: IUnknown; {Keep reference to ensure Metadata/statement not discarded} |
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FPrepareSeqNo: integer; |
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FStatement: IStatement; |
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FChangeSeqNo: integer; |
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protected |
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procedure CheckActive; override; |
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function SQLData: PByte; override; |
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function GetDataLength: cardinal; override; |
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function GetCodePage: TSystemCodePage; override; |
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|
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public |
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constructor Create(aOwner: IUnknown; aIBXSQLVAR: TSQLVarData); |
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destructor Destroy; override; |
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function GetSQLDialect: integer; override; |
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property Statement: IStatement read FStatement; |
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|
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public |
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{IColumnMetaData} |
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function GetIndex: integer; |
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function GetSQLType: cardinal; override; |
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function getSubtype: integer; |
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function getRelationName: AnsiString; |
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function getOwnerName: AnsiString; |
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function getSQLName: AnsiString; {Name of the column} |
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function getAliasName: AnsiString; {Alias Name of column or Column Name if not alias} |
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function GetName: AnsiString; override; {Disambiguated uppercase Field Name} |
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function GetScale: integer; override; |
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function getCharSetID: cardinal; override; |
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function GetIsNullable: boolean; override; |
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function GetSize: cardinal; |
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function GetArrayMetaData: IArrayMetaData; |
| 332 |
function GetBlobMetaData: IBlobMetaData; |
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property Name: AnsiString read GetName; |
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property Size: cardinal read GetSize; |
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property CharSetID: cardinal read getCharSetID; |
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property SQLSubtype: integer read getSubtype; |
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property IsNullable: Boolean read GetIsNullable; |
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end; |
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|
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{ TIBSQLData } |
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|
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TIBSQLData = class(TColumnMetaData,ISQLData) |
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protected |
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procedure CheckActive; override; |
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public |
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function GetIsNull: Boolean; override; |
| 347 |
function GetAsArray: IArray; |
| 348 |
function GetAsBlob: IBlob; overload; |
| 349 |
function GetAsBlob(BPB: IBPB): IBlob; overload; |
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function GetAsString: AnsiString; override; |
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property AsBlob: IBlob read GetAsBlob; |
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end; |
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|
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{ TSQLParam } |
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|
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TSQLParam = class(TIBSQLData,ISQLParam) |
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protected |
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procedure CheckActive; override; |
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procedure Changed; override; |
| 360 |
procedure InternalSetAsString(Value: AnsiString); override; |
| 361 |
procedure SetScale(aValue: integer); override; |
| 362 |
procedure SetDataLength(len: cardinal); override; |
| 363 |
procedure SetSQLType(aValue: cardinal); override; |
| 364 |
public |
| 365 |
procedure Clear; |
| 366 |
function GetModified: boolean; override; |
| 367 |
function GetAsPointer: Pointer; |
| 368 |
procedure SetName(Value: AnsiString); override; |
| 369 |
procedure SetIsNull(Value: Boolean); override; |
| 370 |
procedure SetIsNullable(Value: Boolean); override; |
| 371 |
procedure SetAsArray(anArray: IArray); |
| 372 |
|
| 373 |
{overrides} |
| 374 |
procedure SetAsBoolean(AValue: boolean); |
| 375 |
procedure SetAsCurrency(AValue: Currency); |
| 376 |
procedure SetAsInt64(AValue: Int64); |
| 377 |
procedure SetAsDate(AValue: TDateTime); |
| 378 |
procedure SetAsLong(AValue: Long); |
| 379 |
procedure SetAsTime(AValue: TDateTime); |
| 380 |
procedure SetAsDateTime(AValue: TDateTime); |
| 381 |
procedure SetAsDouble(AValue: Double); |
| 382 |
procedure SetAsFloat(AValue: Float); |
| 383 |
procedure SetAsPointer(AValue: Pointer); |
| 384 |
procedure SetAsShort(AValue: Short); |
| 385 |
procedure SetAsString(AValue: AnsiString); override; |
| 386 |
procedure SetAsVariant(AValue: Variant); |
| 387 |
procedure SetAsBlob(aValue: IBlob); |
| 388 |
procedure SetAsQuad(AValue: TISC_QUAD); |
| 389 |
procedure SetCharSetID(aValue: cardinal); |
| 390 |
|
| 391 |
property AsBlob: IBlob read GetAsBlob write SetAsBlob; |
| 392 |
property IsNullable: Boolean read GetIsNullable write SetIsNullable; |
| 393 |
end; |
| 394 |
|
| 395 |
{ TMetaData } |
| 396 |
|
| 397 |
TMetaData = class(TInterfaceOwner,IMetaData) |
| 398 |
private |
| 399 |
FPrepareSeqNo: integer; |
| 400 |
FMetaData: TSQLDataArea; |
| 401 |
FStatement: IStatement; {ensure FStatement not destroyed until no longer needed} |
| 402 |
procedure CheckActive; |
| 403 |
public |
| 404 |
constructor Create(aMetaData: TSQLDataArea); |
| 405 |
destructor Destroy; override; |
| 406 |
public |
| 407 |
{IMetaData} |
| 408 |
function GetUniqueRelationName: AnsiString; |
| 409 |
function getCount: integer; |
| 410 |
function getColumnMetaData(index: integer): IColumnMetaData; |
| 411 |
function ByName(Idx: AnsiString): IColumnMetaData; |
| 412 |
end; |
| 413 |
|
| 414 |
{ TSQLParams } |
| 415 |
|
| 416 |
TSQLParams = class(TInterfaceOwner,ISQLParams) |
| 417 |
private |
| 418 |
FPrepareSeqNo: integer; |
| 419 |
FChangeSeqNo: integer; |
| 420 |
FSQLParams: TSQLDataArea; |
| 421 |
FStatement: IStatement; {ensure FStatement not destroyed until no longer needed} |
| 422 |
procedure CheckActive; |
| 423 |
public |
| 424 |
constructor Create(aSQLParams: TSQLDataArea); |
| 425 |
destructor Destroy; override; |
| 426 |
public |
| 427 |
{ISQLParams} |
| 428 |
function getCount: integer; |
| 429 |
function getSQLParam(index: integer): ISQLParam; |
| 430 |
function ByName(Idx: AnsiString): ISQLParam ; |
| 431 |
function GetModified: Boolean; |
| 432 |
end; |
| 433 |
|
| 434 |
{ TResults } |
| 435 |
|
| 436 |
TResults = class(TInterfaceOwner,IResults) |
| 437 |
private |
| 438 |
FPrepareSeqNo: integer; |
| 439 |
FTransactionSeqNo: integer; |
| 440 |
FChangeSeqNo: integer; |
| 441 |
FResults: TSQLDataArea; |
| 442 |
FStatement: IStatement; {ensure FStatement not destroyed until no longer needed} |
| 443 |
function GetISQLData(aIBXSQLVAR: TSQLVarData): ISQLData; |
| 444 |
protected |
| 445 |
procedure CheckActive; |
| 446 |
public |
| 447 |
constructor Create(aResults: TSQLDataArea); |
| 448 |
{IResults} |
| 449 |
function getCount: integer; |
| 450 |
function ByName(Idx: AnsiString): ISQLData; |
| 451 |
function getSQLData(index: integer): ISQLData; |
| 452 |
procedure GetData(index: integer; var IsNull:boolean; var len: short; var data: PByte); |
| 453 |
function GetTransaction: ITransaction; virtual; |
| 454 |
procedure SetRetainInterfaces(aValue: boolean); |
| 455 |
end; |
| 456 |
|
| 457 |
implementation |
| 458 |
|
| 459 |
uses FBMessages, FBClientAPI, variants, IBUtils, FBTransaction; |
| 460 |
|
| 461 |
|
| 462 |
{ TSQLDataArea } |
| 463 |
|
| 464 |
function TSQLDataArea.GetColumn(index: integer): TSQLVarData; |
| 465 |
begin |
| 466 |
if (index < 0) or (index >= Count) then |
| 467 |
IBError(ibxeInvalidColumnIndex,[nil]); |
| 468 |
Result := FColumnList[index]; |
| 469 |
end; |
| 470 |
|
| 471 |
function TSQLDataArea.GetCount: integer; |
| 472 |
begin |
| 473 |
Result := Length(FColumnList); |
| 474 |
end; |
| 475 |
|
| 476 |
procedure TSQLDataArea.SetUniqueRelationName; |
| 477 |
var |
| 478 |
i: Integer; |
| 479 |
bUnique: Boolean; |
| 480 |
RelationName: AnsiString; |
| 481 |
begin |
| 482 |
bUnique := True; |
| 483 |
for i := 0 to ColumnsInUseCount - 1 do |
| 484 |
begin |
| 485 |
RelationName := Column[i].RelationName; |
| 486 |
|
| 487 |
{First get the unique relation name, if any} |
| 488 |
|
| 489 |
if bUnique and (RelationName <> '') then |
| 490 |
begin |
| 491 |
if FUniqueRelationName = '' then |
| 492 |
FUniqueRelationName := RelationName |
| 493 |
else |
| 494 |
if RelationName <> FUniqueRelationName then |
| 495 |
begin |
| 496 |
FUniqueRelationName := ''; |
| 497 |
bUnique := False; |
| 498 |
end; |
| 499 |
end; |
| 500 |
end; |
| 501 |
end; |
| 502 |
|
| 503 |
procedure TSQLDataArea.Initialize; |
| 504 |
var |
| 505 |
i: Integer; |
| 506 |
begin |
| 507 |
for i := 0 to ColumnsInUseCount - 1 do |
| 508 |
Column[i].Initialize; |
| 509 |
end; |
| 510 |
|
| 511 |
procedure TSQLDataArea.PreprocessSQL(sSQL: AnsiString; GenerateParamNames: boolean; |
| 512 |
var sProcessedSQL: AnsiString); |
| 513 |
var |
| 514 |
cCurChar, cNextChar, cQuoteChar: AnsiChar; |
| 515 |
sParamName: AnsiString; |
| 516 |
j, i, iLenSQL, iSQLPos: Integer; |
| 517 |
iCurState {$ifdef ALLOWDIALECT3PARAMNAMES}, iCurParamState {$endif}: Integer; |
| 518 |
iParamSuffix: Integer; |
| 519 |
slNames: TStrings; |
| 520 |
StrBuffer: PByte; |
| 521 |
found: boolean; |
| 522 |
|
| 523 |
const |
| 524 |
DefaultState = 0; |
| 525 |
CommentState = 1; |
| 526 |
QuoteState = 2; |
| 527 |
ParamState = 3; |
| 528 |
ArrayDimState = 4; |
| 529 |
{$ifdef ALLOWDIALECT3PARAMNAMES} |
| 530 |
ParamDefaultState = 0; |
| 531 |
ParamQuoteState = 1; |
| 532 |
{$endif} |
| 533 |
|
| 534 |
procedure AddToProcessedSQL(cChar: AnsiChar); |
| 535 |
begin |
| 536 |
StrBuffer[iSQLPos] := byte(cChar); |
| 537 |
Inc(iSQLPos); |
| 538 |
end; |
| 539 |
|
| 540 |
begin |
| 541 |
if not IsInputDataArea then |
| 542 |
IBError(ibxeNotPermitted,[nil]); |
| 543 |
|
| 544 |
sParamName := ''; |
| 545 |
iLenSQL := Length(sSQL); |
| 546 |
GetMem(StrBuffer,iLenSQL + 1); |
| 547 |
slNames := TStringList.Create; |
| 548 |
try |
| 549 |
{ Do some initializations of variables } |
| 550 |
iParamSuffix := 0; |
| 551 |
cQuoteChar := ''''; |
| 552 |
i := 1; |
| 553 |
iSQLPos := 0; |
| 554 |
iCurState := DefaultState; |
| 555 |
{$ifdef ALLOWDIALECT3PARAMNAMES} |
| 556 |
iCurParamState := ParamDefaultState; |
| 557 |
{$endif} |
| 558 |
{ Now, traverse through the SQL string, character by character, |
| 559 |
picking out the parameters and formatting correctly for InterBase } |
| 560 |
while (i <= iLenSQL) do begin |
| 561 |
{ Get the current token and a look-ahead } |
| 562 |
cCurChar := sSQL[i]; |
| 563 |
if i = iLenSQL then |
| 564 |
cNextChar := #0 |
| 565 |
else |
| 566 |
cNextChar := sSQL[i + 1]; |
| 567 |
{ Now act based on the current state } |
| 568 |
case iCurState of |
| 569 |
DefaultState: |
| 570 |
begin |
| 571 |
case cCurChar of |
| 572 |
'''', '"': |
| 573 |
begin |
| 574 |
cQuoteChar := cCurChar; |
| 575 |
iCurState := QuoteState; |
| 576 |
end; |
| 577 |
'?', ':': |
| 578 |
begin |
| 579 |
iCurState := ParamState; |
| 580 |
AddToProcessedSQL('?'); |
| 581 |
end; |
| 582 |
'/': if (cNextChar = '*') then |
| 583 |
begin |
| 584 |
AddToProcessedSQL(cCurChar); |
| 585 |
Inc(i); |
| 586 |
iCurState := CommentState; |
| 587 |
end; |
| 588 |
'[': |
| 589 |
begin |
| 590 |
AddToProcessedSQL(cCurChar); |
| 591 |
Inc(i); |
| 592 |
iCurState := ArrayDimState; |
| 593 |
end; |
| 594 |
end; |
| 595 |
end; |
| 596 |
|
| 597 |
ArrayDimState: |
| 598 |
begin |
| 599 |
case cCurChar of |
| 600 |
':',',','0'..'9',' ',#9,#10,#13: |
| 601 |
begin |
| 602 |
AddToProcessedSQL(cCurChar); |
| 603 |
Inc(i); |
| 604 |
end; |
| 605 |
else |
| 606 |
begin |
| 607 |
AddToProcessedSQL(cCurChar); |
| 608 |
Inc(i); |
| 609 |
iCurState := DefaultState; |
| 610 |
end; |
| 611 |
end; |
| 612 |
end; |
| 613 |
|
| 614 |
CommentState: |
| 615 |
begin |
| 616 |
if (cNextChar = #0) then |
| 617 |
IBError(ibxeSQLParseError, [SEOFInComment]) |
| 618 |
else if (cCurChar = '*') then begin |
| 619 |
if (cNextChar = '/') then |
| 620 |
iCurState := DefaultState; |
| 621 |
end; |
| 622 |
end; |
| 623 |
QuoteState: begin |
| 624 |
if cNextChar = #0 then |
| 625 |
IBError(ibxeSQLParseError, [SEOFInString]) |
| 626 |
else if (cCurChar = cQuoteChar) then begin |
| 627 |
if (cNextChar = cQuoteChar) then begin |
| 628 |
AddToProcessedSQL(cCurChar); |
| 629 |
Inc(i); |
| 630 |
end else |
| 631 |
iCurState := DefaultState; |
| 632 |
end; |
| 633 |
end; |
| 634 |
ParamState: |
| 635 |
begin |
| 636 |
{ collect the name of the parameter } |
| 637 |
{$ifdef ALLOWDIALECT3PARAMNAMES} |
| 638 |
if iCurParamState = ParamDefaultState then |
| 639 |
begin |
| 640 |
if cCurChar = '"' then |
| 641 |
iCurParamState := ParamQuoteState |
| 642 |
else |
| 643 |
{$endif} |
| 644 |
if (cCurChar in ['A'..'Z', 'a'..'z', '0'..'9', '_', '$']) then |
| 645 |
sParamName := sParamName + cCurChar |
| 646 |
else if GenerateParamNames then |
| 647 |
begin |
| 648 |
sParamName := 'IBXParam' + IntToStr(iParamSuffix); {do not localize} |
| 649 |
Inc(iParamSuffix); |
| 650 |
iCurState := DefaultState; |
| 651 |
slNames.AddObject(sParamName,self); //Note local convention |
| 652 |
//add pointer to self to mark entry |
| 653 |
sParamName := ''; |
| 654 |
end |
| 655 |
else |
| 656 |
IBError(ibxeSQLParseError, [SParamNameExpected]); |
| 657 |
{$ifdef ALLOWDIALECT3PARAMNAMES} |
| 658 |
end |
| 659 |
else begin |
| 660 |
{ determine if Quoted parameter name is finished } |
| 661 |
if cCurChar = '"' then |
| 662 |
begin |
| 663 |
Inc(i); |
| 664 |
slNames.Add(sParamName); |
| 665 |
SParamName := ''; |
| 666 |
iCurParamState := ParamDefaultState; |
| 667 |
iCurState := DefaultState; |
| 668 |
end |
| 669 |
else |
| 670 |
sParamName := sParamName + cCurChar |
| 671 |
end; |
| 672 |
{$endif} |
| 673 |
{ determine if the unquoted parameter name is finished } |
| 674 |
if {$ifdef ALLOWDIALECT3PARAMNAMES}(iCurParamState <> ParamQuoteState) and {$endif} |
| 675 |
(iCurState <> DefaultState) then |
| 676 |
begin |
| 677 |
if not (cNextChar in ['A'..'Z', 'a'..'z', |
| 678 |
'0'..'9', '_', '$']) then begin |
| 679 |
Inc(i); |
| 680 |
iCurState := DefaultState; |
| 681 |
slNames.Add(sParamName); |
| 682 |
sParamName := ''; |
| 683 |
end; |
| 684 |
end; |
| 685 |
end; |
| 686 |
end; |
| 687 |
if (iCurState <> ParamState) and (i <= iLenSQL) then |
| 688 |
AddToProcessedSQL(sSQL[i]); |
| 689 |
Inc(i); |
| 690 |
end; |
| 691 |
AddToProcessedSQL(#0); |
| 692 |
sProcessedSQL := strpas(PAnsiChar(StrBuffer)); |
| 693 |
SetCount(slNames.Count); |
| 694 |
for i := 0 to slNames.Count - 1 do |
| 695 |
begin |
| 696 |
Column[i].Name := slNames[i]; |
| 697 |
Column[i].UniqueName := (slNames.Objects[i] <> nil); |
| 698 |
end; |
| 699 |
for i := 0 to Count - 1 do |
| 700 |
begin |
| 701 |
if not Column[i].UniqueName then |
| 702 |
begin |
| 703 |
found := false; |
| 704 |
for j := i + 1 to Count - 1 do |
| 705 |
if Column[i].Name = Column[j].Name then |
| 706 |
begin |
| 707 |
found := true; |
| 708 |
break; |
| 709 |
end; |
| 710 |
Column[i].UniqueName := not found; |
| 711 |
end; |
| 712 |
end; |
| 713 |
finally |
| 714 |
slNames.Free; |
| 715 |
FreeMem(StrBuffer); |
| 716 |
end; |
| 717 |
end; |
| 718 |
|
| 719 |
function TSQLDataArea.ColumnsInUseCount: integer; |
| 720 |
begin |
| 721 |
Result := Count; |
| 722 |
end; |
| 723 |
|
| 724 |
function TSQLDataArea.ColumnByName(Idx: AnsiString): TSQLVarData; |
| 725 |
var |
| 726 |
s: AnsiString; |
| 727 |
i: Integer; |
| 728 |
begin |
| 729 |
{$ifdef UseCaseInSensitiveParamName} |
| 730 |
s := AnsiUpperCase(Idx); |
| 731 |
{$else} |
| 732 |
s := Idx; |
| 733 |
{$endif} |
| 734 |
for i := 0 to Count - 1 do |
| 735 |
if Column[i].Name = s then |
| 736 |
begin |
| 737 |
Result := Column[i]; |
| 738 |
Exit; |
| 739 |
end; |
| 740 |
Result := nil; |
| 741 |
end; |
| 742 |
|
| 743 |
procedure TSQLDataArea.GetData(index: integer; var IsNull: boolean; |
| 744 |
var len: short; var data: PByte); |
| 745 |
begin |
| 746 |
//Do Nothing |
| 747 |
end; |
| 748 |
|
| 749 |
procedure TSQLDataArea.RowChange; |
| 750 |
var i: integer; |
| 751 |
begin |
| 752 |
for i := 0 to Count - 1 do |
| 753 |
Column[i].RowChange; |
| 754 |
end; |
| 755 |
|
| 756 |
{TSQLVarData} |
| 757 |
|
| 758 |
function TSQLVarData.GetStatement: IStatement; |
| 759 |
begin |
| 760 |
Result := FParent.Statement; |
| 761 |
end; |
| 762 |
|
| 763 |
procedure TSQLVarData.SetName(AValue: AnsiString); |
| 764 |
begin |
| 765 |
if FName = AValue then Exit; |
| 766 |
{$ifdef UseCaseInSensitiveParamName} |
| 767 |
if Parent.IsInputDataArea then |
| 768 |
FName := AnsiUpperCase(AValue) |
| 769 |
else |
| 770 |
{$endif} |
| 771 |
FName := AValue; |
| 772 |
end; |
| 773 |
|
| 774 |
constructor TSQLVarData.Create(aParent: TSQLDataArea; aIndex: integer); |
| 775 |
begin |
| 776 |
inherited Create; |
| 777 |
FParent := aParent; |
| 778 |
FIndex := aIndex; |
| 779 |
FUniqueName := true; |
| 780 |
end; |
| 781 |
|
| 782 |
procedure TSQLVarData.SetString(aValue: AnsiString); |
| 783 |
begin |
| 784 |
{we take full advantage here of reference counted strings. When setting a string |
| 785 |
value, a reference is kept in FVarString and a pointer to it placed in the |
| 786 |
SQLVar. This avoids string copies. Note that PAnsiChar is guaranteed to point to |
| 787 |
a zero byte when the string is empty, neatly avoiding a nil pointer error.} |
| 788 |
|
| 789 |
FVarString := aValue; |
| 790 |
SQLType := SQL_TEXT; |
| 791 |
SetSQLData(PByte(PAnsiChar(FVarString)),Length(aValue)); |
| 792 |
end; |
| 793 |
|
| 794 |
procedure TSQLVarData.Changed; |
| 795 |
begin |
| 796 |
FModified := true; |
| 797 |
end; |
| 798 |
|
| 799 |
procedure TSQLVarData.RowChange; |
| 800 |
begin |
| 801 |
FModified := false; |
| 802 |
FVarString := ''; |
| 803 |
end; |
| 804 |
|
| 805 |
procedure TSQLVarData.Initialize; |
| 806 |
|
| 807 |
function FindVarByName(idx: AnsiString; limit: integer): TSQLVarData; |
| 808 |
var |
| 809 |
k: integer; |
| 810 |
begin |
| 811 |
for k := 0 to limit do |
| 812 |
if Parent.Column[k].Name = idx then |
| 813 |
begin |
| 814 |
Result := Parent.Column[k]; |
| 815 |
Exit; |
| 816 |
end; |
| 817 |
Result := nil; |
| 818 |
end; |
| 819 |
|
| 820 |
var |
| 821 |
j, j_len: Integer; |
| 822 |
st: AnsiString; |
| 823 |
sBaseName: AnsiString; |
| 824 |
begin |
| 825 |
RowChange; |
| 826 |
|
| 827 |
{If an output SQLDA then copy the aliasname to the FName. Ensure |
| 828 |
that they are all upper case only and disambiguated. |
| 829 |
} |
| 830 |
|
| 831 |
if not Parent.IsInputDataArea then |
| 832 |
begin |
| 833 |
st := Space2Underscore(AnsiUppercase(AliasName)); |
| 834 |
if st = '' then |
| 835 |
begin |
| 836 |
sBaseName := 'F_'; {do not localize} |
| 837 |
j := 1; j_len := 1; |
| 838 |
st := sBaseName + IntToStr(j); |
| 839 |
end |
| 840 |
else |
| 841 |
begin |
| 842 |
j := 0; j_len := 0; |
| 843 |
sBaseName := st; |
| 844 |
end; |
| 845 |
|
| 846 |
{Look for other columns with the same name and make unique} |
| 847 |
|
| 848 |
while FindVarByName(st,Index-1) <> nil do |
| 849 |
begin |
| 850 |
Inc(j); |
| 851 |
j_len := Length(IntToStr(j)); |
| 852 |
if j_len + Length(sBaseName) > 31 then |
| 853 |
st := system.Copy(sBaseName, 1, 31 - j_len) + IntToStr(j) |
| 854 |
else |
| 855 |
st := sBaseName + IntToStr(j); |
| 856 |
end; |
| 857 |
|
| 858 |
Name := st; |
| 859 |
end; |
| 860 |
end; |
| 861 |
|
| 862 |
{TSQLDataItem} |
| 863 |
|
| 864 |
function TSQLDataItem.AdjustScale(Value: Int64; aScale: Integer): Double; |
| 865 |
var |
| 866 |
Scaling : Int64; |
| 867 |
i: Integer; |
| 868 |
Val: Double; |
| 869 |
begin |
| 870 |
Scaling := 1; Val := Value; |
| 871 |
if aScale > 0 then |
| 872 |
begin |
| 873 |
for i := 1 to aScale do |
| 874 |
Scaling := Scaling * 10; |
| 875 |
result := Val * Scaling; |
| 876 |
end |
| 877 |
else |
| 878 |
if aScale < 0 then |
| 879 |
begin |
| 880 |
for i := -1 downto aScale do |
| 881 |
Scaling := Scaling * 10; |
| 882 |
result := Val / Scaling; |
| 883 |
end |
| 884 |
else |
| 885 |
result := Val; |
| 886 |
end; |
| 887 |
|
| 888 |
function TSQLDataItem.AdjustScaleToInt64(Value: Int64; aScale: Integer): Int64; |
| 889 |
var |
| 890 |
Scaling : Int64; |
| 891 |
i: Integer; |
| 892 |
Val: Int64; |
| 893 |
begin |
| 894 |
Scaling := 1; Val := Value; |
| 895 |
if aScale > 0 then begin |
| 896 |
for i := 1 to aScale do Scaling := Scaling * 10; |
| 897 |
result := Val * Scaling; |
| 898 |
end else if aScale < 0 then begin |
| 899 |
for i := -1 downto aScale do Scaling := Scaling * 10; |
| 900 |
result := Val div Scaling; |
| 901 |
end else |
| 902 |
result := Val; |
| 903 |
end; |
| 904 |
|
| 905 |
function TSQLDataItem.AdjustScaleToCurrency(Value: Int64; aScale: Integer |
| 906 |
): Currency; |
| 907 |
var |
| 908 |
Scaling : Int64; |
| 909 |
i : Integer; |
| 910 |
FractionText, PadText, CurrText: AnsiString; |
| 911 |
begin |
| 912 |
Result := 0; |
| 913 |
Scaling := 1; |
| 914 |
PadText := ''; |
| 915 |
if aScale > 0 then |
| 916 |
begin |
| 917 |
for i := 1 to aScale do |
| 918 |
Scaling := Scaling * 10; |
| 919 |
result := Value * Scaling; |
| 920 |
end |
| 921 |
else |
| 922 |
if aScale < 0 then |
| 923 |
begin |
| 924 |
for i := -1 downto aScale do |
| 925 |
Scaling := Scaling * 10; |
| 926 |
FractionText := IntToStr(abs(Value mod Scaling)); |
| 927 |
for i := Length(FractionText) to -aScale -1 do |
| 928 |
PadText := '0' + PadText; |
| 929 |
{$IF declared(DefaultFormatSettings)} |
| 930 |
with DefaultFormatSettings do |
| 931 |
{$ELSE} |
| 932 |
{$IF declared(FormatSettings)} |
| 933 |
with FormatSettings do |
| 934 |
{$IFEND} |
| 935 |
{$IFEND} |
| 936 |
if Value < 0 then |
| 937 |
CurrText := '-' + IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText |
| 938 |
else |
| 939 |
CurrText := IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText; |
| 940 |
try |
| 941 |
result := StrToCurr(CurrText); |
| 942 |
except |
| 943 |
on E: Exception do |
| 944 |
IBError(ibxeInvalidDataConversion, [nil]); |
| 945 |
end; |
| 946 |
end |
| 947 |
else |
| 948 |
result := Value; |
| 949 |
end; |
| 950 |
|
| 951 |
procedure TSQLDataItem.SetAsInteger(AValue: Integer); |
| 952 |
begin |
| 953 |
SetAsLong(aValue); |
| 954 |
end; |
| 955 |
|
| 956 |
function TSQLDataItem.AdjustScaleFromCurrency(Value: Currency; aScale: Integer |
| 957 |
): Int64; |
| 958 |
var |
| 959 |
Scaling : Int64; |
| 960 |
i : Integer; |
| 961 |
begin |
| 962 |
Result := 0; |
| 963 |
Scaling := 1; |
| 964 |
if aScale < 0 then |
| 965 |
begin |
| 966 |
for i := -1 downto aScale do |
| 967 |
Scaling := Scaling * 10; |
| 968 |
result := trunc(Value * Scaling); |
| 969 |
end |
| 970 |
else |
| 971 |
if aScale > 0 then |
| 972 |
begin |
| 973 |
for i := 1 to aScale do |
| 974 |
Scaling := Scaling * 10; |
| 975 |
result := trunc(Value / Scaling); |
| 976 |
end |
| 977 |
else |
| 978 |
result := trunc(Value); |
| 979 |
end; |
| 980 |
|
| 981 |
function TSQLDataItem.AdjustScaleFromDouble(Value: Double; aScale: Integer |
| 982 |
): Int64; |
| 983 |
var |
| 984 |
Scaling : Int64; |
| 985 |
i : Integer; |
| 986 |
begin |
| 987 |
Result := 0; |
| 988 |
Scaling := 1; |
| 989 |
if aScale < 0 then |
| 990 |
begin |
| 991 |
for i := -1 downto aScale do |
| 992 |
Scaling := Scaling * 10; |
| 993 |
result := trunc(Value * Scaling); |
| 994 |
end |
| 995 |
else |
| 996 |
if aScale > 0 then |
| 997 |
begin |
| 998 |
for i := 1 to aScale do |
| 999 |
Scaling := Scaling * 10; |
| 1000 |
result := trunc(Value / Scaling); |
| 1001 |
end |
| 1002 |
else |
| 1003 |
result := trunc(Value); |
| 1004 |
end; |
| 1005 |
|
| 1006 |
procedure TSQLDataItem.CheckActive; |
| 1007 |
begin |
| 1008 |
//Do nothing by default |
| 1009 |
end; |
| 1010 |
|
| 1011 |
procedure TSQLDataItem.Changed; |
| 1012 |
begin |
| 1013 |
//Do nothing by default |
| 1014 |
end; |
| 1015 |
|
| 1016 |
procedure TSQLDataItem.Changing; |
| 1017 |
begin |
| 1018 |
//Do nothing by default |
| 1019 |
end; |
| 1020 |
|
| 1021 |
procedure TSQLDataItem.InternalSetAsString(Value: AnsiString); |
| 1022 |
begin |
| 1023 |
//Do nothing by default |
| 1024 |
end; |
| 1025 |
|
| 1026 |
function TSQLDataItem.Transliterate(s: AnsiString; CodePage: TSystemCodePage |
| 1027 |
): RawByteString; |
| 1028 |
begin |
| 1029 |
Result := s; |
| 1030 |
if StringCodePage(Result) <> CodePage then |
| 1031 |
SetCodePage(Result,CodePage,CodePage <> CP_NONE); |
| 1032 |
end; |
| 1033 |
|
| 1034 |
procedure TSQLDataItem.SetScale(aValue: integer); |
| 1035 |
begin |
| 1036 |
//Do nothing by default |
| 1037 |
end; |
| 1038 |
|
| 1039 |
procedure TSQLDataItem.SetDataLength(len: cardinal); |
| 1040 |
begin |
| 1041 |
//Do nothing by default |
| 1042 |
end; |
| 1043 |
|
| 1044 |
procedure TSQLDataItem.SetSQLType(aValue: cardinal); |
| 1045 |
begin |
| 1046 |
//Do nothing by default |
| 1047 |
end; |
| 1048 |
|
| 1049 |
function TSQLDataItem.GetSQLTypeName: AnsiString; |
| 1050 |
begin |
| 1051 |
Result := GetSQLTypeName(GetSQLType); |
| 1052 |
end; |
| 1053 |
|
| 1054 |
class function TSQLDataItem.GetSQLTypeName(SQLType: short): AnsiString; |
| 1055 |
begin |
| 1056 |
Result := 'Unknown'; |
| 1057 |
case SQLType of |
| 1058 |
SQL_VARYING: Result := 'SQL_VARYING'; |
| 1059 |
SQL_TEXT: Result := 'SQL_TEXT'; |
| 1060 |
SQL_DOUBLE: Result := 'SQL_DOUBLE'; |
| 1061 |
SQL_FLOAT: Result := 'SQL_FLOAT'; |
| 1062 |
SQL_LONG: Result := 'SQL_LONG'; |
| 1063 |
SQL_SHORT: Result := 'SQL_SHORT'; |
| 1064 |
SQL_TIMESTAMP: Result := 'SQL_TIMESTAMP'; |
| 1065 |
SQL_BLOB: Result := 'SQL_BLOB'; |
| 1066 |
SQL_D_FLOAT: Result := 'SQL_D_FLOAT'; |
| 1067 |
SQL_ARRAY: Result := 'SQL_ARRAY'; |
| 1068 |
SQL_QUAD: Result := 'SQL_QUAD'; |
| 1069 |
SQL_TYPE_TIME: Result := 'SQL_TYPE_TIME'; |
| 1070 |
SQL_TYPE_DATE: Result := 'SQL_TYPE_DATE'; |
| 1071 |
SQL_INT64: Result := 'SQL_INT64'; |
| 1072 |
end; |
| 1073 |
end; |
| 1074 |
|
| 1075 |
function TSQLDataItem.GetAsBoolean: boolean; |
| 1076 |
begin |
| 1077 |
CheckActive; |
| 1078 |
result := false; |
| 1079 |
if not IsNull then |
| 1080 |
begin |
| 1081 |
if SQLType = SQL_BOOLEAN then |
| 1082 |
result := PByte(SQLData)^ = ISC_TRUE |
| 1083 |
else |
| 1084 |
IBError(ibxeInvalidDataConversion, [nil]); |
| 1085 |
end |
| 1086 |
end; |
| 1087 |
|
| 1088 |
function TSQLDataItem.GetAsCurrency: Currency; |
| 1089 |
begin |
| 1090 |
CheckActive; |
| 1091 |
result := 0; |
| 1092 |
if GetSQLDialect < 3 then |
| 1093 |
result := GetAsDouble |
| 1094 |
else begin |
| 1095 |
if not IsNull then |
| 1096 |
case SQLType of |
| 1097 |
SQL_TEXT, SQL_VARYING: begin |
| 1098 |
try |
| 1099 |
result := StrtoCurr(AsString); |
| 1100 |
except |
| 1101 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]); |
| 1102 |
end; |
| 1103 |
end; |
| 1104 |
SQL_SHORT: |
| 1105 |
result := AdjustScaleToCurrency(Int64(PShort(SQLData)^), |
| 1106 |
Scale); |
| 1107 |
SQL_LONG: |
| 1108 |
result := AdjustScaleToCurrency(Int64(PLong(SQLData)^), |
| 1109 |
Scale); |
| 1110 |
SQL_INT64: |
| 1111 |
result := AdjustScaleToCurrency(PInt64(SQLData)^, |
| 1112 |
Scale); |
| 1113 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: |
| 1114 |
result := Trunc(AsDouble); |
| 1115 |
else |
| 1116 |
IBError(ibxeInvalidDataConversion, [nil]); |
| 1117 |
end; |
| 1118 |
end; |
| 1119 |
end; |
| 1120 |
|
| 1121 |
function TSQLDataItem.GetAsInt64: Int64; |
| 1122 |
begin |
| 1123 |
CheckActive; |
| 1124 |
result := 0; |
| 1125 |
if not IsNull then |
| 1126 |
case SQLType of |
| 1127 |
SQL_TEXT, SQL_VARYING: begin |
| 1128 |
try |
| 1129 |
result := StrToInt64(AsString); |
| 1130 |
except |
| 1131 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]); |
| 1132 |
end; |
| 1133 |
end; |
| 1134 |
SQL_SHORT: |
| 1135 |
result := AdjustScaleToInt64(Int64(PShort(SQLData)^), |
| 1136 |
Scale); |
| 1137 |
SQL_LONG: |
| 1138 |
result := AdjustScaleToInt64(Int64(PLong(SQLData)^), |
| 1139 |
Scale); |
| 1140 |
SQL_INT64: |
| 1141 |
result := AdjustScaleToInt64(PInt64(SQLData)^, |
| 1142 |
Scale); |
| 1143 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: |
| 1144 |
result := Trunc(AsDouble); |
| 1145 |
else |
| 1146 |
IBError(ibxeInvalidDataConversion, [nil]); |
| 1147 |
end; |
| 1148 |
end; |
| 1149 |
|
| 1150 |
function TSQLDataItem.GetAsDateTime: TDateTime; |
| 1151 |
begin |
| 1152 |
CheckActive; |
| 1153 |
result := 0; |
| 1154 |
if not IsNull then |
| 1155 |
with FirebirdClientAPI do |
| 1156 |
case SQLType of |
| 1157 |
SQL_TEXT, SQL_VARYING: begin |
| 1158 |
try |
| 1159 |
result := StrToDate(AsString); |
| 1160 |
except |
| 1161 |
on E: EConvertError do IBError(ibxeInvalidDataConversion, [nil]); |
| 1162 |
end; |
| 1163 |
end; |
| 1164 |
SQL_TYPE_DATE: |
| 1165 |
result := SQLDecodeDate(SQLData); |
| 1166 |
SQL_TYPE_TIME: |
| 1167 |
result := SQLDecodeTime(SQLData); |
| 1168 |
SQL_TIMESTAMP: |
| 1169 |
result := SQLDecodeDateTime(SQLData); |
| 1170 |
else |
| 1171 |
IBError(ibxeInvalidDataConversion, [nil]); |
| 1172 |
end; |
| 1173 |
end; |
| 1174 |
|
| 1175 |
function TSQLDataItem.GetAsDouble: Double; |
| 1176 |
begin |
| 1177 |
CheckActive; |
| 1178 |
result := 0; |
| 1179 |
if not IsNull then begin |
| 1180 |
case SQLType of |
| 1181 |
SQL_TEXT, SQL_VARYING: begin |
| 1182 |
try |
| 1183 |
result := StrToFloat(AsString); |
| 1184 |
except |
| 1185 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]); |
| 1186 |
end; |
| 1187 |
end; |
| 1188 |
SQL_SHORT: |
| 1189 |
result := AdjustScale(Int64(PShort(SQLData)^), |
| 1190 |
Scale); |
| 1191 |
SQL_LONG: |
| 1192 |
result := AdjustScale(Int64(PLong(SQLData)^), |
| 1193 |
Scale); |
| 1194 |
SQL_INT64: |
| 1195 |
result := AdjustScale(PInt64(SQLData)^, Scale); |
| 1196 |
SQL_FLOAT: |
| 1197 |
result := PFloat(SQLData)^; |
| 1198 |
SQL_DOUBLE, SQL_D_FLOAT: |
| 1199 |
result := PDouble(SQLData)^; |
| 1200 |
else |
| 1201 |
IBError(ibxeInvalidDataConversion, [nil]); |
| 1202 |
end; |
| 1203 |
if Scale <> 0 then |
| 1204 |
result := |
| 1205 |
StrToFloat(FloatToStrF(result, fffixed, 15, |
| 1206 |
Abs(Scale) )); |
| 1207 |
end; |
| 1208 |
end; |
| 1209 |
|
| 1210 |
function TSQLDataItem.GetAsFloat: Float; |
| 1211 |
begin |
| 1212 |
CheckActive; |
| 1213 |
result := 0; |
| 1214 |
try |
| 1215 |
result := AsDouble; |
| 1216 |
except |
| 1217 |
on E: EOverflow do |
| 1218 |
IBError(ibxeInvalidDataConversion, [nil]); |
| 1219 |
end; |
| 1220 |
end; |
| 1221 |
|
| 1222 |
function TSQLDataItem.GetAsLong: Long; |
| 1223 |
begin |
| 1224 |
CheckActive; |
| 1225 |
result := 0; |
| 1226 |
if not IsNull then |
| 1227 |
case SQLType of |
| 1228 |
SQL_TEXT, SQL_VARYING: begin |
| 1229 |
try |
| 1230 |
result := StrToInt(AsString); |
| 1231 |
except |
| 1232 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]); |
| 1233 |
end; |
| 1234 |
end; |
| 1235 |
SQL_SHORT: |
| 1236 |
result := Trunc(AdjustScale(Int64(PShort(SQLData)^), |
| 1237 |
Scale)); |
| 1238 |
SQL_LONG: |
| 1239 |
result := Trunc(AdjustScale(Int64(PLong(SQLData)^), |
| 1240 |
Scale)); |
| 1241 |
SQL_INT64: |
| 1242 |
result := Trunc(AdjustScale(PInt64(SQLData)^, Scale)); |
| 1243 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: |
| 1244 |
result := Trunc(AsDouble); |
| 1245 |
else |
| 1246 |
IBError(ibxeInvalidDataConversion, [nil]); |
| 1247 |
end; |
| 1248 |
end; |
| 1249 |
|
| 1250 |
function TSQLDataItem.GetAsPointer: Pointer; |
| 1251 |
begin |
| 1252 |
CheckActive; |
| 1253 |
if not IsNull then |
| 1254 |
result := SQLData |
| 1255 |
else |
| 1256 |
result := nil; |
| 1257 |
end; |
| 1258 |
|
| 1259 |
function TSQLDataItem.GetAsQuad: TISC_QUAD; |
| 1260 |
begin |
| 1261 |
CheckActive; |
| 1262 |
result.gds_quad_high := 0; |
| 1263 |
result.gds_quad_low := 0; |
| 1264 |
if not IsNull then |
| 1265 |
case SQLType of |
| 1266 |
SQL_BLOB, SQL_ARRAY, SQL_QUAD: |
| 1267 |
result := PISC_QUAD(SQLData)^; |
| 1268 |
else |
| 1269 |
IBError(ibxeInvalidDataConversion, [nil]); |
| 1270 |
end; |
| 1271 |
end; |
| 1272 |
|
| 1273 |
function TSQLDataItem.GetAsShort: short; |
| 1274 |
begin |
| 1275 |
CheckActive; |
| 1276 |
result := 0; |
| 1277 |
try |
| 1278 |
result := AsLong; |
| 1279 |
except |
| 1280 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]); |
| 1281 |
end; |
| 1282 |
end; |
| 1283 |
|
| 1284 |
|
| 1285 |
function TSQLDataItem.GetAsString: AnsiString; |
| 1286 |
var |
| 1287 |
sz: PByte; |
| 1288 |
str_len: Integer; |
| 1289 |
rs: RawByteString; |
| 1290 |
begin |
| 1291 |
CheckActive; |
| 1292 |
result := ''; |
| 1293 |
{ Check null, if so return a default string } |
| 1294 |
if not IsNull then |
| 1295 |
with FirebirdClientAPI do |
| 1296 |
case SQLType of |
| 1297 |
SQL_BOOLEAN: |
| 1298 |
if AsBoolean then |
| 1299 |
Result := sTrue |
| 1300 |
else |
| 1301 |
Result := SFalse; |
| 1302 |
|
| 1303 |
SQL_TEXT, SQL_VARYING: |
| 1304 |
begin |
| 1305 |
sz := SQLData; |
| 1306 |
if (SQLType = SQL_TEXT) then |
| 1307 |
str_len := DataLength |
| 1308 |
else begin |
| 1309 |
str_len := DecodeInteger(SQLData, 2); |
| 1310 |
Inc(sz, 2); |
| 1311 |
end; |
| 1312 |
SetString(rs, PAnsiChar(sz), str_len); |
| 1313 |
SetCodePage(rs,GetCodePage,false); |
| 1314 |
if (SQLType = SQL_TEXT) and (GetCharSetID <> 1) then |
| 1315 |
Result := TrimRight(rs) |
| 1316 |
else |
| 1317 |
Result := rs |
| 1318 |
end; |
| 1319 |
SQL_TYPE_DATE: |
| 1320 |
case GetSQLDialect of |
| 1321 |
1 : result := DateTimeToStr(AsDateTime); |
| 1322 |
3 : result := DateToStr(AsDateTime); |
| 1323 |
end; |
| 1324 |
SQL_TYPE_TIME : |
| 1325 |
result := TimeToStr(AsDateTime); |
| 1326 |
SQL_TIMESTAMP: |
| 1327 |
{$IF declared(DefaultFormatSettings)} |
| 1328 |
with DefaultFormatSettings do |
| 1329 |
{$ELSE} |
| 1330 |
{$IF declared(FormatSettings)} |
| 1331 |
with FormatSettings do |
| 1332 |
{$IFEND} |
| 1333 |
{$IFEND} |
| 1334 |
result := FormatDateTime(ShortDateFormat + ' ' + |
| 1335 |
LongTimeFormat+'.zzz',AsDateTime); |
| 1336 |
SQL_SHORT, SQL_LONG: |
| 1337 |
if Scale = 0 then |
| 1338 |
result := IntToStr(AsLong) |
| 1339 |
else if Scale >= (-4) then |
| 1340 |
result := CurrToStr(AsCurrency) |
| 1341 |
else |
| 1342 |
result := FloatToStr(AsDouble); |
| 1343 |
SQL_INT64: |
| 1344 |
if Scale = 0 then |
| 1345 |
result := IntToStr(AsInt64) |
| 1346 |
else if Scale >= (-4) then |
| 1347 |
result := CurrToStr(AsCurrency) |
| 1348 |
else |
| 1349 |
result := FloatToStr(AsDouble); |
| 1350 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: |
| 1351 |
result := FloatToStr(AsDouble); |
| 1352 |
else |
| 1353 |
IBError(ibxeInvalidDataConversion, [nil]); |
| 1354 |
end; |
| 1355 |
end; |
| 1356 |
|
| 1357 |
function TSQLDataItem.GetIsNull: Boolean; |
| 1358 |
begin |
| 1359 |
CheckActive; |
| 1360 |
Result := false; |
| 1361 |
end; |
| 1362 |
|
| 1363 |
function TSQLDataItem.getIsNullable: boolean; |
| 1364 |
begin |
| 1365 |
CheckActive; |
| 1366 |
Result := false; |
| 1367 |
end; |
| 1368 |
|
| 1369 |
function TSQLDataItem.GetAsVariant: Variant; |
| 1370 |
begin |
| 1371 |
CheckActive; |
| 1372 |
if IsNull then |
| 1373 |
result := NULL |
| 1374 |
{ Check null, if so return a default string } |
| 1375 |
else case SQLType of |
| 1376 |
SQL_ARRAY: |
| 1377 |
result := '(Array)'; {do not localize} |
| 1378 |
SQL_BLOB, |
| 1379 |
SQL_TEXT, SQL_VARYING: |
| 1380 |
result := AsString; |
| 1381 |
SQL_TIMESTAMP, SQL_TYPE_DATE, SQL_TYPE_TIME: |
| 1382 |
result := AsDateTime; |
| 1383 |
SQL_SHORT, SQL_LONG: |
| 1384 |
if Scale = 0 then |
| 1385 |
result := AsLong |
| 1386 |
else if Scale >= (-4) then |
| 1387 |
result := AsCurrency |
| 1388 |
else |
| 1389 |
result := AsDouble; |
| 1390 |
SQL_INT64: |
| 1391 |
if Scale = 0 then |
| 1392 |
result := AsInt64 |
| 1393 |
else if Scale >= (-4) then |
| 1394 |
result := AsCurrency |
| 1395 |
else |
| 1396 |
result := AsDouble; |
| 1397 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: |
| 1398 |
result := AsDouble; |
| 1399 |
SQL_BOOLEAN: |
| 1400 |
result := AsBoolean; |
| 1401 |
else |
| 1402 |
IBError(ibxeInvalidDataConversion, [nil]); |
| 1403 |
end; |
| 1404 |
end; |
| 1405 |
|
| 1406 |
function TSQLDataItem.GetModified: boolean; |
| 1407 |
begin |
| 1408 |
Result := false; |
| 1409 |
end; |
| 1410 |
|
| 1411 |
|
| 1412 |
procedure TSQLDataItem.SetIsNull(Value: Boolean); |
| 1413 |
begin |
| 1414 |
//ignore unless overridden |
| 1415 |
end; |
| 1416 |
|
| 1417 |
procedure TSQLDataItem.SetIsNullable(Value: Boolean); |
| 1418 |
begin |
| 1419 |
//ignore unless overridden |
| 1420 |
end; |
| 1421 |
|
| 1422 |
procedure TSQLDataItem.SetName(aValue: AnsiString); |
| 1423 |
begin |
| 1424 |
//ignore unless overridden |
| 1425 |
end; |
| 1426 |
|
| 1427 |
procedure TSQLDataItem.SetAsCurrency(Value: Currency); |
| 1428 |
begin |
| 1429 |
CheckActive; |
| 1430 |
if GetSQLDialect < 3 then |
| 1431 |
AsDouble := Value |
| 1432 |
else |
| 1433 |
begin |
| 1434 |
Changing; |
| 1435 |
if IsNullable then |
| 1436 |
IsNull := False; |
| 1437 |
SQLType := SQL_INT64; |
| 1438 |
Scale := -4; |
| 1439 |
DataLength := SizeOf(Int64); |
| 1440 |
PCurrency(SQLData)^ := Value; |
| 1441 |
Changed; |
| 1442 |
end; |
| 1443 |
end; |
| 1444 |
|
| 1445 |
procedure TSQLDataItem.SetAsInt64(Value: Int64); |
| 1446 |
begin |
| 1447 |
CheckActive; |
| 1448 |
Changing; |
| 1449 |
if IsNullable then |
| 1450 |
IsNull := False; |
| 1451 |
|
| 1452 |
SQLType := SQL_INT64; |
| 1453 |
Scale := 0; |
| 1454 |
DataLength := SizeOf(Int64); |
| 1455 |
PInt64(SQLData)^ := Value; |
| 1456 |
Changed; |
| 1457 |
end; |
| 1458 |
|
| 1459 |
procedure TSQLDataItem.SetAsDate(Value: TDateTime); |
| 1460 |
begin |
| 1461 |
CheckActive; |
| 1462 |
if GetSQLDialect < 3 then |
| 1463 |
begin |
| 1464 |
AsDateTime := Value; |
| 1465 |
exit; |
| 1466 |
end; |
| 1467 |
|
| 1468 |
Changing; |
| 1469 |
if IsNullable then |
| 1470 |
IsNull := False; |
| 1471 |
|
| 1472 |
SQLType := SQL_TYPE_DATE; |
| 1473 |
DataLength := SizeOf(ISC_DATE); |
| 1474 |
with FirebirdClientAPI do |
| 1475 |
SQLEncodeDate(Value,SQLData); |
| 1476 |
Changed; |
| 1477 |
end; |
| 1478 |
|
| 1479 |
procedure TSQLDataItem.SetAsTime(Value: TDateTime); |
| 1480 |
begin |
| 1481 |
CheckActive; |
| 1482 |
if GetSQLDialect < 3 then |
| 1483 |
begin |
| 1484 |
AsDateTime := Value; |
| 1485 |
exit; |
| 1486 |
end; |
| 1487 |
|
| 1488 |
Changing; |
| 1489 |
if IsNullable then |
| 1490 |
IsNull := False; |
| 1491 |
|
| 1492 |
SQLType := SQL_TYPE_TIME; |
| 1493 |
DataLength := SizeOf(ISC_TIME); |
| 1494 |
with FirebirdClientAPI do |
| 1495 |
SQLEncodeTime(Value,SQLData); |
| 1496 |
Changed; |
| 1497 |
end; |
| 1498 |
|
| 1499 |
procedure TSQLDataItem.SetAsDateTime(Value: TDateTime); |
| 1500 |
begin |
| 1501 |
CheckActive; |
| 1502 |
if IsNullable then |
| 1503 |
IsNull := False; |
| 1504 |
|
| 1505 |
Changing; |
| 1506 |
SQLType := SQL_TIMESTAMP; |
| 1507 |
DataLength := SizeOf(ISC_TIME) + sizeof(ISC_DATE); |
| 1508 |
with FirebirdClientAPI do |
| 1509 |
SQLEncodeDateTime(Value,SQLData); |
| 1510 |
Changed; |
| 1511 |
end; |
| 1512 |
|
| 1513 |
procedure TSQLDataItem.SetAsDouble(Value: Double); |
| 1514 |
begin |
| 1515 |
CheckActive; |
| 1516 |
if IsNullable then |
| 1517 |
IsNull := False; |
| 1518 |
|
| 1519 |
Changing; |
| 1520 |
SQLType := SQL_DOUBLE; |
| 1521 |
DataLength := SizeOf(Double); |
| 1522 |
Scale := 0; |
| 1523 |
PDouble(SQLData)^ := Value; |
| 1524 |
Changed; |
| 1525 |
end; |
| 1526 |
|
| 1527 |
procedure TSQLDataItem.SetAsFloat(Value: Float); |
| 1528 |
begin |
| 1529 |
CheckActive; |
| 1530 |
if IsNullable then |
| 1531 |
IsNull := False; |
| 1532 |
|
| 1533 |
Changing; |
| 1534 |
SQLType := SQL_FLOAT; |
| 1535 |
DataLength := SizeOf(Float); |
| 1536 |
Scale := 0; |
| 1537 |
PSingle(SQLData)^ := Value; |
| 1538 |
Changed; |
| 1539 |
end; |
| 1540 |
|
| 1541 |
procedure TSQLDataItem.SetAsLong(Value: Long); |
| 1542 |
begin |
| 1543 |
CheckActive; |
| 1544 |
if IsNullable then |
| 1545 |
IsNull := False; |
| 1546 |
|
| 1547 |
Changing; |
| 1548 |
SQLType := SQL_LONG; |
| 1549 |
DataLength := SizeOf(Long); |
| 1550 |
Scale := 0; |
| 1551 |
PLong(SQLData)^ := Value; |
| 1552 |
Changed; |
| 1553 |
end; |
| 1554 |
|
| 1555 |
procedure TSQLDataItem.SetAsPointer(Value: Pointer); |
| 1556 |
begin |
| 1557 |
CheckActive; |
| 1558 |
Changing; |
| 1559 |
if IsNullable and (Value = nil) then |
| 1560 |
IsNull := True |
| 1561 |
else |
| 1562 |
begin |
| 1563 |
IsNull := False; |
| 1564 |
SQLType := SQL_TEXT; |
| 1565 |
Move(Value^, SQLData^, DataLength); |
| 1566 |
end; |
| 1567 |
Changed; |
| 1568 |
end; |
| 1569 |
|
| 1570 |
procedure TSQLDataItem.SetAsQuad(Value: TISC_QUAD); |
| 1571 |
begin |
| 1572 |
CheckActive; |
| 1573 |
Changing; |
| 1574 |
if IsNullable then |
| 1575 |
IsNull := False; |
| 1576 |
if (SQLType <> SQL_BLOB) and |
| 1577 |
(SQLType <> SQL_ARRAY) then |
| 1578 |
IBError(ibxeInvalidDataConversion, [nil]); |
| 1579 |
DataLength := SizeOf(TISC_QUAD); |
| 1580 |
PISC_QUAD(SQLData)^ := Value; |
| 1581 |
Changed; |
| 1582 |
end; |
| 1583 |
|
| 1584 |
procedure TSQLDataItem.SetAsShort(Value: short); |
| 1585 |
begin |
| 1586 |
CheckActive; |
| 1587 |
Changing; |
| 1588 |
if IsNullable then |
| 1589 |
IsNull := False; |
| 1590 |
|
| 1591 |
SQLType := SQL_SHORT; |
| 1592 |
DataLength := SizeOf(Short); |
| 1593 |
Scale := 0; |
| 1594 |
PShort(SQLData)^ := Value; |
| 1595 |
Changed; |
| 1596 |
end; |
| 1597 |
|
| 1598 |
procedure TSQLDataItem.SetAsString(Value: AnsiString); |
| 1599 |
begin |
| 1600 |
InternalSetAsString(Value); |
| 1601 |
end; |
| 1602 |
|
| 1603 |
procedure TSQLDataItem.SetAsVariant(Value: Variant); |
| 1604 |
begin |
| 1605 |
CheckActive; |
| 1606 |
if VarIsNull(Value) then |
| 1607 |
IsNull := True |
| 1608 |
else case VarType(Value) of |
| 1609 |
varEmpty, varNull: |
| 1610 |
IsNull := True; |
| 1611 |
varSmallint, varInteger, varByte, |
| 1612 |
varWord, varShortInt: |
| 1613 |
AsLong := Value; |
| 1614 |
varInt64: |
| 1615 |
AsInt64 := Value; |
| 1616 |
varSingle, varDouble: |
| 1617 |
AsDouble := Value; |
| 1618 |
varCurrency: |
| 1619 |
AsCurrency := Value; |
| 1620 |
varBoolean: |
| 1621 |
AsBoolean := Value; |
| 1622 |
varDate: |
| 1623 |
AsDateTime := Value; |
| 1624 |
varOleStr, varString: |
| 1625 |
AsString := Value; |
| 1626 |
varArray: |
| 1627 |
IBError(ibxeNotSupported, [nil]); |
| 1628 |
varByRef, varDispatch, varError, varUnknown, varVariant: |
| 1629 |
IBError(ibxeNotPermitted, [nil]); |
| 1630 |
end; |
| 1631 |
end; |
| 1632 |
|
| 1633 |
procedure TSQLDataItem.SetAsNumeric(Value: Int64; aScale: integer); |
| 1634 |
begin |
| 1635 |
CheckActive; |
| 1636 |
Changing; |
| 1637 |
if IsNullable then |
| 1638 |
IsNull := False; |
| 1639 |
|
| 1640 |
SQLType := SQL_INT64; |
| 1641 |
Scale := aScale; |
| 1642 |
DataLength := SizeOf(Int64); |
| 1643 |
PInt64(SQLData)^ := Value; |
| 1644 |
Changed; |
| 1645 |
end; |
| 1646 |
|
| 1647 |
procedure TSQLDataItem.SetAsBoolean(AValue: boolean); |
| 1648 |
begin |
| 1649 |
CheckActive; |
| 1650 |
Changing; |
| 1651 |
if IsNullable then |
| 1652 |
IsNull := False; |
| 1653 |
|
| 1654 |
SQLType := SQL_BOOLEAN; |
| 1655 |
DataLength := 1; |
| 1656 |
Scale := 0; |
| 1657 |
if AValue then |
| 1658 |
PByte(SQLData)^ := ISC_TRUE |
| 1659 |
else |
| 1660 |
PByte(SQLData)^ := ISC_FALSE; |
| 1661 |
Changed; |
| 1662 |
end; |
| 1663 |
|
| 1664 |
{TColumnMetaData} |
| 1665 |
|
| 1666 |
procedure TColumnMetaData.CheckActive; |
| 1667 |
begin |
| 1668 |
if not FIBXSQLVAR.Parent.StateChanged(FChangeSeqNo) then Exit; |
| 1669 |
|
| 1670 |
if FPrepareSeqNo < FIBXSQLVAR.Parent.GetPrepareSeqNo then |
| 1671 |
IBError(ibxeInterfaceOutofDate,[nil]); |
| 1672 |
|
| 1673 |
if not FIBXSQLVAR.Parent.CheckStatementStatus(ssPrepared) then |
| 1674 |
IBError(ibxeStatementNotPrepared, [nil]); |
| 1675 |
end; |
| 1676 |
|
| 1677 |
function TColumnMetaData.SQLData: PByte; |
| 1678 |
begin |
| 1679 |
Result := FIBXSQLVAR.SQLData; |
| 1680 |
end; |
| 1681 |
|
| 1682 |
function TColumnMetaData.GetDataLength: cardinal; |
| 1683 |
begin |
| 1684 |
Result := FIBXSQLVAR.DataLength; |
| 1685 |
end; |
| 1686 |
|
| 1687 |
function TColumnMetaData.GetCodePage: TSystemCodePage; |
| 1688 |
begin |
| 1689 |
Result := FIBXSQLVAR.GetCodePage; |
| 1690 |
end; |
| 1691 |
|
| 1692 |
constructor TColumnMetaData.Create(aOwner: IUnknown; aIBXSQLVAR: TSQLVarData); |
| 1693 |
begin |
| 1694 |
inherited Create; |
| 1695 |
FIBXSQLVAR := aIBXSQLVAR; |
| 1696 |
FOwner := aOwner; |
| 1697 |
FPrepareSeqNo := FIBXSQLVAR.Parent.PrepareSeqNo; |
| 1698 |
FIBXSQLVAR.Parent.StateChanged(FChangeSeqNo) |
| 1699 |
end; |
| 1700 |
|
| 1701 |
destructor TColumnMetaData.Destroy; |
| 1702 |
begin |
| 1703 |
(FOwner as TInterfaceOwner).Remove(self); |
| 1704 |
inherited Destroy; |
| 1705 |
end; |
| 1706 |
|
| 1707 |
|
| 1708 |
function TColumnMetaData.GetSQLDialect: integer; |
| 1709 |
begin |
| 1710 |
Result := FIBXSQLVAR.Statement.GetSQLDialect; |
| 1711 |
end; |
| 1712 |
|
| 1713 |
function TColumnMetaData.GetIndex: integer; |
| 1714 |
begin |
| 1715 |
Result := FIBXSQLVAR.Index; |
| 1716 |
end; |
| 1717 |
|
| 1718 |
function TColumnMetaData.GetSQLType: cardinal; |
| 1719 |
begin |
| 1720 |
CheckActive; |
| 1721 |
result := FIBXSQLVAR.SQLType; |
| 1722 |
end; |
| 1723 |
|
| 1724 |
function TColumnMetaData.getSubtype: integer; |
| 1725 |
begin |
| 1726 |
CheckActive; |
| 1727 |
result := FIBXSQLVAR.SQLSubtype; |
| 1728 |
end; |
| 1729 |
|
| 1730 |
function TColumnMetaData.getRelationName: AnsiString; |
| 1731 |
begin |
| 1732 |
CheckActive; |
| 1733 |
result := FIBXSQLVAR.RelationName; |
| 1734 |
end; |
| 1735 |
|
| 1736 |
function TColumnMetaData.getOwnerName: AnsiString; |
| 1737 |
begin |
| 1738 |
CheckActive; |
| 1739 |
result := FIBXSQLVAR.OwnerName; |
| 1740 |
end; |
| 1741 |
|
| 1742 |
function TColumnMetaData.getSQLName: AnsiString; |
| 1743 |
begin |
| 1744 |
CheckActive; |
| 1745 |
result := FIBXSQLVAR.FieldName; |
| 1746 |
end; |
| 1747 |
|
| 1748 |
function TColumnMetaData.getAliasName: AnsiString; |
| 1749 |
begin |
| 1750 |
CheckActive; |
| 1751 |
result := FIBXSQLVAR.AliasName; |
| 1752 |
end; |
| 1753 |
|
| 1754 |
function TColumnMetaData.GetName: AnsiString; |
| 1755 |
begin |
| 1756 |
CheckActive; |
| 1757 |
Result := FIBXSQLVAR. Name; |
| 1758 |
end; |
| 1759 |
|
| 1760 |
function TColumnMetaData.GetScale: integer; |
| 1761 |
begin |
| 1762 |
CheckActive; |
| 1763 |
result := FIBXSQLVAR.Scale; |
| 1764 |
end; |
| 1765 |
|
| 1766 |
function TColumnMetaData.getCharSetID: cardinal; |
| 1767 |
begin |
| 1768 |
CheckActive; |
| 1769 |
Result := FIBXSQLVAR.CharSetID; |
| 1770 |
end; |
| 1771 |
|
| 1772 |
function TColumnMetaData.GetIsNullable: boolean; |
| 1773 |
begin |
| 1774 |
CheckActive; |
| 1775 |
result := FIBXSQLVAR.IsNullable; |
| 1776 |
end; |
| 1777 |
|
| 1778 |
function TColumnMetaData.GetSize: cardinal; |
| 1779 |
begin |
| 1780 |
CheckActive; |
| 1781 |
result := FIBXSQLVAR.DataLength; |
| 1782 |
end; |
| 1783 |
|
| 1784 |
function TColumnMetaData.GetArrayMetaData: IArrayMetaData; |
| 1785 |
begin |
| 1786 |
CheckActive; |
| 1787 |
result := FIBXSQLVAR.GetArrayMetaData; |
| 1788 |
end; |
| 1789 |
|
| 1790 |
function TColumnMetaData.GetBlobMetaData: IBlobMetaData; |
| 1791 |
begin |
| 1792 |
CheckActive; |
| 1793 |
result := FIBXSQLVAR.GetBlobMetaData; |
| 1794 |
end; |
| 1795 |
|
| 1796 |
{ TIBSQLData } |
| 1797 |
|
| 1798 |
procedure TIBSQLData.CheckActive; |
| 1799 |
begin |
| 1800 |
if not FIBXSQLVAR.Parent.StateChanged(FChangeSeqNo) then Exit; |
| 1801 |
|
| 1802 |
inherited CheckActive; |
| 1803 |
|
| 1804 |
if not FIBXSQLVAR.Parent.CheckStatementStatus(ssCursorOpen) and |
| 1805 |
not FIBXSQLVAR.Parent.CheckStatementStatus(ssExecuteResults) then |
| 1806 |
IBError(ibxeSQLClosed, [nil]); |
| 1807 |
|
| 1808 |
if FIBXSQLVAR.Parent.CheckStatementStatus(ssEOF) then |
| 1809 |
IBError(ibxeEOF,[nil]); |
| 1810 |
|
| 1811 |
if FIBXSQLVAR.Parent.CheckStatementStatus(ssBOF) then |
| 1812 |
IBError(ibxeBOF,[nil]); |
| 1813 |
end; |
| 1814 |
|
| 1815 |
function TIBSQLData.GetIsNull: Boolean; |
| 1816 |
begin |
| 1817 |
CheckActive; |
| 1818 |
result := FIBXSQLVAR.IsNull; |
| 1819 |
end; |
| 1820 |
|
| 1821 |
function TIBSQLData.GetAsArray: IArray; |
| 1822 |
begin |
| 1823 |
CheckActive; |
| 1824 |
result := FIBXSQLVAR.GetAsArray(AsQuad); |
| 1825 |
end; |
| 1826 |
|
| 1827 |
function TIBSQLData.GetAsBlob: IBlob; |
| 1828 |
begin |
| 1829 |
CheckActive; |
| 1830 |
result := FIBXSQLVAR.GetAsBlob(AsQuad,nil); |
| 1831 |
end; |
| 1832 |
|
| 1833 |
function TIBSQLData.GetAsBlob(BPB: IBPB): IBlob; |
| 1834 |
begin |
| 1835 |
CheckActive; |
| 1836 |
result := FIBXSQLVAR.GetAsBlob(AsQuad,BPB); |
| 1837 |
end; |
| 1838 |
|
| 1839 |
function TIBSQLData.GetAsString: AnsiString; |
| 1840 |
begin |
| 1841 |
CheckActive; |
| 1842 |
Result := ''; |
| 1843 |
{ Check null, if so return a default string } |
| 1844 |
if not IsNull then |
| 1845 |
case SQLType of |
| 1846 |
SQL_ARRAY: |
| 1847 |
result := SArray; |
| 1848 |
SQL_BLOB: |
| 1849 |
Result := FIBXSQLVAR.GetAsBlob(AsQuad,nil).GetAsString; |
| 1850 |
else |
| 1851 |
Result := inherited GetAsString; |
| 1852 |
end; |
| 1853 |
end; |
| 1854 |
|
| 1855 |
{ TSQLParam } |
| 1856 |
|
| 1857 |
procedure TSQLParam.InternalSetAsString(Value: AnsiString); |
| 1858 |
var b: IBlob; |
| 1859 |
dt: TDateTime; |
| 1860 |
begin |
| 1861 |
CheckActive; |
| 1862 |
if IsNullable then |
| 1863 |
IsNull := False; |
| 1864 |
case SQLTYPE of |
| 1865 |
SQL_BOOLEAN: |
| 1866 |
if AnsiCompareText(Value,STrue) = 0 then |
| 1867 |
AsBoolean := true |
| 1868 |
else |
| 1869 |
if AnsiCompareText(Value,SFalse) = 0 then |
| 1870 |
AsBoolean := false |
| 1871 |
else |
| 1872 |
IBError(ibxeInvalidDataConversion,[nil]); |
| 1873 |
|
| 1874 |
SQL_BLOB: |
| 1875 |
begin |
| 1876 |
Changing; |
| 1877 |
b := FIBXSQLVAR.CreateBlob; |
| 1878 |
b.SetAsString(Value); |
| 1879 |
AsBlob := b; |
| 1880 |
Changed; |
| 1881 |
end; |
| 1882 |
|
| 1883 |
SQL_VARYING, |
| 1884 |
SQL_TEXT: |
| 1885 |
begin |
| 1886 |
Changing; |
| 1887 |
FIBXSQLVar.SetString(Transliterate(Value,GetCodePage)); |
| 1888 |
Changed; |
| 1889 |
end; |
| 1890 |
|
| 1891 |
SQL_SHORT, |
| 1892 |
SQL_LONG, |
| 1893 |
SQL_INT64: |
| 1894 |
SetAsNumeric(AdjustScaleFromCurrency(StrToCurr(Value),GetScale),GetScale); |
| 1895 |
|
| 1896 |
SQL_D_FLOAT, |
| 1897 |
SQL_DOUBLE, |
| 1898 |
SQL_FLOAT: |
| 1899 |
SetAsDouble(StrToFloat(Value)); |
| 1900 |
|
| 1901 |
SQL_TIMESTAMP: |
| 1902 |
if TryStrToDateTime(Value,dt) then |
| 1903 |
SetAsDateTime(dt) |
| 1904 |
else |
| 1905 |
FIBXSQLVar.SetString(Value); |
| 1906 |
|
| 1907 |
SQL_TYPE_DATE: |
| 1908 |
if TryStrToDateTime(Value,dt) then |
| 1909 |
SetAsDate(dt) |
| 1910 |
else |
| 1911 |
FIBXSQLVar.SetString(Value); |
| 1912 |
|
| 1913 |
SQL_TYPE_TIME: |
| 1914 |
if TryStrToDateTime(Value,dt) then |
| 1915 |
SetAsTime(dt) |
| 1916 |
else |
| 1917 |
FIBXSQLVar.SetString(Value); |
| 1918 |
|
| 1919 |
else |
| 1920 |
IBError(ibxeInvalidDataConversion,[nil]); |
| 1921 |
end; |
| 1922 |
end; |
| 1923 |
|
| 1924 |
procedure TSQLParam.CheckActive; |
| 1925 |
begin |
| 1926 |
if not FIBXSQLVAR.Parent.StateChanged(FChangeSeqNo) then Exit; |
| 1927 |
|
| 1928 |
if FPrepareSeqNo < FIBXSQLVAR.Parent.GetPrepareSeqNo then |
| 1929 |
IBError(ibxeInterfaceOutofDate,[nil]); |
| 1930 |
|
| 1931 |
if not FIBXSQLVAR.Parent.CheckStatementStatus(ssPrepared) then |
| 1932 |
IBError(ibxeStatementNotPrepared, [nil]); |
| 1933 |
end; |
| 1934 |
|
| 1935 |
procedure TSQLParam.SetScale(aValue: integer); |
| 1936 |
begin |
| 1937 |
CheckActive; |
| 1938 |
FIBXSQLVAR.Scale := aValue; |
| 1939 |
end; |
| 1940 |
|
| 1941 |
procedure TSQLParam.SetDataLength(len: cardinal); |
| 1942 |
begin |
| 1943 |
CheckActive; |
| 1944 |
FIBXSQLVAR.DataLength := len; |
| 1945 |
end; |
| 1946 |
|
| 1947 |
procedure TSQLParam.SetSQLType(aValue: cardinal); |
| 1948 |
begin |
| 1949 |
CheckActive; |
| 1950 |
FIBXSQLVAR.SQLType := aValue; |
| 1951 |
end; |
| 1952 |
|
| 1953 |
procedure TSQLParam.Clear; |
| 1954 |
begin |
| 1955 |
IsNull := true; |
| 1956 |
end; |
| 1957 |
|
| 1958 |
function TSQLParam.GetModified: boolean; |
| 1959 |
begin |
| 1960 |
CheckActive; |
| 1961 |
Result := FIBXSQLVAR.Modified; |
| 1962 |
end; |
| 1963 |
|
| 1964 |
function TSQLParam.GetAsPointer: Pointer; |
| 1965 |
begin |
| 1966 |
IsNull := false; {Assume that we get the pointer in order to set a value} |
| 1967 |
Changed; |
| 1968 |
Result := inherited GetAsPointer; |
| 1969 |
end; |
| 1970 |
|
| 1971 |
procedure TSQLParam.SetName(Value: AnsiString); |
| 1972 |
begin |
| 1973 |
CheckActive; |
| 1974 |
FIBXSQLVAR.Name := Value; |
| 1975 |
end; |
| 1976 |
|
| 1977 |
procedure TSQLParam.SetIsNull(Value: Boolean); |
| 1978 |
var i: integer; |
| 1979 |
begin |
| 1980 |
CheckActive; |
| 1981 |
if FIBXSQLVAR.UniqueName then |
| 1982 |
FIBXSQLVAR.IsNull := Value |
| 1983 |
else |
| 1984 |
with FIBXSQLVAR.Parent do |
| 1985 |
begin |
| 1986 |
for i := 0 to Count - 1 do |
| 1987 |
if Column[i].Name = Name then |
| 1988 |
Column[i].IsNull := Value; |
| 1989 |
end |
| 1990 |
end; |
| 1991 |
|
| 1992 |
procedure TSQLParam.SetIsNullable(Value: Boolean); |
| 1993 |
var i: integer; |
| 1994 |
begin |
| 1995 |
CheckActive; |
| 1996 |
if FIBXSQLVAR.UniqueName then |
| 1997 |
FIBXSQLVAR.IsNullable := Value |
| 1998 |
else |
| 1999 |
with FIBXSQLVAR.Parent do |
| 2000 |
begin |
| 2001 |
for i := 0 to Count - 1 do |
| 2002 |
if Column[i].Name = Name then |
| 2003 |
Column[i].IsNullable := Value; |
| 2004 |
end |
| 2005 |
end; |
| 2006 |
|
| 2007 |
procedure TSQLParam.SetAsArray(anArray: IArray); |
| 2008 |
begin |
| 2009 |
CheckActive; |
| 2010 |
if GetSQLType <> SQL_ARRAY then |
| 2011 |
IBError(ibxeInvalidDataConversion,[nil]); |
| 2012 |
|
| 2013 |
if not FIBXSQLVAR.UniqueName then |
| 2014 |
IBError(ibxeDuplicateParamName,[FIBXSQLVAR.Name]); |
| 2015 |
|
| 2016 |
SetAsQuad(AnArray.GetArrayID); |
| 2017 |
end; |
| 2018 |
|
| 2019 |
procedure TSQLParam.Changed; |
| 2020 |
begin |
| 2021 |
FIBXSQLVAR.Changed; |
| 2022 |
end; |
| 2023 |
|
| 2024 |
procedure TSQLParam.SetAsBoolean(AValue: boolean); |
| 2025 |
var i: integer; |
| 2026 |
OldSQLVar: TSQLVarData; |
| 2027 |
begin |
| 2028 |
if FIBXSQLVAR.UniqueName then |
| 2029 |
inherited SetAsBoolean(AValue) |
| 2030 |
else |
| 2031 |
with FIBXSQLVAR.Parent do |
| 2032 |
begin |
| 2033 |
for i := 0 to Count - 1 do |
| 2034 |
if Column[i].Name = Name then |
| 2035 |
begin |
| 2036 |
OldSQLVar := FIBXSQLVAR; |
| 2037 |
FIBXSQLVAR := Column[i]; |
| 2038 |
try |
| 2039 |
inherited SetAsBoolean(AValue); |
| 2040 |
finally |
| 2041 |
FIBXSQLVAR := OldSQLVar; |
| 2042 |
end; |
| 2043 |
end; |
| 2044 |
end; |
| 2045 |
end; |
| 2046 |
|
| 2047 |
procedure TSQLParam.SetAsCurrency(AValue: Currency); |
| 2048 |
var i: integer; |
| 2049 |
OldSQLVar: TSQLVarData; |
| 2050 |
begin |
| 2051 |
if FIBXSQLVAR.UniqueName then |
| 2052 |
inherited SetAsCurrency(AValue) |
| 2053 |
else |
| 2054 |
with FIBXSQLVAR.Parent do |
| 2055 |
begin |
| 2056 |
for i := 0 to Count - 1 do |
| 2057 |
if Column[i].Name = Name then |
| 2058 |
begin |
| 2059 |
OldSQLVar := FIBXSQLVAR; |
| 2060 |
FIBXSQLVAR := Column[i]; |
| 2061 |
try |
| 2062 |
inherited SetAsCurrency(AValue); |
| 2063 |
finally |
| 2064 |
FIBXSQLVAR := OldSQLVar; |
| 2065 |
end; |
| 2066 |
end; |
| 2067 |
end; |
| 2068 |
end; |
| 2069 |
|
| 2070 |
procedure TSQLParam.SetAsInt64(AValue: Int64); |
| 2071 |
var i: integer; |
| 2072 |
OldSQLVar: TSQLVarData; |
| 2073 |
begin |
| 2074 |
if FIBXSQLVAR.UniqueName then |
| 2075 |
inherited SetAsInt64(AValue) |
| 2076 |
else |
| 2077 |
with FIBXSQLVAR.Parent do |
| 2078 |
begin |
| 2079 |
for i := 0 to Count - 1 do |
| 2080 |
if Column[i].Name = Name then |
| 2081 |
begin |
| 2082 |
OldSQLVar := FIBXSQLVAR; |
| 2083 |
FIBXSQLVAR := Column[i]; |
| 2084 |
try |
| 2085 |
inherited SetAsInt64(AValue); |
| 2086 |
finally |
| 2087 |
FIBXSQLVAR := OldSQLVar; |
| 2088 |
end; |
| 2089 |
end; |
| 2090 |
end; |
| 2091 |
end; |
| 2092 |
|
| 2093 |
procedure TSQLParam.SetAsDate(AValue: TDateTime); |
| 2094 |
var i: integer; |
| 2095 |
OldSQLVar: TSQLVarData; |
| 2096 |
begin |
| 2097 |
if FIBXSQLVAR.UniqueName then |
| 2098 |
inherited SetAsDate(AValue) |
| 2099 |
else |
| 2100 |
with FIBXSQLVAR.Parent do |
| 2101 |
begin |
| 2102 |
for i := 0 to Count - 1 do |
| 2103 |
if Column[i].Name = Name then |
| 2104 |
begin |
| 2105 |
OldSQLVar := FIBXSQLVAR; |
| 2106 |
FIBXSQLVAR := Column[i]; |
| 2107 |
try |
| 2108 |
inherited SetAsDate(AValue); |
| 2109 |
finally |
| 2110 |
FIBXSQLVAR := OldSQLVar; |
| 2111 |
end; |
| 2112 |
end; |
| 2113 |
end; |
| 2114 |
end; |
| 2115 |
|
| 2116 |
procedure TSQLParam.SetAsLong(AValue: Long); |
| 2117 |
var i: integer; |
| 2118 |
OldSQLVar: TSQLVarData; |
| 2119 |
begin |
| 2120 |
if FIBXSQLVAR.UniqueName then |
| 2121 |
inherited SetAsLong(AValue) |
| 2122 |
else |
| 2123 |
with FIBXSQLVAR.Parent do |
| 2124 |
begin |
| 2125 |
for i := 0 to Count - 1 do |
| 2126 |
if Column[i].Name = Name then |
| 2127 |
begin |
| 2128 |
OldSQLVar := FIBXSQLVAR; |
| 2129 |
FIBXSQLVAR := Column[i]; |
| 2130 |
try |
| 2131 |
inherited SetAsLong(AValue); |
| 2132 |
finally |
| 2133 |
FIBXSQLVAR := OldSQLVar; |
| 2134 |
end; |
| 2135 |
end; |
| 2136 |
end; |
| 2137 |
end; |
| 2138 |
|
| 2139 |
procedure TSQLParam.SetAsTime(AValue: TDateTime); |
| 2140 |
var i: integer; |
| 2141 |
OldSQLVar: TSQLVarData; |
| 2142 |
begin |
| 2143 |
if FIBXSQLVAR.UniqueName then |
| 2144 |
inherited SetAsTime(AValue) |
| 2145 |
else |
| 2146 |
with FIBXSQLVAR.Parent do |
| 2147 |
begin |
| 2148 |
for i := 0 to Count - 1 do |
| 2149 |
if Column[i].Name = Name then |
| 2150 |
begin |
| 2151 |
OldSQLVar := FIBXSQLVAR; |
| 2152 |
FIBXSQLVAR := Column[i]; |
| 2153 |
try |
| 2154 |
inherited SetAsTime(AValue); |
| 2155 |
finally |
| 2156 |
FIBXSQLVAR := OldSQLVar; |
| 2157 |
end; |
| 2158 |
end; |
| 2159 |
end; |
| 2160 |
end; |
| 2161 |
|
| 2162 |
procedure TSQLParam.SetAsDateTime(AValue: TDateTime); |
| 2163 |
var i: integer; |
| 2164 |
OldSQLVar: TSQLVarData; |
| 2165 |
begin |
| 2166 |
if FIBXSQLVAR.UniqueName then |
| 2167 |
inherited SetAsDateTime(AValue) |
| 2168 |
else |
| 2169 |
with FIBXSQLVAR.Parent do |
| 2170 |
begin |
| 2171 |
for i := 0 to Count - 1 do |
| 2172 |
if Column[i].Name = Name then |
| 2173 |
begin |
| 2174 |
OldSQLVar := FIBXSQLVAR; |
| 2175 |
FIBXSQLVAR := Column[i]; |
| 2176 |
try |
| 2177 |
inherited SetAsDateTime(AValue); |
| 2178 |
finally |
| 2179 |
FIBXSQLVAR := OldSQLVar; |
| 2180 |
end; |
| 2181 |
end; |
| 2182 |
end; |
| 2183 |
end; |
| 2184 |
|
| 2185 |
procedure TSQLParam.SetAsDouble(AValue: Double); |
| 2186 |
var i: integer; |
| 2187 |
OldSQLVar: TSQLVarData; |
| 2188 |
begin |
| 2189 |
if FIBXSQLVAR.UniqueName then |
| 2190 |
inherited SetAsDouble(AValue) |
| 2191 |
else |
| 2192 |
with FIBXSQLVAR.Parent do |
| 2193 |
begin |
| 2194 |
for i := 0 to Count - 1 do |
| 2195 |
if Column[i].Name = Name then |
| 2196 |
begin |
| 2197 |
OldSQLVar := FIBXSQLVAR; |
| 2198 |
FIBXSQLVAR := Column[i]; |
| 2199 |
try |
| 2200 |
inherited SetAsDouble(AValue); |
| 2201 |
finally |
| 2202 |
FIBXSQLVAR := OldSQLVar; |
| 2203 |
end; |
| 2204 |
end; |
| 2205 |
end; |
| 2206 |
end; |
| 2207 |
|
| 2208 |
procedure TSQLParam.SetAsFloat(AValue: Float); |
| 2209 |
var i: integer; |
| 2210 |
OldSQLVar: TSQLVarData; |
| 2211 |
begin |
| 2212 |
if FIBXSQLVAR.UniqueName then |
| 2213 |
inherited SetAsFloat(AValue) |
| 2214 |
else |
| 2215 |
with FIBXSQLVAR.Parent do |
| 2216 |
begin |
| 2217 |
for i := 0 to Count - 1 do |
| 2218 |
if Column[i].Name = Name then |
| 2219 |
begin |
| 2220 |
OldSQLVar := FIBXSQLVAR; |
| 2221 |
FIBXSQLVAR := Column[i]; |
| 2222 |
try |
| 2223 |
inherited SetAsFloat(AValue); |
| 2224 |
finally |
| 2225 |
FIBXSQLVAR := OldSQLVar; |
| 2226 |
end; |
| 2227 |
end; |
| 2228 |
end; |
| 2229 |
end; |
| 2230 |
|
| 2231 |
procedure TSQLParam.SetAsPointer(AValue: Pointer); |
| 2232 |
var i: integer; |
| 2233 |
OldSQLVar: TSQLVarData; |
| 2234 |
begin |
| 2235 |
if FIBXSQLVAR.UniqueName then |
| 2236 |
inherited SetAsPointer(AValue) |
| 2237 |
else |
| 2238 |
with FIBXSQLVAR.Parent do |
| 2239 |
begin |
| 2240 |
for i := 0 to Count - 1 do |
| 2241 |
if Column[i].Name = Name then |
| 2242 |
begin |
| 2243 |
OldSQLVar := FIBXSQLVAR; |
| 2244 |
FIBXSQLVAR := Column[i]; |
| 2245 |
try |
| 2246 |
inherited SetAsPointer(AValue); |
| 2247 |
finally |
| 2248 |
FIBXSQLVAR := OldSQLVar; |
| 2249 |
end; |
| 2250 |
end; |
| 2251 |
end; |
| 2252 |
end; |
| 2253 |
|
| 2254 |
procedure TSQLParam.SetAsShort(AValue: Short); |
| 2255 |
var i: integer; |
| 2256 |
OldSQLVar: TSQLVarData; |
| 2257 |
begin |
| 2258 |
if FIBXSQLVAR.UniqueName then |
| 2259 |
inherited SetAsShort(AValue) |
| 2260 |
else |
| 2261 |
with FIBXSQLVAR.Parent do |
| 2262 |
begin |
| 2263 |
for i := 0 to Count - 1 do |
| 2264 |
if Column[i].Name = Name then |
| 2265 |
begin |
| 2266 |
OldSQLVar := FIBXSQLVAR; |
| 2267 |
FIBXSQLVAR := Column[i]; |
| 2268 |
try |
| 2269 |
inherited SetAsShort(AValue); |
| 2270 |
finally |
| 2271 |
FIBXSQLVAR := OldSQLVar; |
| 2272 |
end; |
| 2273 |
end; |
| 2274 |
end; |
| 2275 |
end; |
| 2276 |
|
| 2277 |
procedure TSQLParam.SetAsString(AValue: AnsiString); |
| 2278 |
var i: integer; |
| 2279 |
OldSQLVar: TSQLVarData; |
| 2280 |
begin |
| 2281 |
if FIBXSQLVAR.UniqueName then |
| 2282 |
InternalSetAsString(AValue) |
| 2283 |
else |
| 2284 |
with FIBXSQLVAR.Parent do |
| 2285 |
begin |
| 2286 |
for i := 0 to Count - 1 do |
| 2287 |
if Column[i].Name = Name then |
| 2288 |
begin |
| 2289 |
OldSQLVar := FIBXSQLVAR; |
| 2290 |
FIBXSQLVAR := Column[i]; |
| 2291 |
try |
| 2292 |
InternalSetAsString(AValue); |
| 2293 |
finally |
| 2294 |
FIBXSQLVAR := OldSQLVar; |
| 2295 |
end; |
| 2296 |
end; |
| 2297 |
end; |
| 2298 |
end; |
| 2299 |
|
| 2300 |
procedure TSQLParam.SetAsVariant(AValue: Variant); |
| 2301 |
var i: integer; |
| 2302 |
OldSQLVar: TSQLVarData; |
| 2303 |
begin |
| 2304 |
if FIBXSQLVAR.UniqueName then |
| 2305 |
inherited SetAsVariant(AValue) |
| 2306 |
else |
| 2307 |
with FIBXSQLVAR.Parent do |
| 2308 |
begin |
| 2309 |
for i := 0 to Count - 1 do |
| 2310 |
if Column[i].Name = Name then |
| 2311 |
begin |
| 2312 |
OldSQLVar := FIBXSQLVAR; |
| 2313 |
FIBXSQLVAR := Column[i]; |
| 2314 |
try |
| 2315 |
inherited SetAsVariant(AValue); |
| 2316 |
finally |
| 2317 |
FIBXSQLVAR := OldSQLVar; |
| 2318 |
end; |
| 2319 |
end; |
| 2320 |
end; |
| 2321 |
end; |
| 2322 |
|
| 2323 |
procedure TSQLParam.SetAsBlob(aValue: IBlob); |
| 2324 |
begin |
| 2325 |
with FIBXSQLVAR do |
| 2326 |
if not UniqueName then |
| 2327 |
IBError(ibxeDuplicateParamName,[Name]); |
| 2328 |
CheckActive; |
| 2329 |
Changing; |
| 2330 |
aValue.Close; |
| 2331 |
if aValue.GetSubType <> GetSubType then |
| 2332 |
IBError(ibxeIncompatibleBlob,[GetSubType,aValue.GetSubType]); |
| 2333 |
AsQuad := aValue.GetBlobID; |
| 2334 |
Changed; |
| 2335 |
end; |
| 2336 |
|
| 2337 |
procedure TSQLParam.SetAsQuad(AValue: TISC_QUAD); |
| 2338 |
var i: integer; |
| 2339 |
OldSQLVar: TSQLVarData; |
| 2340 |
begin |
| 2341 |
if FIBXSQLVAR.UniqueName then |
| 2342 |
inherited SetAsQuad(AValue) |
| 2343 |
else |
| 2344 |
with FIBXSQLVAR.Parent do |
| 2345 |
begin |
| 2346 |
for i := 0 to Count - 1 do |
| 2347 |
if Column[i].Name = Name then |
| 2348 |
begin |
| 2349 |
OldSQLVar := FIBXSQLVAR; |
| 2350 |
FIBXSQLVAR := Column[i]; |
| 2351 |
try |
| 2352 |
inherited SetAsQuad(AValue); |
| 2353 |
finally |
| 2354 |
FIBXSQLVAR := OldSQLVar; |
| 2355 |
end; |
| 2356 |
end; |
| 2357 |
end; |
| 2358 |
end; |
| 2359 |
|
| 2360 |
procedure TSQLParam.SetCharSetID(aValue: cardinal); |
| 2361 |
begin |
| 2362 |
FIBXSQLVAR.SetCharSetID(aValue); |
| 2363 |
end; |
| 2364 |
|
| 2365 |
{ TMetaData } |
| 2366 |
|
| 2367 |
procedure TMetaData.CheckActive; |
| 2368 |
begin |
| 2369 |
if FPrepareSeqNo < FMetaData.PrepareSeqNo then |
| 2370 |
IBError(ibxeInterfaceOutofDate,[nil]); |
| 2371 |
|
| 2372 |
if not FMetaData.CheckStatementStatus(ssPrepared) then |
| 2373 |
IBError(ibxeStatementNotPrepared, [nil]); |
| 2374 |
end; |
| 2375 |
|
| 2376 |
constructor TMetaData.Create(aMetaData: TSQLDataArea); |
| 2377 |
begin |
| 2378 |
inherited Create(aMetaData.Count); |
| 2379 |
FMetaData := aMetaData; |
| 2380 |
FStatement := aMetaData.Statement; |
| 2381 |
FPrepareSeqNo := aMetaData.PrepareSeqNo; |
| 2382 |
end; |
| 2383 |
|
| 2384 |
destructor TMetaData.Destroy; |
| 2385 |
begin |
| 2386 |
(FStatement as TInterfaceOwner).Remove(self); |
| 2387 |
inherited Destroy; |
| 2388 |
end; |
| 2389 |
|
| 2390 |
function TMetaData.GetUniqueRelationName: AnsiString; |
| 2391 |
begin |
| 2392 |
CheckActive; |
| 2393 |
Result := FMetaData.UniqueRelationName; |
| 2394 |
end; |
| 2395 |
|
| 2396 |
function TMetaData.getCount: integer; |
| 2397 |
begin |
| 2398 |
CheckActive; |
| 2399 |
Result := FMetaData.ColumnsInUseCount; |
| 2400 |
end; |
| 2401 |
|
| 2402 |
function TMetaData.getColumnMetaData(index: integer): IColumnMetaData; |
| 2403 |
begin |
| 2404 |
CheckActive; |
| 2405 |
if (index < 0) or (index >= getCount) then |
| 2406 |
IBError(ibxeInvalidColumnIndex,[nil]); |
| 2407 |
|
| 2408 |
if FMetaData.Count = 0 then |
| 2409 |
Result := nil |
| 2410 |
else |
| 2411 |
begin |
| 2412 |
if not HasInterface(index) then |
| 2413 |
AddInterface(index,TColumnMetaData.Create(self,FMetaData.Column[index])); |
| 2414 |
Result := TColumnMetaData(GetInterface(index)); |
| 2415 |
end; |
| 2416 |
end; |
| 2417 |
|
| 2418 |
function TMetaData.ByName(Idx: AnsiString): IColumnMetaData; |
| 2419 |
var aIBXSQLVAR: TSQLVarData; |
| 2420 |
begin |
| 2421 |
CheckActive; |
| 2422 |
aIBXSQLVAR := FMetaData.ColumnByName(Idx); |
| 2423 |
if aIBXSQLVAR = nil then |
| 2424 |
IBError(ibxeFieldNotFound,[Idx]); |
| 2425 |
Result := getColumnMetaData(aIBXSQLVAR.index); |
| 2426 |
end; |
| 2427 |
|
| 2428 |
{ TSQLParams } |
| 2429 |
|
| 2430 |
procedure TSQLParams.CheckActive; |
| 2431 |
begin |
| 2432 |
if not FSQLParams.StateChanged(FChangeSeqNo) then Exit; |
| 2433 |
|
| 2434 |
if FPrepareSeqNo < FSQLParams.PrepareSeqNo then |
| 2435 |
IBError(ibxeInterfaceOutofDate,[nil]); |
| 2436 |
|
| 2437 |
if not FSQLParams.CheckStatementStatus(ssPrepared) then |
| 2438 |
IBError(ibxeStatementNotPrepared, [nil]); |
| 2439 |
end; |
| 2440 |
|
| 2441 |
constructor TSQLParams.Create(aSQLParams: TSQLDataArea); |
| 2442 |
begin |
| 2443 |
inherited Create(aSQLParams.Count); |
| 2444 |
FSQLParams := aSQLParams; |
| 2445 |
FStatement := aSQLParams.Statement; |
| 2446 |
FPrepareSeqNo := aSQLParams.PrepareSeqNo; |
| 2447 |
FSQLParams.StateChanged(FChangeSeqNo); |
| 2448 |
end; |
| 2449 |
|
| 2450 |
destructor TSQLParams.Destroy; |
| 2451 |
begin |
| 2452 |
(FStatement as TInterfaceOwner).Remove(self); |
| 2453 |
inherited Destroy; |
| 2454 |
end; |
| 2455 |
|
| 2456 |
function TSQLParams.getCount: integer; |
| 2457 |
begin |
| 2458 |
CheckActive; |
| 2459 |
Result := FSQLParams.ColumnsInUseCount; |
| 2460 |
end; |
| 2461 |
|
| 2462 |
function TSQLParams.getSQLParam(index: integer): ISQLParam; |
| 2463 |
begin |
| 2464 |
CheckActive; |
| 2465 |
if (index < 0) or (index >= getCount) then |
| 2466 |
IBError(ibxeInvalidColumnIndex,[nil]); |
| 2467 |
|
| 2468 |
if getCount = 0 then |
| 2469 |
Result := nil |
| 2470 |
else |
| 2471 |
begin |
| 2472 |
if not HasInterface(index) then |
| 2473 |
AddInterface(index, TSQLParam.Create(self,FSQLParams.Column[index])); |
| 2474 |
Result := TSQLParam(GetInterface(index)); |
| 2475 |
end; |
| 2476 |
end; |
| 2477 |
|
| 2478 |
function TSQLParams.ByName(Idx: AnsiString): ISQLParam; |
| 2479 |
var aIBXSQLVAR: TSQLVarData; |
| 2480 |
begin |
| 2481 |
CheckActive; |
| 2482 |
aIBXSQLVAR := FSQLParams.ColumnByName(Idx); |
| 2483 |
if aIBXSQLVAR = nil then |
| 2484 |
IBError(ibxeFieldNotFound,[Idx]); |
| 2485 |
Result := getSQLParam(aIBXSQLVAR.index); |
| 2486 |
end; |
| 2487 |
|
| 2488 |
function TSQLParams.GetModified: Boolean; |
| 2489 |
var |
| 2490 |
i: Integer; |
| 2491 |
begin |
| 2492 |
CheckActive; |
| 2493 |
result := False; |
| 2494 |
with FSQLParams do |
| 2495 |
for i := 0 to Count - 1 do |
| 2496 |
if Column[i].Modified then |
| 2497 |
begin |
| 2498 |
result := True; |
| 2499 |
exit; |
| 2500 |
end; |
| 2501 |
end; |
| 2502 |
|
| 2503 |
{ TResults } |
| 2504 |
|
| 2505 |
procedure TResults.CheckActive; |
| 2506 |
begin |
| 2507 |
if not FResults.StateChanged(FChangeSeqNo) then Exit; |
| 2508 |
|
| 2509 |
if FPrepareSeqNo < FResults.PrepareSeqNo then |
| 2510 |
IBError(ibxeInterfaceOutofDate,[nil]); |
| 2511 |
|
| 2512 |
if not FResults.CheckStatementStatus(ssPrepared) then |
| 2513 |
IBError(ibxeStatementNotPrepared, [nil]); |
| 2514 |
|
| 2515 |
with GetTransaction as TFBTransaction do |
| 2516 |
if not InTransaction or (FResults.TransactionSeqNo <> FTransactionSeqNo) then |
| 2517 |
IBError(ibxeInterfaceOutofDate,[nil]); |
| 2518 |
end; |
| 2519 |
|
| 2520 |
function TResults.GetISQLData(aIBXSQLVAR: TSQLVarData): ISQLData; |
| 2521 |
begin |
| 2522 |
if (aIBXSQLVAR.Index < 0) or (aIBXSQLVAR.Index >= getCount) then |
| 2523 |
IBError(ibxeInvalidColumnIndex,[nil]); |
| 2524 |
|
| 2525 |
if not HasInterface(aIBXSQLVAR.Index) then |
| 2526 |
AddInterface(aIBXSQLVAR.Index, TIBSQLData.Create(self,aIBXSQLVAR)); |
| 2527 |
Result := TIBSQLData(GetInterface(aIBXSQLVAR.Index)); |
| 2528 |
end; |
| 2529 |
|
| 2530 |
constructor TResults.Create(aResults: TSQLDataArea); |
| 2531 |
begin |
| 2532 |
inherited Create(aResults.Count); |
| 2533 |
FResults := aResults; |
| 2534 |
FStatement := aResults.Statement; |
| 2535 |
FPrepareSeqNo := aResults.PrepareSeqNo; |
| 2536 |
FTransactionSeqNo := aResults.TransactionSeqNo; |
| 2537 |
FResults.StateChanged(FChangeSeqNo); |
| 2538 |
end; |
| 2539 |
|
| 2540 |
function TResults.getCount: integer; |
| 2541 |
begin |
| 2542 |
CheckActive; |
| 2543 |
Result := FResults.Count; |
| 2544 |
end; |
| 2545 |
|
| 2546 |
function TResults.ByName(Idx: AnsiString): ISQLData; |
| 2547 |
var col: TSQLVarData; |
| 2548 |
begin |
| 2549 |
Result := nil; |
| 2550 |
CheckActive; |
| 2551 |
if FResults.CheckStatementStatus(ssBOF) then |
| 2552 |
IBError(ibxeBOF,[nil]); |
| 2553 |
if FResults.CheckStatementStatus(ssEOF) then |
| 2554 |
IBError(ibxeEOF,[nil]); |
| 2555 |
|
| 2556 |
if FResults.Count > 0 then |
| 2557 |
begin |
| 2558 |
col := FResults.ColumnByName(Idx); |
| 2559 |
if col <> nil then |
| 2560 |
Result := GetISQLData(col); |
| 2561 |
end; |
| 2562 |
end; |
| 2563 |
|
| 2564 |
function TResults.getSQLData(index: integer): ISQLData; |
| 2565 |
begin |
| 2566 |
CheckActive; |
| 2567 |
if FResults.CheckStatementStatus(ssBOF) then |
| 2568 |
IBError(ibxeBOF,[nil]); |
| 2569 |
if FResults.CheckStatementStatus(ssEOF) then |
| 2570 |
IBError(ibxeEOF,[nil]); |
| 2571 |
if (index < 0) or (index >= FResults.Count) then |
| 2572 |
IBError(ibxeInvalidColumnIndex,[nil]); |
| 2573 |
|
| 2574 |
Result := GetISQLData(FResults.Column[index]); |
| 2575 |
end; |
| 2576 |
|
| 2577 |
procedure TResults.GetData(index: integer; var IsNull: boolean; var len: short; |
| 2578 |
var data: PByte); |
| 2579 |
begin |
| 2580 |
CheckActive; |
| 2581 |
FResults.GetData(index,IsNull, len,data); |
| 2582 |
end; |
| 2583 |
|
| 2584 |
function TResults.GetTransaction: ITransaction; |
| 2585 |
begin |
| 2586 |
Result := FStatement.GetTransaction; |
| 2587 |
end; |
| 2588 |
|
| 2589 |
procedure TResults.SetRetainInterfaces(aValue: boolean); |
| 2590 |
begin |
| 2591 |
RetainInterfaces := aValue; |
| 2592 |
end; |
| 2593 |
|
| 2594 |
end. |
| 2595 |
|
