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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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|
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interface |
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|
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uses |
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Classes, SysUtils, IBExternals, IBHeader, IB, FBActivityMonitor, FBClientAPI; |
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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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FFirebirdClientAPI: TFBClientAPI; |
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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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function GetTimestampFormatStr: AnsiString; |
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function GetDateFormatStr(IncludeTime: boolean): AnsiString; |
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function GetTimeFormatStr: AnsiString; |
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procedure SetAsInteger(AValue: Integer); |
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protected |
100 |
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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constructor Create(api: TFBClientAPI); |
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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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function GetDateTimeStrLength(DateTimeFormat: TIBDateTimeFormats): integer; |
140 |
procedure SetAsBoolean(AValue: boolean); virtual; |
141 |
procedure SetAsCurrency(Value: Currency); virtual; |
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procedure SetAsInt64(Value: Int64); virtual; |
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procedure SetAsDate(Value: TDateTime); virtual; |
144 |
procedure SetAsLong(Value: Long); virtual; |
145 |
procedure SetAsTime(Value: TDateTime); virtual; |
146 |
procedure SetAsDateTime(Value: TDateTime); |
147 |
procedure SetAsDouble(Value: Double); virtual; |
148 |
procedure SetAsFloat(Value: Float); virtual; |
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procedure SetAsPointer(Value: Pointer); |
150 |
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); |
155 |
procedure SetIsNull(Value: Boolean); virtual; |
156 |
procedure SetIsNullable(Value: Boolean); virtual; |
157 |
procedure SetName(aValue: AnsiString); virtual; |
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property AsDate: TDateTime read GetAsDateTime write SetAsDate; |
159 |
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; |
179 |
|
180 |
TSQLVarData = class; |
181 |
|
182 |
TStatementStatus = (ssPrepared, ssExecuteResults, ssCursorOpen, ssBOF, ssEOF); |
183 |
|
184 |
{ TSQLDataArea } |
185 |
|
186 |
TSQLDataArea = class |
187 |
private |
188 |
FCaseSensitiveParams: boolean; |
189 |
function GetColumn(index: integer): TSQLVarData; |
190 |
function GetCount: integer; |
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protected |
192 |
FUniqueRelationName: AnsiString; |
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FColumnList: array of TSQLVarData; |
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function GetStatement: IStatement; virtual; abstract; |
195 |
function GetPrepareSeqNo: integer; virtual; abstract; |
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function GetTransactionSeqNo: integer; virtual; abstract; |
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procedure SetCount(aValue: integer); virtual; abstract; |
198 |
procedure SetUniqueRelationName; |
199 |
public |
200 |
procedure Initialize; virtual; |
201 |
function IsInputDataArea: boolean; virtual; abstract; {Input to Database} |
202 |
procedure PreprocessSQL(sSQL: AnsiString; GenerateParamNames: boolean; |
203 |
var sProcessedSQL: AnsiString); |
204 |
function ColumnsInUseCount: integer; virtual; |
205 |
function ColumnByName(Idx: AnsiString): TSQLVarData; |
206 |
function CheckStatementStatus(Request: TStatementStatus): boolean; virtual; abstract; |
207 |
procedure GetData(index: integer; var IsNull: boolean; var len: short; |
208 |
var data: PByte); virtual; |
209 |
procedure RowChange; |
210 |
function StateChanged(var ChangeSeqNo: integer): boolean; virtual; abstract; |
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property CaseSensitiveParams: boolean read FCaseSensitiveParams |
212 |
write FCaseSensitiveParams; {Only used when IsInputDataArea true} |
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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; |
219 |
end; |
220 |
|
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{ TSQLVarData } |
222 |
|
223 |
TSQLVarData = class |
224 |
private |
225 |
FParent: TSQLDataArea; |
226 |
FName: AnsiString; |
227 |
FIndex: integer; |
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FModified: boolean; |
229 |
FUniqueName: boolean; |
230 |
FVarString: RawByteString; |
231 |
function GetStatement: IStatement; |
232 |
procedure SetName(AValue: AnsiString); |
233 |
protected |
234 |
function GetSQLType: cardinal; virtual; abstract; |
235 |
function GetSubtype: integer; virtual; abstract; |
236 |
function GetAliasName: AnsiString; virtual; abstract; |
237 |
function GetFieldName: AnsiString; virtual; abstract; |
238 |
function GetOwnerName: AnsiString; virtual; abstract; |
239 |
function GetRelationName: AnsiString; virtual; abstract; |
240 |
function GetScale: integer; virtual; abstract; |
241 |
function GetCharSetID: cardinal; virtual; abstract; |
242 |
function GetCodePage: TSystemCodePage; virtual; abstract; |
243 |
function GetIsNull: Boolean; virtual; abstract; |
244 |
function GetIsNullable: boolean; virtual; abstract; |
245 |
function GetSQLData: PByte; virtual; abstract; |
246 |
function GetDataLength: cardinal; virtual; abstract; |
247 |
procedure SetIsNull(Value: Boolean); virtual; abstract; |
248 |
procedure SetIsNullable(Value: Boolean); virtual; abstract; |
249 |
procedure SetSQLData(AValue: PByte; len: cardinal); virtual; abstract; |
250 |
procedure SetScale(aValue: integer); virtual; abstract; |
251 |
procedure SetDataLength(len: cardinal); virtual; abstract; |
252 |
procedure SetSQLType(aValue: cardinal); virtual; abstract; |
253 |
procedure SetCharSetID(aValue: cardinal); virtual; abstract; |
254 |
public |
255 |
constructor Create(aParent: TSQLDataArea; aIndex: integer); |
256 |
procedure SetString(aValue: AnsiString); |
257 |
procedure Changed; virtual; |
258 |
procedure RowChange; virtual; |
259 |
function GetAsArray(Array_ID: TISC_QUAD): IArray; virtual; abstract; |
260 |
function GetAsBlob(Blob_ID: TISC_QUAD; BPB: IBPB): IBlob; virtual; abstract; |
261 |
function CreateBlob: IBlob; virtual; abstract; |
262 |
function GetArrayMetaData: IArrayMetaData; virtual; abstract; |
263 |
function GetBlobMetaData: IBlobMetaData; virtual; abstract; |
264 |
procedure Initialize; virtual; |
265 |
|
266 |
public |
267 |
property AliasName: AnsiString read GetAliasName; |
268 |
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; |
278 |
property DataLength: cardinal read GetDataLength write SetDataLength; |
279 |
property IsNull: Boolean read GetIsNull write SetIsNull; |
280 |
property IsNullable: Boolean read GetIsNullable write SetIsNullable; |
281 |
property Scale: integer read GetScale write SetScale; |
282 |
public |
283 |
property Modified: Boolean read FModified; |
284 |
property Statement: IStatement read GetStatement; |
285 |
property UniqueName: boolean read FUniqueName write FUniqueName; |
286 |
end; |
287 |
|
288 |
{ TColumnMetaData } |
289 |
|
290 |
TColumnMetaData = class(TSQLDataItem,IColumnMetaData) |
291 |
private |
292 |
FIBXSQLVAR: TSQLVarData; |
293 |
FOwner: IUnknown; {Keep reference to ensure Metadata/statement not discarded} |
294 |
FPrepareSeqNo: integer; |
295 |
FStatement: IStatement; |
296 |
FChangeSeqNo: integer; |
297 |
protected |
298 |
procedure CheckActive; override; |
299 |
function SQLData: PByte; override; |
300 |
function GetDataLength: cardinal; override; |
301 |
function GetCodePage: TSystemCodePage; override; |
302 |
|
303 |
public |
304 |
constructor Create(aOwner: IUnknown; aIBXSQLVAR: TSQLVarData); |
305 |
destructor Destroy; override; |
306 |
function GetSQLDialect: integer; override; |
307 |
property Statement: IStatement read FStatement; |
308 |
|
309 |
public |
310 |
{IColumnMetaData} |
311 |
function GetIndex: integer; |
312 |
function GetSQLType: cardinal; override; |
313 |
function getSubtype: integer; |
314 |
function getRelationName: AnsiString; |
315 |
function getOwnerName: AnsiString; |
316 |
function getSQLName: AnsiString; {Name of the column} |
317 |
function getAliasName: AnsiString; {Alias Name of column or Column Name if not alias} |
318 |
function GetName: AnsiString; override; {Disambiguated uppercase Field Name} |
319 |
function GetScale: integer; override; |
320 |
function getCharSetID: cardinal; override; |
321 |
function GetIsNullable: boolean; override; |
322 |
function GetSize: cardinal; |
323 |
function GetArrayMetaData: IArrayMetaData; |
324 |
function GetBlobMetaData: IBlobMetaData; |
325 |
property Name: AnsiString read GetName; |
326 |
property Size: cardinal read GetSize; |
327 |
property CharSetID: cardinal read getCharSetID; |
328 |
property SQLSubtype: integer read getSubtype; |
329 |
property IsNullable: Boolean read GetIsNullable; |
330 |
end; |
331 |
|
332 |
{ TIBSQLData } |
333 |
|
334 |
TIBSQLData = class(TColumnMetaData,ISQLData) |
335 |
protected |
336 |
procedure CheckActive; override; |
337 |
public |
338 |
function GetIsNull: Boolean; override; |
339 |
function GetAsArray: IArray; |
340 |
function GetAsBlob: IBlob; overload; |
341 |
function GetAsBlob(BPB: IBPB): IBlob; overload; |
342 |
function GetAsString: AnsiString; override; |
343 |
property AsBlob: IBlob read GetAsBlob; |
344 |
end; |
345 |
|
346 |
{ TSQLParam } |
347 |
|
348 |
TSQLParam = class(TIBSQLData,ISQLParam) |
349 |
protected |
350 |
procedure CheckActive; override; |
351 |
procedure Changed; override; |
352 |
procedure InternalSetAsString(Value: AnsiString); override; |
353 |
procedure SetScale(aValue: integer); override; |
354 |
procedure SetDataLength(len: cardinal); override; |
355 |
procedure SetSQLType(aValue: cardinal); override; |
356 |
public |
357 |
procedure Clear; |
358 |
function GetModified: boolean; override; |
359 |
function GetAsPointer: Pointer; |
360 |
procedure SetName(Value: AnsiString); override; |
361 |
procedure SetIsNull(Value: Boolean); override; |
362 |
procedure SetIsNullable(Value: Boolean); override; |
363 |
procedure SetAsArray(anArray: IArray); |
364 |
|
365 |
{overrides} |
366 |
procedure SetAsBoolean(AValue: boolean); |
367 |
procedure SetAsCurrency(AValue: Currency); |
368 |
procedure SetAsInt64(AValue: Int64); |
369 |
procedure SetAsDate(AValue: TDateTime); |
370 |
procedure SetAsLong(AValue: Long); |
371 |
procedure SetAsTime(AValue: TDateTime); |
372 |
procedure SetAsDateTime(AValue: TDateTime); |
373 |
procedure SetAsDouble(AValue: Double); |
374 |
procedure SetAsFloat(AValue: Float); |
375 |
procedure SetAsPointer(AValue: Pointer); |
376 |
procedure SetAsShort(AValue: Short); |
377 |
procedure SetAsString(AValue: AnsiString); override; |
378 |
procedure SetAsVariant(AValue: Variant); |
379 |
procedure SetAsBlob(aValue: IBlob); |
380 |
procedure SetAsQuad(AValue: TISC_QUAD); |
381 |
procedure SetCharSetID(aValue: cardinal); |
382 |
|
383 |
property AsBlob: IBlob read GetAsBlob write SetAsBlob; |
384 |
property IsNullable: Boolean read GetIsNullable write SetIsNullable; |
385 |
end; |
386 |
|
387 |
{ TMetaData } |
388 |
|
389 |
TMetaData = class(TInterfaceOwner,IMetaData) |
390 |
private |
391 |
FPrepareSeqNo: integer; |
392 |
FMetaData: TSQLDataArea; |
393 |
FStatement: IStatement; {ensure FStatement not destroyed until no longer needed} |
394 |
procedure CheckActive; |
395 |
public |
396 |
constructor Create(aMetaData: TSQLDataArea); |
397 |
destructor Destroy; override; |
398 |
public |
399 |
{IMetaData} |
400 |
function GetUniqueRelationName: AnsiString; |
401 |
function getCount: integer; |
402 |
function getColumnMetaData(index: integer): IColumnMetaData; |
403 |
function ByName(Idx: AnsiString): IColumnMetaData; |
404 |
end; |
405 |
|
406 |
{ TSQLParams } |
407 |
|
408 |
TSQLParams = class(TInterfaceOwner,ISQLParams) |
409 |
private |
410 |
FPrepareSeqNo: integer; |
411 |
FChangeSeqNo: integer; |
412 |
FSQLParams: TSQLDataArea; |
413 |
FStatement: IStatement; {ensure FStatement not destroyed until no longer needed} |
414 |
procedure CheckActive; |
415 |
public |
416 |
constructor Create(aSQLParams: TSQLDataArea); |
417 |
destructor Destroy; override; |
418 |
public |
419 |
{ISQLParams} |
420 |
function getCount: integer; |
421 |
function getSQLParam(index: integer): ISQLParam; |
422 |
function ByName(Idx: AnsiString): ISQLParam ; |
423 |
function GetModified: Boolean; |
424 |
function GetHasCaseSensitiveParams: Boolean; |
425 |
end; |
426 |
|
427 |
{ TResults } |
428 |
|
429 |
TResults = class(TInterfaceOwner,IResults) |
430 |
private |
431 |
FPrepareSeqNo: integer; |
432 |
FTransactionSeqNo: integer; |
433 |
FChangeSeqNo: integer; |
434 |
FResults: TSQLDataArea; |
435 |
FStatement: IStatement; {ensure FStatement not destroyed until no longer needed} |
436 |
function GetISQLData(aIBXSQLVAR: TSQLVarData): ISQLData; |
437 |
protected |
438 |
procedure CheckActive; |
439 |
public |
440 |
constructor Create(aResults: TSQLDataArea); |
441 |
{IResults} |
442 |
function getCount: integer; |
443 |
function ByName(Idx: AnsiString): ISQLData; |
444 |
function getSQLData(index: integer): ISQLData; |
445 |
procedure GetData(index: integer; var IsNull:boolean; var len: short; var data: PByte); |
446 |
function GetTransaction: ITransaction; virtual; |
447 |
procedure SetRetainInterfaces(aValue: boolean); |
448 |
end; |
449 |
|
450 |
implementation |
451 |
|
452 |
uses FBMessages, variants, IBUtils, FBTransaction, DateUtils; |
453 |
|
454 |
{ TSQLDataArea } |
455 |
|
456 |
function TSQLDataArea.GetColumn(index: integer): TSQLVarData; |
457 |
begin |
458 |
if (index < 0) or (index >= Count) then |
459 |
IBError(ibxeInvalidColumnIndex,[nil]); |
460 |
Result := FColumnList[index]; |
461 |
end; |
462 |
|
463 |
function TSQLDataArea.GetCount: integer; |
464 |
begin |
465 |
Result := Length(FColumnList); |
466 |
end; |
467 |
|
468 |
procedure TSQLDataArea.SetUniqueRelationName; |
469 |
var |
470 |
i: Integer; |
471 |
bUnique: Boolean; |
472 |
RelationName: AnsiString; |
473 |
begin |
474 |
bUnique := True; |
475 |
for i := 0 to ColumnsInUseCount - 1 do |
476 |
begin |
477 |
RelationName := Column[i].RelationName; |
478 |
|
479 |
{First get the unique relation name, if any} |
480 |
|
481 |
if bUnique and (RelationName <> '') then |
482 |
begin |
483 |
if FUniqueRelationName = '' then |
484 |
FUniqueRelationName := RelationName |
485 |
else |
486 |
if RelationName <> FUniqueRelationName then |
487 |
begin |
488 |
FUniqueRelationName := ''; |
489 |
bUnique := False; |
490 |
end; |
491 |
end; |
492 |
end; |
493 |
end; |
494 |
|
495 |
procedure TSQLDataArea.Initialize; |
496 |
var |
497 |
i: Integer; |
498 |
begin |
499 |
for i := 0 to ColumnsInUseCount - 1 do |
500 |
Column[i].Initialize; |
501 |
end; |
502 |
|
503 |
procedure TSQLDataArea.PreprocessSQL(sSQL: AnsiString; GenerateParamNames: boolean; |
504 |
var sProcessedSQL: AnsiString); |
505 |
|
506 |
var slNames: TStrings; |
507 |
|
508 |
procedure SetColumnNames(slNames: TStrings); |
509 |
var i, j: integer; |
510 |
found: boolean; |
511 |
begin |
512 |
found := false; |
513 |
SetCount(slNames.Count); |
514 |
for i := 0 to slNames.Count - 1 do |
515 |
begin |
516 |
Column[i].Name := slNames[i]; |
517 |
Column[i].UniqueName := (slNames.Objects[i] <> nil); |
518 |
end; |
519 |
for i := 0 to Count - 1 do |
520 |
begin |
521 |
if not Column[i].UniqueName then |
522 |
begin |
523 |
found := false; |
524 |
for j := i + 1 to Count - 1 do |
525 |
if Column[i].Name = Column[j].Name then |
526 |
begin |
527 |
found := true; |
528 |
break; |
529 |
end; |
530 |
Column[i].UniqueName := not found; |
531 |
end; |
532 |
end; |
533 |
end; |
534 |
|
535 |
begin |
536 |
if not IsInputDataArea then |
537 |
IBError(ibxeNotPermitted,[nil]); |
538 |
|
539 |
slNames := TStringList.Create; |
540 |
try |
541 |
sProcessedSQL := TSQLParamProcessor.Execute(sSQL,GenerateParamNames,slNames); |
542 |
SetColumnNames(slNames); |
543 |
finally |
544 |
slNames.Free; |
545 |
end; |
546 |
end; |
547 |
|
548 |
function TSQLDataArea.ColumnsInUseCount: integer; |
549 |
begin |
550 |
Result := Count; |
551 |
end; |
552 |
|
553 |
function TSQLDataArea.ColumnByName(Idx: AnsiString): TSQLVarData; |
554 |
var |
555 |
s: AnsiString; |
556 |
i: Integer; |
557 |
begin |
558 |
if not IsInputDataArea or not CaseSensitiveParams then |
559 |
s := AnsiUpperCase(Idx) |
560 |
else |
561 |
s := Idx; |
562 |
|
563 |
for i := 0 to Count - 1 do |
564 |
if Column[i].Name = s then |
565 |
begin |
566 |
Result := Column[i]; |
567 |
Exit; |
568 |
end; |
569 |
Result := nil; |
570 |
end; |
571 |
|
572 |
procedure TSQLDataArea.GetData(index: integer; var IsNull: boolean; |
573 |
var len: short; var data: PByte); |
574 |
begin |
575 |
//Do Nothing |
576 |
end; |
577 |
|
578 |
procedure TSQLDataArea.RowChange; |
579 |
var i: integer; |
580 |
begin |
581 |
for i := 0 to Count - 1 do |
582 |
Column[i].RowChange; |
583 |
end; |
584 |
|
585 |
{TSQLVarData} |
586 |
|
587 |
function TSQLVarData.GetStatement: IStatement; |
588 |
begin |
589 |
Result := FParent.Statement; |
590 |
end; |
591 |
|
592 |
procedure TSQLVarData.SetName(AValue: AnsiString); |
593 |
begin |
594 |
if not Parent.IsInputDataArea or not Parent.CaseSensitiveParams then |
595 |
FName := AnsiUpperCase(AValue) |
596 |
else |
597 |
FName := AValue; |
598 |
end; |
599 |
|
600 |
constructor TSQLVarData.Create(aParent: TSQLDataArea; aIndex: integer); |
601 |
begin |
602 |
inherited Create; |
603 |
FParent := aParent; |
604 |
FIndex := aIndex; |
605 |
FUniqueName := true; |
606 |
end; |
607 |
|
608 |
procedure TSQLVarData.SetString(aValue: AnsiString); |
609 |
begin |
610 |
{we take full advantage here of reference counted strings. When setting a string |
611 |
value, a reference is kept in FVarString and a pointer to it placed in the |
612 |
SQLVar. This avoids string copies. Note that PAnsiChar is guaranteed to point to |
613 |
a zero byte when the string is empty, neatly avoiding a nil pointer error.} |
614 |
|
615 |
FVarString := aValue; |
616 |
SQLType := SQL_TEXT; |
617 |
Scale := 0; |
618 |
SetSQLData(PByte(PAnsiChar(FVarString)),Length(aValue)); |
619 |
end; |
620 |
|
621 |
procedure TSQLVarData.Changed; |
622 |
begin |
623 |
FModified := true; |
624 |
end; |
625 |
|
626 |
procedure TSQLVarData.RowChange; |
627 |
begin |
628 |
FModified := false; |
629 |
FVarString := ''; |
630 |
end; |
631 |
|
632 |
procedure TSQLVarData.Initialize; |
633 |
|
634 |
function FindVarByName(idx: AnsiString; limit: integer): TSQLVarData; |
635 |
var |
636 |
k: integer; |
637 |
begin |
638 |
for k := 0 to limit do |
639 |
if Parent.Column[k].Name = idx then |
640 |
begin |
641 |
Result := Parent.Column[k]; |
642 |
Exit; |
643 |
end; |
644 |
Result := nil; |
645 |
end; |
646 |
|
647 |
var |
648 |
j, j_len: Integer; |
649 |
st: AnsiString; |
650 |
sBaseName: AnsiString; |
651 |
begin |
652 |
RowChange; |
653 |
|
654 |
{If an output SQLDA then copy the aliasname to the FName. Ensure |
655 |
that they are all upper case only and disambiguated. |
656 |
} |
657 |
|
658 |
if not Parent.IsInputDataArea then |
659 |
begin |
660 |
st := Space2Underscore(AnsiUppercase(AliasName)); |
661 |
if st = '' then |
662 |
begin |
663 |
sBaseName := 'F_'; {do not localize} |
664 |
j := 1; j_len := 1; |
665 |
st := sBaseName + IntToStr(j); |
666 |
end |
667 |
else |
668 |
begin |
669 |
j := 0; j_len := 0; |
670 |
sBaseName := st; |
671 |
end; |
672 |
|
673 |
{Look for other columns with the same name and make unique} |
674 |
|
675 |
while FindVarByName(st,Index-1) <> nil do |
676 |
begin |
677 |
Inc(j); |
678 |
j_len := Length(IntToStr(j)); |
679 |
if j_len + Length(sBaseName) > 31 then |
680 |
st := system.Copy(sBaseName, 1, 31 - j_len) + IntToStr(j) |
681 |
else |
682 |
st := sBaseName + IntToStr(j); |
683 |
end; |
684 |
|
685 |
Name := st; |
686 |
end; |
687 |
end; |
688 |
|
689 |
{TSQLDataItem} |
690 |
|
691 |
function TSQLDataItem.AdjustScale(Value: Int64; aScale: Integer): Double; |
692 |
var |
693 |
Scaling : Int64; |
694 |
i: Integer; |
695 |
Val: Double; |
696 |
begin |
697 |
Scaling := 1; Val := Value; |
698 |
if aScale > 0 then |
699 |
begin |
700 |
for i := 1 to aScale do |
701 |
Scaling := Scaling * 10; |
702 |
result := Val * Scaling; |
703 |
end |
704 |
else |
705 |
if aScale < 0 then |
706 |
begin |
707 |
for i := -1 downto aScale do |
708 |
Scaling := Scaling * 10; |
709 |
result := Val / Scaling; |
710 |
end |
711 |
else |
712 |
result := Val; |
713 |
end; |
714 |
|
715 |
function TSQLDataItem.AdjustScaleToInt64(Value: Int64; aScale: Integer): Int64; |
716 |
var |
717 |
Scaling : Int64; |
718 |
i: Integer; |
719 |
Val: Int64; |
720 |
begin |
721 |
Scaling := 1; Val := Value; |
722 |
if aScale > 0 then begin |
723 |
for i := 1 to aScale do Scaling := Scaling * 10; |
724 |
result := Val * Scaling; |
725 |
end else if aScale < 0 then begin |
726 |
for i := -1 downto aScale do Scaling := Scaling * 10; |
727 |
result := Val div Scaling; |
728 |
end else |
729 |
result := Val; |
730 |
end; |
731 |
|
732 |
function TSQLDataItem.AdjustScaleToCurrency(Value: Int64; aScale: Integer |
733 |
): Currency; |
734 |
var |
735 |
Scaling : Int64; |
736 |
i : Integer; |
737 |
FractionText, PadText, CurrText: AnsiString; |
738 |
begin |
739 |
Result := 0; |
740 |
Scaling := 1; |
741 |
PadText := ''; |
742 |
if aScale > 0 then |
743 |
begin |
744 |
for i := 1 to aScale do |
745 |
Scaling := Scaling * 10; |
746 |
result := Value * Scaling; |
747 |
end |
748 |
else |
749 |
if aScale < 0 then |
750 |
begin |
751 |
for i := -1 downto aScale do |
752 |
Scaling := Scaling * 10; |
753 |
FractionText := IntToStr(abs(Value mod Scaling)); |
754 |
for i := Length(FractionText) to -aScale -1 do |
755 |
PadText := '0' + PadText; |
756 |
{$IF declared(DefaultFormatSettings)} |
757 |
with DefaultFormatSettings do |
758 |
{$ELSE} |
759 |
{$IF declared(FormatSettings)} |
760 |
with FormatSettings do |
761 |
{$IFEND} |
762 |
{$IFEND} |
763 |
if Value < 0 then |
764 |
CurrText := '-' + IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText |
765 |
else |
766 |
CurrText := IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText; |
767 |
try |
768 |
result := StrToCurr(CurrText); |
769 |
except |
770 |
on E: Exception do |
771 |
IBError(ibxeInvalidDataConversion, [nil]); |
772 |
end; |
773 |
end |
774 |
else |
775 |
result := Value; |
776 |
end; |
777 |
|
778 |
function TSQLDataItem.GetDateFormatStr(IncludeTime: boolean): AnsiString; |
779 |
begin |
780 |
{$IF declared(DefaultFormatSettings)} |
781 |
with DefaultFormatSettings do |
782 |
{$ELSE} |
783 |
{$IF declared(FormatSettings)} |
784 |
with FormatSettings do |
785 |
{$IFEND} |
786 |
{$IFEND} |
787 |
case GetSQLDialect of |
788 |
1: |
789 |
if IncludeTime then |
790 |
result := ShortDateFormat + ' ' + LongTimeFormat |
791 |
else |
792 |
result := ShortDateFormat; |
793 |
3: |
794 |
result := ShortDateFormat; |
795 |
end; |
796 |
end; |
797 |
|
798 |
function TSQLDataItem.GetTimeFormatStr: AnsiString; |
799 |
begin |
800 |
{$IF declared(DefaultFormatSettings)} |
801 |
with DefaultFormatSettings do |
802 |
{$ELSE} |
803 |
{$IF declared(FormatSettings)} |
804 |
with FormatSettings do |
805 |
{$IFEND} |
806 |
{$IFEND} |
807 |
Result := LongTimeFormat; |
808 |
end; |
809 |
|
810 |
function TSQLDataItem.GetTimestampFormatStr: AnsiString; |
811 |
begin |
812 |
{$IF declared(DefaultFormatSettings)} |
813 |
with DefaultFormatSettings do |
814 |
{$ELSE} |
815 |
{$IF declared(FormatSettings)} |
816 |
with FormatSettings do |
817 |
{$IFEND} |
818 |
{$IFEND} |
819 |
Result := ShortDateFormat + ' ' + LongTimeFormat + '.zzz'; |
820 |
end; |
821 |
|
822 |
procedure TSQLDataItem.SetAsInteger(AValue: Integer); |
823 |
begin |
824 |
SetAsLong(aValue); |
825 |
end; |
826 |
|
827 |
function TSQLDataItem.AdjustScaleFromCurrency(Value: Currency; aScale: Integer |
828 |
): Int64; |
829 |
var |
830 |
Scaling : Int64; |
831 |
i : Integer; |
832 |
begin |
833 |
Result := 0; |
834 |
Scaling := 1; |
835 |
if aScale < 0 then |
836 |
begin |
837 |
for i := -1 downto aScale do |
838 |
Scaling := Scaling * 10; |
839 |
result := trunc(Value * Scaling); |
840 |
end |
841 |
else |
842 |
if aScale > 0 then |
843 |
begin |
844 |
for i := 1 to aScale do |
845 |
Scaling := Scaling * 10; |
846 |
result := trunc(Value / Scaling); |
847 |
end |
848 |
else |
849 |
result := trunc(Value); |
850 |
end; |
851 |
|
852 |
function TSQLDataItem.AdjustScaleFromDouble(Value: Double; aScale: Integer |
853 |
): Int64; |
854 |
var |
855 |
Scaling : Int64; |
856 |
i : Integer; |
857 |
begin |
858 |
Result := 0; |
859 |
Scaling := 1; |
860 |
if aScale < 0 then |
861 |
begin |
862 |
for i := -1 downto aScale do |
863 |
Scaling := Scaling * 10; |
864 |
result := trunc(Value * Scaling); |
865 |
end |
866 |
else |
867 |
if aScale > 0 then |
868 |
begin |
869 |
for i := 1 to aScale do |
870 |
Scaling := Scaling * 10; |
871 |
result := trunc(Value / Scaling); |
872 |
end |
873 |
else |
874 |
result := trunc(Value); |
875 |
end; |
876 |
|
877 |
procedure TSQLDataItem.CheckActive; |
878 |
begin |
879 |
//Do nothing by default |
880 |
end; |
881 |
|
882 |
procedure TSQLDataItem.Changed; |
883 |
begin |
884 |
//Do nothing by default |
885 |
end; |
886 |
|
887 |
procedure TSQLDataItem.Changing; |
888 |
begin |
889 |
//Do nothing by default |
890 |
end; |
891 |
|
892 |
procedure TSQLDataItem.InternalSetAsString(Value: AnsiString); |
893 |
begin |
894 |
//Do nothing by default |
895 |
end; |
896 |
|
897 |
function TSQLDataItem.Transliterate(s: AnsiString; CodePage: TSystemCodePage |
898 |
): RawByteString; |
899 |
begin |
900 |
Result := s; |
901 |
if StringCodePage(Result) <> CodePage then |
902 |
SetCodePage(Result,CodePage,CodePage <> CP_NONE); |
903 |
end; |
904 |
|
905 |
procedure TSQLDataItem.SetScale(aValue: integer); |
906 |
begin |
907 |
//Do nothing by default |
908 |
end; |
909 |
|
910 |
procedure TSQLDataItem.SetDataLength(len: cardinal); |
911 |
begin |
912 |
//Do nothing by default |
913 |
end; |
914 |
|
915 |
procedure TSQLDataItem.SetSQLType(aValue: cardinal); |
916 |
begin |
917 |
//Do nothing by default |
918 |
end; |
919 |
|
920 |
constructor TSQLDataItem.Create(api: TFBClientAPI); |
921 |
begin |
922 |
inherited Create; |
923 |
FFirebirdClientAPI := api; |
924 |
end; |
925 |
|
926 |
function TSQLDataItem.GetSQLTypeName: AnsiString; |
927 |
begin |
928 |
Result := GetSQLTypeName(GetSQLType); |
929 |
end; |
930 |
|
931 |
class function TSQLDataItem.GetSQLTypeName(SQLType: short): AnsiString; |
932 |
begin |
933 |
Result := 'Unknown'; |
934 |
case SQLType of |
935 |
SQL_VARYING: Result := 'SQL_VARYING'; |
936 |
SQL_TEXT: Result := 'SQL_TEXT'; |
937 |
SQL_DOUBLE: Result := 'SQL_DOUBLE'; |
938 |
SQL_FLOAT: Result := 'SQL_FLOAT'; |
939 |
SQL_LONG: Result := 'SQL_LONG'; |
940 |
SQL_SHORT: Result := 'SQL_SHORT'; |
941 |
SQL_TIMESTAMP: Result := 'SQL_TIMESTAMP'; |
942 |
SQL_BLOB: Result := 'SQL_BLOB'; |
943 |
SQL_D_FLOAT: Result := 'SQL_D_FLOAT'; |
944 |
SQL_ARRAY: Result := 'SQL_ARRAY'; |
945 |
SQL_QUAD: Result := 'SQL_QUAD'; |
946 |
SQL_TYPE_TIME: Result := 'SQL_TYPE_TIME'; |
947 |
SQL_TYPE_DATE: Result := 'SQL_TYPE_DATE'; |
948 |
SQL_INT64: Result := 'SQL_INT64'; |
949 |
end; |
950 |
end; |
951 |
|
952 |
function TSQLDataItem.GetAsBoolean: boolean; |
953 |
begin |
954 |
CheckActive; |
955 |
result := false; |
956 |
if not IsNull then |
957 |
begin |
958 |
if SQLType = SQL_BOOLEAN then |
959 |
result := PByte(SQLData)^ = ISC_TRUE |
960 |
else |
961 |
IBError(ibxeInvalidDataConversion, [nil]); |
962 |
end |
963 |
end; |
964 |
|
965 |
function TSQLDataItem.GetAsCurrency: Currency; |
966 |
begin |
967 |
CheckActive; |
968 |
result := 0; |
969 |
if GetSQLDialect < 3 then |
970 |
result := GetAsDouble |
971 |
else begin |
972 |
if not IsNull then |
973 |
case SQLType of |
974 |
SQL_TEXT, SQL_VARYING: begin |
975 |
try |
976 |
result := StrtoCurr(AsString); |
977 |
except |
978 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]); |
979 |
end; |
980 |
end; |
981 |
SQL_SHORT: |
982 |
result := AdjustScaleToCurrency(Int64(PShort(SQLData)^), |
983 |
Scale); |
984 |
SQL_LONG: |
985 |
result := AdjustScaleToCurrency(Int64(PLong(SQLData)^), |
986 |
Scale); |
987 |
SQL_INT64: |
988 |
result := AdjustScaleToCurrency(PInt64(SQLData)^, |
989 |
Scale); |
990 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: |
991 |
result := Trunc(AsDouble); |
992 |
else |
993 |
IBError(ibxeInvalidDataConversion, [nil]); |
994 |
end; |
995 |
end; |
996 |
end; |
997 |
|
998 |
function TSQLDataItem.GetAsInt64: Int64; |
999 |
begin |
1000 |
CheckActive; |
1001 |
result := 0; |
1002 |
if not IsNull then |
1003 |
case SQLType of |
1004 |
SQL_TEXT, SQL_VARYING: begin |
1005 |
try |
1006 |
result := StrToInt64(AsString); |
1007 |
except |
1008 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]); |
1009 |
end; |
1010 |
end; |
1011 |
SQL_SHORT: |
1012 |
result := AdjustScaleToInt64(Int64(PShort(SQLData)^), |
1013 |
Scale); |
1014 |
SQL_LONG: |
1015 |
result := AdjustScaleToInt64(Int64(PLong(SQLData)^), |
1016 |
Scale); |
1017 |
SQL_INT64: |
1018 |
result := AdjustScaleToInt64(PInt64(SQLData)^, |
1019 |
Scale); |
1020 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: |
1021 |
result := Trunc(AsDouble); |
1022 |
else |
1023 |
IBError(ibxeInvalidDataConversion, [nil]); |
1024 |
end; |
1025 |
end; |
1026 |
|
1027 |
function TSQLDataItem.GetAsDateTime: TDateTime; |
1028 |
begin |
1029 |
CheckActive; |
1030 |
result := 0; |
1031 |
if not IsNull then |
1032 |
with FFirebirdClientAPI do |
1033 |
case SQLType of |
1034 |
SQL_TEXT, SQL_VARYING: begin |
1035 |
try |
1036 |
result := StrToDate(AsString); |
1037 |
except |
1038 |
on E: EConvertError do IBError(ibxeInvalidDataConversion, [nil]); |
1039 |
end; |
1040 |
end; |
1041 |
SQL_TYPE_DATE: |
1042 |
result := SQLDecodeDate(SQLData); |
1043 |
SQL_TYPE_TIME: |
1044 |
result := SQLDecodeTime(SQLData); |
1045 |
SQL_TIMESTAMP: |
1046 |
result := SQLDecodeDateTime(SQLData); |
1047 |
else |
1048 |
IBError(ibxeInvalidDataConversion, [nil]); |
1049 |
end; |
1050 |
end; |
1051 |
|
1052 |
function TSQLDataItem.GetAsDouble: Double; |
1053 |
begin |
1054 |
CheckActive; |
1055 |
result := 0; |
1056 |
if not IsNull then begin |
1057 |
case SQLType of |
1058 |
SQL_TEXT, SQL_VARYING: begin |
1059 |
try |
1060 |
result := StrToFloat(AsString); |
1061 |
except |
1062 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]); |
1063 |
end; |
1064 |
end; |
1065 |
SQL_SHORT: |
1066 |
result := AdjustScale(Int64(PShort(SQLData)^), |
1067 |
Scale); |
1068 |
SQL_LONG: |
1069 |
result := AdjustScale(Int64(PLong(SQLData)^), |
1070 |
Scale); |
1071 |
SQL_INT64: |
1072 |
result := AdjustScale(PInt64(SQLData)^, Scale); |
1073 |
SQL_FLOAT: |
1074 |
result := PFloat(SQLData)^; |
1075 |
SQL_DOUBLE, SQL_D_FLOAT: |
1076 |
result := PDouble(SQLData)^; |
1077 |
else |
1078 |
IBError(ibxeInvalidDataConversion, [nil]); |
1079 |
end; |
1080 |
if Scale <> 0 then |
1081 |
result := |
1082 |
StrToFloat(FloatToStrF(result, fffixed, 15, |
1083 |
Abs(Scale) )); |
1084 |
end; |
1085 |
end; |
1086 |
|
1087 |
function TSQLDataItem.GetAsFloat: Float; |
1088 |
begin |
1089 |
CheckActive; |
1090 |
result := 0; |
1091 |
try |
1092 |
result := AsDouble; |
1093 |
except |
1094 |
on E: EOverflow do |
1095 |
IBError(ibxeInvalidDataConversion, [nil]); |
1096 |
end; |
1097 |
end; |
1098 |
|
1099 |
function TSQLDataItem.GetAsLong: Long; |
1100 |
begin |
1101 |
CheckActive; |
1102 |
result := 0; |
1103 |
if not IsNull then |
1104 |
case SQLType of |
1105 |
SQL_TEXT, SQL_VARYING: begin |
1106 |
try |
1107 |
result := StrToInt(AsString); |
1108 |
except |
1109 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]); |
1110 |
end; |
1111 |
end; |
1112 |
SQL_SHORT: |
1113 |
result := Trunc(AdjustScale(Int64(PShort(SQLData)^), |
1114 |
Scale)); |
1115 |
SQL_LONG: |
1116 |
result := Trunc(AdjustScale(Int64(PLong(SQLData)^), |
1117 |
Scale)); |
1118 |
SQL_INT64: |
1119 |
result := Trunc(AdjustScale(PInt64(SQLData)^, Scale)); |
1120 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: |
1121 |
result := Trunc(AsDouble); |
1122 |
else |
1123 |
IBError(ibxeInvalidDataConversion, [nil]); |
1124 |
end; |
1125 |
end; |
1126 |
|
1127 |
function TSQLDataItem.GetAsPointer: Pointer; |
1128 |
begin |
1129 |
CheckActive; |
1130 |
if not IsNull then |
1131 |
result := SQLData |
1132 |
else |
1133 |
result := nil; |
1134 |
end; |
1135 |
|
1136 |
function TSQLDataItem.GetAsQuad: TISC_QUAD; |
1137 |
begin |
1138 |
CheckActive; |
1139 |
result.gds_quad_high := 0; |
1140 |
result.gds_quad_low := 0; |
1141 |
if not IsNull then |
1142 |
case SQLType of |
1143 |
SQL_BLOB, SQL_ARRAY, SQL_QUAD: |
1144 |
result := PISC_QUAD(SQLData)^; |
1145 |
else |
1146 |
IBError(ibxeInvalidDataConversion, [nil]); |
1147 |
end; |
1148 |
end; |
1149 |
|
1150 |
function TSQLDataItem.GetAsShort: short; |
1151 |
begin |
1152 |
CheckActive; |
1153 |
result := 0; |
1154 |
try |
1155 |
result := AsLong; |
1156 |
except |
1157 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]); |
1158 |
end; |
1159 |
end; |
1160 |
|
1161 |
|
1162 |
function TSQLDataItem.GetAsString: AnsiString; |
1163 |
var |
1164 |
sz: PByte; |
1165 |
str_len: Integer; |
1166 |
rs: RawByteString; |
1167 |
begin |
1168 |
CheckActive; |
1169 |
result := ''; |
1170 |
{ Check null, if so return a default string } |
1171 |
if not IsNull then |
1172 |
with FFirebirdClientAPI do |
1173 |
case SQLType of |
1174 |
SQL_BOOLEAN: |
1175 |
if AsBoolean then |
1176 |
Result := sTrue |
1177 |
else |
1178 |
Result := SFalse; |
1179 |
|
1180 |
SQL_TEXT, SQL_VARYING: |
1181 |
begin |
1182 |
sz := SQLData; |
1183 |
if (SQLType = SQL_TEXT) then |
1184 |
str_len := DataLength |
1185 |
else begin |
1186 |
str_len := DecodeInteger(SQLData, 2); |
1187 |
Inc(sz, 2); |
1188 |
end; |
1189 |
SetString(rs, PAnsiChar(sz), str_len); |
1190 |
SetCodePage(rs,GetCodePage,false); |
1191 |
if (SQLType = SQL_TEXT) and (GetCharSetID <> 1) then |
1192 |
Result := TrimRight(rs) |
1193 |
else |
1194 |
Result := rs |
1195 |
end; |
1196 |
SQL_TYPE_DATE: |
1197 |
result := FormatDateTime(GetDateFormatStr(TimeOf(AsDateTime)<>0),AsDateTime); |
1198 |
SQL_TYPE_TIME : |
1199 |
result := FormatDateTime(GetTimeFormatStr,AsDateTime); |
1200 |
SQL_TIMESTAMP: |
1201 |
result := FormatDateTime(GetTimestampFormatStr,AsDateTime); |
1202 |
SQL_SHORT, SQL_LONG: |
1203 |
if Scale = 0 then |
1204 |
result := IntToStr(AsLong) |
1205 |
else if Scale >= (-4) then |
1206 |
result := CurrToStr(AsCurrency) |
1207 |
else |
1208 |
result := FloatToStr(AsDouble); |
1209 |
SQL_INT64: |
1210 |
if Scale = 0 then |
1211 |
result := IntToStr(AsInt64) |
1212 |
else if Scale >= (-4) then |
1213 |
result := CurrToStr(AsCurrency) |
1214 |
else |
1215 |
result := FloatToStr(AsDouble); |
1216 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: |
1217 |
result := FloatToStr(AsDouble); |
1218 |
else |
1219 |
IBError(ibxeInvalidDataConversion, [nil]); |
1220 |
end; |
1221 |
end; |
1222 |
|
1223 |
function TSQLDataItem.GetIsNull: Boolean; |
1224 |
begin |
1225 |
CheckActive; |
1226 |
Result := false; |
1227 |
end; |
1228 |
|
1229 |
function TSQLDataItem.GetIsNullable: boolean; |
1230 |
begin |
1231 |
CheckActive; |
1232 |
Result := false; |
1233 |
end; |
1234 |
|
1235 |
function TSQLDataItem.GetAsVariant: Variant; |
1236 |
begin |
1237 |
CheckActive; |
1238 |
if IsNull then |
1239 |
result := NULL |
1240 |
{ Check null, if so return a default string } |
1241 |
else case SQLType of |
1242 |
SQL_ARRAY: |
1243 |
result := '(Array)'; {do not localize} |
1244 |
SQL_BLOB, |
1245 |
SQL_TEXT, SQL_VARYING: |
1246 |
result := AsString; |
1247 |
SQL_TIMESTAMP, SQL_TYPE_DATE, SQL_TYPE_TIME: |
1248 |
result := AsDateTime; |
1249 |
SQL_SHORT, SQL_LONG: |
1250 |
if Scale = 0 then |
1251 |
result := AsLong |
1252 |
else if Scale >= (-4) then |
1253 |
result := AsCurrency |
1254 |
else |
1255 |
result := AsDouble; |
1256 |
SQL_INT64: |
1257 |
if Scale = 0 then |
1258 |
result := AsInt64 |
1259 |
else if Scale >= (-4) then |
1260 |
result := AsCurrency |
1261 |
else |
1262 |
result := AsDouble; |
1263 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: |
1264 |
result := AsDouble; |
1265 |
SQL_BOOLEAN: |
1266 |
result := AsBoolean; |
1267 |
else |
1268 |
IBError(ibxeInvalidDataConversion, [nil]); |
1269 |
end; |
1270 |
end; |
1271 |
|
1272 |
function TSQLDataItem.GetModified: boolean; |
1273 |
begin |
1274 |
Result := false; |
1275 |
end; |
1276 |
|
1277 |
function TSQLDataItem.GetDateTimeStrLength(DateTimeFormat: TIBDateTimeFormats |
1278 |
): integer; |
1279 |
begin |
1280 |
case DateTimeFormat of |
1281 |
dfTimestamp: |
1282 |
Result := Length(GetTimestampFormatStr); |
1283 |
dfDateTime: |
1284 |
Result := Length(GetDateFormatStr(true)); |
1285 |
dfTime: |
1286 |
Result := Length(GetTimeFormatStr); |
1287 |
else |
1288 |
Result := 0; |
1289 |
end; |
1290 |
end; |
1291 |
|
1292 |
|
1293 |
procedure TSQLDataItem.SetIsNull(Value: Boolean); |
1294 |
begin |
1295 |
//ignore unless overridden |
1296 |
end; |
1297 |
|
1298 |
procedure TSQLDataItem.SetIsNullable(Value: Boolean); |
1299 |
begin |
1300 |
//ignore unless overridden |
1301 |
end; |
1302 |
|
1303 |
procedure TSQLDataItem.SetName(aValue: AnsiString); |
1304 |
begin |
1305 |
//ignore unless overridden |
1306 |
end; |
1307 |
|
1308 |
procedure TSQLDataItem.SetAsCurrency(Value: Currency); |
1309 |
begin |
1310 |
CheckActive; |
1311 |
if GetSQLDialect < 3 then |
1312 |
AsDouble := Value |
1313 |
else |
1314 |
begin |
1315 |
Changing; |
1316 |
if IsNullable then |
1317 |
IsNull := False; |
1318 |
SQLType := SQL_INT64; |
1319 |
Scale := -4; |
1320 |
DataLength := SizeOf(Int64); |
1321 |
PCurrency(SQLData)^ := Value; |
1322 |
Changed; |
1323 |
end; |
1324 |
end; |
1325 |
|
1326 |
procedure TSQLDataItem.SetAsInt64(Value: Int64); |
1327 |
begin |
1328 |
CheckActive; |
1329 |
Changing; |
1330 |
if IsNullable then |
1331 |
IsNull := False; |
1332 |
|
1333 |
SQLType := SQL_INT64; |
1334 |
Scale := 0; |
1335 |
DataLength := SizeOf(Int64); |
1336 |
PInt64(SQLData)^ := Value; |
1337 |
Changed; |
1338 |
end; |
1339 |
|
1340 |
procedure TSQLDataItem.SetAsDate(Value: TDateTime); |
1341 |
begin |
1342 |
CheckActive; |
1343 |
if GetSQLDialect < 3 then |
1344 |
begin |
1345 |
AsDateTime := Value; |
1346 |
exit; |
1347 |
end; |
1348 |
|
1349 |
Changing; |
1350 |
if IsNullable then |
1351 |
IsNull := False; |
1352 |
|
1353 |
SQLType := SQL_TYPE_DATE; |
1354 |
DataLength := SizeOf(ISC_DATE); |
1355 |
with FFirebirdClientAPI do |
1356 |
SQLEncodeDate(Value,SQLData); |
1357 |
Changed; |
1358 |
end; |
1359 |
|
1360 |
procedure TSQLDataItem.SetAsTime(Value: TDateTime); |
1361 |
begin |
1362 |
CheckActive; |
1363 |
if GetSQLDialect < 3 then |
1364 |
begin |
1365 |
AsDateTime := Value; |
1366 |
exit; |
1367 |
end; |
1368 |
|
1369 |
Changing; |
1370 |
if IsNullable then |
1371 |
IsNull := False; |
1372 |
|
1373 |
SQLType := SQL_TYPE_TIME; |
1374 |
DataLength := SizeOf(ISC_TIME); |
1375 |
with FFirebirdClientAPI do |
1376 |
SQLEncodeTime(Value,SQLData); |
1377 |
Changed; |
1378 |
end; |
1379 |
|
1380 |
procedure TSQLDataItem.SetAsDateTime(Value: TDateTime); |
1381 |
begin |
1382 |
CheckActive; |
1383 |
if IsNullable then |
1384 |
IsNull := False; |
1385 |
|
1386 |
Changing; |
1387 |
SQLType := SQL_TIMESTAMP; |
1388 |
DataLength := SizeOf(ISC_TIME) + sizeof(ISC_DATE); |
1389 |
with FFirebirdClientAPI do |
1390 |
SQLEncodeDateTime(Value,SQLData); |
1391 |
Changed; |
1392 |
end; |
1393 |
|
1394 |
procedure TSQLDataItem.SetAsDouble(Value: Double); |
1395 |
begin |
1396 |
CheckActive; |
1397 |
if IsNullable then |
1398 |
IsNull := False; |
1399 |
|
1400 |
Changing; |
1401 |
SQLType := SQL_DOUBLE; |
1402 |
DataLength := SizeOf(Double); |
1403 |
Scale := 0; |
1404 |
PDouble(SQLData)^ := Value; |
1405 |
Changed; |
1406 |
end; |
1407 |
|
1408 |
procedure TSQLDataItem.SetAsFloat(Value: Float); |
1409 |
begin |
1410 |
CheckActive; |
1411 |
if IsNullable then |
1412 |
IsNull := False; |
1413 |
|
1414 |
Changing; |
1415 |
SQLType := SQL_FLOAT; |
1416 |
DataLength := SizeOf(Float); |
1417 |
Scale := 0; |
1418 |
PSingle(SQLData)^ := Value; |
1419 |
Changed; |
1420 |
end; |
1421 |
|
1422 |
procedure TSQLDataItem.SetAsLong(Value: Long); |
1423 |
begin |
1424 |
CheckActive; |
1425 |
if IsNullable then |
1426 |
IsNull := False; |
1427 |
|
1428 |
Changing; |
1429 |
SQLType := SQL_LONG; |
1430 |
DataLength := SizeOf(Long); |
1431 |
Scale := 0; |
1432 |
PLong(SQLData)^ := Value; |
1433 |
Changed; |
1434 |
end; |
1435 |
|
1436 |
procedure TSQLDataItem.SetAsPointer(Value: Pointer); |
1437 |
begin |
1438 |
CheckActive; |
1439 |
Changing; |
1440 |
if IsNullable and (Value = nil) then |
1441 |
IsNull := True |
1442 |
else |
1443 |
begin |
1444 |
IsNull := False; |
1445 |
SQLType := SQL_TEXT; |
1446 |
Move(Value^, SQLData^, DataLength); |
1447 |
end; |
1448 |
Changed; |
1449 |
end; |
1450 |
|
1451 |
procedure TSQLDataItem.SetAsQuad(Value: TISC_QUAD); |
1452 |
begin |
1453 |
CheckActive; |
1454 |
Changing; |
1455 |
if IsNullable then |
1456 |
IsNull := False; |
1457 |
if (SQLType <> SQL_BLOB) and |
1458 |
(SQLType <> SQL_ARRAY) then |
1459 |
IBError(ibxeInvalidDataConversion, [nil]); |
1460 |
DataLength := SizeOf(TISC_QUAD); |
1461 |
PISC_QUAD(SQLData)^ := Value; |
1462 |
Changed; |
1463 |
end; |
1464 |
|
1465 |
procedure TSQLDataItem.SetAsShort(Value: short); |
1466 |
begin |
1467 |
CheckActive; |
1468 |
Changing; |
1469 |
if IsNullable then |
1470 |
IsNull := False; |
1471 |
|
1472 |
SQLType := SQL_SHORT; |
1473 |
DataLength := SizeOf(Short); |
1474 |
Scale := 0; |
1475 |
PShort(SQLData)^ := Value; |
1476 |
Changed; |
1477 |
end; |
1478 |
|
1479 |
procedure TSQLDataItem.SetAsString(Value: AnsiString); |
1480 |
begin |
1481 |
InternalSetAsString(Value); |
1482 |
end; |
1483 |
|
1484 |
procedure TSQLDataItem.SetAsVariant(Value: Variant); |
1485 |
begin |
1486 |
CheckActive; |
1487 |
if VarIsNull(Value) then |
1488 |
IsNull := True |
1489 |
else case VarType(Value) of |
1490 |
varEmpty, varNull: |
1491 |
IsNull := True; |
1492 |
varSmallint, varInteger, varByte, |
1493 |
varWord, varShortInt: |
1494 |
AsLong := Value; |
1495 |
varInt64: |
1496 |
AsInt64 := Value; |
1497 |
varSingle, varDouble: |
1498 |
AsDouble := Value; |
1499 |
varCurrency: |
1500 |
AsCurrency := Value; |
1501 |
varBoolean: |
1502 |
AsBoolean := Value; |
1503 |
varDate: |
1504 |
AsDateTime := Value; |
1505 |
varOleStr, varString: |
1506 |
AsString := Value; |
1507 |
varArray: |
1508 |
IBError(ibxeNotSupported, [nil]); |
1509 |
varByRef, varDispatch, varError, varUnknown, varVariant: |
1510 |
IBError(ibxeNotPermitted, [nil]); |
1511 |
end; |
1512 |
end; |
1513 |
|
1514 |
procedure TSQLDataItem.SetAsNumeric(Value: Int64; aScale: integer); |
1515 |
begin |
1516 |
CheckActive; |
1517 |
Changing; |
1518 |
if IsNullable then |
1519 |
IsNull := False; |
1520 |
|
1521 |
SQLType := SQL_INT64; |
1522 |
Scale := aScale; |
1523 |
DataLength := SizeOf(Int64); |
1524 |
PInt64(SQLData)^ := Value; |
1525 |
Changed; |
1526 |
end; |
1527 |
|
1528 |
procedure TSQLDataItem.SetAsBoolean(AValue: boolean); |
1529 |
begin |
1530 |
CheckActive; |
1531 |
Changing; |
1532 |
if IsNullable then |
1533 |
IsNull := False; |
1534 |
|
1535 |
SQLType := SQL_BOOLEAN; |
1536 |
DataLength := 1; |
1537 |
Scale := 0; |
1538 |
if AValue then |
1539 |
PByte(SQLData)^ := ISC_TRUE |
1540 |
else |
1541 |
PByte(SQLData)^ := ISC_FALSE; |
1542 |
Changed; |
1543 |
end; |
1544 |
|
1545 |
{TColumnMetaData} |
1546 |
|
1547 |
procedure TColumnMetaData.CheckActive; |
1548 |
begin |
1549 |
if not FIBXSQLVAR.Parent.StateChanged(FChangeSeqNo) then Exit; |
1550 |
|
1551 |
if FPrepareSeqNo < FIBXSQLVAR.Parent.GetPrepareSeqNo then |
1552 |
IBError(ibxeInterfaceOutofDate,[nil]); |
1553 |
|
1554 |
if not FIBXSQLVAR.Parent.CheckStatementStatus(ssPrepared) then |
1555 |
IBError(ibxeStatementNotPrepared, [nil]); |
1556 |
end; |
1557 |
|
1558 |
function TColumnMetaData.SQLData: PByte; |
1559 |
begin |
1560 |
Result := FIBXSQLVAR.SQLData; |
1561 |
end; |
1562 |
|
1563 |
function TColumnMetaData.GetDataLength: cardinal; |
1564 |
begin |
1565 |
Result := FIBXSQLVAR.DataLength; |
1566 |
end; |
1567 |
|
1568 |
function TColumnMetaData.GetCodePage: TSystemCodePage; |
1569 |
begin |
1570 |
Result := FIBXSQLVAR.GetCodePage; |
1571 |
end; |
1572 |
|
1573 |
constructor TColumnMetaData.Create(aOwner: IUnknown; aIBXSQLVAR: TSQLVarData); |
1574 |
begin |
1575 |
inherited Create(aIBXSQLVAR.GetStatement.GetAttachment.getFirebirdAPI as TFBClientAPI); |
1576 |
FIBXSQLVAR := aIBXSQLVAR; |
1577 |
FOwner := aOwner; |
1578 |
FPrepareSeqNo := FIBXSQLVAR.Parent.PrepareSeqNo; |
1579 |
FIBXSQLVAR.Parent.StateChanged(FChangeSeqNo) |
1580 |
end; |
1581 |
|
1582 |
destructor TColumnMetaData.Destroy; |
1583 |
begin |
1584 |
(FOwner as TInterfaceOwner).Remove(self); |
1585 |
inherited Destroy; |
1586 |
end; |
1587 |
|
1588 |
|
1589 |
function TColumnMetaData.GetSQLDialect: integer; |
1590 |
begin |
1591 |
Result := FIBXSQLVAR.Statement.GetSQLDialect; |
1592 |
end; |
1593 |
|
1594 |
function TColumnMetaData.GetIndex: integer; |
1595 |
begin |
1596 |
Result := FIBXSQLVAR.Index; |
1597 |
end; |
1598 |
|
1599 |
function TColumnMetaData.GetSQLType: cardinal; |
1600 |
begin |
1601 |
CheckActive; |
1602 |
result := FIBXSQLVAR.SQLType; |
1603 |
end; |
1604 |
|
1605 |
function TColumnMetaData.getSubtype: integer; |
1606 |
begin |
1607 |
CheckActive; |
1608 |
result := FIBXSQLVAR.SQLSubtype; |
1609 |
end; |
1610 |
|
1611 |
function TColumnMetaData.getRelationName: AnsiString; |
1612 |
begin |
1613 |
CheckActive; |
1614 |
result := FIBXSQLVAR.RelationName; |
1615 |
end; |
1616 |
|
1617 |
function TColumnMetaData.getOwnerName: AnsiString; |
1618 |
begin |
1619 |
CheckActive; |
1620 |
result := FIBXSQLVAR.OwnerName; |
1621 |
end; |
1622 |
|
1623 |
function TColumnMetaData.getSQLName: AnsiString; |
1624 |
begin |
1625 |
CheckActive; |
1626 |
result := FIBXSQLVAR.FieldName; |
1627 |
end; |
1628 |
|
1629 |
function TColumnMetaData.getAliasName: AnsiString; |
1630 |
begin |
1631 |
CheckActive; |
1632 |
result := FIBXSQLVAR.AliasName; |
1633 |
end; |
1634 |
|
1635 |
function TColumnMetaData.GetName: AnsiString; |
1636 |
begin |
1637 |
CheckActive; |
1638 |
Result := FIBXSQLVAR. Name; |
1639 |
end; |
1640 |
|
1641 |
function TColumnMetaData.GetScale: integer; |
1642 |
begin |
1643 |
CheckActive; |
1644 |
result := FIBXSQLVAR.Scale; |
1645 |
end; |
1646 |
|
1647 |
function TColumnMetaData.getCharSetID: cardinal; |
1648 |
begin |
1649 |
CheckActive; |
1650 |
Result := FIBXSQLVAR.CharSetID; |
1651 |
end; |
1652 |
|
1653 |
function TColumnMetaData.GetIsNullable: boolean; |
1654 |
begin |
1655 |
CheckActive; |
1656 |
result := FIBXSQLVAR.IsNullable; |
1657 |
end; |
1658 |
|
1659 |
function TColumnMetaData.GetSize: cardinal; |
1660 |
begin |
1661 |
CheckActive; |
1662 |
result := FIBXSQLVAR.DataLength; |
1663 |
end; |
1664 |
|
1665 |
function TColumnMetaData.GetArrayMetaData: IArrayMetaData; |
1666 |
begin |
1667 |
CheckActive; |
1668 |
result := FIBXSQLVAR.GetArrayMetaData; |
1669 |
end; |
1670 |
|
1671 |
function TColumnMetaData.GetBlobMetaData: IBlobMetaData; |
1672 |
begin |
1673 |
CheckActive; |
1674 |
result := FIBXSQLVAR.GetBlobMetaData; |
1675 |
end; |
1676 |
|
1677 |
{ TIBSQLData } |
1678 |
|
1679 |
procedure TIBSQLData.CheckActive; |
1680 |
begin |
1681 |
if not FIBXSQLVAR.Parent.StateChanged(FChangeSeqNo) then Exit; |
1682 |
|
1683 |
inherited CheckActive; |
1684 |
|
1685 |
if not FIBXSQLVAR.Parent.CheckStatementStatus(ssCursorOpen) and |
1686 |
not FIBXSQLVAR.Parent.CheckStatementStatus(ssExecuteResults) then |
1687 |
IBError(ibxeSQLClosed, [nil]); |
1688 |
|
1689 |
if FIBXSQLVAR.Parent.CheckStatementStatus(ssEOF) then |
1690 |
IBError(ibxeEOF,[nil]); |
1691 |
|
1692 |
if FIBXSQLVAR.Parent.CheckStatementStatus(ssBOF) then |
1693 |
IBError(ibxeBOF,[nil]); |
1694 |
end; |
1695 |
|
1696 |
function TIBSQLData.GetIsNull: Boolean; |
1697 |
begin |
1698 |
CheckActive; |
1699 |
result := FIBXSQLVAR.IsNull; |
1700 |
end; |
1701 |
|
1702 |
function TIBSQLData.GetAsArray: IArray; |
1703 |
begin |
1704 |
CheckActive; |
1705 |
result := FIBXSQLVAR.GetAsArray(AsQuad); |
1706 |
end; |
1707 |
|
1708 |
function TIBSQLData.GetAsBlob: IBlob; |
1709 |
begin |
1710 |
CheckActive; |
1711 |
result := FIBXSQLVAR.GetAsBlob(AsQuad,nil); |
1712 |
end; |
1713 |
|
1714 |
function TIBSQLData.GetAsBlob(BPB: IBPB): IBlob; |
1715 |
begin |
1716 |
CheckActive; |
1717 |
result := FIBXSQLVAR.GetAsBlob(AsQuad,BPB); |
1718 |
end; |
1719 |
|
1720 |
function TIBSQLData.GetAsString: AnsiString; |
1721 |
begin |
1722 |
CheckActive; |
1723 |
Result := ''; |
1724 |
{ Check null, if so return a default string } |
1725 |
if not IsNull then |
1726 |
case SQLType of |
1727 |
SQL_ARRAY: |
1728 |
result := SArray; |
1729 |
SQL_BLOB: |
1730 |
Result := FIBXSQLVAR.GetAsBlob(AsQuad,nil).GetAsString; |
1731 |
else |
1732 |
Result := inherited GetAsString; |
1733 |
end; |
1734 |
end; |
1735 |
|
1736 |
{ TSQLParam } |
1737 |
|
1738 |
procedure TSQLParam.InternalSetAsString(Value: AnsiString); |
1739 |
|
1740 |
procedure DoSetString; |
1741 |
begin |
1742 |
Changing; |
1743 |
FIBXSQLVar.SetString(Transliterate(Value,GetCodePage)); |
1744 |
Changed; |
1745 |
end; |
1746 |
|
1747 |
var b: IBlob; |
1748 |
dt: TDateTime; |
1749 |
CurrValue: Currency; |
1750 |
FloatValue: single; |
1751 |
begin |
1752 |
CheckActive; |
1753 |
if IsNullable then |
1754 |
IsNull := False; |
1755 |
case SQLTYPE of |
1756 |
SQL_BOOLEAN: |
1757 |
if AnsiCompareText(Value,STrue) = 0 then |
1758 |
AsBoolean := true |
1759 |
else |
1760 |
if AnsiCompareText(Value,SFalse) = 0 then |
1761 |
AsBoolean := false |
1762 |
else |
1763 |
IBError(ibxeInvalidDataConversion,[nil]); |
1764 |
|
1765 |
SQL_BLOB: |
1766 |
begin |
1767 |
Changing; |
1768 |
b := FIBXSQLVAR.CreateBlob; |
1769 |
b.SetAsString(Value); |
1770 |
AsBlob := b; |
1771 |
Changed; |
1772 |
end; |
1773 |
|
1774 |
SQL_VARYING, |
1775 |
SQL_TEXT: |
1776 |
DoSetString; |
1777 |
|
1778 |
SQL_SHORT, |
1779 |
SQL_LONG, |
1780 |
SQL_INT64: |
1781 |
if TryStrToCurr(Value,CurrValue) then |
1782 |
SetAsNumeric(AdjustScaleFromCurrency(CurrValue,GetScale),GetScale) |
1783 |
else |
1784 |
DoSetString; |
1785 |
|
1786 |
SQL_D_FLOAT, |
1787 |
SQL_DOUBLE, |
1788 |
SQL_FLOAT: |
1789 |
if TryStrToFloat(Value,FloatValue) then |
1790 |
SetAsDouble(FloatValue) |
1791 |
else |
1792 |
DoSetString; |
1793 |
|
1794 |
SQL_TIMESTAMP: |
1795 |
if TryStrToDateTime(Value,dt) then |
1796 |
SetAsDateTime(dt) |
1797 |
else |
1798 |
DoSetString; |
1799 |
|
1800 |
SQL_TYPE_DATE: |
1801 |
if TryStrToDateTime(Value,dt) then |
1802 |
SetAsDate(dt) |
1803 |
else |
1804 |
DoSetString; |
1805 |
|
1806 |
SQL_TYPE_TIME: |
1807 |
if TryStrToDateTime(Value,dt) then |
1808 |
SetAsTime(dt) |
1809 |
else |
1810 |
DoSetString; |
1811 |
|
1812 |
else |
1813 |
IBError(ibxeInvalidDataConversion,[nil]); |
1814 |
end; |
1815 |
end; |
1816 |
|
1817 |
procedure TSQLParam.CheckActive; |
1818 |
begin |
1819 |
if not FIBXSQLVAR.Parent.StateChanged(FChangeSeqNo) then Exit; |
1820 |
|
1821 |
if FPrepareSeqNo < FIBXSQLVAR.Parent.GetPrepareSeqNo then |
1822 |
IBError(ibxeInterfaceOutofDate,[nil]); |
1823 |
|
1824 |
if not FIBXSQLVAR.Parent.CheckStatementStatus(ssPrepared) then |
1825 |
IBError(ibxeStatementNotPrepared, [nil]); |
1826 |
end; |
1827 |
|
1828 |
procedure TSQLParam.SetScale(aValue: integer); |
1829 |
begin |
1830 |
CheckActive; |
1831 |
FIBXSQLVAR.Scale := aValue; |
1832 |
end; |
1833 |
|
1834 |
procedure TSQLParam.SetDataLength(len: cardinal); |
1835 |
begin |
1836 |
CheckActive; |
1837 |
FIBXSQLVAR.DataLength := len; |
1838 |
end; |
1839 |
|
1840 |
procedure TSQLParam.SetSQLType(aValue: cardinal); |
1841 |
begin |
1842 |
CheckActive; |
1843 |
FIBXSQLVAR.SQLType := aValue; |
1844 |
end; |
1845 |
|
1846 |
procedure TSQLParam.Clear; |
1847 |
begin |
1848 |
IsNull := true; |
1849 |
end; |
1850 |
|
1851 |
function TSQLParam.GetModified: boolean; |
1852 |
begin |
1853 |
CheckActive; |
1854 |
Result := FIBXSQLVAR.Modified; |
1855 |
end; |
1856 |
|
1857 |
function TSQLParam.GetAsPointer: Pointer; |
1858 |
begin |
1859 |
IsNull := false; {Assume that we get the pointer in order to set a value} |
1860 |
Changed; |
1861 |
Result := inherited GetAsPointer; |
1862 |
end; |
1863 |
|
1864 |
procedure TSQLParam.SetName(Value: AnsiString); |
1865 |
begin |
1866 |
CheckActive; |
1867 |
FIBXSQLVAR.Name := Value; |
1868 |
end; |
1869 |
|
1870 |
procedure TSQLParam.SetIsNull(Value: Boolean); |
1871 |
var i: integer; |
1872 |
begin |
1873 |
CheckActive; |
1874 |
if FIBXSQLVAR.UniqueName then |
1875 |
FIBXSQLVAR.IsNull := Value |
1876 |
else |
1877 |
with FIBXSQLVAR.Parent do |
1878 |
begin |
1879 |
for i := 0 to Count - 1 do |
1880 |
if Column[i].Name = Name then |
1881 |
Column[i].IsNull := Value; |
1882 |
end |
1883 |
end; |
1884 |
|
1885 |
procedure TSQLParam.SetIsNullable(Value: Boolean); |
1886 |
var i: integer; |
1887 |
begin |
1888 |
CheckActive; |
1889 |
if FIBXSQLVAR.UniqueName then |
1890 |
FIBXSQLVAR.IsNullable := Value |
1891 |
else |
1892 |
with FIBXSQLVAR.Parent do |
1893 |
begin |
1894 |
for i := 0 to Count - 1 do |
1895 |
if Column[i].Name = Name then |
1896 |
Column[i].IsNullable := Value; |
1897 |
end |
1898 |
end; |
1899 |
|
1900 |
procedure TSQLParam.SetAsArray(anArray: IArray); |
1901 |
begin |
1902 |
CheckActive; |
1903 |
if GetSQLType <> SQL_ARRAY then |
1904 |
IBError(ibxeInvalidDataConversion,[nil]); |
1905 |
|
1906 |
if not FIBXSQLVAR.UniqueName then |
1907 |
IBError(ibxeDuplicateParamName,[FIBXSQLVAR.Name]); |
1908 |
|
1909 |
SetAsQuad(AnArray.GetArrayID); |
1910 |
end; |
1911 |
|
1912 |
procedure TSQLParam.Changed; |
1913 |
begin |
1914 |
FIBXSQLVAR.Changed; |
1915 |
end; |
1916 |
|
1917 |
procedure TSQLParam.SetAsBoolean(AValue: boolean); |
1918 |
var i: integer; |
1919 |
OldSQLVar: TSQLVarData; |
1920 |
begin |
1921 |
if FIBXSQLVAR.UniqueName then |
1922 |
inherited SetAsBoolean(AValue) |
1923 |
else |
1924 |
with FIBXSQLVAR.Parent do |
1925 |
begin |
1926 |
for i := 0 to Count - 1 do |
1927 |
if Column[i].Name = Name then |
1928 |
begin |
1929 |
OldSQLVar := FIBXSQLVAR; |
1930 |
FIBXSQLVAR := Column[i]; |
1931 |
try |
1932 |
inherited SetAsBoolean(AValue); |
1933 |
finally |
1934 |
FIBXSQLVAR := OldSQLVar; |
1935 |
end; |
1936 |
end; |
1937 |
end; |
1938 |
end; |
1939 |
|
1940 |
procedure TSQLParam.SetAsCurrency(AValue: Currency); |
1941 |
var i: integer; |
1942 |
OldSQLVar: TSQLVarData; |
1943 |
begin |
1944 |
if FIBXSQLVAR.UniqueName then |
1945 |
inherited SetAsCurrency(AValue) |
1946 |
else |
1947 |
with FIBXSQLVAR.Parent do |
1948 |
begin |
1949 |
for i := 0 to Count - 1 do |
1950 |
if Column[i].Name = Name then |
1951 |
begin |
1952 |
OldSQLVar := FIBXSQLVAR; |
1953 |
FIBXSQLVAR := Column[i]; |
1954 |
try |
1955 |
inherited SetAsCurrency(AValue); |
1956 |
finally |
1957 |
FIBXSQLVAR := OldSQLVar; |
1958 |
end; |
1959 |
end; |
1960 |
end; |
1961 |
end; |
1962 |
|
1963 |
procedure TSQLParam.SetAsInt64(AValue: Int64); |
1964 |
var i: integer; |
1965 |
OldSQLVar: TSQLVarData; |
1966 |
begin |
1967 |
if FIBXSQLVAR.UniqueName then |
1968 |
inherited SetAsInt64(AValue) |
1969 |
else |
1970 |
with FIBXSQLVAR.Parent do |
1971 |
begin |
1972 |
for i := 0 to Count - 1 do |
1973 |
if Column[i].Name = Name then |
1974 |
begin |
1975 |
OldSQLVar := FIBXSQLVAR; |
1976 |
FIBXSQLVAR := Column[i]; |
1977 |
try |
1978 |
inherited SetAsInt64(AValue); |
1979 |
finally |
1980 |
FIBXSQLVAR := OldSQLVar; |
1981 |
end; |
1982 |
end; |
1983 |
end; |
1984 |
end; |
1985 |
|
1986 |
procedure TSQLParam.SetAsDate(AValue: TDateTime); |
1987 |
var i: integer; |
1988 |
OldSQLVar: TSQLVarData; |
1989 |
begin |
1990 |
if FIBXSQLVAR.UniqueName then |
1991 |
inherited SetAsDate(AValue) |
1992 |
else |
1993 |
with FIBXSQLVAR.Parent do |
1994 |
begin |
1995 |
for i := 0 to Count - 1 do |
1996 |
if Column[i].Name = Name then |
1997 |
begin |
1998 |
OldSQLVar := FIBXSQLVAR; |
1999 |
FIBXSQLVAR := Column[i]; |
2000 |
try |
2001 |
inherited SetAsDate(AValue); |
2002 |
finally |
2003 |
FIBXSQLVAR := OldSQLVar; |
2004 |
end; |
2005 |
end; |
2006 |
end; |
2007 |
end; |
2008 |
|
2009 |
procedure TSQLParam.SetAsLong(AValue: Long); |
2010 |
var i: integer; |
2011 |
OldSQLVar: TSQLVarData; |
2012 |
begin |
2013 |
if FIBXSQLVAR.UniqueName then |
2014 |
inherited SetAsLong(AValue) |
2015 |
else |
2016 |
with FIBXSQLVAR.Parent do |
2017 |
begin |
2018 |
for i := 0 to Count - 1 do |
2019 |
if Column[i].Name = Name then |
2020 |
begin |
2021 |
OldSQLVar := FIBXSQLVAR; |
2022 |
FIBXSQLVAR := Column[i]; |
2023 |
try |
2024 |
inherited SetAsLong(AValue); |
2025 |
finally |
2026 |
FIBXSQLVAR := OldSQLVar; |
2027 |
end; |
2028 |
end; |
2029 |
end; |
2030 |
end; |
2031 |
|
2032 |
procedure TSQLParam.SetAsTime(AValue: TDateTime); |
2033 |
var i: integer; |
2034 |
OldSQLVar: TSQLVarData; |
2035 |
begin |
2036 |
if FIBXSQLVAR.UniqueName then |
2037 |
inherited SetAsTime(AValue) |
2038 |
else |
2039 |
with FIBXSQLVAR.Parent do |
2040 |
begin |
2041 |
for i := 0 to Count - 1 do |
2042 |
if Column[i].Name = Name then |
2043 |
begin |
2044 |
OldSQLVar := FIBXSQLVAR; |
2045 |
FIBXSQLVAR := Column[i]; |
2046 |
try |
2047 |
inherited SetAsTime(AValue); |
2048 |
finally |
2049 |
FIBXSQLVAR := OldSQLVar; |
2050 |
end; |
2051 |
end; |
2052 |
end; |
2053 |
end; |
2054 |
|
2055 |
procedure TSQLParam.SetAsDateTime(AValue: TDateTime); |
2056 |
var i: integer; |
2057 |
OldSQLVar: TSQLVarData; |
2058 |
begin |
2059 |
if FIBXSQLVAR.UniqueName then |
2060 |
inherited SetAsDateTime(AValue) |
2061 |
else |
2062 |
with FIBXSQLVAR.Parent do |
2063 |
begin |
2064 |
for i := 0 to Count - 1 do |
2065 |
if Column[i].Name = Name then |
2066 |
begin |
2067 |
OldSQLVar := FIBXSQLVAR; |
2068 |
FIBXSQLVAR := Column[i]; |
2069 |
try |
2070 |
inherited SetAsDateTime(AValue); |
2071 |
finally |
2072 |
FIBXSQLVAR := OldSQLVar; |
2073 |
end; |
2074 |
end; |
2075 |
end; |
2076 |
end; |
2077 |
|
2078 |
procedure TSQLParam.SetAsDouble(AValue: Double); |
2079 |
var i: integer; |
2080 |
OldSQLVar: TSQLVarData; |
2081 |
begin |
2082 |
if FIBXSQLVAR.UniqueName then |
2083 |
inherited SetAsDouble(AValue) |
2084 |
else |
2085 |
with FIBXSQLVAR.Parent do |
2086 |
begin |
2087 |
for i := 0 to Count - 1 do |
2088 |
if Column[i].Name = Name then |
2089 |
begin |
2090 |
OldSQLVar := FIBXSQLVAR; |
2091 |
FIBXSQLVAR := Column[i]; |
2092 |
try |
2093 |
inherited SetAsDouble(AValue); |
2094 |
finally |
2095 |
FIBXSQLVAR := OldSQLVar; |
2096 |
end; |
2097 |
end; |
2098 |
end; |
2099 |
end; |
2100 |
|
2101 |
procedure TSQLParam.SetAsFloat(AValue: Float); |
2102 |
var i: integer; |
2103 |
OldSQLVar: TSQLVarData; |
2104 |
begin |
2105 |
if FIBXSQLVAR.UniqueName then |
2106 |
inherited SetAsFloat(AValue) |
2107 |
else |
2108 |
with FIBXSQLVAR.Parent do |
2109 |
begin |
2110 |
for i := 0 to Count - 1 do |
2111 |
if Column[i].Name = Name then |
2112 |
begin |
2113 |
OldSQLVar := FIBXSQLVAR; |
2114 |
FIBXSQLVAR := Column[i]; |
2115 |
try |
2116 |
inherited SetAsFloat(AValue); |
2117 |
finally |
2118 |
FIBXSQLVAR := OldSQLVar; |
2119 |
end; |
2120 |
end; |
2121 |
end; |
2122 |
end; |
2123 |
|
2124 |
procedure TSQLParam.SetAsPointer(AValue: Pointer); |
2125 |
var i: integer; |
2126 |
OldSQLVar: TSQLVarData; |
2127 |
begin |
2128 |
if FIBXSQLVAR.UniqueName then |
2129 |
inherited SetAsPointer(AValue) |
2130 |
else |
2131 |
with FIBXSQLVAR.Parent do |
2132 |
begin |
2133 |
for i := 0 to Count - 1 do |
2134 |
if Column[i].Name = Name then |
2135 |
begin |
2136 |
OldSQLVar := FIBXSQLVAR; |
2137 |
FIBXSQLVAR := Column[i]; |
2138 |
try |
2139 |
inherited SetAsPointer(AValue); |
2140 |
finally |
2141 |
FIBXSQLVAR := OldSQLVar; |
2142 |
end; |
2143 |
end; |
2144 |
end; |
2145 |
end; |
2146 |
|
2147 |
procedure TSQLParam.SetAsShort(AValue: Short); |
2148 |
var i: integer; |
2149 |
OldSQLVar: TSQLVarData; |
2150 |
begin |
2151 |
if FIBXSQLVAR.UniqueName then |
2152 |
inherited SetAsShort(AValue) |
2153 |
else |
2154 |
with FIBXSQLVAR.Parent do |
2155 |
begin |
2156 |
for i := 0 to Count - 1 do |
2157 |
if Column[i].Name = Name then |
2158 |
begin |
2159 |
OldSQLVar := FIBXSQLVAR; |
2160 |
FIBXSQLVAR := Column[i]; |
2161 |
try |
2162 |
inherited SetAsShort(AValue); |
2163 |
finally |
2164 |
FIBXSQLVAR := OldSQLVar; |
2165 |
end; |
2166 |
end; |
2167 |
end; |
2168 |
end; |
2169 |
|
2170 |
procedure TSQLParam.SetAsString(AValue: AnsiString); |
2171 |
var i: integer; |
2172 |
OldSQLVar: TSQLVarData; |
2173 |
begin |
2174 |
if FIBXSQLVAR.UniqueName then |
2175 |
InternalSetAsString(AValue) |
2176 |
else |
2177 |
with FIBXSQLVAR.Parent do |
2178 |
begin |
2179 |
for i := 0 to Count - 1 do |
2180 |
if Column[i].Name = Name then |
2181 |
begin |
2182 |
OldSQLVar := FIBXSQLVAR; |
2183 |
FIBXSQLVAR := Column[i]; |
2184 |
try |
2185 |
InternalSetAsString(AValue); |
2186 |
finally |
2187 |
FIBXSQLVAR := OldSQLVar; |
2188 |
end; |
2189 |
end; |
2190 |
end; |
2191 |
end; |
2192 |
|
2193 |
procedure TSQLParam.SetAsVariant(AValue: Variant); |
2194 |
var i: integer; |
2195 |
OldSQLVar: TSQLVarData; |
2196 |
begin |
2197 |
if FIBXSQLVAR.UniqueName then |
2198 |
inherited SetAsVariant(AValue) |
2199 |
else |
2200 |
with FIBXSQLVAR.Parent do |
2201 |
begin |
2202 |
for i := 0 to Count - 1 do |
2203 |
if Column[i].Name = Name then |
2204 |
begin |
2205 |
OldSQLVar := FIBXSQLVAR; |
2206 |
FIBXSQLVAR := Column[i]; |
2207 |
try |
2208 |
inherited SetAsVariant(AValue); |
2209 |
finally |
2210 |
FIBXSQLVAR := OldSQLVar; |
2211 |
end; |
2212 |
end; |
2213 |
end; |
2214 |
end; |
2215 |
|
2216 |
procedure TSQLParam.SetAsBlob(aValue: IBlob); |
2217 |
begin |
2218 |
with FIBXSQLVAR do |
2219 |
if not UniqueName then |
2220 |
IBError(ibxeDuplicateParamName,[Name]); |
2221 |
CheckActive; |
2222 |
Changing; |
2223 |
aValue.Close; |
2224 |
if aValue.GetSubType <> GetSubType then |
2225 |
IBError(ibxeIncompatibleBlob,[GetSubType,aValue.GetSubType]); |
2226 |
AsQuad := aValue.GetBlobID; |
2227 |
Changed; |
2228 |
end; |
2229 |
|
2230 |
procedure TSQLParam.SetAsQuad(AValue: TISC_QUAD); |
2231 |
var i: integer; |
2232 |
OldSQLVar: TSQLVarData; |
2233 |
begin |
2234 |
if FIBXSQLVAR.UniqueName then |
2235 |
inherited SetAsQuad(AValue) |
2236 |
else |
2237 |
with FIBXSQLVAR.Parent do |
2238 |
begin |
2239 |
for i := 0 to Count - 1 do |
2240 |
if Column[i].Name = Name then |
2241 |
begin |
2242 |
OldSQLVar := FIBXSQLVAR; |
2243 |
FIBXSQLVAR := Column[i]; |
2244 |
try |
2245 |
inherited SetAsQuad(AValue); |
2246 |
finally |
2247 |
FIBXSQLVAR := OldSQLVar; |
2248 |
end; |
2249 |
end; |
2250 |
end; |
2251 |
end; |
2252 |
|
2253 |
procedure TSQLParam.SetCharSetID(aValue: cardinal); |
2254 |
begin |
2255 |
FIBXSQLVAR.SetCharSetID(aValue); |
2256 |
end; |
2257 |
|
2258 |
{ TMetaData } |
2259 |
|
2260 |
procedure TMetaData.CheckActive; |
2261 |
begin |
2262 |
if FPrepareSeqNo < FMetaData.PrepareSeqNo then |
2263 |
IBError(ibxeInterfaceOutofDate,[nil]); |
2264 |
|
2265 |
if not FMetaData.CheckStatementStatus(ssPrepared) then |
2266 |
IBError(ibxeStatementNotPrepared, [nil]); |
2267 |
end; |
2268 |
|
2269 |
constructor TMetaData.Create(aMetaData: TSQLDataArea); |
2270 |
begin |
2271 |
inherited Create(aMetaData.Count); |
2272 |
FMetaData := aMetaData; |
2273 |
FStatement := aMetaData.Statement; |
2274 |
FPrepareSeqNo := aMetaData.PrepareSeqNo; |
2275 |
end; |
2276 |
|
2277 |
destructor TMetaData.Destroy; |
2278 |
begin |
2279 |
(FStatement as TInterfaceOwner).Remove(self); |
2280 |
inherited Destroy; |
2281 |
end; |
2282 |
|
2283 |
function TMetaData.GetUniqueRelationName: AnsiString; |
2284 |
begin |
2285 |
CheckActive; |
2286 |
Result := FMetaData.UniqueRelationName; |
2287 |
end; |
2288 |
|
2289 |
function TMetaData.getCount: integer; |
2290 |
begin |
2291 |
CheckActive; |
2292 |
Result := FMetaData.ColumnsInUseCount; |
2293 |
end; |
2294 |
|
2295 |
function TMetaData.getColumnMetaData(index: integer): IColumnMetaData; |
2296 |
begin |
2297 |
CheckActive; |
2298 |
if (index < 0) or (index >= getCount) then |
2299 |
IBError(ibxeInvalidColumnIndex,[nil]); |
2300 |
|
2301 |
if FMetaData.Count = 0 then |
2302 |
Result := nil |
2303 |
else |
2304 |
begin |
2305 |
if not HasInterface(index) then |
2306 |
AddInterface(index,TColumnMetaData.Create(self,FMetaData.Column[index])); |
2307 |
Result := TColumnMetaData(GetInterface(index)); |
2308 |
end; |
2309 |
end; |
2310 |
|
2311 |
function TMetaData.ByName(Idx: AnsiString): IColumnMetaData; |
2312 |
var aIBXSQLVAR: TSQLVarData; |
2313 |
begin |
2314 |
CheckActive; |
2315 |
aIBXSQLVAR := FMetaData.ColumnByName(Idx); |
2316 |
if aIBXSQLVAR = nil then |
2317 |
IBError(ibxeFieldNotFound,[Idx]); |
2318 |
Result := getColumnMetaData(aIBXSQLVAR.index); |
2319 |
end; |
2320 |
|
2321 |
{ TSQLParams } |
2322 |
|
2323 |
procedure TSQLParams.CheckActive; |
2324 |
begin |
2325 |
if not FSQLParams.StateChanged(FChangeSeqNo) then Exit; |
2326 |
|
2327 |
if FPrepareSeqNo < FSQLParams.PrepareSeqNo then |
2328 |
IBError(ibxeInterfaceOutofDate,[nil]); |
2329 |
|
2330 |
if not FSQLParams.CheckStatementStatus(ssPrepared) then |
2331 |
IBError(ibxeStatementNotPrepared, [nil]); |
2332 |
end; |
2333 |
|
2334 |
constructor TSQLParams.Create(aSQLParams: TSQLDataArea); |
2335 |
begin |
2336 |
inherited Create(aSQLParams.Count); |
2337 |
FSQLParams := aSQLParams; |
2338 |
FStatement := aSQLParams.Statement; |
2339 |
FPrepareSeqNo := aSQLParams.PrepareSeqNo; |
2340 |
FSQLParams.StateChanged(FChangeSeqNo); |
2341 |
end; |
2342 |
|
2343 |
destructor TSQLParams.Destroy; |
2344 |
begin |
2345 |
(FStatement as TInterfaceOwner).Remove(self); |
2346 |
inherited Destroy; |
2347 |
end; |
2348 |
|
2349 |
function TSQLParams.getCount: integer; |
2350 |
begin |
2351 |
CheckActive; |
2352 |
Result := FSQLParams.ColumnsInUseCount; |
2353 |
end; |
2354 |
|
2355 |
function TSQLParams.getSQLParam(index: integer): ISQLParam; |
2356 |
begin |
2357 |
CheckActive; |
2358 |
if (index < 0) or (index >= getCount) then |
2359 |
IBError(ibxeInvalidColumnIndex,[nil]); |
2360 |
|
2361 |
if getCount = 0 then |
2362 |
Result := nil |
2363 |
else |
2364 |
begin |
2365 |
if not HasInterface(index) then |
2366 |
AddInterface(index, TSQLParam.Create(self,FSQLParams.Column[index])); |
2367 |
Result := TSQLParam(GetInterface(index)); |
2368 |
end; |
2369 |
end; |
2370 |
|
2371 |
function TSQLParams.ByName(Idx: AnsiString): ISQLParam; |
2372 |
var aIBXSQLVAR: TSQLVarData; |
2373 |
begin |
2374 |
CheckActive; |
2375 |
aIBXSQLVAR := FSQLParams.ColumnByName(Idx); |
2376 |
if aIBXSQLVAR = nil then |
2377 |
IBError(ibxeFieldNotFound,[Idx]); |
2378 |
Result := getSQLParam(aIBXSQLVAR.index); |
2379 |
end; |
2380 |
|
2381 |
function TSQLParams.GetModified: Boolean; |
2382 |
var |
2383 |
i: Integer; |
2384 |
begin |
2385 |
CheckActive; |
2386 |
result := False; |
2387 |
with FSQLParams do |
2388 |
for i := 0 to Count - 1 do |
2389 |
if Column[i].Modified then |
2390 |
begin |
2391 |
result := True; |
2392 |
exit; |
2393 |
end; |
2394 |
end; |
2395 |
|
2396 |
function TSQLParams.GetHasCaseSensitiveParams: Boolean; |
2397 |
begin |
2398 |
Result := FSQLParams.CaseSensitiveParams; |
2399 |
end; |
2400 |
|
2401 |
{ TResults } |
2402 |
|
2403 |
procedure TResults.CheckActive; |
2404 |
begin |
2405 |
if not FResults.StateChanged(FChangeSeqNo) then Exit; |
2406 |
|
2407 |
if FPrepareSeqNo < FResults.PrepareSeqNo then |
2408 |
IBError(ibxeInterfaceOutofDate,[nil]); |
2409 |
|
2410 |
if not FResults.CheckStatementStatus(ssPrepared) then |
2411 |
IBError(ibxeStatementNotPrepared, [nil]); |
2412 |
|
2413 |
with GetTransaction as TFBTransaction do |
2414 |
if not InTransaction or (FResults.TransactionSeqNo <> FTransactionSeqNo) then |
2415 |
IBError(ibxeInterfaceOutofDate,[nil]); |
2416 |
end; |
2417 |
|
2418 |
function TResults.GetISQLData(aIBXSQLVAR: TSQLVarData): ISQLData; |
2419 |
begin |
2420 |
if (aIBXSQLVAR.Index < 0) or (aIBXSQLVAR.Index >= getCount) then |
2421 |
IBError(ibxeInvalidColumnIndex,[nil]); |
2422 |
|
2423 |
if not HasInterface(aIBXSQLVAR.Index) then |
2424 |
AddInterface(aIBXSQLVAR.Index, TIBSQLData.Create(self,aIBXSQLVAR)); |
2425 |
Result := TIBSQLData(GetInterface(aIBXSQLVAR.Index)); |
2426 |
end; |
2427 |
|
2428 |
constructor TResults.Create(aResults: TSQLDataArea); |
2429 |
begin |
2430 |
inherited Create(aResults.Count); |
2431 |
FResults := aResults; |
2432 |
FStatement := aResults.Statement; |
2433 |
FPrepareSeqNo := aResults.PrepareSeqNo; |
2434 |
FTransactionSeqNo := aResults.TransactionSeqNo; |
2435 |
FResults.StateChanged(FChangeSeqNo); |
2436 |
end; |
2437 |
|
2438 |
function TResults.getCount: integer; |
2439 |
begin |
2440 |
CheckActive; |
2441 |
Result := FResults.Count; |
2442 |
end; |
2443 |
|
2444 |
function TResults.ByName(Idx: AnsiString): ISQLData; |
2445 |
var col: TSQLVarData; |
2446 |
begin |
2447 |
Result := nil; |
2448 |
CheckActive; |
2449 |
if FResults.CheckStatementStatus(ssBOF) then |
2450 |
IBError(ibxeBOF,[nil]); |
2451 |
if FResults.CheckStatementStatus(ssEOF) then |
2452 |
IBError(ibxeEOF,[nil]); |
2453 |
|
2454 |
if FResults.Count > 0 then |
2455 |
begin |
2456 |
col := FResults.ColumnByName(Idx); |
2457 |
if col <> nil then |
2458 |
Result := GetISQLData(col); |
2459 |
end; |
2460 |
end; |
2461 |
|
2462 |
function TResults.getSQLData(index: integer): ISQLData; |
2463 |
begin |
2464 |
CheckActive; |
2465 |
if FResults.CheckStatementStatus(ssBOF) then |
2466 |
IBError(ibxeBOF,[nil]); |
2467 |
if FResults.CheckStatementStatus(ssEOF) then |
2468 |
IBError(ibxeEOF,[nil]); |
2469 |
if (index < 0) or (index >= FResults.Count) then |
2470 |
IBError(ibxeInvalidColumnIndex,[nil]); |
2471 |
|
2472 |
Result := GetISQLData(FResults.Column[index]); |
2473 |
end; |
2474 |
|
2475 |
procedure TResults.GetData(index: integer; var IsNull: boolean; var len: short; |
2476 |
var data: PByte); |
2477 |
begin |
2478 |
CheckActive; |
2479 |
FResults.GetData(index,IsNull, len,data); |
2480 |
end; |
2481 |
|
2482 |
function TResults.GetTransaction: ITransaction; |
2483 |
begin |
2484 |
Result := FStatement.GetTransaction; |
2485 |
end; |
2486 |
|
2487 |
procedure TResults.SetRetainInterfaces(aValue: boolean); |
2488 |
begin |
2489 |
RetainInterfaces := aValue; |
2490 |
end; |
2491 |
|
2492 |
end. |
2493 |
|