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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 }
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{ }
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{************************************************************************}
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unit IBSQL;
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{$Mode Delphi}
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interface
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uses
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{$IFDEF WINDOWS }
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Windows,
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{$ELSE}
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baseunix, unix,
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{$ENDIF}
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SysUtils, Classes, Forms, Controls, IBHeader,
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IBErrorCodes, IBExternals, DB, IB, IBDatabase, IBUtils, IBXConst;
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type
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TIBSQL = class;
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TIBXSQLDA = class;
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{ TIBXSQLVAR }
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TIBXSQLVAR = class(TObject)
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private
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FParent: TIBXSQLDA;
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FSQL: TIBSQL;
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FIndex: Integer;
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FModified: Boolean;
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FName: String;
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FXSQLVAR: PXSQLVAR; { Point to the PXSQLVAR in the owner object }
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function AdjustScale(Value: Int64; Scale: Integer): Double;
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function AdjustScaleToInt64(Value: Int64; Scale: Integer): Int64;
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function AdjustScaleToCurrency(Value: Int64; Scale: Integer): Currency;
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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: String;
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function GetAsVariant: Variant;
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function GetAsXSQLVAR: PXSQLVAR;
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function GetIsNull: Boolean;
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function GetIsNullable: Boolean;
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function GetSize: Integer;
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function GetSQLType: Integer;
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procedure SetAsCurrency(Value: Currency);
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procedure SetAsInt64(Value: Int64);
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procedure SetAsDate(Value: TDateTime);
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procedure SetAsTime(Value: TDateTime);
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procedure SetAsDateTime(Value: TDateTime);
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procedure SetAsDouble(Value: Double);
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procedure SetAsFloat(Value: Float);
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procedure SetAsLong(Value: Long);
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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);
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procedure SetAsString(Value: String);
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procedure SetAsVariant(Value: Variant);
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procedure SetAsXSQLVAR(Value: PXSQLVAR);
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procedure SetIsNull(Value: Boolean);
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procedure SetIsNullable(Value: Boolean);
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public
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constructor Create(Parent: TIBXSQLDA; Query: TIBSQL);
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procedure Assign(Source: TIBXSQLVAR);
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procedure Clear;
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procedure LoadFromFile(const FileName: String);
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procedure LoadFromStream(Stream: TStream);
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procedure SaveToFile(const FileName: String);
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procedure SaveToStream(Stream: TStream);
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property AsDate: TDateTime read GetAsDateTime write SetAsDate;
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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 SetAsLong;
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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: String read GetAsString write SetAsString;
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property AsVariant: Variant read GetAsVariant write SetAsVariant;
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property AsXSQLVAR: PXSQLVAR read GetAsXSQLVAR write SetAsXSQLVAR;
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property Data: PXSQLVAR read FXSQLVAR write FXSQLVAR;
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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 Index: Integer read FIndex;
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property Modified: Boolean read FModified write FModified;
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property Name: String read FName;
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property Size: Integer read GetSize;
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property SQLType: Integer read GetSQLType;
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property Value: Variant read GetAsVariant write SetAsVariant;
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end;
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TIBXSQLVARArray = Array of TIBXSQLVAR;
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{ TIBXSQLVAR }
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TIBXSQLDA = class(TObject)
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protected
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FSQL: TIBSQL;
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FCount: Integer;
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FNames: TStrings;
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FSize: Integer;
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FXSQLDA: PXSQLDA;
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FXSQLVARs: TIBXSQLVARArray; { array of IBXQLVARs }
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FUniqueRelationName: String;
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function GetModified: Boolean;
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function GetNames: String;
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function GetRecordSize: Integer;
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function GetXSQLDA: PXSQLDA;
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function GetXSQLVAR(Idx: Integer): TIBXSQLVAR;
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function GetXSQLVARByName(Idx: String): TIBXSQLVAR;
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procedure Initialize;
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procedure SetCount(Value: Integer);
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public
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constructor Create(Query: TIBSQL);
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destructor Destroy; override;
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procedure AddName(FieldName: String; Idx: Integer);
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function ByName(Idx: String): TIBXSQLVAR;
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property AsXSQLDA: PXSQLDA read GetXSQLDA;
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property Count: Integer read FCount write SetCount;
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property Modified: Boolean read GetModified;
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property Names: String read GetNames;
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property RecordSize: Integer read GetRecordSize;
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property Vars[Idx: Integer]: TIBXSQLVAR read GetXSQLVAR; default;
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property UniqueRelationName: String read FUniqueRelationName;
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end;
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{ TIBBatch }
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TIBBatch = class(TObject)
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protected
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FFilename: String;
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FColumns: TIBXSQLDA;
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FParams: TIBXSQLDA;
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public
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procedure ReadyFile; virtual; abstract;
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property Columns: TIBXSQLDA read FColumns;
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property Filename: String read FFilename write FFilename;
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property Params: TIBXSQLDA read FParams;
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end;
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TIBBatchInput = class(TIBBatch)
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public
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function ReadParameters: Boolean; virtual; abstract;
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end;
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TIBBatchOutput = class(TIBBatch)
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public
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function WriteColumns: Boolean; virtual; abstract;
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end;
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{ TIBOutputDelimitedFile }
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TIBOutputDelimitedFile = class(TIBBatchOutput)
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protected
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{$IFDEF UNIX}
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FHandle: cint;
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{$ELSE}
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FHandle: THandle;
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{$ENDIF}
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FOutputTitles: Boolean;
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FColDelimiter,
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FRowDelimiter: string;
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public
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destructor Destroy; override;
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procedure ReadyFile; override;
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function WriteColumns: Boolean; override;
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property ColDelimiter: string read FColDelimiter write FColDelimiter;
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property OutputTitles: Boolean read FOutputTitles
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write FOutputTitles;
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property RowDelimiter: string read FRowDelimiter write FRowDelimiter;
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end;
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{ TIBInputDelimitedFile }
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TIBInputDelimitedFile = class(TIBBatchInput)
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protected
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FColDelimiter,
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FRowDelimiter: string;
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FEOF: Boolean;
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FFile: TFileStream;
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FLookAhead: Char;
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FReadBlanksAsNull: Boolean;
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FSkipTitles: Boolean;
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public
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destructor Destroy; override;
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function GetColumn(var Col: string): Integer;
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function ReadParameters: Boolean; override;
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procedure ReadyFile; override;
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property ColDelimiter: string read FColDelimiter write FColDelimiter;
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property ReadBlanksAsNull: Boolean read FReadBlanksAsNull
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write FReadBlanksAsNull;
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property RowDelimiter: string read FRowDelimiter write FRowDelimiter;
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property SkipTitles: Boolean read FSkipTitles write FSkipTitles;
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end;
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{ TIBOutputRawFile }
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TIBOutputRawFile = class(TIBBatchOutput)
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protected
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{$IFDEF UNIX}
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FHandle: cint;
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{$ELSE}
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FHandle: THandle;
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{$ENDIF}
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public
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destructor Destroy; override;
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procedure ReadyFile; override;
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function WriteColumns: Boolean; override;
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end;
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{ TIBInputRawFile }
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TIBInputRawFile = class(TIBBatchInput)
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protected
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{$IFDEF UNIX}
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FHandle: cint;
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{$ELSE}
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FHandle: THandle;
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{$ENDIF}
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public
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destructor Destroy; override;
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function ReadParameters: Boolean; override;
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procedure ReadyFile; override;
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end;
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{ TIBSQL }
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TIBSQLTypes = (SQLUnknown, SQLSelect, SQLInsert,
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SQLUpdate, SQLDelete, SQLDDL,
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SQLGetSegment, SQLPutSegment,
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SQLExecProcedure, SQLStartTransaction,
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SQLCommit, SQLRollback,
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SQLSelectForUpdate, SQLSetGenerator);
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TIBSQL = class(TComponent)
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private
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FIBLoaded: Boolean;
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function GetFieldCount: integer;
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protected
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FBase: TIBBase;
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FBOF, { At BOF? }
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FEOF, { At EOF? }
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FGoToFirstRecordOnExecute, { Automatically position record on first record after executing }
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FOpen, { Is a cursor open? }
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FPrepared: Boolean; { Has the query been prepared? }
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FRecordCount: Integer; { How many records have been read so far? }
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FCursor: String; { Cursor name...}
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FHandle: TISC_STMT_HANDLE; { Once prepared, this accesses the SQL Query }
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FOnSQLChanging: TNotifyEvent; { Call this when the SQL is changing }
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FSQL: TStrings; { SQL Query (by user) }
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FParamCheck: Boolean; { Check for parameters? (just like TQuery) }
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FProcessedSQL: TStrings; { SQL Query (pre-processed for param labels) }
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FSQLParams, { Any parameters to the query }
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FSQLRecord: TIBXSQLDA; { The current record }
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FSQLType: TIBSQLTypes; { Select, update, delete, insert, create, alter, etc...}
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FGenerateParamNames: Boolean; { Auto generate param names ?}
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procedure DoBeforeDatabaseDisconnect(Sender: TObject);
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function GetDatabase: TIBDatabase;
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function GetDBHandle: PISC_DB_HANDLE;
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function GetEOF: Boolean;
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function GetFields(const Idx: Integer): TIBXSQLVAR;
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function GetFieldIndex(FieldName: String): Integer;
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function GetPlan: String;
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function GetRecordCount: Integer;
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function GetRowsAffected: Integer;
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function GetSQLParams: TIBXSQLDA;
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function GetTransaction: TIBTransaction;
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function GetTRHandle: PISC_TR_HANDLE;
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procedure PreprocessSQL;
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procedure SetDatabase(Value: TIBDatabase);
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procedure SetSQL(Value: TStrings);
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procedure SetTransaction(Value: TIBTransaction);
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procedure SQLChanging(Sender: TObject);
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procedure BeforeTransactionEnd(Sender: TObject);
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public
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constructor Create(AOwner: TComponent); override;
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destructor Destroy; override;
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procedure BatchInput(InputObject: TIBBatchInput);
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procedure BatchOutput(OutputObject: TIBBatchOutput);
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function Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
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procedure CheckClosed; { raise error if query is not closed. }
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procedure CheckOpen; { raise error if query is not open.}
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procedure CheckValidStatement; { raise error if statement is invalid.}
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procedure Close;
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function Current: TIBXSQLDA;
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procedure ExecQuery;
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function FieldByName(FieldName: String): TIBXSQLVAR;
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function ParamByName(ParamName: String): TIBXSQLVAR;
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324 |
procedure FreeHandle;
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function Next: TIBXSQLDA;
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326 |
procedure Prepare;
|
327 |
function GetUniqueRelationName: String;
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property Bof: Boolean read FBOF;
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property DBHandle: PISC_DB_HANDLE read GetDBHandle;
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property Eof: Boolean read GetEOF;
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property Fields[const Idx: Integer]: TIBXSQLVAR read GetFields;
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property FieldIndex[FieldName: String]: Integer read GetFieldIndex;
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property FieldCount: integer read GetFieldCount;
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property Open: Boolean read FOpen;
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property Params: TIBXSQLDA read GetSQLParams;
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property Plan: String read GetPlan;
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property Prepared: Boolean read FPrepared;
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property RecordCount: Integer read GetRecordCount;
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property RowsAffected: Integer read GetRowsAffected;
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property SQLType: TIBSQLTypes read FSQLType;
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property TRHandle: PISC_TR_HANDLE read GetTRHandle;
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property Handle: TISC_STMT_HANDLE read FHandle;
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property GenerateParamNames: Boolean read FGenerateParamNames write FGenerateParamNames;
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property UniqueRelationName: String read GetUniqueRelationName;
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345 |
published
|
346 |
property Database: TIBDatabase read GetDatabase write SetDatabase;
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property GoToFirstRecordOnExecute: Boolean read FGoToFirstRecordOnExecute
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write FGoToFirstRecordOnExecute
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default True;
|
350 |
property ParamCheck: Boolean read FParamCheck write FParamCheck;
|
351 |
property SQL: TStrings read FSQL write SetSQL;
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352 |
property Transaction: TIBTransaction read GetTransaction write SetTransaction;
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property OnSQLChanging: TNotifyEvent read FOnSQLChanging write FOnSQLChanging;
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354 |
end;
|
355 |
|
356 |
implementation
|
357 |
|
358 |
uses
|
359 |
IBIntf, IBBlob, Variants , IBSQLMonitor;
|
360 |
|
361 |
{ TIBXSQLVAR }
|
362 |
constructor TIBXSQLVAR.Create(Parent: TIBXSQLDA; Query: TIBSQL);
|
363 |
begin
|
364 |
inherited Create;
|
365 |
FParent := Parent;
|
366 |
FSQL := Query;
|
367 |
end;
|
368 |
|
369 |
procedure TIBXSQLVAR.Assign(Source: TIBXSQLVAR);
|
370 |
var
|
371 |
szBuff: PChar;
|
372 |
s_bhandle, d_bhandle: TISC_BLOB_HANDLE;
|
373 |
bSourceBlob, bDestBlob: Boolean;
|
374 |
iSegs: Int64;
|
375 |
iMaxSeg: Int64;
|
376 |
iSize: Int64;
|
377 |
iBlobType: Short;
|
378 |
begin
|
379 |
szBuff := nil;
|
380 |
bSourceBlob := True;
|
381 |
bDestBlob := True;
|
382 |
s_bhandle := nil;
|
383 |
d_bhandle := nil;
|
384 |
try
|
385 |
if (Source.IsNull) then
|
386 |
begin
|
387 |
IsNull := True;
|
388 |
exit;
|
389 |
end
|
390 |
else
|
391 |
if (FXSQLVAR^.sqltype and (not 1) = SQL_ARRAY) or
|
392 |
(Source.FXSQLVAR^.sqltype and (not 1) = SQL_ARRAY) then
|
393 |
exit; { arrays not supported }
|
394 |
if (FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) and
|
395 |
(Source.FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
|
396 |
begin
|
397 |
AsXSQLVAR := Source.AsXSQLVAR;
|
398 |
exit;
|
399 |
end
|
400 |
else
|
401 |
if (Source.FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
|
402 |
begin
|
403 |
szBuff := nil;
|
404 |
IBAlloc(szBuff, 0, Source.FXSQLVAR^.sqllen);
|
405 |
Move(Source.FXSQLVAR^.sqldata[0], szBuff[0], Source.FXSQLVAR^.sqllen);
|
406 |
bSourceBlob := False;
|
407 |
iSize := Source.FXSQLVAR^.sqllen;
|
408 |
end
|
409 |
else
|
410 |
if (FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) then
|
411 |
bDestBlob := False;
|
412 |
|
413 |
if bSourceBlob then
|
414 |
begin
|
415 |
{ read the blob }
|
416 |
Source.FSQL.Call(isc_open_blob2(StatusVector, Source.FSQL.DBHandle,
|
417 |
Source.FSQL.TRHandle, @s_bhandle, PISC_QUAD(Source.FXSQLVAR.sqldata),
|
418 |
0, nil), True);
|
419 |
try
|
420 |
IBBlob.GetBlobInfo(@s_bhandle, iSegs, iMaxSeg, iSize,
|
421 |
iBlobType);
|
422 |
szBuff := nil;
|
423 |
IBAlloc(szBuff, 0, iSize);
|
424 |
IBBlob.ReadBlob(@s_bhandle, szBuff, iSize);
|
425 |
finally
|
426 |
Source.FSQL.Call(isc_close_blob(StatusVector, @s_bhandle), True);
|
427 |
end;
|
428 |
end;
|
429 |
|
430 |
if bDestBlob then
|
431 |
begin
|
432 |
{ write the blob }
|
433 |
FSQL.Call(isc_create_blob2(StatusVector, FSQL.DBHandle,
|
434 |
FSQL.TRHandle, @d_bhandle, PISC_QUAD(FXSQLVAR.sqldata),
|
435 |
0, nil), True);
|
436 |
try
|
437 |
IBBlob.WriteBlob(@d_bhandle, szBuff, iSize);
|
438 |
isNull := false
|
439 |
finally
|
440 |
FSQL.Call(isc_close_blob(StatusVector, @d_bhandle), True);
|
441 |
end;
|
442 |
end
|
443 |
else
|
444 |
begin
|
445 |
{ just copy the buffer }
|
446 |
FXSQLVAR.sqltype := SQL_TEXT;
|
447 |
FXSQLVAR.sqllen := iSize;
|
448 |
IBAlloc(FXSQLVAR.sqldata, iSize, iSize);
|
449 |
Move(szBuff[0], FXSQLVAR^.sqldata[0], iSize);
|
450 |
end;
|
451 |
finally
|
452 |
FreeMem(szBuff);
|
453 |
end;
|
454 |
end;
|
455 |
|
456 |
function TIBXSQLVAR.AdjustScale(Value: Int64; Scale: Integer): Double;
|
457 |
var
|
458 |
Scaling : Int64;
|
459 |
i: Integer;
|
460 |
Val: Double;
|
461 |
begin
|
462 |
Scaling := 1; Val := Value;
|
463 |
if Scale > 0 then
|
464 |
begin
|
465 |
for i := 1 to Scale do
|
466 |
Scaling := Scaling * 10;
|
467 |
result := Val * Scaling;
|
468 |
end
|
469 |
else
|
470 |
if Scale < 0 then
|
471 |
begin
|
472 |
for i := -1 downto Scale do
|
473 |
Scaling := Scaling * 10;
|
474 |
result := Val / Scaling;
|
475 |
end
|
476 |
else
|
477 |
result := Val;
|
478 |
end;
|
479 |
|
480 |
function TIBXSQLVAR.AdjustScaleToInt64(Value: Int64; Scale: Integer): Int64;
|
481 |
var
|
482 |
Scaling : Int64;
|
483 |
i: Integer;
|
484 |
Val: Int64;
|
485 |
begin
|
486 |
Scaling := 1; Val := Value;
|
487 |
if Scale > 0 then begin
|
488 |
for i := 1 to Scale do Scaling := Scaling * 10;
|
489 |
result := Val * Scaling;
|
490 |
end else if Scale < 0 then begin
|
491 |
for i := -1 downto Scale do Scaling := Scaling * 10;
|
492 |
result := Val div Scaling;
|
493 |
end else
|
494 |
result := Val;
|
495 |
end;
|
496 |
|
497 |
function TIBXSQLVAR.AdjustScaleToCurrency(Value: Int64; Scale: Integer): Currency;
|
498 |
var
|
499 |
Scaling : Int64;
|
500 |
i : Integer;
|
501 |
FractionText, PadText, CurrText: string;
|
502 |
begin
|
503 |
Result := 0;
|
504 |
Scaling := 1;
|
505 |
if Scale > 0 then
|
506 |
begin
|
507 |
for i := 1 to Scale do
|
508 |
Scaling := Scaling * 10;
|
509 |
result := Value * Scaling;
|
510 |
end
|
511 |
else
|
512 |
if Scale < 0 then
|
513 |
begin
|
514 |
for i := -1 downto Scale do
|
515 |
Scaling := Scaling * 10;
|
516 |
FractionText := IntToStr(abs(Value mod Scaling));
|
517 |
for i := Length(FractionText) to -Scale -1 do
|
518 |
PadText := '0' + PadText;
|
519 |
if Value < 0 then
|
520 |
CurrText := '-' + IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText
|
521 |
else
|
522 |
CurrText := IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText;
|
523 |
try
|
524 |
result := StrToCurr(CurrText);
|
525 |
except
|
526 |
on E: Exception do
|
527 |
IBError(ibxeInvalidDataConversion, [nil]);
|
528 |
end;
|
529 |
end
|
530 |
else
|
531 |
result := Value;
|
532 |
end;
|
533 |
|
534 |
function TIBXSQLVAR.GetAsCurrency: Currency;
|
535 |
begin
|
536 |
result := 0;
|
537 |
if FSQL.Database.SQLDialect < 3 then
|
538 |
result := GetAsDouble
|
539 |
else begin
|
540 |
if not IsNull then
|
541 |
case FXSQLVAR^.sqltype and (not 1) of
|
542 |
SQL_TEXT, SQL_VARYING: begin
|
543 |
try
|
544 |
result := StrtoCurr(AsString);
|
545 |
except
|
546 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
|
547 |
end;
|
548 |
end;
|
549 |
SQL_SHORT:
|
550 |
result := AdjustScaleToCurrency(Int64(PShort(FXSQLVAR^.sqldata)^),
|
551 |
FXSQLVAR^.sqlscale);
|
552 |
SQL_LONG:
|
553 |
result := AdjustScaleToCurrency(Int64(PLong(FXSQLVAR^.sqldata)^),
|
554 |
FXSQLVAR^.sqlscale);
|
555 |
SQL_INT64:
|
556 |
result := AdjustScaleToCurrency(PInt64(FXSQLVAR^.sqldata)^,
|
557 |
FXSQLVAR^.sqlscale);
|
558 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
|
559 |
result := Trunc(AsDouble);
|
560 |
else
|
561 |
IBError(ibxeInvalidDataConversion, [nil]);
|
562 |
end;
|
563 |
end;
|
564 |
end;
|
565 |
|
566 |
function TIBXSQLVAR.GetAsInt64: Int64;
|
567 |
begin
|
568 |
result := 0;
|
569 |
if not IsNull then
|
570 |
case FXSQLVAR^.sqltype and (not 1) of
|
571 |
SQL_TEXT, SQL_VARYING: begin
|
572 |
try
|
573 |
result := StrToInt64(AsString);
|
574 |
except
|
575 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
|
576 |
end;
|
577 |
end;
|
578 |
SQL_SHORT:
|
579 |
result := AdjustScaleToInt64(Int64(PShort(FXSQLVAR^.sqldata)^),
|
580 |
FXSQLVAR^.sqlscale);
|
581 |
SQL_LONG:
|
582 |
result := AdjustScaleToInt64(Int64(PLong(FXSQLVAR^.sqldata)^),
|
583 |
FXSQLVAR^.sqlscale);
|
584 |
SQL_INT64:
|
585 |
result := AdjustScaleToInt64(PInt64(FXSQLVAR^.sqldata)^,
|
586 |
FXSQLVAR^.sqlscale);
|
587 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
|
588 |
result := Trunc(AsDouble);
|
589 |
else
|
590 |
IBError(ibxeInvalidDataConversion, [nil]);
|
591 |
end;
|
592 |
end;
|
593 |
|
594 |
function TIBXSQLVAR.GetAsDateTime: TDateTime;
|
595 |
var
|
596 |
tm_date: TCTimeStructure;
|
597 |
msecs: word;
|
598 |
begin
|
599 |
result := 0;
|
600 |
if not IsNull then
|
601 |
case FXSQLVAR^.sqltype and (not 1) of
|
602 |
SQL_TEXT, SQL_VARYING: begin
|
603 |
try
|
604 |
result := StrToDate(AsString);
|
605 |
except
|
606 |
on E: EConvertError do IBError(ibxeInvalidDataConversion, [nil]);
|
607 |
end;
|
608 |
end;
|
609 |
SQL_TYPE_DATE: begin
|
610 |
isc_decode_sql_date(PISC_DATE(FXSQLVAR^.sqldata), @tm_date);
|
611 |
try
|
612 |
result := EncodeDate(Word(tm_date.tm_year + 1900), Word(tm_date.tm_mon + 1),
|
613 |
Word(tm_date.tm_mday));
|
614 |
except
|
615 |
on E: EConvertError do begin
|
616 |
IBError(ibxeInvalidDataConversion, [nil]);
|
617 |
end;
|
618 |
end;
|
619 |
end;
|
620 |
SQL_TYPE_TIME: begin
|
621 |
isc_decode_sql_time(PISC_TIME(FXSQLVAR^.sqldata), @tm_date);
|
622 |
try
|
623 |
msecs := (PISC_TIME(FXSQLVAR^.sqldata)^ mod 10000) div 10;
|
624 |
result := EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
|
625 |
Word(tm_date.tm_sec), msecs)
|
626 |
except
|
627 |
on E: EConvertError do begin
|
628 |
IBError(ibxeInvalidDataConversion, [nil]);
|
629 |
end;
|
630 |
end;
|
631 |
end;
|
632 |
SQL_TIMESTAMP: begin
|
633 |
isc_decode_date(PISC_QUAD(FXSQLVAR^.sqldata), @tm_date);
|
634 |
try
|
635 |
result := EncodeDate(Word(tm_date.tm_year + 1900), Word(tm_date.tm_mon + 1),
|
636 |
Word(tm_date.tm_mday));
|
637 |
msecs := (PISC_TIMESTAMP(FXSQLVAR^.sqldata)^.timestamp_time mod 10000) div 10;
|
638 |
if result >= 0 then
|
639 |
result := result + EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
|
640 |
Word(tm_date.tm_sec), msecs)
|
641 |
else
|
642 |
result := result - EncodeTime(Word(tm_date.tm_hour), Word(tm_date.tm_min),
|
643 |
Word(tm_date.tm_sec), msecs)
|
644 |
except
|
645 |
on E: EConvertError do begin
|
646 |
IBError(ibxeInvalidDataConversion, [nil]);
|
647 |
end;
|
648 |
end;
|
649 |
end;
|
650 |
else
|
651 |
IBError(ibxeInvalidDataConversion, [nil]);
|
652 |
end;
|
653 |
end;
|
654 |
|
655 |
function TIBXSQLVAR.GetAsDouble: Double;
|
656 |
begin
|
657 |
result := 0;
|
658 |
if not IsNull then begin
|
659 |
case FXSQLVAR^.sqltype and (not 1) of
|
660 |
SQL_TEXT, SQL_VARYING: begin
|
661 |
try
|
662 |
result := StrToFloat(AsString);
|
663 |
except
|
664 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
|
665 |
end;
|
666 |
end;
|
667 |
SQL_SHORT:
|
668 |
result := AdjustScale(Int64(PShort(FXSQLVAR^.sqldata)^),
|
669 |
FXSQLVAR^.sqlscale);
|
670 |
SQL_LONG:
|
671 |
result := AdjustScale(Int64(PLong(FXSQLVAR^.sqldata)^),
|
672 |
FXSQLVAR^.sqlscale);
|
673 |
SQL_INT64:
|
674 |
result := AdjustScale(PInt64(FXSQLVAR^.sqldata)^, FXSQLVAR^.sqlscale);
|
675 |
SQL_FLOAT:
|
676 |
result := PFloat(FXSQLVAR^.sqldata)^;
|
677 |
SQL_DOUBLE, SQL_D_FLOAT:
|
678 |
result := PDouble(FXSQLVAR^.sqldata)^;
|
679 |
else
|
680 |
IBError(ibxeInvalidDataConversion, [nil]);
|
681 |
end;
|
682 |
if FXSQLVAR^.sqlscale <> 0 then
|
683 |
result :=
|
684 |
StrToFloat(FloatToStrF(result, fffixed, 15,
|
685 |
Abs(FXSQLVAR^.sqlscale) ));
|
686 |
end;
|
687 |
end;
|
688 |
|
689 |
function TIBXSQLVAR.GetAsFloat: Float;
|
690 |
begin
|
691 |
result := 0;
|
692 |
try
|
693 |
result := AsDouble;
|
694 |
except
|
695 |
on E: EOverflow do
|
696 |
IBError(ibxeInvalidDataConversion, [nil]);
|
697 |
end;
|
698 |
end;
|
699 |
|
700 |
function TIBXSQLVAR.GetAsLong: Long;
|
701 |
begin
|
702 |
result := 0;
|
703 |
if not IsNull then
|
704 |
case FXSQLVAR^.sqltype and (not 1) of
|
705 |
SQL_TEXT, SQL_VARYING: begin
|
706 |
try
|
707 |
result := StrToInt(AsString);
|
708 |
except
|
709 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
|
710 |
end;
|
711 |
end;
|
712 |
SQL_SHORT:
|
713 |
result := Trunc(AdjustScale(Int64(PShort(FXSQLVAR^.sqldata)^),
|
714 |
FXSQLVAR^.sqlscale));
|
715 |
SQL_LONG:
|
716 |
result := Trunc(AdjustScale(Int64(PLong(FXSQLVAR^.sqldata)^),
|
717 |
FXSQLVAR^.sqlscale));
|
718 |
SQL_INT64:
|
719 |
result := Trunc(AdjustScale(PInt64(FXSQLVAR^.sqldata)^, FXSQLVAR^.sqlscale));
|
720 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
|
721 |
result := Trunc(AsDouble);
|
722 |
else
|
723 |
IBError(ibxeInvalidDataConversion, [nil]);
|
724 |
end;
|
725 |
end;
|
726 |
|
727 |
function TIBXSQLVAR.GetAsPointer: Pointer;
|
728 |
begin
|
729 |
if not IsNull then
|
730 |
result := FXSQLVAR^.sqldata
|
731 |
else
|
732 |
result := nil;
|
733 |
end;
|
734 |
|
735 |
function TIBXSQLVAR.GetAsQuad: TISC_QUAD;
|
736 |
begin
|
737 |
result.gds_quad_high := 0;
|
738 |
result.gds_quad_low := 0;
|
739 |
if not IsNull then
|
740 |
case FXSQLVAR^.sqltype and (not 1) of
|
741 |
SQL_BLOB, SQL_ARRAY, SQL_QUAD:
|
742 |
result := PISC_QUAD(FXSQLVAR^.sqldata)^;
|
743 |
else
|
744 |
IBError(ibxeInvalidDataConversion, [nil]);
|
745 |
end;
|
746 |
end;
|
747 |
|
748 |
function TIBXSQLVAR.GetAsShort: Short;
|
749 |
begin
|
750 |
result := 0;
|
751 |
try
|
752 |
result := AsLong;
|
753 |
except
|
754 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
|
755 |
end;
|
756 |
end;
|
757 |
|
758 |
|
759 |
function TIBXSQLVAR.GetAsString: String;
|
760 |
var
|
761 |
sz: PChar;
|
762 |
str_len: Integer;
|
763 |
ss: TStringStream;
|
764 |
begin
|
765 |
result := '';
|
766 |
{ Check null, if so return a default string }
|
767 |
if not IsNull then
|
768 |
case FXSQLVar^.sqltype and (not 1) of
|
769 |
SQL_ARRAY:
|
770 |
result := '(Array)'; {do not localize}
|
771 |
SQL_BLOB: begin
|
772 |
ss := TStringStream.Create('');
|
773 |
try
|
774 |
SaveToStream(ss);
|
775 |
result := ss.DataString;
|
776 |
finally
|
777 |
ss.Free;
|
778 |
end;
|
779 |
end;
|
780 |
SQL_TEXT, SQL_VARYING: begin
|
781 |
sz := FXSQLVAR^.sqldata;
|
782 |
if (FXSQLVar^.sqltype and (not 1) = SQL_TEXT) then
|
783 |
str_len := FXSQLVar^.sqllen
|
784 |
else begin
|
785 |
str_len := isc_vax_integer(FXSQLVar^.sqldata, 2);
|
786 |
Inc(sz, 2);
|
787 |
end;
|
788 |
SetString(result, sz, str_len);
|
789 |
if ((FXSQLVar^.sqltype and (not 1)) = SQL_TEXT) then
|
790 |
result := TrimRight(result);
|
791 |
end;
|
792 |
SQL_TYPE_DATE:
|
793 |
case FSQL.Database.SQLDialect of
|
794 |
1 : result := DateTimeToStr(AsDateTime);
|
795 |
3 : result := DateToStr(AsDateTime);
|
796 |
end;
|
797 |
SQL_TYPE_TIME :
|
798 |
result := TimeToStr(AsDateTime);
|
799 |
SQL_TIMESTAMP:
|
800 |
result := DateTimeToStr(AsDateTime);
|
801 |
SQL_SHORT, SQL_LONG:
|
802 |
if FXSQLVAR^.sqlscale = 0 then
|
803 |
result := IntToStr(AsLong)
|
804 |
else if FXSQLVAR^.sqlscale >= (-4) then
|
805 |
result := CurrToStr(AsCurrency)
|
806 |
else
|
807 |
result := FloatToStr(AsDouble);
|
808 |
SQL_INT64:
|
809 |
if FXSQLVAR^.sqlscale = 0 then
|
810 |
result := IntToStr(AsInt64)
|
811 |
else if FXSQLVAR^.sqlscale >= (-4) then
|
812 |
result := CurrToStr(AsCurrency)
|
813 |
else
|
814 |
result := FloatToStr(AsDouble);
|
815 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
|
816 |
result := FloatToStr(AsDouble);
|
817 |
else
|
818 |
IBError(ibxeInvalidDataConversion, [nil]);
|
819 |
end;
|
820 |
end;
|
821 |
|
822 |
function TIBXSQLVAR.GetAsVariant: Variant;
|
823 |
begin
|
824 |
if IsNull then
|
825 |
result := NULL
|
826 |
{ Check null, if so return a default string }
|
827 |
else case FXSQLVar^.sqltype and (not 1) of
|
828 |
SQL_ARRAY:
|
829 |
result := '(Array)'; {do not localize}
|
830 |
SQL_BLOB:
|
831 |
result := '(Blob)'; {do not localize}
|
832 |
SQL_TEXT, SQL_VARYING:
|
833 |
result := AsString;
|
834 |
SQL_TIMESTAMP, SQL_TYPE_DATE, SQL_TYPE_TIME:
|
835 |
result := AsDateTime;
|
836 |
SQL_SHORT, SQL_LONG:
|
837 |
if FXSQLVAR^.sqlscale = 0 then
|
838 |
result := AsLong
|
839 |
else if FXSQLVAR^.sqlscale >= (-4) then
|
840 |
result := AsCurrency
|
841 |
else
|
842 |
result := AsDouble;
|
843 |
SQL_INT64:
|
844 |
if FXSQLVAR^.sqlscale = 0 then
|
845 |
IBError(ibxeInvalidDataConversion, [nil])
|
846 |
else if FXSQLVAR^.sqlscale >= (-4) then
|
847 |
result := AsCurrency
|
848 |
else
|
849 |
result := AsDouble;
|
850 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
|
851 |
result := AsDouble;
|
852 |
else
|
853 |
IBError(ibxeInvalidDataConversion, [nil]);
|
854 |
end;
|
855 |
end;
|
856 |
|
857 |
function TIBXSQLVAR.GetAsXSQLVAR: PXSQLVAR;
|
858 |
begin
|
859 |
result := FXSQLVAR;
|
860 |
end;
|
861 |
|
862 |
function TIBXSQLVAR.GetIsNull: Boolean;
|
863 |
begin
|
864 |
result := IsNullable and (FXSQLVAR^.sqlind^ = -1);
|
865 |
end;
|
866 |
|
867 |
function TIBXSQLVAR.GetIsNullable: Boolean;
|
868 |
begin
|
869 |
result := (FXSQLVAR^.sqltype and 1 = 1);
|
870 |
end;
|
871 |
|
872 |
procedure TIBXSQLVAR.LoadFromFile(const FileName: String);
|
873 |
var
|
874 |
fs: TFileStream;
|
875 |
begin
|
876 |
fs := TFileStream.Create(FileName, fmOpenRead or fmShareDenyWrite);
|
877 |
try
|
878 |
LoadFromStream(fs);
|
879 |
finally
|
880 |
fs.Free;
|
881 |
end;
|
882 |
end;
|
883 |
|
884 |
procedure TIBXSQLVAR.LoadFromStream(Stream: TStream);
|
885 |
var
|
886 |
bs: TIBBlobStream;
|
887 |
begin
|
888 |
bs := TIBBlobStream.Create;
|
889 |
try
|
890 |
bs.Mode := bmWrite;
|
891 |
bs.Database := FSQL.Database;
|
892 |
bs.Transaction := FSQL.Transaction;
|
893 |
Stream.Seek(0, soFromBeginning);
|
894 |
bs.LoadFromStream(Stream);
|
895 |
bs.Finalize;
|
896 |
AsQuad := bs.BlobID;
|
897 |
finally
|
898 |
bs.Free;
|
899 |
end;
|
900 |
end;
|
901 |
|
902 |
procedure TIBXSQLVAR.SaveToFile(const FileName: String);
|
903 |
var
|
904 |
fs: TFileStream;
|
905 |
begin
|
906 |
fs := TFileStream.Create(FileName, fmCreate or fmShareExclusive);
|
907 |
try
|
908 |
SaveToStream(fs);
|
909 |
finally
|
910 |
fs.Free;
|
911 |
end;
|
912 |
end;
|
913 |
|
914 |
procedure TIBXSQLVAR.SaveToStream(Stream: TStream);
|
915 |
var
|
916 |
bs: TIBBlobStream;
|
917 |
begin
|
918 |
bs := TIBBlobStream.Create;
|
919 |
try
|
920 |
bs.Mode := bmRead;
|
921 |
bs.Database := FSQL.Database;
|
922 |
bs.Transaction := FSQL.Transaction;
|
923 |
bs.BlobID := AsQuad;
|
924 |
bs.SaveToStream(Stream);
|
925 |
finally
|
926 |
bs.Free;
|
927 |
end;
|
928 |
end;
|
929 |
|
930 |
function TIBXSQLVAR.GetSize: Integer;
|
931 |
begin
|
932 |
result := FXSQLVAR^.sqllen;
|
933 |
end;
|
934 |
|
935 |
function TIBXSQLVAR.GetSQLType: Integer;
|
936 |
begin
|
937 |
result := FXSQLVAR^.sqltype and (not 1);
|
938 |
end;
|
939 |
|
940 |
procedure TIBXSQLVAR.SetAsCurrency(Value: Currency);
|
941 |
var
|
942 |
xvar: TIBXSQLVAR;
|
943 |
i: Integer;
|
944 |
begin
|
945 |
if FSQL.Database.SQLDialect < 3 then
|
946 |
AsDouble := Value
|
947 |
else
|
948 |
begin
|
949 |
if IsNullable then
|
950 |
IsNull := False;
|
951 |
for i := 0 to FParent.FCount - 1 do
|
952 |
if FParent.FNames[i] = FName then
|
953 |
begin
|
954 |
xvar := FParent[i];
|
955 |
xvar.FXSQLVAR^.sqltype := SQL_INT64 or (xvar.FXSQLVAR^.sqltype and 1);
|
956 |
xvar.FXSQLVAR^.sqlscale := -4;
|
957 |
xvar.FXSQLVAR^.sqllen := SizeOf(Int64);
|
958 |
IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
|
959 |
PCurrency(xvar.FXSQLVAR^.sqldata)^ := Value;
|
960 |
xvar.FModified := True;
|
961 |
end;
|
962 |
end;
|
963 |
end;
|
964 |
|
965 |
procedure TIBXSQLVAR.SetAsInt64(Value: Int64);
|
966 |
var
|
967 |
i: Integer;
|
968 |
xvar: TIBXSQLVAR;
|
969 |
begin
|
970 |
if IsNullable then
|
971 |
IsNull := False;
|
972 |
for i := 0 to FParent.FCount - 1 do
|
973 |
if FParent.FNames[i] = FName then
|
974 |
begin
|
975 |
xvar := FParent[i];
|
976 |
xvar.FXSQLVAR^.sqltype := SQL_INT64 or (xvar.FXSQLVAR^.sqltype and 1);
|
977 |
xvar.FXSQLVAR^.sqlscale := 0;
|
978 |
xvar.FXSQLVAR^.sqllen := SizeOf(Int64);
|
979 |
IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
|
980 |
PInt64(xvar.FXSQLVAR^.sqldata)^ := Value;
|
981 |
xvar.FModified := True;
|
982 |
end;
|
983 |
end;
|
984 |
|
985 |
procedure TIBXSQLVAR.SetAsDate(Value: TDateTime);
|
986 |
var
|
987 |
i: Integer;
|
988 |
tm_date: TCTimeStructure;
|
989 |
Yr, Mn, Dy: Word;
|
990 |
xvar: TIBXSQLVAR;
|
991 |
begin
|
992 |
if FSQL.Database.SQLDialect < 3 then
|
993 |
begin
|
994 |
AsDateTime := Value;
|
995 |
exit;
|
996 |
end;
|
997 |
if IsNullable then
|
998 |
IsNull := False;
|
999 |
for i := 0 to FParent.FCount - 1 do
|
1000 |
if FParent.FNames[i] = FName then
|
1001 |
begin
|
1002 |
xvar := FParent[i];
|
1003 |
xvar.FXSQLVAR^.sqltype := SQL_TYPE_DATE or (xvar.FXSQLVAR^.sqltype and 1);
|
1004 |
DecodeDate(Value, Yr, Mn, Dy);
|
1005 |
with tm_date do begin
|
1006 |
tm_sec := 0;
|
1007 |
tm_min := 0;
|
1008 |
tm_hour := 0;
|
1009 |
tm_mday := Dy;
|
1010 |
tm_mon := Mn - 1;
|
1011 |
tm_year := Yr - 1900;
|
1012 |
end;
|
1013 |
xvar.FXSQLVAR^.sqllen := SizeOf(ISC_DATE);
|
1014 |
IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
|
1015 |
isc_encode_sql_date(@tm_date, PISC_DATE(xvar.FXSQLVAR^.sqldata));
|
1016 |
xvar.FModified := True;
|
1017 |
end;
|
1018 |
end;
|
1019 |
|
1020 |
procedure TIBXSQLVAR.SetAsTime(Value: TDateTime);
|
1021 |
var
|
1022 |
i: Integer;
|
1023 |
tm_date: TCTimeStructure;
|
1024 |
Hr, Mt, S, Ms: Word;
|
1025 |
xvar: TIBXSQLVAR;
|
1026 |
begin
|
1027 |
if FSQL.Database.SQLDialect < 3 then
|
1028 |
begin
|
1029 |
AsDateTime := Value;
|
1030 |
exit;
|
1031 |
end;
|
1032 |
if IsNullable then
|
1033 |
IsNull := False;
|
1034 |
for i := 0 to FParent.FCount - 1 do
|
1035 |
if FParent.FNames[i] = FName then
|
1036 |
begin
|
1037 |
xvar := FParent[i];
|
1038 |
xvar.FXSQLVAR^.sqltype := SQL_TYPE_TIME or (xvar.FXSQLVAR^.sqltype and 1);
|
1039 |
DecodeTime(Value, Hr, Mt, S, Ms);
|
1040 |
with tm_date do begin
|
1041 |
tm_sec := S;
|
1042 |
tm_min := Mt;
|
1043 |
tm_hour := Hr;
|
1044 |
tm_mday := 0;
|
1045 |
tm_mon := 0;
|
1046 |
tm_year := 0;
|
1047 |
end;
|
1048 |
xvar.FXSQLVAR^.sqllen := SizeOf(ISC_TIME);
|
1049 |
IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
|
1050 |
isc_encode_sql_time(@tm_date, PISC_TIME(xvar.FXSQLVAR^.sqldata));
|
1051 |
if Ms > 0 then
|
1052 |
Inc(PISC_TIME(xvar.FXSQLVAR^.sqldata)^,Ms*10);
|
1053 |
xvar.FModified := True;
|
1054 |
end;
|
1055 |
end;
|
1056 |
|
1057 |
procedure TIBXSQLVAR.SetAsDateTime(Value: TDateTime);
|
1058 |
var
|
1059 |
i: Integer;
|
1060 |
tm_date: TCTimeStructure;
|
1061 |
Yr, Mn, Dy, Hr, Mt, S, Ms: Word;
|
1062 |
xvar: TIBXSQLVAR;
|
1063 |
begin
|
1064 |
if IsNullable then
|
1065 |
IsNull := False;
|
1066 |
for i := 0 to FParent.FCount - 1 do
|
1067 |
if FParent.FNames[i] = FName then
|
1068 |
begin
|
1069 |
xvar := FParent[i];
|
1070 |
xvar.FXSQLVAR^.sqltype := SQL_TIMESTAMP or (xvar.FXSQLVAR^.sqltype and 1);
|
1071 |
DecodeDate(Value, Yr, Mn, Dy);
|
1072 |
DecodeTime(Value, Hr, Mt, S, Ms);
|
1073 |
with tm_date do begin
|
1074 |
tm_sec := S;
|
1075 |
tm_min := Mt;
|
1076 |
tm_hour := Hr;
|
1077 |
tm_mday := Dy;
|
1078 |
tm_mon := Mn - 1;
|
1079 |
tm_year := Yr - 1900;
|
1080 |
end;
|
1081 |
xvar.FXSQLVAR^.sqllen := SizeOf(TISC_QUAD);
|
1082 |
IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
|
1083 |
isc_encode_date(@tm_date, PISC_QUAD(xvar.FXSQLVAR^.sqldata));
|
1084 |
if Ms > 0 then
|
1085 |
Inc(PISC_TIMESTAMP(xvar.FXSQLVAR^.sqldata)^.timestamp_time,Ms*10);
|
1086 |
xvar.FModified := True;
|
1087 |
end;
|
1088 |
end;
|
1089 |
|
1090 |
procedure TIBXSQLVAR.SetAsDouble(Value: Double);
|
1091 |
var
|
1092 |
i: Integer;
|
1093 |
xvar: TIBXSQLVAR;
|
1094 |
begin
|
1095 |
if IsNullable then
|
1096 |
IsNull := False;
|
1097 |
for i := 0 to FParent.FCount - 1 do
|
1098 |
if FParent.FNames[i] = FName then
|
1099 |
begin
|
1100 |
xvar := FParent[i];
|
1101 |
xvar.FXSQLVAR^.sqltype := SQL_DOUBLE or (xvar.FXSQLVAR^.sqltype and 1);
|
1102 |
xvar.FXSQLVAR^.sqllen := SizeOf(Double);
|
1103 |
xvar.FXSQLVAR^.sqlscale := 0;
|
1104 |
IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
|
1105 |
PDouble(xvar.FXSQLVAR^.sqldata)^ := Value;
|
1106 |
xvar.FModified := True;
|
1107 |
end;
|
1108 |
end;
|
1109 |
|
1110 |
procedure TIBXSQLVAR.SetAsFloat(Value: Float);
|
1111 |
var
|
1112 |
i: Integer;
|
1113 |
xvar: TIBXSQLVAR;
|
1114 |
begin
|
1115 |
if IsNullable then
|
1116 |
IsNull := False;
|
1117 |
for i := 0 to FParent.FCount - 1 do
|
1118 |
if FParent.FNames[i] = FName then
|
1119 |
begin
|
1120 |
xvar := FParent[i];
|
1121 |
xvar.FXSQLVAR^.sqltype := SQL_FLOAT or (xvar.FXSQLVAR^.sqltype and 1);
|
1122 |
xvar.FXSQLVAR^.sqllen := SizeOf(Float);
|
1123 |
xvar.FXSQLVAR^.sqlscale := 0;
|
1124 |
IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
|
1125 |
PSingle(xvar.FXSQLVAR^.sqldata)^ := Value;
|
1126 |
xvar.FModified := True;
|
1127 |
end;
|
1128 |
end;
|
1129 |
|
1130 |
procedure TIBXSQLVAR.SetAsLong(Value: Long);
|
1131 |
var
|
1132 |
i: Integer;
|
1133 |
xvar: TIBXSQLVAR;
|
1134 |
begin
|
1135 |
if IsNullable then
|
1136 |
IsNull := False;
|
1137 |
for i := 0 to FParent.FCount - 1 do
|
1138 |
if FParent.FNames[i] = FName then
|
1139 |
begin
|
1140 |
xvar := FParent[i];
|
1141 |
xvar.FXSQLVAR^.sqltype := SQL_LONG or (xvar.FXSQLVAR^.sqltype and 1);
|
1142 |
xvar.FXSQLVAR^.sqllen := SizeOf(Long);
|
1143 |
xvar.FXSQLVAR^.sqlscale := 0;
|
1144 |
IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
|
1145 |
PLong(xvar.FXSQLVAR^.sqldata)^ := Value;
|
1146 |
xvar.FModified := True;
|
1147 |
end;
|
1148 |
end;
|
1149 |
|
1150 |
procedure TIBXSQLVAR.SetAsPointer(Value: Pointer);
|
1151 |
var
|
1152 |
i: Integer;
|
1153 |
xvar: TIBXSQLVAR;
|
1154 |
begin
|
1155 |
if IsNullable and (Value = nil) then
|
1156 |
IsNull := True
|
1157 |
else begin
|
1158 |
IsNull := False;
|
1159 |
for i := 0 to FParent.FCount - 1 do
|
1160 |
if FParent.FNames[i] = FName then
|
1161 |
begin
|
1162 |
xvar := FParent[i];
|
1163 |
xvar.FXSQLVAR^.sqltype := SQL_TEXT or (FXSQLVAR^.sqltype and 1);
|
1164 |
Move(Value^, xvar.FXSQLVAR^.sqldata^, xvar.FXSQLVAR^.sqllen);
|
1165 |
xvar.FModified := True;
|
1166 |
end;
|
1167 |
end;
|
1168 |
end;
|
1169 |
|
1170 |
procedure TIBXSQLVAR.SetAsQuad(Value: TISC_QUAD);
|
1171 |
var
|
1172 |
i: Integer;
|
1173 |
xvar: TIBXSQLVAR;
|
1174 |
begin
|
1175 |
if IsNullable then
|
1176 |
IsNull := False;
|
1177 |
for i := 0 to FParent.FCount - 1 do
|
1178 |
if FParent.FNames[i] = FName then
|
1179 |
begin
|
1180 |
xvar := FParent[i];
|
1181 |
if (xvar.FXSQLVAR^.sqltype and (not 1) <> SQL_BLOB) and
|
1182 |
(xvar.FXSQLVAR^.sqltype and (not 1) <> SQL_ARRAY) then
|
1183 |
IBError(ibxeInvalidDataConversion, [nil]);
|
1184 |
xvar.FXSQLVAR^.sqllen := SizeOf(TISC_QUAD);
|
1185 |
IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
|
1186 |
PISC_QUAD(xvar.FXSQLVAR^.sqldata)^ := Value;
|
1187 |
xvar.FModified := True;
|
1188 |
end;
|
1189 |
end;
|
1190 |
|
1191 |
procedure TIBXSQLVAR.SetAsShort(Value: Short);
|
1192 |
var
|
1193 |
i: Integer;
|
1194 |
xvar: TIBXSQLVAR;
|
1195 |
begin
|
1196 |
if IsNullable then
|
1197 |
IsNull := False;
|
1198 |
for i := 0 to FParent.FCount - 1 do
|
1199 |
if FParent.FNames[i] = FName then
|
1200 |
begin
|
1201 |
xvar := FParent[i];
|
1202 |
xvar.FXSQLVAR^.sqltype := SQL_SHORT or (xvar.FXSQLVAR^.sqltype and 1);
|
1203 |
xvar.FXSQLVAR^.sqllen := SizeOf(Short);
|
1204 |
xvar.FXSQLVAR^.sqlscale := 0;
|
1205 |
IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen);
|
1206 |
PShort(xvar.FXSQLVAR^.sqldata)^ := Value;
|
1207 |
xvar.FModified := True;
|
1208 |
end;
|
1209 |
end;
|
1210 |
|
1211 |
procedure TIBXSQLVAR.SetAsString(Value: String);
|
1212 |
var
|
1213 |
stype: Integer;
|
1214 |
ss: TStringStream;
|
1215 |
|
1216 |
procedure SetStringValue;
|
1217 |
var
|
1218 |
i: Integer;
|
1219 |
xvar: TIBXSQLVAR;
|
1220 |
begin
|
1221 |
for i := 0 to FParent.FCount - 1 do
|
1222 |
if FParent.FNames[i] = FName then
|
1223 |
begin
|
1224 |
xvar := FParent[i];
|
1225 |
if (xvar.FXSQLVAR^.sqlname = 'DB_KEY') or {do not localize}
|
1226 |
(xvar.FXSQLVAR^.sqlname = 'RDB$DB_KEY') then {do not localize}
|
1227 |
Move(Value[1], xvar.FXSQLVAR^.sqldata^, xvar.FXSQLVAR^.sqllen)
|
1228 |
else begin
|
1229 |
xvar.FXSQLVAR^.sqltype := SQL_TEXT or (FXSQLVAR^.sqltype and 1);
|
1230 |
xvar.FXSQLVAR^.sqllen := Length(Value);
|
1231 |
IBAlloc(xvar.FXSQLVAR^.sqldata, 0, xvar.FXSQLVAR^.sqllen + 1);
|
1232 |
if (Length(Value) > 0) then
|
1233 |
Move(Value[1], xvar.FXSQLVAR^.sqldata^, xvar.FXSQLVAR^.sqllen);
|
1234 |
end;
|
1235 |
xvar.FModified := True;
|
1236 |
end;
|
1237 |
end;
|
1238 |
|
1239 |
begin
|
1240 |
if IsNullable then
|
1241 |
IsNull := False;
|
1242 |
stype := FXSQLVAR^.sqltype and (not 1);
|
1243 |
if (stype = SQL_TEXT) or (stype = SQL_VARYING) then
|
1244 |
SetStringValue
|
1245 |
else begin
|
1246 |
if (stype = SQL_BLOB) then
|
1247 |
begin
|
1248 |
ss := TStringStream.Create(Value);
|
1249 |
try
|
1250 |
LoadFromStream(ss);
|
1251 |
finally
|
1252 |
ss.Free;
|
1253 |
end;
|
1254 |
end
|
1255 |
else if Value = '' then
|
1256 |
IsNull := True
|
1257 |
else if (stype = SQL_TIMESTAMP) or (stype = SQL_TYPE_DATE) or
|
1258 |
(stype = SQL_TYPE_TIME) then
|
1259 |
SetAsDateTime(StrToDateTime(Value))
|
1260 |
else
|
1261 |
SetStringValue;
|
1262 |
end;
|
1263 |
end;
|
1264 |
|
1265 |
procedure TIBXSQLVAR.SetAsVariant(Value: Variant);
|
1266 |
begin
|
1267 |
if VarIsNull(Value) then
|
1268 |
IsNull := True
|
1269 |
else case VarType(Value) of
|
1270 |
varEmpty, varNull:
|
1271 |
IsNull := True;
|
1272 |
varSmallint, varInteger, varByte:
|
1273 |
AsLong := Value;
|
1274 |
varSingle, varDouble:
|
1275 |
AsDouble := Value;
|
1276 |
varCurrency:
|
1277 |
AsCurrency := Value;
|
1278 |
varBoolean:
|
1279 |
if Value then
|
1280 |
AsLong := ISC_TRUE
|
1281 |
else
|
1282 |
AsLong := ISC_FALSE;
|
1283 |
varDate:
|
1284 |
AsDateTime := Value;
|
1285 |
varOleStr, varString:
|
1286 |
AsString := Value;
|
1287 |
varArray:
|
1288 |
IBError(ibxeNotSupported, [nil]);
|
1289 |
varByRef, varDispatch, varError, varUnknown, varVariant:
|
1290 |
IBError(ibxeNotPermitted, [nil]);
|
1291 |
end;
|
1292 |
end;
|
1293 |
|
1294 |
procedure TIBXSQLVAR.SetAsXSQLVAR(Value: PXSQLVAR);
|
1295 |
var
|
1296 |
i: Integer;
|
1297 |
xvar: TIBXSQLVAR;
|
1298 |
sqlind: PShort;
|
1299 |
sqldata: PChar;
|
1300 |
local_sqllen: Integer;
|
1301 |
begin
|
1302 |
for i := 0 to FParent.FCount - 1 do
|
1303 |
if FParent.FNames[i] = FName then
|
1304 |
begin
|
1305 |
xvar := FParent[i];
|
1306 |
sqlind := xvar.FXSQLVAR^.sqlind;
|
1307 |
sqldata := xvar.FXSQLVAR^.sqldata;
|
1308 |
Move(Value^, xvar.FXSQLVAR^, SizeOf(TXSQLVAR));
|
1309 |
xvar.FXSQLVAR^.sqlind := sqlind;
|
1310 |
xvar.FXSQLVAR^.sqldata := sqldata;
|
1311 |
if (Value^.sqltype and 1 = 1) then
|
1312 |
begin
|
1313 |
if (xvar.FXSQLVAR^.sqlind = nil) then
|
1314 |
IBAlloc(xvar.FXSQLVAR^.sqlind, 0, SizeOf(Short));
|
1315 |
xvar.FXSQLVAR^.sqlind^ := Value^.sqlind^;
|
1316 |
end
|
1317 |
else
|
1318 |
if (xvar.FXSQLVAR^.sqlind <> nil) then
|
1319 |
ReallocMem(xvar.FXSQLVAR^.sqlind, 0);
|
1320 |
if ((xvar.FXSQLVAR^.sqltype and (not 1)) = SQL_VARYING) then
|
1321 |
local_sqllen := xvar.FXSQLVAR^.sqllen + 2
|
1322 |
else
|
1323 |
local_sqllen := xvar.FXSQLVAR^.sqllen;
|
1324 |
FXSQLVAR^.sqlscale := Value^.sqlscale;
|
1325 |
IBAlloc(xvar.FXSQLVAR^.sqldata, 0, local_sqllen);
|
1326 |
Move(Value^.sqldata[0], xvar.FXSQLVAR^.sqldata[0], local_sqllen);
|
1327 |
xvar.FModified := True;
|
1328 |
end;
|
1329 |
end;
|
1330 |
|
1331 |
procedure TIBXSQLVAR.SetIsNull(Value: Boolean);
|
1332 |
var
|
1333 |
i: Integer;
|
1334 |
xvar: TIBXSQLVAR;
|
1335 |
begin
|
1336 |
if Value then
|
1337 |
begin
|
1338 |
if not IsNullable then
|
1339 |
IsNullable := True;
|
1340 |
for i := 0 to FParent.FCount - 1 do
|
1341 |
if FParent.FNames[i] = FName then
|
1342 |
begin
|
1343 |
xvar := FParent[i];
|
1344 |
if Assigned(xvar.FXSQLVAR^.sqlind) then
|
1345 |
xvar.FXSQLVAR^.sqlind^ := -1;
|
1346 |
xvar.FModified := True;
|
1347 |
end;
|
1348 |
end
|
1349 |
else
|
1350 |
if ((not Value) and IsNullable) then
|
1351 |
begin
|
1352 |
for i := 0 to FParent.FCount - 1 do
|
1353 |
if FParent.FNames[i] = FName then
|
1354 |
begin
|
1355 |
xvar := FParent[i];
|
1356 |
if Assigned(xvar.FXSQLVAR^.sqlind) then
|
1357 |
xvar.FXSQLVAR^.sqlind^ := 0;
|
1358 |
xvar.FModified := True;
|
1359 |
end;
|
1360 |
end;
|
1361 |
end;
|
1362 |
|
1363 |
procedure TIBXSQLVAR.SetIsNullable(Value: Boolean);
|
1364 |
var
|
1365 |
i: Integer;
|
1366 |
xvar: TIBXSQLVAR;
|
1367 |
begin
|
1368 |
for i := 0 to FParent.FCount - 1 do
|
1369 |
if FParent.FNames[i] = FName then
|
1370 |
begin
|
1371 |
xvar := FParent[i];
|
1372 |
if (Value <> IsNullable) then
|
1373 |
begin
|
1374 |
if Value then
|
1375 |
begin
|
1376 |
xvar.FXSQLVAR^.sqltype := xvar.FXSQLVAR^.sqltype or 1;
|
1377 |
IBAlloc(xvar.FXSQLVAR^.sqlind, 0, SizeOf(Short));
|
1378 |
end
|
1379 |
else
|
1380 |
begin
|
1381 |
xvar.FXSQLVAR^.sqltype := xvar.FXSQLVAR^.sqltype and (not 1);
|
1382 |
ReallocMem(xvar.FXSQLVAR^.sqlind, 0);
|
1383 |
end;
|
1384 |
end;
|
1385 |
end;
|
1386 |
end;
|
1387 |
|
1388 |
procedure TIBXSQLVAR.Clear;
|
1389 |
begin
|
1390 |
IsNull := true;
|
1391 |
end;
|
1392 |
|
1393 |
|
1394 |
{ TIBXSQLDA }
|
1395 |
constructor TIBXSQLDA.Create(Query: TIBSQL);
|
1396 |
begin
|
1397 |
inherited Create;
|
1398 |
FSQL := Query;
|
1399 |
FNames := TStringList.Create;
|
1400 |
FSize := 0;
|
1401 |
FUniqueRelationName := '';
|
1402 |
end;
|
1403 |
|
1404 |
destructor TIBXSQLDA.Destroy;
|
1405 |
var
|
1406 |
i: Integer;
|
1407 |
begin
|
1408 |
FNames.Free;
|
1409 |
if FXSQLDA <> nil then
|
1410 |
begin
|
1411 |
for i := 0 to FSize - 1 do
|
1412 |
begin
|
1413 |
FreeMem(FXSQLVARs[i].FXSQLVAR^.sqldata);
|
1414 |
FreeMem(FXSQLVARs[i].FXSQLVAR^.sqlind);
|
1415 |
FXSQLVARs[i].Free ;
|
1416 |
end;
|
1417 |
FreeMem(FXSQLDA);
|
1418 |
FXSQLDA := nil;
|
1419 |
FXSQLVARs := nil;
|
1420 |
end;
|
1421 |
inherited Destroy;
|
1422 |
end;
|
1423 |
|
1424 |
procedure TIBXSQLDA.AddName(FieldName: String; Idx: Integer);
|
1425 |
var
|
1426 |
fn: String;
|
1427 |
begin
|
1428 |
fn := FormatIdentifierValue(FSQL.Database.SQLDialect, FieldName);
|
1429 |
while FNames.Count <= Idx do
|
1430 |
FNames.Add('');
|
1431 |
FNames[Idx] := fn;
|
1432 |
FXSQLVARs[Idx].FName := fn;
|
1433 |
FXSQLVARs[Idx].FIndex := Idx;
|
1434 |
end;
|
1435 |
|
1436 |
function TIBXSQLDA.GetModified: Boolean;
|
1437 |
var
|
1438 |
i: Integer;
|
1439 |
begin
|
1440 |
result := False;
|
1441 |
for i := 0 to FCount - 1 do
|
1442 |
if FXSQLVARs[i].Modified then
|
1443 |
begin
|
1444 |
result := True;
|
1445 |
exit;
|
1446 |
end;
|
1447 |
end;
|
1448 |
|
1449 |
function TIBXSQLDA.GetNames: String;
|
1450 |
begin
|
1451 |
result := FNames.Text;
|
1452 |
end;
|
1453 |
|
1454 |
function TIBXSQLDA.GetRecordSize: Integer;
|
1455 |
begin
|
1456 |
result := SizeOf(TIBXSQLDA) + XSQLDA_LENGTH(FSize);
|
1457 |
end;
|
1458 |
|
1459 |
function TIBXSQLDA.GetXSQLDA: PXSQLDA;
|
1460 |
begin
|
1461 |
result := FXSQLDA;
|
1462 |
end;
|
1463 |
|
1464 |
function TIBXSQLDA.GetXSQLVAR(Idx: Integer): TIBXSQLVAR;
|
1465 |
begin
|
1466 |
if (Idx < 0) or (Idx >= FCount) then
|
1467 |
IBError(ibxeXSQLDAIndexOutOfRange, [nil]);
|
1468 |
result := FXSQLVARs[Idx]
|
1469 |
end;
|
1470 |
|
1471 |
function TIBXSQLDA.ByName(Idx: String): TIBXSQLVAR;
|
1472 |
begin
|
1473 |
result := GetXSQLVARByName(Idx);
|
1474 |
if result = nil then
|
1475 |
IBError(ibxeFieldNotFound, [Idx]);
|
1476 |
end;
|
1477 |
|
1478 |
function TIBXSQLDA.GetXSQLVARByName(Idx: String): TIBXSQLVAR;
|
1479 |
var
|
1480 |
s: String;
|
1481 |
i, Cnt: Integer;
|
1482 |
begin
|
1483 |
s := FormatIdentifierValue(FSQL.Database.SQLDialect, Idx);
|
1484 |
i := 0;
|
1485 |
Cnt := FNames.Count;
|
1486 |
while (i < Cnt) and (FNames[i] <> s) do Inc(i);
|
1487 |
if i = Cnt then
|
1488 |
result := nil
|
1489 |
else
|
1490 |
result := GetXSQLVAR(i);
|
1491 |
end;
|
1492 |
|
1493 |
procedure TIBXSQLDA.Initialize;
|
1494 |
var
|
1495 |
i, j, j_len: Integer;
|
1496 |
NamesWereEmpty: Boolean;
|
1497 |
st: String;
|
1498 |
bUnique: Boolean;
|
1499 |
begin
|
1500 |
bUnique := True;
|
1501 |
NamesWereEmpty := (FNames.Count = 0);
|
1502 |
if FXSQLDA <> nil then
|
1503 |
begin
|
1504 |
for i := 0 to FCount - 1 do
|
1505 |
begin
|
1506 |
with FXSQLVARs[i].Data^ do
|
1507 |
begin
|
1508 |
if bUnique and (strpas(relname) <> '') then
|
1509 |
begin
|
1510 |
if FUniqueRelationName = '' then
|
1511 |
FUniqueRelationName := strpas(relname)
|
1512 |
else
|
1513 |
if strpas(relname) <> FUniqueRelationName then
|
1514 |
begin
|
1515 |
FUniqueRelationName := '';
|
1516 |
bUnique := False;
|
1517 |
end;
|
1518 |
end;
|
1519 |
if NamesWereEmpty then
|
1520 |
begin
|
1521 |
st := strpas(aliasname);
|
1522 |
if st = '' then
|
1523 |
begin
|
1524 |
st := 'F_'; {do not localize}
|
1525 |
aliasname_length := 2;
|
1526 |
j := 1; j_len := 1;
|
1527 |
StrPCopy(aliasname, st + IntToStr(j));
|
1528 |
end
|
1529 |
else
|
1530 |
begin
|
1531 |
StrPCopy(aliasname, st);
|
1532 |
j := 0; j_len := 0;
|
1533 |
end;
|
1534 |
while GetXSQLVARByName(strpas(aliasname)) <> nil do
|
1535 |
begin
|
1536 |
Inc(j); j_len := Length(IntToStr(j));
|
1537 |
if j_len + aliasname_length > 31 then
|
1538 |
StrPCopy(aliasname,
|
1539 |
Copy(st, 1, 31 - j_len) +
|
1540 |
IntToStr(j))
|
1541 |
else
|
1542 |
StrPCopy(aliasname, st + IntToStr(j));
|
1543 |
end;
|
1544 |
Inc(aliasname_length, j_len);
|
1545 |
AddName(strpas(aliasname), i);
|
1546 |
end;
|
1547 |
case sqltype and (not 1) of
|
1548 |
SQL_TEXT, SQL_TYPE_DATE, SQL_TYPE_TIME, SQL_TIMESTAMP,
|
1549 |
SQL_BLOB, SQL_ARRAY, SQL_QUAD, SQL_SHORT,
|
1550 |
SQL_LONG, SQL_INT64, SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: begin
|
1551 |
if (sqllen = 0) then
|
1552 |
{ Make sure you get a valid pointer anyway
|
1553 |
select '' from foo }
|
1554 |
IBAlloc(sqldata, 0, 1)
|
1555 |
else
|
1556 |
IBAlloc(sqldata, 0, sqllen)
|
1557 |
end;
|
1558 |
SQL_VARYING: begin
|
1559 |
IBAlloc(sqldata, 0, sqllen + 2);
|
1560 |
end;
|
1561 |
else
|
1562 |
IBError(ibxeUnknownSQLDataType, [sqltype and (not 1)])
|
1563 |
end;
|
1564 |
if (sqltype and 1 = 1) then
|
1565 |
IBAlloc(sqlind, 0, SizeOf(Short))
|
1566 |
else
|
1567 |
if (sqlind <> nil) then
|
1568 |
ReallocMem(sqlind, 0);
|
1569 |
end;
|
1570 |
end;
|
1571 |
end;
|
1572 |
end;
|
1573 |
|
1574 |
procedure TIBXSQLDA.SetCount(Value: Integer);
|
1575 |
var
|
1576 |
i, OldSize: Integer;
|
1577 |
p : PXSQLVAR;
|
1578 |
begin
|
1579 |
FNames.Clear;
|
1580 |
FCount := Value;
|
1581 |
if FCount = 0 then
|
1582 |
FUniqueRelationName := ''
|
1583 |
else
|
1584 |
begin
|
1585 |
if FSize > 0 then
|
1586 |
OldSize := XSQLDA_LENGTH(FSize)
|
1587 |
else
|
1588 |
OldSize := 0;
|
1589 |
if FCount > FSize then
|
1590 |
begin
|
1591 |
IBAlloc(FXSQLDA, OldSize, XSQLDA_LENGTH(FCount));
|
1592 |
SetLength(FXSQLVARs, FCount);
|
1593 |
FXSQLDA^.version := SQLDA_VERSION1;
|
1594 |
p := @FXSQLDA^.sqlvar[0];
|
1595 |
for i := 0 to FCount - 1 do
|
1596 |
begin
|
1597 |
if i >= FSize then
|
1598 |
FXSQLVARs[i] := TIBXSQLVAR.Create(self, FSQL);
|
1599 |
FXSQLVARs[i].FXSQLVAR := p;
|
1600 |
p := Pointer(PChar(p) + sizeof(FXSQLDA^.sqlvar));
|
1601 |
end;
|
1602 |
FSize := FCount;
|
1603 |
end;
|
1604 |
if FSize > 0 then
|
1605 |
begin
|
1606 |
FXSQLDA^.sqln := Value;
|
1607 |
FXSQLDA^.sqld := Value;
|
1608 |
end;
|
1609 |
end;
|
1610 |
end;
|
1611 |
|
1612 |
{ TIBOutputDelimitedFile }
|
1613 |
|
1614 |
destructor TIBOutputDelimitedFile.Destroy;
|
1615 |
begin
|
1616 |
{$IFDEF UNIX}
|
1617 |
if FHandle <> -1 then
|
1618 |
fpclose(FHandle);
|
1619 |
{$ELSE}
|
1620 |
if FHandle <> 0 then
|
1621 |
begin
|
1622 |
FlushFileBuffers(FHandle);
|
1623 |
CloseHandle(FHandle);
|
1624 |
end;
|
1625 |
{$ENDIF}
|
1626 |
inherited Destroy;
|
1627 |
end;
|
1628 |
|
1629 |
procedure TIBOutputDelimitedFile.ReadyFile;
|
1630 |
var
|
1631 |
i: Integer;
|
1632 |
{$IFDEF UNIX}
|
1633 |
BytesWritten: cint;
|
1634 |
{$ELSE}
|
1635 |
BytesWritten: DWORD;
|
1636 |
{$ENDIF}
|
1637 |
st: string;
|
1638 |
begin
|
1639 |
if FColDelimiter = '' then
|
1640 |
FColDelimiter := TAB;
|
1641 |
if FRowDelimiter = '' then
|
1642 |
FRowDelimiter := CRLF;
|
1643 |
{$IFDEF UNIX}
|
1644 |
FHandle := FpOpen(Filename,O_WrOnly or O_Creat);
|
1645 |
{$ELSE}
|
1646 |
FHandle := CreateFile(PChar(Filename), GENERIC_WRITE, 0, nil, CREATE_ALWAYS,
|
1647 |
FILE_ATTRIBUTE_NORMAL, 0);
|
1648 |
if FHandle = INVALID_HANDLE_VALUE then
|
1649 |
FHandle := 0;
|
1650 |
{$ENDIF}
|
1651 |
if FOutputTitles then
|
1652 |
begin
|
1653 |
for i := 0 to Columns.Count - 1 do
|
1654 |
if i = 0 then
|
1655 |
st := strpas(Columns[i].Data^.aliasname)
|
1656 |
else
|
1657 |
st := st + FColDelimiter + strpas(Columns[i].Data^.aliasname);
|
1658 |
st := st + FRowDelimiter;
|
1659 |
{$IFDEF UNIX}
|
1660 |
if FHandle <> -1 then
|
1661 |
BytesWritten := FpWrite(FHandle,st[1],Length(st));
|
1662 |
if BytesWritten = -1 then
|
1663 |
raise Exception.Create('File Write Error');
|
1664 |
{$ELSE}
|
1665 |
WriteFile(FHandle, st[1], Length(st), BytesWritten, nil);
|
1666 |
{$ENDIF}
|
1667 |
end;
|
1668 |
end;
|
1669 |
|
1670 |
function TIBOutputDelimitedFile.WriteColumns: Boolean;
|
1671 |
var
|
1672 |
i: Integer;
|
1673 |
{$IFDEF UNIX}
|
1674 |
BytesWritten: cint;
|
1675 |
{$ELSE}
|
1676 |
BytesWritten: DWORD;
|
1677 |
{$ENDIF}
|
1678 |
st: string;
|
1679 |
begin
|
1680 |
result := False;
|
1681 |
{$IFDEF UNIX}
|
1682 |
if FHandle <> -1 then
|
1683 |
{$ELSE}
|
1684 |
if FHandle <> 0 then
|
1685 |
{$ENDIF}
|
1686 |
begin
|
1687 |
st := '';
|
1688 |
for i := 0 to Columns.Count - 1 do
|
1689 |
begin
|
1690 |
if i > 0 then
|
1691 |
st := st + FColDelimiter;
|
1692 |
st := st + StripString(Columns[i].AsString, FColDelimiter + FRowDelimiter);
|
1693 |
end;
|
1694 |
st := st + FRowDelimiter;
|
1695 |
{$IFDEF UNIX}
|
1696 |
BytesWritten := FpWrite(FHandle,st[1],Length(st));
|
1697 |
{$ELSE}
|
1698 |
WriteFile(FHandle, st[1], Length(st), BytesWritten, nil);
|
1699 |
{$ENDIF}
|
1700 |
if BytesWritten = DWORD(Length(st)) then
|
1701 |
result := True;
|
1702 |
end
|
1703 |
end;
|
1704 |
|
1705 |
{ TIBInputDelimitedFile }
|
1706 |
|
1707 |
destructor TIBInputDelimitedFile.Destroy;
|
1708 |
begin
|
1709 |
FFile.Free;
|
1710 |
inherited Destroy;
|
1711 |
end;
|
1712 |
|
1713 |
function TIBInputDelimitedFile.GetColumn(var Col: string): Integer;
|
1714 |
var
|
1715 |
c: Char;
|
1716 |
BytesRead: Integer;
|
1717 |
|
1718 |
procedure ReadInput;
|
1719 |
begin
|
1720 |
if FLookAhead <> NULL_TERMINATOR then
|
1721 |
begin
|
1722 |
c := FLookAhead;
|
1723 |
BytesRead := 1;
|
1724 |
FLookAhead := NULL_TERMINATOR;
|
1725 |
end else
|
1726 |
BytesRead := FFile.Read(c, 1);
|
1727 |
end;
|
1728 |
|
1729 |
procedure CheckCRLF(Delimiter: string);
|
1730 |
begin
|
1731 |
if (c = CR) and (Pos(LF, Delimiter) > 0) then {mbcs ok}
|
1732 |
begin
|
1733 |
BytesRead := FFile.Read(c, 1);
|
1734 |
if (BytesRead = 1) and (c <> #10) then
|
1735 |
FLookAhead := c
|
1736 |
end;
|
1737 |
end;
|
1738 |
|
1739 |
begin
|
1740 |
Col := '';
|
1741 |
result := 0;
|
1742 |
ReadInput;
|
1743 |
while BytesRead <> 0 do begin
|
1744 |
if Pos(c, FColDelimiter) > 0 then {mbcs ok}
|
1745 |
begin
|
1746 |
CheckCRLF(FColDelimiter);
|
1747 |
result := 1;
|
1748 |
break;
|
1749 |
end else if Pos(c, FRowDelimiter) > 0 then {mbcs ok}
|
1750 |
begin
|
1751 |
CheckCRLF(FRowDelimiter);
|
1752 |
result := 2;
|
1753 |
break;
|
1754 |
end else
|
1755 |
Col := Col + c;
|
1756 |
ReadInput;
|
1757 |
end;
|
1758 |
end;
|
1759 |
|
1760 |
function TIBInputDelimitedFile.ReadParameters: Boolean;
|
1761 |
var
|
1762 |
i, curcol: Integer;
|
1763 |
Col: string;
|
1764 |
begin
|
1765 |
result := False;
|
1766 |
if not FEOF then begin
|
1767 |
curcol := 0;
|
1768 |
repeat
|
1769 |
i := GetColumn(Col);
|
1770 |
if (i = 0) then
|
1771 |
FEOF := True;
|
1772 |
if (curcol < Params.Count) then
|
1773 |
begin
|
1774 |
try
|
1775 |
if (Col = '') and
|
1776 |
(ReadBlanksAsNull) then
|
1777 |
Params[curcol].IsNull := True
|
1778 |
else
|
1779 |
Params[curcol].AsString := Col;
|
1780 |
Inc(curcol);
|
1781 |
except
|
1782 |
on E: Exception do begin
|
1783 |
if not (FEOF and (curcol = Params.Count)) then
|
1784 |
raise;
|
1785 |
end;
|
1786 |
end;
|
1787 |
end;
|
1788 |
until (FEOF) or (i = 2);
|
1789 |
result := ((FEOF) and (curcol = Params.Count)) or
|
1790 |
(not FEOF);
|
1791 |
end;
|
1792 |
end;
|
1793 |
|
1794 |
procedure TIBInputDelimitedFile.ReadyFile;
|
1795 |
begin
|
1796 |
if FColDelimiter = '' then
|
1797 |
FColDelimiter := TAB;
|
1798 |
if FRowDelimiter = '' then
|
1799 |
FRowDelimiter := CRLF;
|
1800 |
FLookAhead := NULL_TERMINATOR;
|
1801 |
FEOF := False;
|
1802 |
if FFile <> nil then
|
1803 |
FFile.Free;
|
1804 |
FFile := TFileStream.Create(FFilename, fmOpenRead or fmShareDenyWrite);
|
1805 |
if FSkipTitles then
|
1806 |
ReadParameters;
|
1807 |
end;
|
1808 |
|
1809 |
{ TIBOutputRawFile }
|
1810 |
destructor TIBOutputRawFile.Destroy;
|
1811 |
begin
|
1812 |
{$IFDEF UNIX}
|
1813 |
if FHandle <> -1 then
|
1814 |
fpclose(FHandle);
|
1815 |
{$ELSE}
|
1816 |
if FHandle <> 0 then
|
1817 |
begin
|
1818 |
FlushFileBuffers(FHandle);
|
1819 |
CloseHandle(FHandle);
|
1820 |
end;
|
1821 |
{$ENDIF}
|
1822 |
inherited Destroy;
|
1823 |
end;
|
1824 |
|
1825 |
procedure TIBOutputRawFile.ReadyFile;
|
1826 |
begin
|
1827 |
{$IFDEF UNIX}
|
1828 |
FHandle := FpOpen(Filename,O_WrOnly or O_Creat);
|
1829 |
{$ELSE}
|
1830 |
FHandle := CreateFile(PChar(Filename), GENERIC_WRITE, 0, nil, CREATE_ALWAYS,
|
1831 |
FILE_ATTRIBUTE_NORMAL, 0);
|
1832 |
if FHandle = INVALID_HANDLE_VALUE then
|
1833 |
FHandle := 0;
|
1834 |
{$ENDIF}
|
1835 |
end;
|
1836 |
|
1837 |
function TIBOutputRawFile.WriteColumns: Boolean;
|
1838 |
var
|
1839 |
i: Integer;
|
1840 |
BytesWritten: DWord;
|
1841 |
begin
|
1842 |
result := False;
|
1843 |
if FHandle <> 0 then
|
1844 |
begin
|
1845 |
for i := 0 to Columns.Count - 1 do
|
1846 |
begin
|
1847 |
{$IFDEF UNIX}
|
1848 |
BytesWritten := FpWrite(FHandle,Columns[i].Data^.sqldata^, Columns[i].Data^.sqllen);
|
1849 |
{$ELSE}
|
1850 |
WriteFile(FHandle, Columns[i].Data^.sqldata^, Columns[i].Data^.sqllen,
|
1851 |
BytesWritten, nil);
|
1852 |
{$ENDIF}
|
1853 |
if BytesWritten <> DWORD(Columns[i].Data^.sqllen) then
|
1854 |
exit;
|
1855 |
end;
|
1856 |
result := True;
|
1857 |
end;
|
1858 |
end;
|
1859 |
|
1860 |
{ TIBInputRawFile }
|
1861 |
destructor TIBInputRawFile.Destroy;
|
1862 |
begin
|
1863 |
{$IFDEF UNIX}
|
1864 |
if FHandle <> -1 then
|
1865 |
fpclose(FHandle);
|
1866 |
{$ELSE}
|
1867 |
if FHandle <> 0 then
|
1868 |
CloseHandle(FHandle);
|
1869 |
{$ENDIF}
|
1870 |
inherited Destroy;
|
1871 |
end;
|
1872 |
|
1873 |
function TIBInputRawFile.ReadParameters: Boolean;
|
1874 |
var
|
1875 |
i: Integer;
|
1876 |
BytesRead: DWord;
|
1877 |
begin
|
1878 |
result := False;
|
1879 |
{$IFDEF UNIX}
|
1880 |
if FHandle <> -1 then
|
1881 |
{$ELSE}
|
1882 |
if FHandle <> 0 then
|
1883 |
{$ENDIF}
|
1884 |
begin
|
1885 |
for i := 0 to Params.Count - 1 do
|
1886 |
begin
|
1887 |
{$IFDEF UNIX}
|
1888 |
BytesRead := FpRead(FHandle,Params[i].Data^.sqldata^,Params[i].Data^.sqllen);
|
1889 |
{$ELSE}
|
1890 |
ReadFile(FHandle, Params[i].Data^.sqldata^, Params[i].Data^.sqllen,
|
1891 |
BytesRead, nil);
|
1892 |
{$ENDIF}
|
1893 |
if BytesRead <> DWORD(Params[i].Data^.sqllen) then
|
1894 |
exit;
|
1895 |
end;
|
1896 |
result := True;
|
1897 |
end;
|
1898 |
end;
|
1899 |
|
1900 |
procedure TIBInputRawFile.ReadyFile;
|
1901 |
begin
|
1902 |
{$IFDEF UNIX}
|
1903 |
if FHandle <> -1 then
|
1904 |
fpclose(FHandle);
|
1905 |
FHandle := FpOpen(Filename,O_RdOnly);
|
1906 |
if FHandle = -1 then
|
1907 |
raise Exception.CreateFmt('Unable to open file %s',[Filename]);
|
1908 |
{$ELSE}
|
1909 |
if FHandle <> 0 then
|
1910 |
CloseHandle(FHandle);
|
1911 |
FHandle := CreateFile(PChar(Filename), GENERIC_READ, 0, nil, OPEN_EXISTING,
|
1912 |
FILE_FLAG_SEQUENTIAL_SCAN, 0);
|
1913 |
if FHandle = INVALID_HANDLE_VALUE then
|
1914 |
FHandle := 0;
|
1915 |
{$ENDIF}
|
1916 |
end;
|
1917 |
|
1918 |
{ TIBSQL }
|
1919 |
constructor TIBSQL.Create(AOwner: TComponent);
|
1920 |
begin
|
1921 |
inherited Create(AOwner);
|
1922 |
FIBLoaded := False;
|
1923 |
CheckIBLoaded;
|
1924 |
FIBLoaded := True;
|
1925 |
FGenerateParamNames := False;
|
1926 |
FGoToFirstRecordOnExecute := True;
|
1927 |
FBase := TIBBase.Create(Self);
|
1928 |
FBase.BeforeDatabaseDisconnect := DoBeforeDatabaseDisconnect;
|
1929 |
FBase.BeforeTransactionEnd := BeforeTransactionEnd;
|
1930 |
FBOF := False;
|
1931 |
FEOF := False;
|
1932 |
FPrepared := False;
|
1933 |
FRecordCount := 0;
|
1934 |
FSQL := TStringList.Create;
|
1935 |
TStringList(FSQL).OnChanging := SQLChanging;
|
1936 |
FProcessedSQL := TStringList.Create;
|
1937 |
FHandle := nil;
|
1938 |
FSQLParams := TIBXSQLDA.Create(self);
|
1939 |
FSQLRecord := TIBXSQLDA.Create(self);
|
1940 |
FSQLType := SQLUnknown;
|
1941 |
FParamCheck := True;
|
1942 |
FCursor := Name + RandomString(8);
|
1943 |
if AOwner is TIBDatabase then
|
1944 |
Database := TIBDatabase(AOwner)
|
1945 |
else
|
1946 |
if AOwner is TIBTransaction then
|
1947 |
Transaction := TIBTransaction(AOwner);
|
1948 |
end;
|
1949 |
|
1950 |
destructor TIBSQL.Destroy;
|
1951 |
begin
|
1952 |
if FIBLoaded then
|
1953 |
begin
|
1954 |
if (FOpen) then
|
1955 |
Close;
|
1956 |
if (FHandle <> nil) then
|
1957 |
FreeHandle;
|
1958 |
FSQL.Free;
|
1959 |
FProcessedSQL.Free;
|
1960 |
FBase.Free;
|
1961 |
FSQLParams.Free;
|
1962 |
FSQLRecord.Free;
|
1963 |
end;
|
1964 |
inherited Destroy;
|
1965 |
end;
|
1966 |
|
1967 |
procedure TIBSQL.BatchInput(InputObject: TIBBatchInput);
|
1968 |
begin
|
1969 |
if not Prepared then
|
1970 |
Prepare;
|
1971 |
InputObject.FParams := Self.FSQLParams;
|
1972 |
InputObject.ReadyFile;
|
1973 |
if FSQLType in [SQLInsert, SQLUpdate, SQLDelete, SQLExecProcedure] then
|
1974 |
while InputObject.ReadParameters do
|
1975 |
ExecQuery;
|
1976 |
end;
|
1977 |
|
1978 |
procedure TIBSQL.BatchOutput(OutputObject: TIBBatchOutput);
|
1979 |
begin
|
1980 |
CheckClosed;
|
1981 |
if not Prepared then
|
1982 |
Prepare;
|
1983 |
if FSQLType = SQLSelect then begin
|
1984 |
try
|
1985 |
ExecQuery;
|
1986 |
OutputObject.FColumns := Self.FSQLRecord;
|
1987 |
OutputObject.ReadyFile;
|
1988 |
if not FGoToFirstRecordOnExecute then
|
1989 |
Next;
|
1990 |
while (not Eof) and (OutputObject.WriteColumns) do
|
1991 |
Next;
|
1992 |
finally
|
1993 |
Close;
|
1994 |
end;
|
1995 |
end;
|
1996 |
end;
|
1997 |
|
1998 |
procedure TIBSQL.CheckClosed;
|
1999 |
begin
|
2000 |
if FOpen then IBError(ibxeSQLOpen, [nil]);
|
2001 |
end;
|
2002 |
|
2003 |
procedure TIBSQL.CheckOpen;
|
2004 |
begin
|
2005 |
if not FOpen then IBError(ibxeSQLClosed, [nil]);
|
2006 |
end;
|
2007 |
|
2008 |
procedure TIBSQL.CheckValidStatement;
|
2009 |
begin
|
2010 |
FBase.CheckTransaction;
|
2011 |
if (FHandle = nil) then
|
2012 |
IBError(ibxeInvalidStatementHandle, [nil]);
|
2013 |
end;
|
2014 |
|
2015 |
procedure TIBSQL.Close;
|
2016 |
var
|
2017 |
isc_res: ISC_STATUS;
|
2018 |
begin
|
2019 |
try
|
2020 |
if (FHandle <> nil) and (SQLType = SQLSelect) and FOpen then begin
|
2021 |
isc_res := Call(
|
2022 |
isc_dsql_free_statement(StatusVector, @FHandle, DSQL_close),
|
2023 |
False);
|
2024 |
if (StatusVector^ = 1) and (isc_res > 0) and
|
2025 |
not CheckStatusVector(
|
2026 |
[isc_bad_stmt_handle, isc_dsql_cursor_close_err]) then
|
2027 |
IBDatabaseError;
|
2028 |
end;
|
2029 |
finally
|
2030 |
FEOF := False;
|
2031 |
FBOF := False;
|
2032 |
FOpen := False;
|
2033 |
FRecordCount := 0;
|
2034 |
end;
|
2035 |
end;
|
2036 |
|
2037 |
function TIBSQL.Call(ErrCode: ISC_STATUS; RaiseError: Boolean): ISC_STATUS;
|
2038 |
begin
|
2039 |
result := 0;
|
2040 |
if Transaction <> nil then
|
2041 |
result := Transaction.Call(ErrCode, RaiseError)
|
2042 |
else
|
2043 |
if RaiseError and (ErrCode > 0) then
|
2044 |
IBDataBaseError;
|
2045 |
end;
|
2046 |
|
2047 |
function TIBSQL.Current: TIBXSQLDA;
|
2048 |
begin
|
2049 |
result := FSQLRecord;
|
2050 |
end;
|
2051 |
|
2052 |
function TIBSQL.GetFieldCount: integer;
|
2053 |
begin
|
2054 |
Result := FSQLRecord.Count
|
2055 |
end;
|
2056 |
|
2057 |
procedure TIBSQL.DoBeforeDatabaseDisconnect(Sender: TObject);
|
2058 |
begin
|
2059 |
if (FHandle <> nil) then begin
|
2060 |
Close;
|
2061 |
FreeHandle;
|
2062 |
end;
|
2063 |
end;
|
2064 |
|
2065 |
procedure TIBSQL.ExecQuery;
|
2066 |
var
|
2067 |
fetch_res: ISC_STATUS;
|
2068 |
begin
|
2069 |
CheckClosed;
|
2070 |
if not Prepared then Prepare;
|
2071 |
CheckValidStatement;
|
2072 |
case FSQLType of
|
2073 |
SQLSelect: begin
|
2074 |
Call(isc_dsql_execute2(StatusVector,
|
2075 |
TRHandle,
|
2076 |
@FHandle,
|
2077 |
Database.SQLDialect,
|
2078 |
FSQLParams.AsXSQLDA,
|
2079 |
nil), True);
|
2080 |
Call(
|
2081 |
isc_dsql_set_cursor_name(StatusVector, @FHandle, PChar(FCursor), 0),
|
2082 |
True);
|
2083 |
FOpen := True;
|
2084 |
FBOF := True;
|
2085 |
FEOF := False;
|
2086 |
FRecordCount := 0;
|
2087 |
if FGoToFirstRecordOnExecute then
|
2088 |
Next;
|
2089 |
end;
|
2090 |
SQLExecProcedure: begin
|
2091 |
fetch_res := Call(isc_dsql_execute2(StatusVector,
|
2092 |
TRHandle,
|
2093 |
@FHandle,
|
2094 |
Database.SQLDialect,
|
2095 |
FSQLParams.AsXSQLDA,
|
2096 |
FSQLRecord.AsXSQLDA), False);
|
2097 |
if (fetch_res <> 0) and (fetch_res <> isc_deadlock) then
|
2098 |
begin
|
2099 |
{ Sometimes a prepared stored procedure appears to get
|
2100 |
off sync on the server ....This code is meant to try
|
2101 |
to work around the problem simply by "retrying". This
|
2102 |
need to be reproduced and fixed.
|
2103 |
}
|
2104 |
isc_dsql_prepare(StatusVector, TRHandle, @FHandle, 0,
|
2105 |
PChar(FProcessedSQL.Text), 1, nil);
|
2106 |
Call(isc_dsql_execute2(StatusVector,
|
2107 |
TRHandle,
|
2108 |
@FHandle,
|
2109 |
Database.SQLDialect,
|
2110 |
FSQLParams.AsXSQLDA,
|
2111 |
FSQLRecord.AsXSQLDA), True);
|
2112 |
end;
|
2113 |
end
|
2114 |
else
|
2115 |
Call(isc_dsql_execute(StatusVector,
|
2116 |
TRHandle,
|
2117 |
@FHandle,
|
2118 |
Database.SQLDialect,
|
2119 |
FSQLParams.AsXSQLDA), True)
|
2120 |
end;
|
2121 |
if not (csDesigning in ComponentState) then
|
2122 |
MonitorHook.SQLExecute(Self);
|
2123 |
end;
|
2124 |
|
2125 |
function TIBSQL.GetEOF: Boolean;
|
2126 |
begin
|
2127 |
result := FEOF or not FOpen;
|
2128 |
end;
|
2129 |
|
2130 |
function TIBSQL.FieldByName(FieldName: String): TIBXSQLVAR;
|
2131 |
var
|
2132 |
i: Integer;
|
2133 |
begin
|
2134 |
i := GetFieldIndex(FieldName);
|
2135 |
if (i < 0) then
|
2136 |
IBError(ibxeFieldNotFound, [FieldName]);
|
2137 |
result := GetFields(i);
|
2138 |
end;
|
2139 |
|
2140 |
function TIBSQL.ParamByName(ParamName: String): TIBXSQLVAR;
|
2141 |
begin
|
2142 |
Result := Params.ByName(ParamName);
|
2143 |
end;
|
2144 |
|
2145 |
function TIBSQL.GetFields(const Idx: Integer): TIBXSQLVAR;
|
2146 |
begin
|
2147 |
if (Idx < 0) or (Idx >= FSQLRecord.Count) then
|
2148 |
IBError(ibxeFieldNotFound, [IntToStr(Idx)]);
|
2149 |
result := FSQLRecord[Idx];
|
2150 |
end;
|
2151 |
|
2152 |
function TIBSQL.GetFieldIndex(FieldName: String): Integer;
|
2153 |
begin
|
2154 |
if (FSQLRecord.GetXSQLVarByName(FieldName) = nil) then
|
2155 |
result := -1
|
2156 |
else
|
2157 |
result := FSQLRecord.GetXSQLVarByName(FieldName).Index;
|
2158 |
end;
|
2159 |
|
2160 |
function TIBSQL.Next: TIBXSQLDA;
|
2161 |
var
|
2162 |
fetch_res: ISC_STATUS;
|
2163 |
begin
|
2164 |
result := nil;
|
2165 |
if not FEOF then begin
|
2166 |
CheckOpen;
|
2167 |
{ Go to the next record... }
|
2168 |
fetch_res :=
|
2169 |
Call(isc_dsql_fetch(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.AsXSQLDA), False);
|
2170 |
if (fetch_res = 100) or (CheckStatusVector([isc_dsql_cursor_err])) then begin
|
2171 |
FEOF := True;
|
2172 |
end else if (fetch_res > 0) then begin
|
2173 |
try
|
2174 |
IBDataBaseError;
|
2175 |
except
|
2176 |
Close;
|
2177 |
raise;
|
2178 |
end;
|
2179 |
end else begin
|
2180 |
Inc(FRecordCount);
|
2181 |
FBOF := False;
|
2182 |
result := FSQLRecord;
|
2183 |
end;
|
2184 |
if not (csDesigning in ComponentState) then
|
2185 |
MonitorHook.SQLFetch(Self);
|
2186 |
end;
|
2187 |
end;
|
2188 |
|
2189 |
procedure TIBSQL.FreeHandle;
|
2190 |
var
|
2191 |
isc_res: ISC_STATUS;
|
2192 |
begin
|
2193 |
try
|
2194 |
{ The following two lines merely set the SQLDA count
|
2195 |
variable FCount to 0, but do not deallocate
|
2196 |
That way the allocations can be reused for
|
2197 |
a new query sring in the same SQL instance }
|
2198 |
FSQLRecord.Count := 0;
|
2199 |
FSQLParams.Count := 0;
|
2200 |
if FHandle <> nil then begin
|
2201 |
isc_res :=
|
2202 |
Call(isc_dsql_free_statement(StatusVector, @FHandle, DSQL_drop), False);
|
2203 |
if (StatusVector^ = 1) and (isc_res > 0) and (isc_res <> isc_bad_stmt_handle) then
|
2204 |
IBDataBaseError;
|
2205 |
end;
|
2206 |
finally
|
2207 |
FPrepared := False;
|
2208 |
FHandle := nil;
|
2209 |
end;
|
2210 |
end;
|
2211 |
|
2212 |
function TIBSQL.GetDatabase: TIBDatabase;
|
2213 |
begin
|
2214 |
result := FBase.Database;
|
2215 |
end;
|
2216 |
|
2217 |
function TIBSQL.GetDBHandle: PISC_DB_HANDLE;
|
2218 |
begin
|
2219 |
result := FBase.DBHandle;
|
2220 |
end;
|
2221 |
|
2222 |
function TIBSQL.GetPlan: String;
|
2223 |
var
|
2224 |
result_buffer: array[0..16384] of Char;
|
2225 |
result_length, i: Integer;
|
2226 |
info_request: Char;
|
2227 |
begin
|
2228 |
if (not Prepared) or
|
2229 |
(not (FSQLType in [SQLSelect, SQLSelectForUpdate,
|
2230 |
{TODO: SQLExecProcedure, }
|
2231 |
SQLUpdate, SQLDelete])) then
|
2232 |
result := ''
|
2233 |
else begin
|
2234 |
info_request := Char(isc_info_sql_get_plan);
|
2235 |
Call(isc_dsql_sql_info(StatusVector, @FHandle, 2, @info_request,
|
2236 |
SizeOf(result_buffer), result_buffer), True);
|
2237 |
if (result_buffer[0] <> Char(isc_info_sql_get_plan)) then
|
2238 |
IBError(ibxeUnknownError, [nil]);
|
2239 |
result_length := isc_vax_integer(@result_buffer[1], 2);
|
2240 |
SetString(result, nil, result_length);
|
2241 |
for i := 1 to result_length do
|
2242 |
result[i] := result_buffer[i + 2];
|
2243 |
result := Trim(result);
|
2244 |
end;
|
2245 |
end;
|
2246 |
|
2247 |
function TIBSQL.GetRecordCount: Integer;
|
2248 |
begin
|
2249 |
result := FRecordCount;
|
2250 |
end;
|
2251 |
|
2252 |
function TIBSQL.GetRowsAffected: integer;
|
2253 |
var
|
2254 |
result_buffer: array[0..1048] of Char;
|
2255 |
info_request: Char;
|
2256 |
begin
|
2257 |
if not Prepared then
|
2258 |
result := -1
|
2259 |
else begin
|
2260 |
info_request := Char(isc_info_sql_records);
|
2261 |
if isc_dsql_sql_info(StatusVector, @FHandle, 1, @info_request,
|
2262 |
SizeOf(result_buffer), result_buffer) > 0 then
|
2263 |
IBDatabaseError;
|
2264 |
if (result_buffer[0] <> Char(isc_info_sql_records)) then
|
2265 |
result := -1
|
2266 |
else
|
2267 |
case SQLType of
|
2268 |
SQLUpdate: Result := isc_vax_integer(@result_buffer[6], 4);
|
2269 |
SQLDelete: Result := isc_vax_integer(@result_buffer[13], 4);
|
2270 |
SQLInsert: Result := isc_vax_integer(@result_buffer[27], 4);
|
2271 |
else Result := -1 ;
|
2272 |
end ;
|
2273 |
end;
|
2274 |
end;
|
2275 |
|
2276 |
function TIBSQL.GetSQLParams: TIBXSQLDA;
|
2277 |
begin
|
2278 |
if not Prepared then
|
2279 |
Prepare;
|
2280 |
result := FSQLParams;
|
2281 |
end;
|
2282 |
|
2283 |
function TIBSQL.GetTransaction: TIBTransaction;
|
2284 |
begin
|
2285 |
result := FBase.Transaction;
|
2286 |
end;
|
2287 |
|
2288 |
function TIBSQL.GetTRHandle: PISC_TR_HANDLE;
|
2289 |
begin
|
2290 |
result := FBase.TRHandle;
|
2291 |
end;
|
2292 |
|
2293 |
{
|
2294 |
Preprocess SQL
|
2295 |
Using FSQL, process the typed SQL and put the process SQL
|
2296 |
in FProcessedSQL and parameter names in FSQLParams
|
2297 |
}
|
2298 |
procedure TIBSQL.PreprocessSQL;
|
2299 |
var
|
2300 |
cCurChar, cNextChar, cQuoteChar: Char;
|
2301 |
sSQL, sProcessedSQL, sParamName: String;
|
2302 |
i, iLenSQL, iSQLPos: Integer;
|
2303 |
iCurState, iCurParamState: Integer;
|
2304 |
iParamSuffix: Integer;
|
2305 |
slNames: TStrings;
|
2306 |
|
2307 |
const
|
2308 |
DefaultState = 0;
|
2309 |
CommentState = 1;
|
2310 |
QuoteState = 2;
|
2311 |
ParamState = 3;
|
2312 |
ParamDefaultState = 0;
|
2313 |
ParamQuoteState = 1;
|
2314 |
|
2315 |
procedure AddToProcessedSQL(cChar: Char);
|
2316 |
begin
|
2317 |
sProcessedSQL[iSQLPos] := cChar;
|
2318 |
Inc(iSQLPos);
|
2319 |
end;
|
2320 |
|
2321 |
begin
|
2322 |
slNames := TStringList.Create;
|
2323 |
try
|
2324 |
{ Do some initializations of variables }
|
2325 |
iParamSuffix := 0;
|
2326 |
cQuoteChar := '''';
|
2327 |
sSQL := FSQL.Text;
|
2328 |
iLenSQL := Length(sSQL);
|
2329 |
SetString(sProcessedSQL, nil, iLenSQL + 1);
|
2330 |
i := 1;
|
2331 |
iSQLPos := 1;
|
2332 |
iCurState := DefaultState;
|
2333 |
iCurParamState := ParamDefaultState;
|
2334 |
{ Now, traverse through the SQL string, character by character,
|
2335 |
picking out the parameters and formatting correctly for InterBase }
|
2336 |
while (i <= iLenSQL) do begin
|
2337 |
{ Get the current token and a look-ahead }
|
2338 |
cCurChar := sSQL[i];
|
2339 |
if i = iLenSQL then
|
2340 |
cNextChar := #0
|
2341 |
else
|
2342 |
cNextChar := sSQL[i + 1];
|
2343 |
{ Now act based on the current state }
|
2344 |
case iCurState of
|
2345 |
DefaultState: begin
|
2346 |
case cCurChar of
|
2347 |
'''', '"': begin
|
2348 |
cQuoteChar := cCurChar;
|
2349 |
iCurState := QuoteState;
|
2350 |
end;
|
2351 |
'?', ':': begin
|
2352 |
iCurState := ParamState;
|
2353 |
AddToProcessedSQL('?');
|
2354 |
end;
|
2355 |
'/': if (cNextChar = '*') then begin
|
2356 |
AddToProcessedSQL(cCurChar);
|
2357 |
Inc(i);
|
2358 |
iCurState := CommentState;
|
2359 |
end;
|
2360 |
end;
|
2361 |
end;
|
2362 |
CommentState: begin
|
2363 |
if (cNextChar = #0) then
|
2364 |
IBError(ibxeSQLParseError, [SEOFInComment])
|
2365 |
else if (cCurChar = '*') then begin
|
2366 |
if (cNextChar = '/') then
|
2367 |
iCurState := DefaultState;
|
2368 |
end;
|
2369 |
end;
|
2370 |
QuoteState: begin
|
2371 |
if cNextChar = #0 then
|
2372 |
IBError(ibxeSQLParseError, [SEOFInString])
|
2373 |
else if (cCurChar = cQuoteChar) then begin
|
2374 |
if (cNextChar = cQuoteChar) then begin
|
2375 |
AddToProcessedSQL(cCurChar);
|
2376 |
Inc(i);
|
2377 |
end else
|
2378 |
iCurState := DefaultState;
|
2379 |
end;
|
2380 |
end;
|
2381 |
ParamState:
|
2382 |
begin
|
2383 |
{ collect the name of the parameter }
|
2384 |
if iCurParamState = ParamDefaultState then
|
2385 |
begin
|
2386 |
if cCurChar = '"' then
|
2387 |
iCurParamState := ParamQuoteState
|
2388 |
else if (cCurChar in ['A'..'Z', 'a'..'z', '0'..'9', '_', '$']) then
|
2389 |
sParamName := sParamName + cCurChar
|
2390 |
else if FGenerateParamNames then
|
2391 |
begin
|
2392 |
sParamName := 'IBXParam' + IntToStr(iParamSuffix); {do not localize}
|
2393 |
Inc(iParamSuffix);
|
2394 |
iCurState := DefaultState;
|
2395 |
slNames.Add(sParamName);
|
2396 |
sParamName := '';
|
2397 |
end
|
2398 |
else
|
2399 |
IBError(ibxeSQLParseError, [SParamNameExpected]);
|
2400 |
end
|
2401 |
else begin
|
2402 |
{ determine if Quoted parameter name is finished }
|
2403 |
if cCurChar = '"' then
|
2404 |
begin
|
2405 |
Inc(i);
|
2406 |
slNames.Add(sParamName);
|
2407 |
SParamName := '';
|
2408 |
iCurParamState := ParamDefaultState;
|
2409 |
iCurState := DefaultState;
|
2410 |
end
|
2411 |
else
|
2412 |
sParamName := sParamName + cCurChar
|
2413 |
end;
|
2414 |
{ determine if the unquoted parameter name is finished }
|
2415 |
if (iCurParamState <> ParamQuoteState) and
|
2416 |
(iCurState <> DefaultState) then
|
2417 |
begin
|
2418 |
if not (cNextChar in ['A'..'Z', 'a'..'z',
|
2419 |
'0'..'9', '_', '$']) then begin
|
2420 |
Inc(i);
|
2421 |
iCurState := DefaultState;
|
2422 |
slNames.Add(sParamName);
|
2423 |
sParamName := '';
|
2424 |
end;
|
2425 |
end;
|
2426 |
end;
|
2427 |
end;
|
2428 |
if iCurState <> ParamState then
|
2429 |
AddToProcessedSQL(sSQL[i]);
|
2430 |
Inc(i);
|
2431 |
end;
|
2432 |
AddToProcessedSQL(#0);
|
2433 |
FSQLParams.Count := slNames.Count;
|
2434 |
for i := 0 to slNames.Count - 1 do
|
2435 |
FSQLParams.AddName(slNames[i], i);
|
2436 |
FProcessedSQL.Text := sProcessedSQL;
|
2437 |
finally
|
2438 |
slNames.Free;
|
2439 |
end;
|
2440 |
end;
|
2441 |
|
2442 |
procedure TIBSQL.SetDatabase(Value: TIBDatabase);
|
2443 |
begin
|
2444 |
FBase.Database := Value;
|
2445 |
end;
|
2446 |
|
2447 |
procedure TIBSQL.Prepare;
|
2448 |
var
|
2449 |
stmt_len: Integer;
|
2450 |
res_buffer: array[0..7] of Char;
|
2451 |
type_item: Char;
|
2452 |
begin
|
2453 |
CheckClosed;
|
2454 |
FBase.CheckDatabase;
|
2455 |
FBase.CheckTransaction;
|
2456 |
if FPrepared then
|
2457 |
exit;
|
2458 |
if (FSQL.Text = '') then
|
2459 |
IBError(ibxeEmptyQuery, [nil]);
|
2460 |
if not ParamCheck then
|
2461 |
FProcessedSQL.Text := FSQL.Text
|
2462 |
else
|
2463 |
PreprocessSQL;
|
2464 |
if (FProcessedSQL.Text = '') then
|
2465 |
IBError(ibxeEmptyQuery, [nil]);
|
2466 |
try
|
2467 |
Call(isc_dsql_alloc_statement2(StatusVector, DBHandle,
|
2468 |
@FHandle), True);
|
2469 |
Call(isc_dsql_prepare(StatusVector, TRHandle, @FHandle, 0,
|
2470 |
PChar(FProcessedSQL.Text), Database.SQLDialect, nil), True);
|
2471 |
{ After preparing the statement, query the stmt type and possibly
|
2472 |
create a FSQLRecord "holder" }
|
2473 |
{ Get the type of the statement }
|
2474 |
type_item := Char(isc_info_sql_stmt_type);
|
2475 |
Call(isc_dsql_sql_info(StatusVector, @FHandle, 1, @type_item,
|
2476 |
SizeOf(res_buffer), res_buffer), True);
|
2477 |
if (res_buffer[0] <> Char(isc_info_sql_stmt_type)) then
|
2478 |
IBError(ibxeUnknownError, [nil]);
|
2479 |
stmt_len := isc_vax_integer(@res_buffer[1], 2);
|
2480 |
FSQLType := TIBSQLTypes(isc_vax_integer(@res_buffer[3], stmt_len));
|
2481 |
{ Done getting the type }
|
2482 |
case FSQLType of
|
2483 |
SQLGetSegment,
|
2484 |
SQLPutSegment,
|
2485 |
SQLStartTransaction: begin
|
2486 |
FreeHandle;
|
2487 |
IBError(ibxeNotPermitted, [nil]);
|
2488 |
end;
|
2489 |
SQLCommit,
|
2490 |
SQLRollback,
|
2491 |
SQLDDL, SQLSetGenerator,
|
2492 |
SQLInsert, SQLUpdate, SQLDelete, SQLSelect, SQLSelectForUpdate,
|
2493 |
SQLExecProcedure: begin
|
2494 |
{ We already know how many inputs there are, so... }
|
2495 |
if (FSQLParams.FXSQLDA <> nil) and
|
2496 |
(Call(isc_dsql_describe_bind(StatusVector, @FHandle, Database.SQLDialect,
|
2497 |
FSQLParams.FXSQLDA), False) > 0) then
|
2498 |
IBDataBaseError;
|
2499 |
FSQLParams.Initialize;
|
2500 |
if FSQLType in [SQLSelect, SQLSelectForUpdate,
|
2501 |
SQLExecProcedure] then begin
|
2502 |
{ Allocate an initial output descriptor (with one column) }
|
2503 |
FSQLRecord.Count := 1;
|
2504 |
{ Using isc_dsql_describe, get the right size for the columns... }
|
2505 |
Call(isc_dsql_describe(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.FXSQLDA), True);
|
2506 |
if FSQLRecord.FXSQLDA^.sqld > FSQLRecord.FXSQLDA^.sqln then begin
|
2507 |
FSQLRecord.Count := FSQLRecord.FXSQLDA^.sqld;
|
2508 |
Call(isc_dsql_describe(StatusVector, @FHandle, Database.SQLDialect, FSQLRecord.FXSQLDA), True);
|
2509 |
end else if FSQLRecord.FXSQLDA^.sqld = 0 then
|
2510 |
FSQLRecord.Count := 0;
|
2511 |
FSQLRecord.Initialize;
|
2512 |
end;
|
2513 |
end;
|
2514 |
end;
|
2515 |
FPrepared := True;
|
2516 |
if not (csDesigning in ComponentState) then
|
2517 |
MonitorHook.SQLPrepare(Self);
|
2518 |
except
|
2519 |
on E: Exception do begin
|
2520 |
if (FHandle <> nil) then
|
2521 |
FreeHandle;
|
2522 |
raise;
|
2523 |
end;
|
2524 |
end;
|
2525 |
end;
|
2526 |
|
2527 |
function TIBSQL.GetUniqueRelationName: String;
|
2528 |
begin
|
2529 |
if FPrepared and (FSQLType = SQLSelect) then
|
2530 |
result := FSQLRecord.UniqueRelationName
|
2531 |
else
|
2532 |
result := '';
|
2533 |
end;
|
2534 |
|
2535 |
procedure TIBSQL.SetSQL(Value: TStrings);
|
2536 |
begin
|
2537 |
if FSQL.Text <> Value.Text then
|
2538 |
begin
|
2539 |
FSQL.BeginUpdate;
|
2540 |
try
|
2541 |
FSQL.Assign(Value);
|
2542 |
finally
|
2543 |
FSQL.EndUpdate;
|
2544 |
end;
|
2545 |
end;
|
2546 |
end;
|
2547 |
|
2548 |
procedure TIBSQL.SetTransaction(Value: TIBTransaction);
|
2549 |
begin
|
2550 |
FBase.Transaction := Value;
|
2551 |
end;
|
2552 |
|
2553 |
procedure TIBSQL.SQLChanging(Sender: TObject);
|
2554 |
begin
|
2555 |
if Assigned(OnSQLChanging) then
|
2556 |
OnSQLChanging(Self);
|
2557 |
if FHandle <> nil then FreeHandle;
|
2558 |
end;
|
2559 |
|
2560 |
procedure TIBSQL.BeforeTransactionEnd(Sender: TObject);
|
2561 |
begin
|
2562 |
if (FOpen) then
|
2563 |
Close;
|
2564 |
end;
|
2565 |
|
2566 |
end.
|