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(*
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* Firebird Interface (fbintf). The fbintf components provide a set of
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* Pascal language bindings for the Firebird API. Although predominantly
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* a new development they include source code taken from IBX and may be
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* considered a derived product. This software thus also includes the copyright
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* notice and license conditions from IBX.
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*
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* Except for those parts dervied from IBX, contents of this file are subject
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* to the Initial Developer's Public License Version 1.0 (the "License"); you
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* may not use this file except in compliance with the License. You may obtain a
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* copy of the License here:
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*
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* http://www.firebirdsql.org/index.php?op=doc&id=idpl
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing rights
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* and limitations under the License.
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*
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* The Initial Developer of the Original Code is Tony Whyman.
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*
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* The Original Code is (C) 2016 Tony Whyman, MWA Software
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* (http://www.mwasoftware.co.uk).
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*
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* All Rights Reserved.
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*
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* Contributor(s): ______________________________________.
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*
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*)
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{************************************************************************}
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{ }
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{ Borland Delphi Visual Component Library }
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{ InterBase Express core components }
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{ }
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{ Copyright (c) 1998-2000 Inprise Corporation }
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{ }
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{ InterBase Express is based in part on the product }
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{ Free IB Components, written by Gregory H. Deatz for }
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{ Hoagland, Longo, Moran, Dunst & Doukas Company. }
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{ Free IB Components is used under license. }
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{ }
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{ The contents of this file are subject to the InterBase }
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{ Public License Version 1.0 (the "License"); you may not }
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{ use this file except in compliance with the License. You }
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{ may obtain a copy of the License at http://www.Inprise.com/IPL.html }
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{ Software distributed under the License is distributed on }
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{ an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either }
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{ express or implied. See the License for the specific language }
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{ governing rights and limitations under the License. }
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{ The Original Code was created by InterBase Software Corporation }
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{ and its successors. }
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{ Portions created by Inprise Corporation are Copyright (C) Inprise }
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{ Corporation. All Rights Reserved. }
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{ Contributor(s): Jeff Overcash }
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{ }
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{ IBX For Lazarus (Firebird Express) }
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{ Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk }
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{ Portions created by MWA Software are copyright McCallum Whyman }
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{ Associates Ltd 2011 - 2015 }
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{ }
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{************************************************************************}
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unit FBSQLData;
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{$IFDEF MSWINDOWS}
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{$DEFINE WINDOWS}
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{$ENDIF}
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{$IFDEF FPC}
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{$mode delphi}
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{$codepage UTF8}
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{$interfaces COM}
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{$ENDIF}
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{ This Unit was hacked out of the IBSQL unit and defines a class used as the
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base for interfaces accessing SQLDAVar data and Array Elements. The abstract
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methods are used to customise for an SQLDAVar or Array Element. The empty
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methods are needed for SQL parameters only. The string getters and setters
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are virtual as SQLVar and Array encodings of string data is different.}
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{ $define ALLOWDIALECT3PARAMNAMES}
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{$ifndef ALLOWDIALECT3PARAMNAMES}
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{ Note on SQL Dialects and SQL Parameter Names
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--------------------------------------------
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Even when dialect 3 quoted format parameter names are not supported, IBX still processes
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parameter names case insensitive. This does result in some additional overhead
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due to a call to "AnsiUpperCase". This can be avoided by undefining
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"UseCaseInSensitiveParamName" below.
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Note: do not define "UseCaseSensitiveParamName" when "ALLOWDIALECT3PARAMNAMES"
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is defined. This will not give a useful result.
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}
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{$define UseCaseInSensitiveParamName}
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{$endif}
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interface
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uses
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Classes, SysUtils, IBExternals, IBHeader, IB, FBActivityMonitor;
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type
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{ TSQLDataItem }
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TSQLDataItem = class(TFBInterfacedObject)
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private
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function AdjustScale(Value: Int64; aScale: Integer): Double;
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function AdjustScaleToInt64(Value: Int64; aScale: Integer): Int64;
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function AdjustScaleToCurrency(Value: Int64; aScale: Integer): Currency;
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procedure SetAsInteger(AValue: Integer);
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protected
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function AdjustScaleFromCurrency(Value: Currency; aScale: Integer): Int64;
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function AdjustScaleFromDouble(Value: Double; aScale: Integer): Int64;
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procedure CheckActive; virtual;
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function GetSQLDialect: integer; virtual; abstract;
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procedure Changed; virtual;
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procedure Changing; virtual;
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procedure InternalSetAsString(Value: AnsiString); virtual;
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function SQLData: PByte; virtual; abstract;
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function GetDataLength: cardinal; virtual; abstract;
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function GetCodePage: TSystemCodePage; virtual; abstract;
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function getCharSetID: cardinal; virtual; abstract;
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function Transliterate(s: AnsiString; CodePage: TSystemCodePage): RawByteString;
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procedure SetScale(aValue: integer); virtual;
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procedure SetDataLength(len: cardinal); virtual;
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procedure SetSQLType(aValue: cardinal); virtual;
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property DataLength: cardinal read GetDataLength write SetDataLength;
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public
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function GetSQLType: cardinal; virtual; abstract;
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function GetSQLTypeName: AnsiString; overload;
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class function GetSQLTypeName(SQLType: short): AnsiString; overload;
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function GetName: AnsiString; virtual; abstract;
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function GetScale: integer; virtual; abstract;
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function GetAsBoolean: boolean;
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function GetAsCurrency: Currency;
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function GetAsInt64: Int64;
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function GetAsDateTime: TDateTime;
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function GetAsDouble: Double;
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function GetAsFloat: Float;
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function GetAsLong: Long;
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function GetAsPointer: Pointer;
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function GetAsQuad: TISC_QUAD;
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function GetAsShort: short;
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function GetAsString: AnsiString; virtual;
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function GetIsNull: Boolean; virtual;
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function getIsNullable: boolean; virtual;
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function GetAsVariant: Variant;
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function GetModified: boolean; virtual;
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procedure SetAsBoolean(AValue: boolean); virtual;
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procedure SetAsCurrency(Value: Currency); virtual;
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procedure SetAsInt64(Value: Int64); virtual;
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procedure SetAsDate(Value: TDateTime); virtual;
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procedure SetAsLong(Value: Long); virtual;
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procedure SetAsTime(Value: TDateTime); virtual;
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procedure SetAsDateTime(Value: TDateTime);
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procedure SetAsDouble(Value: Double); virtual;
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procedure SetAsFloat(Value: Float); virtual;
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procedure SetAsPointer(Value: Pointer);
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procedure SetAsQuad(Value: TISC_QUAD);
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procedure SetAsShort(Value: short); virtual;
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procedure SetAsString(Value: AnsiString); virtual;
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procedure SetAsVariant(Value: Variant);
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procedure SetAsNumeric(Value: Int64; aScale: integer);
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procedure SetIsNull(Value: Boolean); virtual;
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procedure SetIsNullable(Value: Boolean); virtual;
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procedure SetName(aValue: AnsiString); virtual;
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property AsDate: TDateTime read GetAsDateTime write SetAsDate;
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property AsBoolean:boolean read GetAsBoolean write SetAsBoolean;
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property AsTime: TDateTime read GetAsDateTime write SetAsTime;
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property AsDateTime: TDateTime read GetAsDateTime write SetAsDateTime;
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property AsDouble: Double read GetAsDouble write SetAsDouble;
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property AsFloat: Float read GetAsFloat write SetAsFloat;
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property AsCurrency: Currency read GetAsCurrency write SetAsCurrency;
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property AsInt64: Int64 read GetAsInt64 write SetAsInt64;
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property AsInteger: Integer read GetAsLong write SetAsInteger;
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property AsLong: Long read GetAsLong write SetAsLong;
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property AsPointer: Pointer read GetAsPointer write SetAsPointer;
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property AsQuad: TISC_QUAD read GetAsQuad write SetAsQuad;
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property AsShort: short read GetAsShort write SetAsShort;
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property AsString: AnsiString read GetAsString write SetAsString;
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property AsVariant: Variant read GetAsVariant write SetAsVariant;
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property Modified: Boolean read getModified;
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property IsNull: Boolean read GetIsNull write SetIsNull;
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property IsNullable: Boolean read GetIsNullable write SetIsNullable;
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property Scale: integer read GetScale write SetScale;
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property SQLType: cardinal read GetSQLType write SetSQLType;
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end;
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TSQLVarData = class;
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TStatementStatus = (ssPrepared, ssExecuteResults, ssCursorOpen, ssBOF, ssEOF);
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{ TSQLDataArea }
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TSQLDataArea = class
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private
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function GetColumn(index: integer): TSQLVarData;
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function GetCount: integer;
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protected
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FUniqueRelationName: AnsiString;
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FColumnList: array of TSQLVarData;
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function GetStatement: IStatement; virtual; abstract;
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function GetPrepareSeqNo: integer; virtual; abstract;
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function GetTransactionSeqNo: integer; virtual; abstract;
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procedure SetCount(aValue: integer); virtual; abstract;
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procedure SetUniqueRelationName;
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public
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procedure Initialize; virtual;
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function IsInputDataArea: boolean; virtual; abstract; {Input to Database}
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procedure PreprocessSQL(sSQL: AnsiString; GenerateParamNames: boolean;
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var sProcessedSQL: AnsiString);
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function ColumnsInUseCount: integer; virtual;
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function ColumnByName(Idx: AnsiString): TSQLVarData;
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function CheckStatementStatus(Request: TStatementStatus): boolean; virtual; abstract;
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procedure GetData(index: integer; var IsNull: boolean; var len: short;
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var data: PByte); virtual;
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procedure RowChange;
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function StateChanged(var ChangeSeqNo: integer): boolean; virtual; abstract;
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property Count: integer read GetCount;
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property Column[index: integer]: TSQLVarData read GetColumn;
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property UniqueRelationName: AnsiString read FUniqueRelationName;
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property Statement: IStatement read GetStatement;
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property PrepareSeqNo: integer read GetPrepareSeqNo;
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property TransactionSeqNo: integer read GetTransactionSeqNo;
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end;
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{ TSQLVarData }
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TSQLVarData = class
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private
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FParent: TSQLDataArea;
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FName: AnsiString;
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FIndex: integer;
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FModified: boolean;
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FUniqueName: boolean;
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FVarString: RawByteString;
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function GetStatement: IStatement;
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procedure SetName(AValue: AnsiString);
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protected
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function GetSQLType: cardinal; virtual; abstract;
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function GetSubtype: integer; virtual; abstract;
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function GetAliasName: AnsiString; virtual; abstract;
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function GetFieldName: AnsiString; virtual; abstract;
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function GetOwnerName: AnsiString; virtual; abstract;
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function GetRelationName: AnsiString; virtual; abstract;
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function GetScale: integer; virtual; abstract;
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function GetCharSetID: cardinal; virtual; abstract;
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function GetCodePage: TSystemCodePage; virtual; abstract;
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function GetIsNull: Boolean; virtual; abstract;
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function GetIsNullable: boolean; virtual; abstract;
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function GetSQLData: PByte; virtual; abstract;
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function GetDataLength: cardinal; virtual; abstract;
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procedure SetIsNull(Value: Boolean); virtual; abstract;
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procedure SetIsNullable(Value: Boolean); virtual; abstract;
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procedure SetSQLData(AValue: PByte; len: cardinal); virtual; abstract;
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procedure SetScale(aValue: integer); virtual; abstract;
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procedure SetDataLength(len: cardinal); virtual; abstract;
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procedure SetSQLType(aValue: cardinal); virtual; abstract;
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procedure SetCharSetID(aValue: cardinal); virtual; abstract;
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public
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constructor Create(aParent: TSQLDataArea; aIndex: integer);
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procedure SetString(aValue: AnsiString);
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procedure Changed; virtual;
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procedure RowChange; virtual;
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function GetAsArray(Array_ID: TISC_QUAD): IArray; virtual; abstract;
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function GetAsBlob(Blob_ID: TISC_QUAD; BPB: IBPB): IBlob; virtual; abstract;
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function CreateBlob: IBlob; virtual; abstract;
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function GetArrayMetaData: IArrayMetaData; virtual; abstract;
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function GetBlobMetaData: IBlobMetaData; virtual; abstract;
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procedure Initialize; virtual;
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public
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property AliasName: AnsiString read GetAliasName;
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property FieldName: AnsiString read GetFieldName;
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property OwnerName: AnsiString read GetOwnerName;
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property RelationName: AnsiString read GetRelationName;
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property Parent: TSQLDataArea read FParent;
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property Index: integer read FIndex;
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property Name: AnsiString read FName write SetName;
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property CharSetID: cardinal read GetCharSetID write SetCharSetID;
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property SQLType: cardinal read GetSQLType write SetSQLType;
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property SQLSubtype: integer read GetSubtype;
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property SQLData: PByte read GetSQLData;
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property DataLength: cardinal read GetDataLength write SetDataLength;
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property IsNull: Boolean read GetIsNull write SetIsNull;
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property IsNullable: Boolean read GetIsNullable write SetIsNullable;
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property Scale: integer read GetScale write SetScale;
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public
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property Modified: Boolean read FModified;
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property Statement: IStatement read GetStatement;
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property UniqueName: boolean read FUniqueName write FUniqueName;
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end;
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{ TColumnMetaData }
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TColumnMetaData = class(TSQLDataItem,IColumnMetaData)
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private
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FIBXSQLVAR: TSQLVarData;
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FOwner: IUnknown; {Keep reference to ensure Metadata/statement not discarded}
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FPrepareSeqNo: integer;
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FStatement: IStatement;
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FChangeSeqNo: integer;
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protected
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procedure CheckActive; override;
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function SQLData: PByte; override;
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function GetDataLength: cardinal; override;
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function GetCodePage: TSystemCodePage; override;
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310 |
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311 |
public
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constructor Create(aOwner: IUnknown; aIBXSQLVAR: TSQLVarData);
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destructor Destroy; override;
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function GetSQLDialect: integer; override;
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property Statement: IStatement read FStatement;
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316 |
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public
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{IColumnMetaData}
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function GetIndex: integer;
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function GetSQLType: cardinal; override;
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function getSubtype: integer;
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function getRelationName: AnsiString;
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function getOwnerName: AnsiString;
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function getSQLName: AnsiString; {Name of the column}
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function getAliasName: AnsiString; {Alias Name of column or Column Name if not alias}
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function GetName: AnsiString; override; {Disambiguated uppercase Field Name}
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function GetScale: integer; override;
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328 |
function getCharSetID: cardinal; override;
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329 |
function GetIsNullable: boolean; override;
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330 |
function GetSize: cardinal;
|
331 |
function GetArrayMetaData: IArrayMetaData;
|
332 |
function GetBlobMetaData: IBlobMetaData;
|
333 |
property Name: AnsiString read GetName;
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334 |
property Size: cardinal read GetSize;
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335 |
property CharSetID: cardinal read getCharSetID;
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336 |
property SQLSubtype: integer read getSubtype;
|
337 |
property IsNullable: Boolean read GetIsNullable;
|
338 |
end;
|
339 |
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{ TIBSQLData }
|
341 |
|
342 |
TIBSQLData = class(TColumnMetaData,ISQLData)
|
343 |
protected
|
344 |
procedure CheckActive; override;
|
345 |
public
|
346 |
function GetIsNull: Boolean; override;
|
347 |
function GetAsArray: IArray;
|
348 |
function GetAsBlob: IBlob; overload;
|
349 |
function GetAsBlob(BPB: IBPB): IBlob; overload;
|
350 |
function GetAsString: AnsiString; override;
|
351 |
property AsBlob: IBlob read GetAsBlob;
|
352 |
end;
|
353 |
|
354 |
{ TSQLParam }
|
355 |
|
356 |
TSQLParam = class(TIBSQLData,ISQLParam)
|
357 |
protected
|
358 |
procedure CheckActive; override;
|
359 |
procedure Changed; override;
|
360 |
procedure InternalSetAsString(Value: AnsiString); override;
|
361 |
procedure SetScale(aValue: integer); override;
|
362 |
procedure SetDataLength(len: cardinal); override;
|
363 |
procedure SetSQLType(aValue: cardinal); override;
|
364 |
public
|
365 |
procedure Clear;
|
366 |
function GetModified: boolean; override;
|
367 |
function GetAsPointer: Pointer;
|
368 |
procedure SetName(Value: AnsiString); override;
|
369 |
procedure SetIsNull(Value: Boolean); override;
|
370 |
procedure SetIsNullable(Value: Boolean); override;
|
371 |
procedure SetAsArray(anArray: IArray);
|
372 |
|
373 |
{overrides}
|
374 |
procedure SetAsBoolean(AValue: boolean);
|
375 |
procedure SetAsCurrency(AValue: Currency);
|
376 |
procedure SetAsInt64(AValue: Int64);
|
377 |
procedure SetAsDate(AValue: TDateTime);
|
378 |
procedure SetAsLong(AValue: Long);
|
379 |
procedure SetAsTime(AValue: TDateTime);
|
380 |
procedure SetAsDateTime(AValue: TDateTime);
|
381 |
procedure SetAsDouble(AValue: Double);
|
382 |
procedure SetAsFloat(AValue: Float);
|
383 |
procedure SetAsPointer(AValue: Pointer);
|
384 |
procedure SetAsShort(AValue: Short);
|
385 |
procedure SetAsString(AValue: AnsiString); override;
|
386 |
procedure SetAsVariant(AValue: Variant);
|
387 |
procedure SetAsBlob(aValue: IBlob);
|
388 |
procedure SetAsQuad(AValue: TISC_QUAD);
|
389 |
procedure SetCharSetID(aValue: cardinal);
|
390 |
|
391 |
property AsBlob: IBlob read GetAsBlob write SetAsBlob;
|
392 |
property IsNullable: Boolean read GetIsNullable write SetIsNullable;
|
393 |
end;
|
394 |
|
395 |
{ TMetaData }
|
396 |
|
397 |
TMetaData = class(TInterfaceOwner,IMetaData)
|
398 |
private
|
399 |
FPrepareSeqNo: integer;
|
400 |
FMetaData: TSQLDataArea;
|
401 |
FStatement: IStatement; {ensure FStatement not destroyed until no longer needed}
|
402 |
procedure CheckActive;
|
403 |
public
|
404 |
constructor Create(aMetaData: TSQLDataArea);
|
405 |
destructor Destroy; override;
|
406 |
public
|
407 |
{IMetaData}
|
408 |
function GetUniqueRelationName: AnsiString;
|
409 |
function getCount: integer;
|
410 |
function getColumnMetaData(index: integer): IColumnMetaData;
|
411 |
function ByName(Idx: AnsiString): IColumnMetaData;
|
412 |
end;
|
413 |
|
414 |
{ TSQLParams }
|
415 |
|
416 |
TSQLParams = class(TInterfaceOwner,ISQLParams)
|
417 |
private
|
418 |
FPrepareSeqNo: integer;
|
419 |
FChangeSeqNo: integer;
|
420 |
FSQLParams: TSQLDataArea;
|
421 |
FStatement: IStatement; {ensure FStatement not destroyed until no longer needed}
|
422 |
procedure CheckActive;
|
423 |
public
|
424 |
constructor Create(aSQLParams: TSQLDataArea);
|
425 |
destructor Destroy; override;
|
426 |
public
|
427 |
{ISQLParams}
|
428 |
function getCount: integer;
|
429 |
function getSQLParam(index: integer): ISQLParam;
|
430 |
function ByName(Idx: AnsiString): ISQLParam ;
|
431 |
function GetModified: Boolean;
|
432 |
end;
|
433 |
|
434 |
{ TResults }
|
435 |
|
436 |
TResults = class(TInterfaceOwner,IResults)
|
437 |
private
|
438 |
FPrepareSeqNo: integer;
|
439 |
FTransactionSeqNo: integer;
|
440 |
FChangeSeqNo: integer;
|
441 |
FResults: TSQLDataArea;
|
442 |
FStatement: IStatement; {ensure FStatement not destroyed until no longer needed}
|
443 |
function GetISQLData(aIBXSQLVAR: TSQLVarData): ISQLData;
|
444 |
protected
|
445 |
procedure CheckActive;
|
446 |
public
|
447 |
constructor Create(aResults: TSQLDataArea);
|
448 |
{IResults}
|
449 |
function getCount: integer;
|
450 |
function ByName(Idx: AnsiString): ISQLData;
|
451 |
function getSQLData(index: integer): ISQLData;
|
452 |
procedure GetData(index: integer; var IsNull:boolean; var len: short; var data: PByte);
|
453 |
function GetTransaction: ITransaction; virtual;
|
454 |
procedure SetRetainInterfaces(aValue: boolean);
|
455 |
end;
|
456 |
|
457 |
implementation
|
458 |
|
459 |
uses FBMessages, FBClientAPI, variants, IBUtils, FBTransaction;
|
460 |
|
461 |
|
462 |
{ TSQLDataArea }
|
463 |
|
464 |
function TSQLDataArea.GetColumn(index: integer): TSQLVarData;
|
465 |
begin
|
466 |
if (index < 0) or (index >= Count) then
|
467 |
IBError(ibxeInvalidColumnIndex,[nil]);
|
468 |
Result := FColumnList[index];
|
469 |
end;
|
470 |
|
471 |
function TSQLDataArea.GetCount: integer;
|
472 |
begin
|
473 |
Result := Length(FColumnList);
|
474 |
end;
|
475 |
|
476 |
procedure TSQLDataArea.SetUniqueRelationName;
|
477 |
var
|
478 |
i: Integer;
|
479 |
bUnique: Boolean;
|
480 |
RelationName: AnsiString;
|
481 |
begin
|
482 |
bUnique := True;
|
483 |
for i := 0 to ColumnsInUseCount - 1 do
|
484 |
begin
|
485 |
RelationName := Column[i].RelationName;
|
486 |
|
487 |
{First get the unique relation name, if any}
|
488 |
|
489 |
if bUnique and (RelationName <> '') then
|
490 |
begin
|
491 |
if FUniqueRelationName = '' then
|
492 |
FUniqueRelationName := RelationName
|
493 |
else
|
494 |
if RelationName <> FUniqueRelationName then
|
495 |
begin
|
496 |
FUniqueRelationName := '';
|
497 |
bUnique := False;
|
498 |
end;
|
499 |
end;
|
500 |
end;
|
501 |
end;
|
502 |
|
503 |
procedure TSQLDataArea.Initialize;
|
504 |
var
|
505 |
i: Integer;
|
506 |
begin
|
507 |
for i := 0 to ColumnsInUseCount - 1 do
|
508 |
Column[i].Initialize;
|
509 |
end;
|
510 |
|
511 |
procedure TSQLDataArea.PreprocessSQL(sSQL: AnsiString; GenerateParamNames: boolean;
|
512 |
var sProcessedSQL: AnsiString);
|
513 |
var
|
514 |
cCurChar, cNextChar, cQuoteChar: AnsiChar;
|
515 |
sParamName: AnsiString;
|
516 |
j, i, iLenSQL, iSQLPos: Integer;
|
517 |
iCurState {$ifdef ALLOWDIALECT3PARAMNAMES}, iCurParamState {$endif}: Integer;
|
518 |
iParamSuffix: Integer;
|
519 |
slNames: TStrings;
|
520 |
StrBuffer: PByte;
|
521 |
found: boolean;
|
522 |
|
523 |
const
|
524 |
DefaultState = 0;
|
525 |
CommentState = 1;
|
526 |
QuoteState = 2;
|
527 |
ParamState = 3;
|
528 |
ArrayDimState = 4;
|
529 |
{$ifdef ALLOWDIALECT3PARAMNAMES}
|
530 |
ParamDefaultState = 0;
|
531 |
ParamQuoteState = 1;
|
532 |
{$endif}
|
533 |
|
534 |
procedure AddToProcessedSQL(cChar: AnsiChar);
|
535 |
begin
|
536 |
StrBuffer[iSQLPos] := byte(cChar);
|
537 |
Inc(iSQLPos);
|
538 |
end;
|
539 |
|
540 |
begin
|
541 |
if not IsInputDataArea then
|
542 |
IBError(ibxeNotPermitted,[nil]);
|
543 |
|
544 |
sParamName := '';
|
545 |
iLenSQL := Length(sSQL);
|
546 |
GetMem(StrBuffer,iLenSQL + 1);
|
547 |
slNames := TStringList.Create;
|
548 |
try
|
549 |
{ Do some initializations of variables }
|
550 |
iParamSuffix := 0;
|
551 |
cQuoteChar := '''';
|
552 |
i := 1;
|
553 |
iSQLPos := 0;
|
554 |
iCurState := DefaultState;
|
555 |
{$ifdef ALLOWDIALECT3PARAMNAMES}
|
556 |
iCurParamState := ParamDefaultState;
|
557 |
{$endif}
|
558 |
{ Now, traverse through the SQL string, character by character,
|
559 |
picking out the parameters and formatting correctly for InterBase }
|
560 |
while (i <= iLenSQL) do begin
|
561 |
{ Get the current token and a look-ahead }
|
562 |
cCurChar := sSQL[i];
|
563 |
if i = iLenSQL then
|
564 |
cNextChar := #0
|
565 |
else
|
566 |
cNextChar := sSQL[i + 1];
|
567 |
{ Now act based on the current state }
|
568 |
case iCurState of
|
569 |
DefaultState:
|
570 |
begin
|
571 |
case cCurChar of
|
572 |
'''', '"':
|
573 |
begin
|
574 |
cQuoteChar := cCurChar;
|
575 |
iCurState := QuoteState;
|
576 |
end;
|
577 |
'?', ':':
|
578 |
begin
|
579 |
iCurState := ParamState;
|
580 |
AddToProcessedSQL('?');
|
581 |
end;
|
582 |
'/': if (cNextChar = '*') then
|
583 |
begin
|
584 |
AddToProcessedSQL(cCurChar);
|
585 |
Inc(i);
|
586 |
iCurState := CommentState;
|
587 |
end;
|
588 |
'[':
|
589 |
begin
|
590 |
AddToProcessedSQL(cCurChar);
|
591 |
Inc(i);
|
592 |
iCurState := ArrayDimState;
|
593 |
end;
|
594 |
end;
|
595 |
end;
|
596 |
|
597 |
ArrayDimState:
|
598 |
begin
|
599 |
case cCurChar of
|
600 |
':',',','0'..'9',' ',#9,#10,#13:
|
601 |
begin
|
602 |
AddToProcessedSQL(cCurChar);
|
603 |
Inc(i);
|
604 |
end;
|
605 |
else
|
606 |
begin
|
607 |
AddToProcessedSQL(cCurChar);
|
608 |
Inc(i);
|
609 |
iCurState := DefaultState;
|
610 |
end;
|
611 |
end;
|
612 |
end;
|
613 |
|
614 |
CommentState:
|
615 |
begin
|
616 |
if (cNextChar = #0) then
|
617 |
IBError(ibxeSQLParseError, [SEOFInComment])
|
618 |
else if (cCurChar = '*') then begin
|
619 |
if (cNextChar = '/') then
|
620 |
iCurState := DefaultState;
|
621 |
end;
|
622 |
end;
|
623 |
QuoteState: begin
|
624 |
if cNextChar = #0 then
|
625 |
IBError(ibxeSQLParseError, [SEOFInString])
|
626 |
else if (cCurChar = cQuoteChar) then begin
|
627 |
if (cNextChar = cQuoteChar) then begin
|
628 |
AddToProcessedSQL(cCurChar);
|
629 |
Inc(i);
|
630 |
end else
|
631 |
iCurState := DefaultState;
|
632 |
end;
|
633 |
end;
|
634 |
ParamState:
|
635 |
begin
|
636 |
{ collect the name of the parameter }
|
637 |
{$ifdef ALLOWDIALECT3PARAMNAMES}
|
638 |
if iCurParamState = ParamDefaultState then
|
639 |
begin
|
640 |
if cCurChar = '"' then
|
641 |
iCurParamState := ParamQuoteState
|
642 |
else
|
643 |
{$endif}
|
644 |
if (cCurChar in ['A'..'Z', 'a'..'z', '0'..'9', '_', '$']) then
|
645 |
sParamName := sParamName + cCurChar
|
646 |
else if GenerateParamNames then
|
647 |
begin
|
648 |
sParamName := 'IBXParam' + IntToStr(iParamSuffix); {do not localize}
|
649 |
Inc(iParamSuffix);
|
650 |
iCurState := DefaultState;
|
651 |
slNames.AddObject(sParamName,self); //Note local convention
|
652 |
//add pointer to self to mark entry
|
653 |
sParamName := '';
|
654 |
end
|
655 |
else
|
656 |
IBError(ibxeSQLParseError, [SParamNameExpected]);
|
657 |
{$ifdef ALLOWDIALECT3PARAMNAMES}
|
658 |
end
|
659 |
else begin
|
660 |
{ determine if Quoted parameter name is finished }
|
661 |
if cCurChar = '"' then
|
662 |
begin
|
663 |
Inc(i);
|
664 |
slNames.Add(sParamName);
|
665 |
SParamName := '';
|
666 |
iCurParamState := ParamDefaultState;
|
667 |
iCurState := DefaultState;
|
668 |
end
|
669 |
else
|
670 |
sParamName := sParamName + cCurChar
|
671 |
end;
|
672 |
{$endif}
|
673 |
{ determine if the unquoted parameter name is finished }
|
674 |
if {$ifdef ALLOWDIALECT3PARAMNAMES}(iCurParamState <> ParamQuoteState) and {$endif}
|
675 |
(iCurState <> DefaultState) then
|
676 |
begin
|
677 |
if not (cNextChar in ['A'..'Z', 'a'..'z',
|
678 |
'0'..'9', '_', '$']) then begin
|
679 |
Inc(i);
|
680 |
iCurState := DefaultState;
|
681 |
slNames.Add(sParamName);
|
682 |
sParamName := '';
|
683 |
end;
|
684 |
end;
|
685 |
end;
|
686 |
end;
|
687 |
if (iCurState <> ParamState) and (i <= iLenSQL) then
|
688 |
AddToProcessedSQL(sSQL[i]);
|
689 |
Inc(i);
|
690 |
end;
|
691 |
AddToProcessedSQL(#0);
|
692 |
sProcessedSQL := strpas(PAnsiChar(StrBuffer));
|
693 |
SetCount(slNames.Count);
|
694 |
for i := 0 to slNames.Count - 1 do
|
695 |
begin
|
696 |
Column[i].Name := slNames[i];
|
697 |
Column[i].UniqueName := (slNames.Objects[i] <> nil);
|
698 |
end;
|
699 |
for i := 0 to Count - 1 do
|
700 |
begin
|
701 |
if not Column[i].UniqueName then
|
702 |
begin
|
703 |
found := false;
|
704 |
for j := i + 1 to Count - 1 do
|
705 |
if Column[i].Name = Column[j].Name then
|
706 |
begin
|
707 |
found := true;
|
708 |
break;
|
709 |
end;
|
710 |
Column[i].UniqueName := not found;
|
711 |
end;
|
712 |
end;
|
713 |
finally
|
714 |
slNames.Free;
|
715 |
FreeMem(StrBuffer);
|
716 |
end;
|
717 |
end;
|
718 |
|
719 |
function TSQLDataArea.ColumnsInUseCount: integer;
|
720 |
begin
|
721 |
Result := Count;
|
722 |
end;
|
723 |
|
724 |
function TSQLDataArea.ColumnByName(Idx: AnsiString): TSQLVarData;
|
725 |
var
|
726 |
s: AnsiString;
|
727 |
i: Integer;
|
728 |
begin
|
729 |
{$ifdef UseCaseInSensitiveParamName}
|
730 |
s := AnsiUpperCase(Idx);
|
731 |
{$else}
|
732 |
s := Idx;
|
733 |
{$endif}
|
734 |
for i := 0 to Count - 1 do
|
735 |
if Column[i].Name = s then
|
736 |
begin
|
737 |
Result := Column[i];
|
738 |
Exit;
|
739 |
end;
|
740 |
Result := nil;
|
741 |
end;
|
742 |
|
743 |
procedure TSQLDataArea.GetData(index: integer; var IsNull: boolean;
|
744 |
var len: short; var data: PByte);
|
745 |
begin
|
746 |
//Do Nothing
|
747 |
end;
|
748 |
|
749 |
procedure TSQLDataArea.RowChange;
|
750 |
var i: integer;
|
751 |
begin
|
752 |
for i := 0 to Count - 1 do
|
753 |
Column[i].RowChange;
|
754 |
end;
|
755 |
|
756 |
{TSQLVarData}
|
757 |
|
758 |
function TSQLVarData.GetStatement: IStatement;
|
759 |
begin
|
760 |
Result := FParent.Statement;
|
761 |
end;
|
762 |
|
763 |
procedure TSQLVarData.SetName(AValue: AnsiString);
|
764 |
begin
|
765 |
if FName = AValue then Exit;
|
766 |
{$ifdef UseCaseInSensitiveParamName}
|
767 |
if Parent.IsInputDataArea then
|
768 |
FName := AnsiUpperCase(AValue)
|
769 |
else
|
770 |
{$endif}
|
771 |
FName := AValue;
|
772 |
end;
|
773 |
|
774 |
constructor TSQLVarData.Create(aParent: TSQLDataArea; aIndex: integer);
|
775 |
begin
|
776 |
inherited Create;
|
777 |
FParent := aParent;
|
778 |
FIndex := aIndex;
|
779 |
FUniqueName := true;
|
780 |
end;
|
781 |
|
782 |
procedure TSQLVarData.SetString(aValue: AnsiString);
|
783 |
begin
|
784 |
{we take full advantage here of reference counted strings. When setting a string
|
785 |
value, a reference is kept in FVarString and a pointer to it placed in the
|
786 |
SQLVar. This avoids string copies. Note that PAnsiChar is guaranteed to point to
|
787 |
a zero byte when the string is empty, neatly avoiding a nil pointer error.}
|
788 |
|
789 |
FVarString := aValue;
|
790 |
SQLType := SQL_TEXT;
|
791 |
SetSQLData(PByte(PAnsiChar(FVarString)),Length(aValue));
|
792 |
end;
|
793 |
|
794 |
procedure TSQLVarData.Changed;
|
795 |
begin
|
796 |
FModified := true;
|
797 |
end;
|
798 |
|
799 |
procedure TSQLVarData.RowChange;
|
800 |
begin
|
801 |
FModified := false;
|
802 |
FVarString := '';
|
803 |
end;
|
804 |
|
805 |
procedure TSQLVarData.Initialize;
|
806 |
|
807 |
function FindVarByName(idx: AnsiString; limit: integer): TSQLVarData;
|
808 |
var
|
809 |
k: integer;
|
810 |
begin
|
811 |
for k := 0 to limit do
|
812 |
if Parent.Column[k].Name = idx then
|
813 |
begin
|
814 |
Result := Parent.Column[k];
|
815 |
Exit;
|
816 |
end;
|
817 |
Result := nil;
|
818 |
end;
|
819 |
|
820 |
var
|
821 |
j, j_len: Integer;
|
822 |
st: AnsiString;
|
823 |
sBaseName: AnsiString;
|
824 |
begin
|
825 |
RowChange;
|
826 |
|
827 |
{If an output SQLDA then copy the aliasname to the FName. Ensure
|
828 |
that they are all upper case only and disambiguated.
|
829 |
}
|
830 |
|
831 |
if not Parent.IsInputDataArea then
|
832 |
begin
|
833 |
st := Space2Underscore(AnsiUppercase(AliasName));
|
834 |
if st = '' then
|
835 |
begin
|
836 |
sBaseName := 'F_'; {do not localize}
|
837 |
j := 1; j_len := 1;
|
838 |
st := sBaseName + IntToStr(j);
|
839 |
end
|
840 |
else
|
841 |
begin
|
842 |
j := 0; j_len := 0;
|
843 |
sBaseName := st;
|
844 |
end;
|
845 |
|
846 |
{Look for other columns with the same name and make unique}
|
847 |
|
848 |
while FindVarByName(st,Index-1) <> nil do
|
849 |
begin
|
850 |
Inc(j);
|
851 |
j_len := Length(IntToStr(j));
|
852 |
if j_len + Length(sBaseName) > 31 then
|
853 |
st := system.Copy(sBaseName, 1, 31 - j_len) + IntToStr(j)
|
854 |
else
|
855 |
st := sBaseName + IntToStr(j);
|
856 |
end;
|
857 |
|
858 |
Name := st;
|
859 |
end;
|
860 |
end;
|
861 |
|
862 |
{TSQLDataItem}
|
863 |
|
864 |
function TSQLDataItem.AdjustScale(Value: Int64; aScale: Integer): Double;
|
865 |
var
|
866 |
Scaling : Int64;
|
867 |
i: Integer;
|
868 |
Val: Double;
|
869 |
begin
|
870 |
Scaling := 1; Val := Value;
|
871 |
if aScale > 0 then
|
872 |
begin
|
873 |
for i := 1 to aScale do
|
874 |
Scaling := Scaling * 10;
|
875 |
result := Val * Scaling;
|
876 |
end
|
877 |
else
|
878 |
if aScale < 0 then
|
879 |
begin
|
880 |
for i := -1 downto aScale do
|
881 |
Scaling := Scaling * 10;
|
882 |
result := Val / Scaling;
|
883 |
end
|
884 |
else
|
885 |
result := Val;
|
886 |
end;
|
887 |
|
888 |
function TSQLDataItem.AdjustScaleToInt64(Value: Int64; aScale: Integer): Int64;
|
889 |
var
|
890 |
Scaling : Int64;
|
891 |
i: Integer;
|
892 |
Val: Int64;
|
893 |
begin
|
894 |
Scaling := 1; Val := Value;
|
895 |
if aScale > 0 then begin
|
896 |
for i := 1 to aScale do Scaling := Scaling * 10;
|
897 |
result := Val * Scaling;
|
898 |
end else if aScale < 0 then begin
|
899 |
for i := -1 downto aScale do Scaling := Scaling * 10;
|
900 |
result := Val div Scaling;
|
901 |
end else
|
902 |
result := Val;
|
903 |
end;
|
904 |
|
905 |
function TSQLDataItem.AdjustScaleToCurrency(Value: Int64; aScale: Integer
|
906 |
): Currency;
|
907 |
var
|
908 |
Scaling : Int64;
|
909 |
i : Integer;
|
910 |
FractionText, PadText, CurrText: AnsiString;
|
911 |
begin
|
912 |
Result := 0;
|
913 |
Scaling := 1;
|
914 |
PadText := '';
|
915 |
if aScale > 0 then
|
916 |
begin
|
917 |
for i := 1 to aScale do
|
918 |
Scaling := Scaling * 10;
|
919 |
result := Value * Scaling;
|
920 |
end
|
921 |
else
|
922 |
if aScale < 0 then
|
923 |
begin
|
924 |
for i := -1 downto aScale do
|
925 |
Scaling := Scaling * 10;
|
926 |
FractionText := IntToStr(abs(Value mod Scaling));
|
927 |
for i := Length(FractionText) to -aScale -1 do
|
928 |
PadText := '0' + PadText;
|
929 |
{$IF declared(DefaultFormatSettings)}
|
930 |
with DefaultFormatSettings do
|
931 |
{$ELSE}
|
932 |
{$IF declared(FormatSettings)}
|
933 |
with FormatSettings do
|
934 |
{$IFEND}
|
935 |
{$IFEND}
|
936 |
if Value < 0 then
|
937 |
CurrText := '-' + IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText
|
938 |
else
|
939 |
CurrText := IntToStr(Abs(Value div Scaling)) + DecimalSeparator + PadText + FractionText;
|
940 |
try
|
941 |
result := StrToCurr(CurrText);
|
942 |
except
|
943 |
on E: Exception do
|
944 |
IBError(ibxeInvalidDataConversion, [nil]);
|
945 |
end;
|
946 |
end
|
947 |
else
|
948 |
result := Value;
|
949 |
end;
|
950 |
|
951 |
procedure TSQLDataItem.SetAsInteger(AValue: Integer);
|
952 |
begin
|
953 |
SetAsLong(aValue);
|
954 |
end;
|
955 |
|
956 |
function TSQLDataItem.AdjustScaleFromCurrency(Value: Currency; aScale: Integer
|
957 |
): Int64;
|
958 |
var
|
959 |
Scaling : Int64;
|
960 |
i : Integer;
|
961 |
begin
|
962 |
Result := 0;
|
963 |
Scaling := 1;
|
964 |
if aScale < 0 then
|
965 |
begin
|
966 |
for i := -1 downto aScale do
|
967 |
Scaling := Scaling * 10;
|
968 |
result := trunc(Value * Scaling);
|
969 |
end
|
970 |
else
|
971 |
if aScale > 0 then
|
972 |
begin
|
973 |
for i := 1 to aScale do
|
974 |
Scaling := Scaling * 10;
|
975 |
result := trunc(Value / Scaling);
|
976 |
end
|
977 |
else
|
978 |
result := trunc(Value);
|
979 |
end;
|
980 |
|
981 |
function TSQLDataItem.AdjustScaleFromDouble(Value: Double; aScale: Integer
|
982 |
): Int64;
|
983 |
var
|
984 |
Scaling : Int64;
|
985 |
i : Integer;
|
986 |
begin
|
987 |
Result := 0;
|
988 |
Scaling := 1;
|
989 |
if aScale < 0 then
|
990 |
begin
|
991 |
for i := -1 downto aScale do
|
992 |
Scaling := Scaling * 10;
|
993 |
result := trunc(Value * Scaling);
|
994 |
end
|
995 |
else
|
996 |
if aScale > 0 then
|
997 |
begin
|
998 |
for i := 1 to aScale do
|
999 |
Scaling := Scaling * 10;
|
1000 |
result := trunc(Value / Scaling);
|
1001 |
end
|
1002 |
else
|
1003 |
result := trunc(Value);
|
1004 |
end;
|
1005 |
|
1006 |
procedure TSQLDataItem.CheckActive;
|
1007 |
begin
|
1008 |
//Do nothing by default
|
1009 |
end;
|
1010 |
|
1011 |
procedure TSQLDataItem.Changed;
|
1012 |
begin
|
1013 |
//Do nothing by default
|
1014 |
end;
|
1015 |
|
1016 |
procedure TSQLDataItem.Changing;
|
1017 |
begin
|
1018 |
//Do nothing by default
|
1019 |
end;
|
1020 |
|
1021 |
procedure TSQLDataItem.InternalSetAsString(Value: AnsiString);
|
1022 |
begin
|
1023 |
//Do nothing by default
|
1024 |
end;
|
1025 |
|
1026 |
function TSQLDataItem.Transliterate(s: AnsiString; CodePage: TSystemCodePage
|
1027 |
): RawByteString;
|
1028 |
begin
|
1029 |
Result := s;
|
1030 |
if StringCodePage(Result) <> CodePage then
|
1031 |
SetCodePage(Result,CodePage,CodePage <> CP_NONE);
|
1032 |
end;
|
1033 |
|
1034 |
procedure TSQLDataItem.SetScale(aValue: integer);
|
1035 |
begin
|
1036 |
//Do nothing by default
|
1037 |
end;
|
1038 |
|
1039 |
procedure TSQLDataItem.SetDataLength(len: cardinal);
|
1040 |
begin
|
1041 |
//Do nothing by default
|
1042 |
end;
|
1043 |
|
1044 |
procedure TSQLDataItem.SetSQLType(aValue: cardinal);
|
1045 |
begin
|
1046 |
//Do nothing by default
|
1047 |
end;
|
1048 |
|
1049 |
function TSQLDataItem.GetSQLTypeName: AnsiString;
|
1050 |
begin
|
1051 |
Result := GetSQLTypeName(GetSQLType);
|
1052 |
end;
|
1053 |
|
1054 |
class function TSQLDataItem.GetSQLTypeName(SQLType: short): AnsiString;
|
1055 |
begin
|
1056 |
Result := 'Unknown';
|
1057 |
case SQLType of
|
1058 |
SQL_VARYING: Result := 'SQL_VARYING';
|
1059 |
SQL_TEXT: Result := 'SQL_TEXT';
|
1060 |
SQL_DOUBLE: Result := 'SQL_DOUBLE';
|
1061 |
SQL_FLOAT: Result := 'SQL_FLOAT';
|
1062 |
SQL_LONG: Result := 'SQL_LONG';
|
1063 |
SQL_SHORT: Result := 'SQL_SHORT';
|
1064 |
SQL_TIMESTAMP: Result := 'SQL_TIMESTAMP';
|
1065 |
SQL_BLOB: Result := 'SQL_BLOB';
|
1066 |
SQL_D_FLOAT: Result := 'SQL_D_FLOAT';
|
1067 |
SQL_ARRAY: Result := 'SQL_ARRAY';
|
1068 |
SQL_QUAD: Result := 'SQL_QUAD';
|
1069 |
SQL_TYPE_TIME: Result := 'SQL_TYPE_TIME';
|
1070 |
SQL_TYPE_DATE: Result := 'SQL_TYPE_DATE';
|
1071 |
SQL_INT64: Result := 'SQL_INT64';
|
1072 |
end;
|
1073 |
end;
|
1074 |
|
1075 |
function TSQLDataItem.GetAsBoolean: boolean;
|
1076 |
begin
|
1077 |
CheckActive;
|
1078 |
result := false;
|
1079 |
if not IsNull then
|
1080 |
begin
|
1081 |
if SQLType = SQL_BOOLEAN then
|
1082 |
result := PByte(SQLData)^ = ISC_TRUE
|
1083 |
else
|
1084 |
IBError(ibxeInvalidDataConversion, [nil]);
|
1085 |
end
|
1086 |
end;
|
1087 |
|
1088 |
function TSQLDataItem.GetAsCurrency: Currency;
|
1089 |
begin
|
1090 |
CheckActive;
|
1091 |
result := 0;
|
1092 |
if GetSQLDialect < 3 then
|
1093 |
result := GetAsDouble
|
1094 |
else begin
|
1095 |
if not IsNull then
|
1096 |
case SQLType of
|
1097 |
SQL_TEXT, SQL_VARYING: begin
|
1098 |
try
|
1099 |
result := StrtoCurr(AsString);
|
1100 |
except
|
1101 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
|
1102 |
end;
|
1103 |
end;
|
1104 |
SQL_SHORT:
|
1105 |
result := AdjustScaleToCurrency(Int64(PShort(SQLData)^),
|
1106 |
Scale);
|
1107 |
SQL_LONG:
|
1108 |
result := AdjustScaleToCurrency(Int64(PLong(SQLData)^),
|
1109 |
Scale);
|
1110 |
SQL_INT64:
|
1111 |
result := AdjustScaleToCurrency(PInt64(SQLData)^,
|
1112 |
Scale);
|
1113 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
|
1114 |
result := Trunc(AsDouble);
|
1115 |
else
|
1116 |
IBError(ibxeInvalidDataConversion, [nil]);
|
1117 |
end;
|
1118 |
end;
|
1119 |
end;
|
1120 |
|
1121 |
function TSQLDataItem.GetAsInt64: Int64;
|
1122 |
begin
|
1123 |
CheckActive;
|
1124 |
result := 0;
|
1125 |
if not IsNull then
|
1126 |
case SQLType of
|
1127 |
SQL_TEXT, SQL_VARYING: begin
|
1128 |
try
|
1129 |
result := StrToInt64(AsString);
|
1130 |
except
|
1131 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
|
1132 |
end;
|
1133 |
end;
|
1134 |
SQL_SHORT:
|
1135 |
result := AdjustScaleToInt64(Int64(PShort(SQLData)^),
|
1136 |
Scale);
|
1137 |
SQL_LONG:
|
1138 |
result := AdjustScaleToInt64(Int64(PLong(SQLData)^),
|
1139 |
Scale);
|
1140 |
SQL_INT64:
|
1141 |
result := AdjustScaleToInt64(PInt64(SQLData)^,
|
1142 |
Scale);
|
1143 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
|
1144 |
result := Trunc(AsDouble);
|
1145 |
else
|
1146 |
IBError(ibxeInvalidDataConversion, [nil]);
|
1147 |
end;
|
1148 |
end;
|
1149 |
|
1150 |
function TSQLDataItem.GetAsDateTime: TDateTime;
|
1151 |
begin
|
1152 |
CheckActive;
|
1153 |
result := 0;
|
1154 |
if not IsNull then
|
1155 |
with FirebirdClientAPI do
|
1156 |
case SQLType of
|
1157 |
SQL_TEXT, SQL_VARYING: begin
|
1158 |
try
|
1159 |
result := StrToDate(AsString);
|
1160 |
except
|
1161 |
on E: EConvertError do IBError(ibxeInvalidDataConversion, [nil]);
|
1162 |
end;
|
1163 |
end;
|
1164 |
SQL_TYPE_DATE:
|
1165 |
result := SQLDecodeDate(SQLData);
|
1166 |
SQL_TYPE_TIME:
|
1167 |
result := SQLDecodeTime(SQLData);
|
1168 |
SQL_TIMESTAMP:
|
1169 |
result := SQLDecodeDateTime(SQLData);
|
1170 |
else
|
1171 |
IBError(ibxeInvalidDataConversion, [nil]);
|
1172 |
end;
|
1173 |
end;
|
1174 |
|
1175 |
function TSQLDataItem.GetAsDouble: Double;
|
1176 |
begin
|
1177 |
CheckActive;
|
1178 |
result := 0;
|
1179 |
if not IsNull then begin
|
1180 |
case SQLType of
|
1181 |
SQL_TEXT, SQL_VARYING: begin
|
1182 |
try
|
1183 |
result := StrToFloat(AsString);
|
1184 |
except
|
1185 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
|
1186 |
end;
|
1187 |
end;
|
1188 |
SQL_SHORT:
|
1189 |
result := AdjustScale(Int64(PShort(SQLData)^),
|
1190 |
Scale);
|
1191 |
SQL_LONG:
|
1192 |
result := AdjustScale(Int64(PLong(SQLData)^),
|
1193 |
Scale);
|
1194 |
SQL_INT64:
|
1195 |
result := AdjustScale(PInt64(SQLData)^, Scale);
|
1196 |
SQL_FLOAT:
|
1197 |
result := PFloat(SQLData)^;
|
1198 |
SQL_DOUBLE, SQL_D_FLOAT:
|
1199 |
result := PDouble(SQLData)^;
|
1200 |
else
|
1201 |
IBError(ibxeInvalidDataConversion, [nil]);
|
1202 |
end;
|
1203 |
if Scale <> 0 then
|
1204 |
result :=
|
1205 |
StrToFloat(FloatToStrF(result, fffixed, 15,
|
1206 |
Abs(Scale) ));
|
1207 |
end;
|
1208 |
end;
|
1209 |
|
1210 |
function TSQLDataItem.GetAsFloat: Float;
|
1211 |
begin
|
1212 |
CheckActive;
|
1213 |
result := 0;
|
1214 |
try
|
1215 |
result := AsDouble;
|
1216 |
except
|
1217 |
on E: EOverflow do
|
1218 |
IBError(ibxeInvalidDataConversion, [nil]);
|
1219 |
end;
|
1220 |
end;
|
1221 |
|
1222 |
function TSQLDataItem.GetAsLong: Long;
|
1223 |
begin
|
1224 |
CheckActive;
|
1225 |
result := 0;
|
1226 |
if not IsNull then
|
1227 |
case SQLType of
|
1228 |
SQL_TEXT, SQL_VARYING: begin
|
1229 |
try
|
1230 |
result := StrToInt(AsString);
|
1231 |
except
|
1232 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
|
1233 |
end;
|
1234 |
end;
|
1235 |
SQL_SHORT:
|
1236 |
result := Trunc(AdjustScale(Int64(PShort(SQLData)^),
|
1237 |
Scale));
|
1238 |
SQL_LONG:
|
1239 |
result := Trunc(AdjustScale(Int64(PLong(SQLData)^),
|
1240 |
Scale));
|
1241 |
SQL_INT64:
|
1242 |
result := Trunc(AdjustScale(PInt64(SQLData)^, Scale));
|
1243 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
|
1244 |
result := Trunc(AsDouble);
|
1245 |
else
|
1246 |
IBError(ibxeInvalidDataConversion, [nil]);
|
1247 |
end;
|
1248 |
end;
|
1249 |
|
1250 |
function TSQLDataItem.GetAsPointer: Pointer;
|
1251 |
begin
|
1252 |
CheckActive;
|
1253 |
if not IsNull then
|
1254 |
result := SQLData
|
1255 |
else
|
1256 |
result := nil;
|
1257 |
end;
|
1258 |
|
1259 |
function TSQLDataItem.GetAsQuad: TISC_QUAD;
|
1260 |
begin
|
1261 |
CheckActive;
|
1262 |
result.gds_quad_high := 0;
|
1263 |
result.gds_quad_low := 0;
|
1264 |
if not IsNull then
|
1265 |
case SQLType of
|
1266 |
SQL_BLOB, SQL_ARRAY, SQL_QUAD:
|
1267 |
result := PISC_QUAD(SQLData)^;
|
1268 |
else
|
1269 |
IBError(ibxeInvalidDataConversion, [nil]);
|
1270 |
end;
|
1271 |
end;
|
1272 |
|
1273 |
function TSQLDataItem.GetAsShort: short;
|
1274 |
begin
|
1275 |
CheckActive;
|
1276 |
result := 0;
|
1277 |
try
|
1278 |
result := AsLong;
|
1279 |
except
|
1280 |
on E: Exception do IBError(ibxeInvalidDataConversion, [nil]);
|
1281 |
end;
|
1282 |
end;
|
1283 |
|
1284 |
|
1285 |
function TSQLDataItem.GetAsString: AnsiString;
|
1286 |
var
|
1287 |
sz: PByte;
|
1288 |
str_len: Integer;
|
1289 |
rs: RawByteString;
|
1290 |
begin
|
1291 |
CheckActive;
|
1292 |
result := '';
|
1293 |
{ Check null, if so return a default string }
|
1294 |
if not IsNull then
|
1295 |
with FirebirdClientAPI do
|
1296 |
case SQLType of
|
1297 |
SQL_BOOLEAN:
|
1298 |
if AsBoolean then
|
1299 |
Result := sTrue
|
1300 |
else
|
1301 |
Result := SFalse;
|
1302 |
|
1303 |
SQL_TEXT, SQL_VARYING:
|
1304 |
begin
|
1305 |
sz := SQLData;
|
1306 |
if (SQLType = SQL_TEXT) then
|
1307 |
str_len := DataLength
|
1308 |
else begin
|
1309 |
str_len := DecodeInteger(SQLData, 2);
|
1310 |
Inc(sz, 2);
|
1311 |
end;
|
1312 |
SetString(rs, PAnsiChar(sz), str_len);
|
1313 |
SetCodePage(rs,GetCodePage,false);
|
1314 |
if (SQLType = SQL_TEXT) and (GetCharSetID <> 1) then
|
1315 |
Result := TrimRight(rs)
|
1316 |
else
|
1317 |
Result := rs
|
1318 |
end;
|
1319 |
SQL_TYPE_DATE:
|
1320 |
case GetSQLDialect of
|
1321 |
1 : result := DateTimeToStr(AsDateTime);
|
1322 |
3 : result := DateToStr(AsDateTime);
|
1323 |
end;
|
1324 |
SQL_TYPE_TIME :
|
1325 |
result := TimeToStr(AsDateTime);
|
1326 |
SQL_TIMESTAMP:
|
1327 |
{$IF declared(DefaultFormatSettings)}
|
1328 |
with DefaultFormatSettings do
|
1329 |
{$ELSE}
|
1330 |
{$IF declared(FormatSettings)}
|
1331 |
with FormatSettings do
|
1332 |
{$IFEND}
|
1333 |
{$IFEND}
|
1334 |
result := FormatDateTime(ShortDateFormat + ' ' +
|
1335 |
LongTimeFormat+'.zzz',AsDateTime);
|
1336 |
SQL_SHORT, SQL_LONG:
|
1337 |
if Scale = 0 then
|
1338 |
result := IntToStr(AsLong)
|
1339 |
else if Scale >= (-4) then
|
1340 |
result := CurrToStr(AsCurrency)
|
1341 |
else
|
1342 |
result := FloatToStr(AsDouble);
|
1343 |
SQL_INT64:
|
1344 |
if Scale = 0 then
|
1345 |
result := IntToStr(AsInt64)
|
1346 |
else if Scale >= (-4) then
|
1347 |
result := CurrToStr(AsCurrency)
|
1348 |
else
|
1349 |
result := FloatToStr(AsDouble);
|
1350 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
|
1351 |
result := FloatToStr(AsDouble);
|
1352 |
else
|
1353 |
IBError(ibxeInvalidDataConversion, [nil]);
|
1354 |
end;
|
1355 |
end;
|
1356 |
|
1357 |
function TSQLDataItem.GetIsNull: Boolean;
|
1358 |
begin
|
1359 |
CheckActive;
|
1360 |
Result := false;
|
1361 |
end;
|
1362 |
|
1363 |
function TSQLDataItem.getIsNullable: boolean;
|
1364 |
begin
|
1365 |
CheckActive;
|
1366 |
Result := false;
|
1367 |
end;
|
1368 |
|
1369 |
function TSQLDataItem.GetAsVariant: Variant;
|
1370 |
begin
|
1371 |
CheckActive;
|
1372 |
if IsNull then
|
1373 |
result := NULL
|
1374 |
{ Check null, if so return a default string }
|
1375 |
else case SQLType of
|
1376 |
SQL_ARRAY:
|
1377 |
result := '(Array)'; {do not localize}
|
1378 |
SQL_BLOB,
|
1379 |
SQL_TEXT, SQL_VARYING:
|
1380 |
result := AsString;
|
1381 |
SQL_TIMESTAMP, SQL_TYPE_DATE, SQL_TYPE_TIME:
|
1382 |
result := AsDateTime;
|
1383 |
SQL_SHORT, SQL_LONG:
|
1384 |
if Scale = 0 then
|
1385 |
result := AsLong
|
1386 |
else if Scale >= (-4) then
|
1387 |
result := AsCurrency
|
1388 |
else
|
1389 |
result := AsDouble;
|
1390 |
SQL_INT64:
|
1391 |
if Scale = 0 then
|
1392 |
result := AsInt64
|
1393 |
else if Scale >= (-4) then
|
1394 |
result := AsCurrency
|
1395 |
else
|
1396 |
result := AsDouble;
|
1397 |
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
|
1398 |
result := AsDouble;
|
1399 |
SQL_BOOLEAN:
|
1400 |
result := AsBoolean;
|
1401 |
else
|
1402 |
IBError(ibxeInvalidDataConversion, [nil]);
|
1403 |
end;
|
1404 |
end;
|
1405 |
|
1406 |
function TSQLDataItem.GetModified: boolean;
|
1407 |
begin
|
1408 |
Result := false;
|
1409 |
end;
|
1410 |
|
1411 |
|
1412 |
procedure TSQLDataItem.SetIsNull(Value: Boolean);
|
1413 |
begin
|
1414 |
//ignore unless overridden
|
1415 |
end;
|
1416 |
|
1417 |
procedure TSQLDataItem.SetIsNullable(Value: Boolean);
|
1418 |
begin
|
1419 |
//ignore unless overridden
|
1420 |
end;
|
1421 |
|
1422 |
procedure TSQLDataItem.SetName(aValue: AnsiString);
|
1423 |
begin
|
1424 |
//ignore unless overridden
|
1425 |
end;
|
1426 |
|
1427 |
procedure TSQLDataItem.SetAsCurrency(Value: Currency);
|
1428 |
begin
|
1429 |
CheckActive;
|
1430 |
if GetSQLDialect < 3 then
|
1431 |
AsDouble := Value
|
1432 |
else
|
1433 |
begin
|
1434 |
Changing;
|
1435 |
if IsNullable then
|
1436 |
IsNull := False;
|
1437 |
SQLType := SQL_INT64;
|
1438 |
Scale := -4;
|
1439 |
DataLength := SizeOf(Int64);
|
1440 |
PCurrency(SQLData)^ := Value;
|
1441 |
Changed;
|
1442 |
end;
|
1443 |
end;
|
1444 |
|
1445 |
procedure TSQLDataItem.SetAsInt64(Value: Int64);
|
1446 |
begin
|
1447 |
CheckActive;
|
1448 |
Changing;
|
1449 |
if IsNullable then
|
1450 |
IsNull := False;
|
1451 |
|
1452 |
SQLType := SQL_INT64;
|
1453 |
Scale := 0;
|
1454 |
DataLength := SizeOf(Int64);
|
1455 |
PInt64(SQLData)^ := Value;
|
1456 |
Changed;
|
1457 |
end;
|
1458 |
|
1459 |
procedure TSQLDataItem.SetAsDate(Value: TDateTime);
|
1460 |
begin
|
1461 |
CheckActive;
|
1462 |
if GetSQLDialect < 3 then
|
1463 |
begin
|
1464 |
AsDateTime := Value;
|
1465 |
exit;
|
1466 |
end;
|
1467 |
|
1468 |
Changing;
|
1469 |
if IsNullable then
|
1470 |
IsNull := False;
|
1471 |
|
1472 |
SQLType := SQL_TYPE_DATE;
|
1473 |
DataLength := SizeOf(ISC_DATE);
|
1474 |
with FirebirdClientAPI do
|
1475 |
SQLEncodeDate(Value,SQLData);
|
1476 |
Changed;
|
1477 |
end;
|
1478 |
|
1479 |
procedure TSQLDataItem.SetAsTime(Value: TDateTime);
|
1480 |
begin
|
1481 |
CheckActive;
|
1482 |
if GetSQLDialect < 3 then
|
1483 |
begin
|
1484 |
AsDateTime := Value;
|
1485 |
exit;
|
1486 |
end;
|
1487 |
|
1488 |
Changing;
|
1489 |
if IsNullable then
|
1490 |
IsNull := False;
|
1491 |
|
1492 |
SQLType := SQL_TYPE_TIME;
|
1493 |
DataLength := SizeOf(ISC_TIME);
|
1494 |
with FirebirdClientAPI do
|
1495 |
SQLEncodeTime(Value,SQLData);
|
1496 |
Changed;
|
1497 |
end;
|
1498 |
|
1499 |
procedure TSQLDataItem.SetAsDateTime(Value: TDateTime);
|
1500 |
begin
|
1501 |
CheckActive;
|
1502 |
if IsNullable then
|
1503 |
IsNull := False;
|
1504 |
|
1505 |
Changing;
|
1506 |
SQLType := SQL_TIMESTAMP;
|
1507 |
DataLength := SizeOf(ISC_TIME) + sizeof(ISC_DATE);
|
1508 |
with FirebirdClientAPI do
|
1509 |
SQLEncodeDateTime(Value,SQLData);
|
1510 |
Changed;
|
1511 |
end;
|
1512 |
|
1513 |
procedure TSQLDataItem.SetAsDouble(Value: Double);
|
1514 |
begin
|
1515 |
CheckActive;
|
1516 |
if IsNullable then
|
1517 |
IsNull := False;
|
1518 |
|
1519 |
Changing;
|
1520 |
SQLType := SQL_DOUBLE;
|
1521 |
DataLength := SizeOf(Double);
|
1522 |
Scale := 0;
|
1523 |
PDouble(SQLData)^ := Value;
|
1524 |
Changed;
|
1525 |
end;
|
1526 |
|
1527 |
procedure TSQLDataItem.SetAsFloat(Value: Float);
|
1528 |
begin
|
1529 |
CheckActive;
|
1530 |
if IsNullable then
|
1531 |
IsNull := False;
|
1532 |
|
1533 |
Changing;
|
1534 |
SQLType := SQL_FLOAT;
|
1535 |
DataLength := SizeOf(Float);
|
1536 |
Scale := 0;
|
1537 |
PSingle(SQLData)^ := Value;
|
1538 |
Changed;
|
1539 |
end;
|
1540 |
|
1541 |
procedure TSQLDataItem.SetAsLong(Value: Long);
|
1542 |
begin
|
1543 |
CheckActive;
|
1544 |
if IsNullable then
|
1545 |
IsNull := False;
|
1546 |
|
1547 |
Changing;
|
1548 |
SQLType := SQL_LONG;
|
1549 |
DataLength := SizeOf(Long);
|
1550 |
Scale := 0;
|
1551 |
PLong(SQLData)^ := Value;
|
1552 |
Changed;
|
1553 |
end;
|
1554 |
|
1555 |
procedure TSQLDataItem.SetAsPointer(Value: Pointer);
|
1556 |
begin
|
1557 |
CheckActive;
|
1558 |
Changing;
|
1559 |
if IsNullable and (Value = nil) then
|
1560 |
IsNull := True
|
1561 |
else
|
1562 |
begin
|
1563 |
IsNull := False;
|
1564 |
SQLType := SQL_TEXT;
|
1565 |
Move(Value^, SQLData^, DataLength);
|
1566 |
end;
|
1567 |
Changed;
|
1568 |
end;
|
1569 |
|
1570 |
procedure TSQLDataItem.SetAsQuad(Value: TISC_QUAD);
|
1571 |
begin
|
1572 |
CheckActive;
|
1573 |
Changing;
|
1574 |
if IsNullable then
|
1575 |
IsNull := False;
|
1576 |
if (SQLType <> SQL_BLOB) and
|
1577 |
(SQLType <> SQL_ARRAY) then
|
1578 |
IBError(ibxeInvalidDataConversion, [nil]);
|
1579 |
DataLength := SizeOf(TISC_QUAD);
|
1580 |
PISC_QUAD(SQLData)^ := Value;
|
1581 |
Changed;
|
1582 |
end;
|
1583 |
|
1584 |
procedure TSQLDataItem.SetAsShort(Value: short);
|
1585 |
begin
|
1586 |
CheckActive;
|
1587 |
Changing;
|
1588 |
if IsNullable then
|
1589 |
IsNull := False;
|
1590 |
|
1591 |
SQLType := SQL_SHORT;
|
1592 |
DataLength := SizeOf(Short);
|
1593 |
Scale := 0;
|
1594 |
PShort(SQLData)^ := Value;
|
1595 |
Changed;
|
1596 |
end;
|
1597 |
|
1598 |
procedure TSQLDataItem.SetAsString(Value: AnsiString);
|
1599 |
begin
|
1600 |
InternalSetAsString(Value);
|
1601 |
end;
|
1602 |
|
1603 |
procedure TSQLDataItem.SetAsVariant(Value: Variant);
|
1604 |
begin
|
1605 |
CheckActive;
|
1606 |
if VarIsNull(Value) then
|
1607 |
IsNull := True
|
1608 |
else case VarType(Value) of
|
1609 |
varEmpty, varNull:
|
1610 |
IsNull := True;
|
1611 |
varSmallint, varInteger, varByte,
|
1612 |
varWord, varShortInt:
|
1613 |
AsLong := Value;
|
1614 |
varInt64:
|
1615 |
AsInt64 := Value;
|
1616 |
varSingle, varDouble:
|
1617 |
AsDouble := Value;
|
1618 |
varCurrency:
|
1619 |
AsCurrency := Value;
|
1620 |
varBoolean:
|
1621 |
AsBoolean := Value;
|
1622 |
varDate:
|
1623 |
AsDateTime := Value;
|
1624 |
varOleStr, varString:
|
1625 |
AsString := Value;
|
1626 |
varArray:
|
1627 |
IBError(ibxeNotSupported, [nil]);
|
1628 |
varByRef, varDispatch, varError, varUnknown, varVariant:
|
1629 |
IBError(ibxeNotPermitted, [nil]);
|
1630 |
end;
|
1631 |
end;
|
1632 |
|
1633 |
procedure TSQLDataItem.SetAsNumeric(Value: Int64; aScale: integer);
|
1634 |
begin
|
1635 |
CheckActive;
|
1636 |
Changing;
|
1637 |
if IsNullable then
|
1638 |
IsNull := False;
|
1639 |
|
1640 |
SQLType := SQL_INT64;
|
1641 |
Scale := aScale;
|
1642 |
DataLength := SizeOf(Int64);
|
1643 |
PInt64(SQLData)^ := Value;
|
1644 |
Changed;
|
1645 |
end;
|
1646 |
|
1647 |
procedure TSQLDataItem.SetAsBoolean(AValue: boolean);
|
1648 |
begin
|
1649 |
CheckActive;
|
1650 |
Changing;
|
1651 |
if IsNullable then
|
1652 |
IsNull := False;
|
1653 |
|
1654 |
SQLType := SQL_BOOLEAN;
|
1655 |
DataLength := 1;
|
1656 |
Scale := 0;
|
1657 |
if AValue then
|
1658 |
PByte(SQLData)^ := ISC_TRUE
|
1659 |
else
|
1660 |
PByte(SQLData)^ := ISC_FALSE;
|
1661 |
Changed;
|
1662 |
end;
|
1663 |
|
1664 |
{TColumnMetaData}
|
1665 |
|
1666 |
procedure TColumnMetaData.CheckActive;
|
1667 |
begin
|
1668 |
if not FIBXSQLVAR.Parent.StateChanged(FChangeSeqNo) then Exit;
|
1669 |
|
1670 |
if FPrepareSeqNo < FIBXSQLVAR.Parent.GetPrepareSeqNo then
|
1671 |
IBError(ibxeInterfaceOutofDate,[nil]);
|
1672 |
|
1673 |
if not FIBXSQLVAR.Parent.CheckStatementStatus(ssPrepared) then
|
1674 |
IBError(ibxeStatementNotPrepared, [nil]);
|
1675 |
end;
|
1676 |
|
1677 |
function TColumnMetaData.SQLData: PByte;
|
1678 |
begin
|
1679 |
Result := FIBXSQLVAR.SQLData;
|
1680 |
end;
|
1681 |
|
1682 |
function TColumnMetaData.GetDataLength: cardinal;
|
1683 |
begin
|
1684 |
Result := FIBXSQLVAR.DataLength;
|
1685 |
end;
|
1686 |
|
1687 |
function TColumnMetaData.GetCodePage: TSystemCodePage;
|
1688 |
begin
|
1689 |
Result := FIBXSQLVAR.GetCodePage;
|
1690 |
end;
|
1691 |
|
1692 |
constructor TColumnMetaData.Create(aOwner: IUnknown; aIBXSQLVAR: TSQLVarData);
|
1693 |
begin
|
1694 |
inherited Create;
|
1695 |
FIBXSQLVAR := aIBXSQLVAR;
|
1696 |
FOwner := aOwner;
|
1697 |
FPrepareSeqNo := FIBXSQLVAR.Parent.PrepareSeqNo;
|
1698 |
FIBXSQLVAR.Parent.StateChanged(FChangeSeqNo)
|
1699 |
end;
|
1700 |
|
1701 |
destructor TColumnMetaData.Destroy;
|
1702 |
begin
|
1703 |
(FOwner as TInterfaceOwner).Remove(self);
|
1704 |
inherited Destroy;
|
1705 |
end;
|
1706 |
|
1707 |
|
1708 |
function TColumnMetaData.GetSQLDialect: integer;
|
1709 |
begin
|
1710 |
Result := FIBXSQLVAR.Statement.GetSQLDialect;
|
1711 |
end;
|
1712 |
|
1713 |
function TColumnMetaData.GetIndex: integer;
|
1714 |
begin
|
1715 |
Result := FIBXSQLVAR.Index;
|
1716 |
end;
|
1717 |
|
1718 |
function TColumnMetaData.GetSQLType: cardinal;
|
1719 |
begin
|
1720 |
CheckActive;
|
1721 |
result := FIBXSQLVAR.SQLType;
|
1722 |
end;
|
1723 |
|
1724 |
function TColumnMetaData.getSubtype: integer;
|
1725 |
begin
|
1726 |
CheckActive;
|
1727 |
result := FIBXSQLVAR.SQLSubtype;
|
1728 |
end;
|
1729 |
|
1730 |
function TColumnMetaData.getRelationName: AnsiString;
|
1731 |
begin
|
1732 |
CheckActive;
|
1733 |
result := FIBXSQLVAR.RelationName;
|
1734 |
end;
|
1735 |
|
1736 |
function TColumnMetaData.getOwnerName: AnsiString;
|
1737 |
begin
|
1738 |
CheckActive;
|
1739 |
result := FIBXSQLVAR.OwnerName;
|
1740 |
end;
|
1741 |
|
1742 |
function TColumnMetaData.getSQLName: AnsiString;
|
1743 |
begin
|
1744 |
CheckActive;
|
1745 |
result := FIBXSQLVAR.FieldName;
|
1746 |
end;
|
1747 |
|
1748 |
function TColumnMetaData.getAliasName: AnsiString;
|
1749 |
begin
|
1750 |
CheckActive;
|
1751 |
result := FIBXSQLVAR.AliasName;
|
1752 |
end;
|
1753 |
|
1754 |
function TColumnMetaData.GetName: AnsiString;
|
1755 |
begin
|
1756 |
CheckActive;
|
1757 |
Result := FIBXSQLVAR. Name;
|
1758 |
end;
|
1759 |
|
1760 |
function TColumnMetaData.GetScale: integer;
|
1761 |
begin
|
1762 |
CheckActive;
|
1763 |
result := FIBXSQLVAR.Scale;
|
1764 |
end;
|
1765 |
|
1766 |
function TColumnMetaData.getCharSetID: cardinal;
|
1767 |
begin
|
1768 |
CheckActive;
|
1769 |
Result := FIBXSQLVAR.CharSetID;
|
1770 |
end;
|
1771 |
|
1772 |
function TColumnMetaData.GetIsNullable: boolean;
|
1773 |
begin
|
1774 |
CheckActive;
|
1775 |
result := FIBXSQLVAR.IsNullable;
|
1776 |
end;
|
1777 |
|
1778 |
function TColumnMetaData.GetSize: cardinal;
|
1779 |
begin
|
1780 |
CheckActive;
|
1781 |
result := FIBXSQLVAR.DataLength;
|
1782 |
end;
|
1783 |
|
1784 |
function TColumnMetaData.GetArrayMetaData: IArrayMetaData;
|
1785 |
begin
|
1786 |
CheckActive;
|
1787 |
result := FIBXSQLVAR.GetArrayMetaData;
|
1788 |
end;
|
1789 |
|
1790 |
function TColumnMetaData.GetBlobMetaData: IBlobMetaData;
|
1791 |
begin
|
1792 |
CheckActive;
|
1793 |
result := FIBXSQLVAR.GetBlobMetaData;
|
1794 |
end;
|
1795 |
|
1796 |
{ TIBSQLData }
|
1797 |
|
1798 |
procedure TIBSQLData.CheckActive;
|
1799 |
begin
|
1800 |
if not FIBXSQLVAR.Parent.StateChanged(FChangeSeqNo) then Exit;
|
1801 |
|
1802 |
inherited CheckActive;
|
1803 |
|
1804 |
if not FIBXSQLVAR.Parent.CheckStatementStatus(ssCursorOpen) and
|
1805 |
not FIBXSQLVAR.Parent.CheckStatementStatus(ssExecuteResults) then
|
1806 |
IBError(ibxeSQLClosed, [nil]);
|
1807 |
|
1808 |
if FIBXSQLVAR.Parent.CheckStatementStatus(ssEOF) then
|
1809 |
IBError(ibxeEOF,[nil]);
|
1810 |
|
1811 |
if FIBXSQLVAR.Parent.CheckStatementStatus(ssBOF) then
|
1812 |
IBError(ibxeBOF,[nil]);
|
1813 |
end;
|
1814 |
|
1815 |
function TIBSQLData.GetIsNull: Boolean;
|
1816 |
begin
|
1817 |
CheckActive;
|
1818 |
result := FIBXSQLVAR.IsNull;
|
1819 |
end;
|
1820 |
|
1821 |
function TIBSQLData.GetAsArray: IArray;
|
1822 |
begin
|
1823 |
CheckActive;
|
1824 |
result := FIBXSQLVAR.GetAsArray(AsQuad);
|
1825 |
end;
|
1826 |
|
1827 |
function TIBSQLData.GetAsBlob: IBlob;
|
1828 |
begin
|
1829 |
CheckActive;
|
1830 |
result := FIBXSQLVAR.GetAsBlob(AsQuad,nil);
|
1831 |
end;
|
1832 |
|
1833 |
function TIBSQLData.GetAsBlob(BPB: IBPB): IBlob;
|
1834 |
begin
|
1835 |
CheckActive;
|
1836 |
result := FIBXSQLVAR.GetAsBlob(AsQuad,BPB);
|
1837 |
end;
|
1838 |
|
1839 |
function TIBSQLData.GetAsString: AnsiString;
|
1840 |
begin
|
1841 |
CheckActive;
|
1842 |
Result := '';
|
1843 |
{ Check null, if so return a default string }
|
1844 |
if not IsNull then
|
1845 |
case SQLType of
|
1846 |
SQL_ARRAY:
|
1847 |
result := SArray;
|
1848 |
SQL_BLOB:
|
1849 |
Result := FIBXSQLVAR.GetAsBlob(AsQuad,nil).GetAsString;
|
1850 |
else
|
1851 |
Result := inherited GetAsString;
|
1852 |
end;
|
1853 |
end;
|
1854 |
|
1855 |
{ TSQLParam }
|
1856 |
|
1857 |
procedure TSQLParam.InternalSetAsString(Value: AnsiString);
|
1858 |
var b: IBlob;
|
1859 |
dt: TDateTime;
|
1860 |
begin
|
1861 |
CheckActive;
|
1862 |
if IsNullable then
|
1863 |
IsNull := False;
|
1864 |
case SQLTYPE of
|
1865 |
SQL_BOOLEAN:
|
1866 |
if AnsiCompareText(Value,STrue) = 0 then
|
1867 |
AsBoolean := true
|
1868 |
else
|
1869 |
if AnsiCompareText(Value,SFalse) = 0 then
|
1870 |
AsBoolean := false
|
1871 |
else
|
1872 |
IBError(ibxeInvalidDataConversion,[nil]);
|
1873 |
|
1874 |
SQL_BLOB:
|
1875 |
begin
|
1876 |
Changing;
|
1877 |
b := FIBXSQLVAR.CreateBlob;
|
1878 |
b.SetAsString(Value);
|
1879 |
AsBlob := b;
|
1880 |
Changed;
|
1881 |
end;
|
1882 |
|
1883 |
SQL_VARYING,
|
1884 |
SQL_TEXT:
|
1885 |
begin
|
1886 |
Changing;
|
1887 |
FIBXSQLVar.SetString(Transliterate(Value,GetCodePage));
|
1888 |
Changed;
|
1889 |
end;
|
1890 |
|
1891 |
SQL_SHORT,
|
1892 |
SQL_LONG,
|
1893 |
SQL_INT64:
|
1894 |
SetAsNumeric(AdjustScaleFromCurrency(StrToCurr(Value),GetScale),GetScale);
|
1895 |
|
1896 |
SQL_D_FLOAT,
|
1897 |
SQL_DOUBLE,
|
1898 |
SQL_FLOAT:
|
1899 |
SetAsDouble(StrToFloat(Value));
|
1900 |
|
1901 |
SQL_TIMESTAMP:
|
1902 |
if TryStrToDateTime(Value,dt) then
|
1903 |
SetAsDateTime(dt)
|
1904 |
else
|
1905 |
FIBXSQLVar.SetString(Value);
|
1906 |
|
1907 |
SQL_TYPE_DATE:
|
1908 |
if TryStrToDateTime(Value,dt) then
|
1909 |
SetAsDate(dt)
|
1910 |
else
|
1911 |
FIBXSQLVar.SetString(Value);
|
1912 |
|
1913 |
SQL_TYPE_TIME:
|
1914 |
if TryStrToDateTime(Value,dt) then
|
1915 |
SetAsTime(dt)
|
1916 |
else
|
1917 |
FIBXSQLVar.SetString(Value);
|
1918 |
|
1919 |
else
|
1920 |
IBError(ibxeInvalidDataConversion,[nil]);
|
1921 |
end;
|
1922 |
end;
|
1923 |
|
1924 |
procedure TSQLParam.CheckActive;
|
1925 |
begin
|
1926 |
if not FIBXSQLVAR.Parent.StateChanged(FChangeSeqNo) then Exit;
|
1927 |
|
1928 |
if FPrepareSeqNo < FIBXSQLVAR.Parent.GetPrepareSeqNo then
|
1929 |
IBError(ibxeInterfaceOutofDate,[nil]);
|
1930 |
|
1931 |
if not FIBXSQLVAR.Parent.CheckStatementStatus(ssPrepared) then
|
1932 |
IBError(ibxeStatementNotPrepared, [nil]);
|
1933 |
end;
|
1934 |
|
1935 |
procedure TSQLParam.SetScale(aValue: integer);
|
1936 |
begin
|
1937 |
CheckActive;
|
1938 |
FIBXSQLVAR.Scale := aValue;
|
1939 |
end;
|
1940 |
|
1941 |
procedure TSQLParam.SetDataLength(len: cardinal);
|
1942 |
begin
|
1943 |
CheckActive;
|
1944 |
FIBXSQLVAR.DataLength := len;
|
1945 |
end;
|
1946 |
|
1947 |
procedure TSQLParam.SetSQLType(aValue: cardinal);
|
1948 |
begin
|
1949 |
CheckActive;
|
1950 |
FIBXSQLVAR.SQLType := aValue;
|
1951 |
end;
|
1952 |
|
1953 |
procedure TSQLParam.Clear;
|
1954 |
begin
|
1955 |
IsNull := true;
|
1956 |
end;
|
1957 |
|
1958 |
function TSQLParam.GetModified: boolean;
|
1959 |
begin
|
1960 |
CheckActive;
|
1961 |
Result := FIBXSQLVAR.Modified;
|
1962 |
end;
|
1963 |
|
1964 |
function TSQLParam.GetAsPointer: Pointer;
|
1965 |
begin
|
1966 |
IsNull := false; {Assume that we get the pointer in order to set a value}
|
1967 |
Changed;
|
1968 |
Result := inherited GetAsPointer;
|
1969 |
end;
|
1970 |
|
1971 |
procedure TSQLParam.SetName(Value: AnsiString);
|
1972 |
begin
|
1973 |
CheckActive;
|
1974 |
FIBXSQLVAR.Name := Value;
|
1975 |
end;
|
1976 |
|
1977 |
procedure TSQLParam.SetIsNull(Value: Boolean);
|
1978 |
var i: integer;
|
1979 |
begin
|
1980 |
CheckActive;
|
1981 |
if FIBXSQLVAR.UniqueName then
|
1982 |
FIBXSQLVAR.IsNull := Value
|
1983 |
else
|
1984 |
with FIBXSQLVAR.Parent do
|
1985 |
begin
|
1986 |
for i := 0 to Count - 1 do
|
1987 |
if Column[i].Name = Name then
|
1988 |
Column[i].IsNull := Value;
|
1989 |
end
|
1990 |
end;
|
1991 |
|
1992 |
procedure TSQLParam.SetIsNullable(Value: Boolean);
|
1993 |
var i: integer;
|
1994 |
begin
|
1995 |
CheckActive;
|
1996 |
if FIBXSQLVAR.UniqueName then
|
1997 |
FIBXSQLVAR.IsNullable := Value
|
1998 |
else
|
1999 |
with FIBXSQLVAR.Parent do
|
2000 |
begin
|
2001 |
for i := 0 to Count - 1 do
|
2002 |
if Column[i].Name = Name then
|
2003 |
Column[i].IsNullable := Value;
|
2004 |
end
|
2005 |
end;
|
2006 |
|
2007 |
procedure TSQLParam.SetAsArray(anArray: IArray);
|
2008 |
begin
|
2009 |
CheckActive;
|
2010 |
if GetSQLType <> SQL_ARRAY then
|
2011 |
IBError(ibxeInvalidDataConversion,[nil]);
|
2012 |
|
2013 |
if not FIBXSQLVAR.UniqueName then
|
2014 |
IBError(ibxeDuplicateParamName,[FIBXSQLVAR.Name]);
|
2015 |
|
2016 |
SetAsQuad(AnArray.GetArrayID);
|
2017 |
end;
|
2018 |
|
2019 |
procedure TSQLParam.Changed;
|
2020 |
begin
|
2021 |
FIBXSQLVAR.Changed;
|
2022 |
end;
|
2023 |
|
2024 |
procedure TSQLParam.SetAsBoolean(AValue: boolean);
|
2025 |
var i: integer;
|
2026 |
OldSQLVar: TSQLVarData;
|
2027 |
begin
|
2028 |
if FIBXSQLVAR.UniqueName then
|
2029 |
inherited SetAsBoolean(AValue)
|
2030 |
else
|
2031 |
with FIBXSQLVAR.Parent do
|
2032 |
begin
|
2033 |
for i := 0 to Count - 1 do
|
2034 |
if Column[i].Name = Name then
|
2035 |
begin
|
2036 |
OldSQLVar := FIBXSQLVAR;
|
2037 |
FIBXSQLVAR := Column[i];
|
2038 |
try
|
2039 |
inherited SetAsBoolean(AValue);
|
2040 |
finally
|
2041 |
FIBXSQLVAR := OldSQLVar;
|
2042 |
end;
|
2043 |
end;
|
2044 |
end;
|
2045 |
end;
|
2046 |
|
2047 |
procedure TSQLParam.SetAsCurrency(AValue: Currency);
|
2048 |
var i: integer;
|
2049 |
OldSQLVar: TSQLVarData;
|
2050 |
begin
|
2051 |
if FIBXSQLVAR.UniqueName then
|
2052 |
inherited SetAsCurrency(AValue)
|
2053 |
else
|
2054 |
with FIBXSQLVAR.Parent do
|
2055 |
begin
|
2056 |
for i := 0 to Count - 1 do
|
2057 |
if Column[i].Name = Name then
|
2058 |
begin
|
2059 |
OldSQLVar := FIBXSQLVAR;
|
2060 |
FIBXSQLVAR := Column[i];
|
2061 |
try
|
2062 |
inherited SetAsCurrency(AValue);
|
2063 |
finally
|
2064 |
FIBXSQLVAR := OldSQLVar;
|
2065 |
end;
|
2066 |
end;
|
2067 |
end;
|
2068 |
end;
|
2069 |
|
2070 |
procedure TSQLParam.SetAsInt64(AValue: Int64);
|
2071 |
var i: integer;
|
2072 |
OldSQLVar: TSQLVarData;
|
2073 |
begin
|
2074 |
if FIBXSQLVAR.UniqueName then
|
2075 |
inherited SetAsInt64(AValue)
|
2076 |
else
|
2077 |
with FIBXSQLVAR.Parent do
|
2078 |
begin
|
2079 |
for i := 0 to Count - 1 do
|
2080 |
if Column[i].Name = Name then
|
2081 |
begin
|
2082 |
OldSQLVar := FIBXSQLVAR;
|
2083 |
FIBXSQLVAR := Column[i];
|
2084 |
try
|
2085 |
inherited SetAsInt64(AValue);
|
2086 |
finally
|
2087 |
FIBXSQLVAR := OldSQLVar;
|
2088 |
end;
|
2089 |
end;
|
2090 |
end;
|
2091 |
end;
|
2092 |
|
2093 |
procedure TSQLParam.SetAsDate(AValue: TDateTime);
|
2094 |
var i: integer;
|
2095 |
OldSQLVar: TSQLVarData;
|
2096 |
begin
|
2097 |
if FIBXSQLVAR.UniqueName then
|
2098 |
inherited SetAsDate(AValue)
|
2099 |
else
|
2100 |
with FIBXSQLVAR.Parent do
|
2101 |
begin
|
2102 |
for i := 0 to Count - 1 do
|
2103 |
if Column[i].Name = Name then
|
2104 |
begin
|
2105 |
OldSQLVar := FIBXSQLVAR;
|
2106 |
FIBXSQLVAR := Column[i];
|
2107 |
try
|
2108 |
inherited SetAsDate(AValue);
|
2109 |
finally
|
2110 |
FIBXSQLVAR := OldSQLVar;
|
2111 |
end;
|
2112 |
end;
|
2113 |
end;
|
2114 |
end;
|
2115 |
|
2116 |
procedure TSQLParam.SetAsLong(AValue: Long);
|
2117 |
var i: integer;
|
2118 |
OldSQLVar: TSQLVarData;
|
2119 |
begin
|
2120 |
if FIBXSQLVAR.UniqueName then
|
2121 |
inherited SetAsLong(AValue)
|
2122 |
else
|
2123 |
with FIBXSQLVAR.Parent do
|
2124 |
begin
|
2125 |
for i := 0 to Count - 1 do
|
2126 |
if Column[i].Name = Name then
|
2127 |
begin
|
2128 |
OldSQLVar := FIBXSQLVAR;
|
2129 |
FIBXSQLVAR := Column[i];
|
2130 |
try
|
2131 |
inherited SetAsLong(AValue);
|
2132 |
finally
|
2133 |
FIBXSQLVAR := OldSQLVar;
|
2134 |
end;
|
2135 |
end;
|
2136 |
end;
|
2137 |
end;
|
2138 |
|
2139 |
procedure TSQLParam.SetAsTime(AValue: TDateTime);
|
2140 |
var i: integer;
|
2141 |
OldSQLVar: TSQLVarData;
|
2142 |
begin
|
2143 |
if FIBXSQLVAR.UniqueName then
|
2144 |
inherited SetAsTime(AValue)
|
2145 |
else
|
2146 |
with FIBXSQLVAR.Parent do
|
2147 |
begin
|
2148 |
for i := 0 to Count - 1 do
|
2149 |
if Column[i].Name = Name then
|
2150 |
begin
|
2151 |
OldSQLVar := FIBXSQLVAR;
|
2152 |
FIBXSQLVAR := Column[i];
|
2153 |
try
|
2154 |
inherited SetAsTime(AValue);
|
2155 |
finally
|
2156 |
FIBXSQLVAR := OldSQLVar;
|
2157 |
end;
|
2158 |
end;
|
2159 |
end;
|
2160 |
end;
|
2161 |
|
2162 |
procedure TSQLParam.SetAsDateTime(AValue: TDateTime);
|
2163 |
var i: integer;
|
2164 |
OldSQLVar: TSQLVarData;
|
2165 |
begin
|
2166 |
if FIBXSQLVAR.UniqueName then
|
2167 |
inherited SetAsDateTime(AValue)
|
2168 |
else
|
2169 |
with FIBXSQLVAR.Parent do
|
2170 |
begin
|
2171 |
for i := 0 to Count - 1 do
|
2172 |
if Column[i].Name = Name then
|
2173 |
begin
|
2174 |
OldSQLVar := FIBXSQLVAR;
|
2175 |
FIBXSQLVAR := Column[i];
|
2176 |
try
|
2177 |
inherited SetAsDateTime(AValue);
|
2178 |
finally
|
2179 |
FIBXSQLVAR := OldSQLVar;
|
2180 |
end;
|
2181 |
end;
|
2182 |
end;
|
2183 |
end;
|
2184 |
|
2185 |
procedure TSQLParam.SetAsDouble(AValue: Double);
|
2186 |
var i: integer;
|
2187 |
OldSQLVar: TSQLVarData;
|
2188 |
begin
|
2189 |
if FIBXSQLVAR.UniqueName then
|
2190 |
inherited SetAsDouble(AValue)
|
2191 |
else
|
2192 |
with FIBXSQLVAR.Parent do
|
2193 |
begin
|
2194 |
for i := 0 to Count - 1 do
|
2195 |
if Column[i].Name = Name then
|
2196 |
begin
|
2197 |
OldSQLVar := FIBXSQLVAR;
|
2198 |
FIBXSQLVAR := Column[i];
|
2199 |
try
|
2200 |
inherited SetAsDouble(AValue);
|
2201 |
finally
|
2202 |
FIBXSQLVAR := OldSQLVar;
|
2203 |
end;
|
2204 |
end;
|
2205 |
end;
|
2206 |
end;
|
2207 |
|
2208 |
procedure TSQLParam.SetAsFloat(AValue: Float);
|
2209 |
var i: integer;
|
2210 |
OldSQLVar: TSQLVarData;
|
2211 |
begin
|
2212 |
if FIBXSQLVAR.UniqueName then
|
2213 |
inherited SetAsFloat(AValue)
|
2214 |
else
|
2215 |
with FIBXSQLVAR.Parent do
|
2216 |
begin
|
2217 |
for i := 0 to Count - 1 do
|
2218 |
if Column[i].Name = Name then
|
2219 |
begin
|
2220 |
OldSQLVar := FIBXSQLVAR;
|
2221 |
FIBXSQLVAR := Column[i];
|
2222 |
try
|
2223 |
inherited SetAsFloat(AValue);
|
2224 |
finally
|
2225 |
FIBXSQLVAR := OldSQLVar;
|
2226 |
end;
|
2227 |
end;
|
2228 |
end;
|
2229 |
end;
|
2230 |
|
2231 |
procedure TSQLParam.SetAsPointer(AValue: Pointer);
|
2232 |
var i: integer;
|
2233 |
OldSQLVar: TSQLVarData;
|
2234 |
begin
|
2235 |
if FIBXSQLVAR.UniqueName then
|
2236 |
inherited SetAsPointer(AValue)
|
2237 |
else
|
2238 |
with FIBXSQLVAR.Parent do
|
2239 |
begin
|
2240 |
for i := 0 to Count - 1 do
|
2241 |
if Column[i].Name = Name then
|
2242 |
begin
|
2243 |
OldSQLVar := FIBXSQLVAR;
|
2244 |
FIBXSQLVAR := Column[i];
|
2245 |
try
|
2246 |
inherited SetAsPointer(AValue);
|
2247 |
finally
|
2248 |
FIBXSQLVAR := OldSQLVar;
|
2249 |
end;
|
2250 |
end;
|
2251 |
end;
|
2252 |
end;
|
2253 |
|
2254 |
procedure TSQLParam.SetAsShort(AValue: Short);
|
2255 |
var i: integer;
|
2256 |
OldSQLVar: TSQLVarData;
|
2257 |
begin
|
2258 |
if FIBXSQLVAR.UniqueName then
|
2259 |
inherited SetAsShort(AValue)
|
2260 |
else
|
2261 |
with FIBXSQLVAR.Parent do
|
2262 |
begin
|
2263 |
for i := 0 to Count - 1 do
|
2264 |
if Column[i].Name = Name then
|
2265 |
begin
|
2266 |
OldSQLVar := FIBXSQLVAR;
|
2267 |
FIBXSQLVAR := Column[i];
|
2268 |
try
|
2269 |
inherited SetAsShort(AValue);
|
2270 |
finally
|
2271 |
FIBXSQLVAR := OldSQLVar;
|
2272 |
end;
|
2273 |
end;
|
2274 |
end;
|
2275 |
end;
|
2276 |
|
2277 |
procedure TSQLParam.SetAsString(AValue: AnsiString);
|
2278 |
var i: integer;
|
2279 |
OldSQLVar: TSQLVarData;
|
2280 |
begin
|
2281 |
if FIBXSQLVAR.UniqueName then
|
2282 |
InternalSetAsString(AValue)
|
2283 |
else
|
2284 |
with FIBXSQLVAR.Parent do
|
2285 |
begin
|
2286 |
for i := 0 to Count - 1 do
|
2287 |
if Column[i].Name = Name then
|
2288 |
begin
|
2289 |
OldSQLVar := FIBXSQLVAR;
|
2290 |
FIBXSQLVAR := Column[i];
|
2291 |
try
|
2292 |
InternalSetAsString(AValue);
|
2293 |
finally
|
2294 |
FIBXSQLVAR := OldSQLVar;
|
2295 |
end;
|
2296 |
end;
|
2297 |
end;
|
2298 |
end;
|
2299 |
|
2300 |
procedure TSQLParam.SetAsVariant(AValue: Variant);
|
2301 |
var i: integer;
|
2302 |
OldSQLVar: TSQLVarData;
|
2303 |
begin
|
2304 |
if FIBXSQLVAR.UniqueName then
|
2305 |
inherited SetAsVariant(AValue)
|
2306 |
else
|
2307 |
with FIBXSQLVAR.Parent do
|
2308 |
begin
|
2309 |
for i := 0 to Count - 1 do
|
2310 |
if Column[i].Name = Name then
|
2311 |
begin
|
2312 |
OldSQLVar := FIBXSQLVAR;
|
2313 |
FIBXSQLVAR := Column[i];
|
2314 |
try
|
2315 |
inherited SetAsVariant(AValue);
|
2316 |
finally
|
2317 |
FIBXSQLVAR := OldSQLVar;
|
2318 |
end;
|
2319 |
end;
|
2320 |
end;
|
2321 |
end;
|
2322 |
|
2323 |
procedure TSQLParam.SetAsBlob(aValue: IBlob);
|
2324 |
begin
|
2325 |
with FIBXSQLVAR do
|
2326 |
if not UniqueName then
|
2327 |
IBError(ibxeDuplicateParamName,[Name]);
|
2328 |
CheckActive;
|
2329 |
Changing;
|
2330 |
aValue.Close;
|
2331 |
if aValue.GetSubType <> GetSubType then
|
2332 |
IBError(ibxeIncompatibleBlob,[GetSubType,aValue.GetSubType]);
|
2333 |
AsQuad := aValue.GetBlobID;
|
2334 |
Changed;
|
2335 |
end;
|
2336 |
|
2337 |
procedure TSQLParam.SetAsQuad(AValue: TISC_QUAD);
|
2338 |
var i: integer;
|
2339 |
OldSQLVar: TSQLVarData;
|
2340 |
begin
|
2341 |
if FIBXSQLVAR.UniqueName then
|
2342 |
inherited SetAsQuad(AValue)
|
2343 |
else
|
2344 |
with FIBXSQLVAR.Parent do
|
2345 |
begin
|
2346 |
for i := 0 to Count - 1 do
|
2347 |
if Column[i].Name = Name then
|
2348 |
begin
|
2349 |
OldSQLVar := FIBXSQLVAR;
|
2350 |
FIBXSQLVAR := Column[i];
|
2351 |
try
|
2352 |
inherited SetAsQuad(AValue);
|
2353 |
finally
|
2354 |
FIBXSQLVAR := OldSQLVar;
|
2355 |
end;
|
2356 |
end;
|
2357 |
end;
|
2358 |
end;
|
2359 |
|
2360 |
procedure TSQLParam.SetCharSetID(aValue: cardinal);
|
2361 |
begin
|
2362 |
FIBXSQLVAR.SetCharSetID(aValue);
|
2363 |
end;
|
2364 |
|
2365 |
{ TMetaData }
|
2366 |
|
2367 |
procedure TMetaData.CheckActive;
|
2368 |
begin
|
2369 |
if FPrepareSeqNo < FMetaData.PrepareSeqNo then
|
2370 |
IBError(ibxeInterfaceOutofDate,[nil]);
|
2371 |
|
2372 |
if not FMetaData.CheckStatementStatus(ssPrepared) then
|
2373 |
IBError(ibxeStatementNotPrepared, [nil]);
|
2374 |
end;
|
2375 |
|
2376 |
constructor TMetaData.Create(aMetaData: TSQLDataArea);
|
2377 |
begin
|
2378 |
inherited Create(aMetaData.Count);
|
2379 |
FMetaData := aMetaData;
|
2380 |
FStatement := aMetaData.Statement;
|
2381 |
FPrepareSeqNo := aMetaData.PrepareSeqNo;
|
2382 |
end;
|
2383 |
|
2384 |
destructor TMetaData.Destroy;
|
2385 |
begin
|
2386 |
(FStatement as TInterfaceOwner).Remove(self);
|
2387 |
inherited Destroy;
|
2388 |
end;
|
2389 |
|
2390 |
function TMetaData.GetUniqueRelationName: AnsiString;
|
2391 |
begin
|
2392 |
CheckActive;
|
2393 |
Result := FMetaData.UniqueRelationName;
|
2394 |
end;
|
2395 |
|
2396 |
function TMetaData.getCount: integer;
|
2397 |
begin
|
2398 |
CheckActive;
|
2399 |
Result := FMetaData.ColumnsInUseCount;
|
2400 |
end;
|
2401 |
|
2402 |
function TMetaData.getColumnMetaData(index: integer): IColumnMetaData;
|
2403 |
begin
|
2404 |
CheckActive;
|
2405 |
if (index < 0) or (index >= getCount) then
|
2406 |
IBError(ibxeInvalidColumnIndex,[nil]);
|
2407 |
|
2408 |
if FMetaData.Count = 0 then
|
2409 |
Result := nil
|
2410 |
else
|
2411 |
begin
|
2412 |
if not HasInterface(index) then
|
2413 |
AddInterface(index,TColumnMetaData.Create(self,FMetaData.Column[index]));
|
2414 |
Result := TColumnMetaData(GetInterface(index));
|
2415 |
end;
|
2416 |
end;
|
2417 |
|
2418 |
function TMetaData.ByName(Idx: AnsiString): IColumnMetaData;
|
2419 |
var aIBXSQLVAR: TSQLVarData;
|
2420 |
begin
|
2421 |
CheckActive;
|
2422 |
aIBXSQLVAR := FMetaData.ColumnByName(Idx);
|
2423 |
if aIBXSQLVAR = nil then
|
2424 |
IBError(ibxeFieldNotFound,[Idx]);
|
2425 |
Result := getColumnMetaData(aIBXSQLVAR.index);
|
2426 |
end;
|
2427 |
|
2428 |
{ TSQLParams }
|
2429 |
|
2430 |
procedure TSQLParams.CheckActive;
|
2431 |
begin
|
2432 |
if not FSQLParams.StateChanged(FChangeSeqNo) then Exit;
|
2433 |
|
2434 |
if FPrepareSeqNo < FSQLParams.PrepareSeqNo then
|
2435 |
IBError(ibxeInterfaceOutofDate,[nil]);
|
2436 |
|
2437 |
if not FSQLParams.CheckStatementStatus(ssPrepared) then
|
2438 |
IBError(ibxeStatementNotPrepared, [nil]);
|
2439 |
end;
|
2440 |
|
2441 |
constructor TSQLParams.Create(aSQLParams: TSQLDataArea);
|
2442 |
begin
|
2443 |
inherited Create(aSQLParams.Count);
|
2444 |
FSQLParams := aSQLParams;
|
2445 |
FStatement := aSQLParams.Statement;
|
2446 |
FPrepareSeqNo := aSQLParams.PrepareSeqNo;
|
2447 |
FSQLParams.StateChanged(FChangeSeqNo);
|
2448 |
end;
|
2449 |
|
2450 |
destructor TSQLParams.Destroy;
|
2451 |
begin
|
2452 |
(FStatement as TInterfaceOwner).Remove(self);
|
2453 |
inherited Destroy;
|
2454 |
end;
|
2455 |
|
2456 |
function TSQLParams.getCount: integer;
|
2457 |
begin
|
2458 |
CheckActive;
|
2459 |
Result := FSQLParams.ColumnsInUseCount;
|
2460 |
end;
|
2461 |
|
2462 |
function TSQLParams.getSQLParam(index: integer): ISQLParam;
|
2463 |
begin
|
2464 |
CheckActive;
|
2465 |
if (index < 0) or (index >= getCount) then
|
2466 |
IBError(ibxeInvalidColumnIndex,[nil]);
|
2467 |
|
2468 |
if getCount = 0 then
|
2469 |
Result := nil
|
2470 |
else
|
2471 |
begin
|
2472 |
if not HasInterface(index) then
|
2473 |
AddInterface(index, TSQLParam.Create(self,FSQLParams.Column[index]));
|
2474 |
Result := TSQLParam(GetInterface(index));
|
2475 |
end;
|
2476 |
end;
|
2477 |
|
2478 |
function TSQLParams.ByName(Idx: AnsiString): ISQLParam;
|
2479 |
var aIBXSQLVAR: TSQLVarData;
|
2480 |
begin
|
2481 |
CheckActive;
|
2482 |
aIBXSQLVAR := FSQLParams.ColumnByName(Idx);
|
2483 |
if aIBXSQLVAR = nil then
|
2484 |
IBError(ibxeFieldNotFound,[Idx]);
|
2485 |
Result := getSQLParam(aIBXSQLVAR.index);
|
2486 |
end;
|
2487 |
|
2488 |
function TSQLParams.GetModified: Boolean;
|
2489 |
var
|
2490 |
i: Integer;
|
2491 |
begin
|
2492 |
CheckActive;
|
2493 |
result := False;
|
2494 |
with FSQLParams do
|
2495 |
for i := 0 to Count - 1 do
|
2496 |
if Column[i].Modified then
|
2497 |
begin
|
2498 |
result := True;
|
2499 |
exit;
|
2500 |
end;
|
2501 |
end;
|
2502 |
|
2503 |
{ TResults }
|
2504 |
|
2505 |
procedure TResults.CheckActive;
|
2506 |
begin
|
2507 |
if not FResults.StateChanged(FChangeSeqNo) then Exit;
|
2508 |
|
2509 |
if FPrepareSeqNo < FResults.PrepareSeqNo then
|
2510 |
IBError(ibxeInterfaceOutofDate,[nil]);
|
2511 |
|
2512 |
if not FResults.CheckStatementStatus(ssPrepared) then
|
2513 |
IBError(ibxeStatementNotPrepared, [nil]);
|
2514 |
|
2515 |
with GetTransaction as TFBTransaction do
|
2516 |
if not InTransaction or (FResults.TransactionSeqNo <> FTransactionSeqNo) then
|
2517 |
IBError(ibxeInterfaceOutofDate,[nil]);
|
2518 |
end;
|
2519 |
|
2520 |
function TResults.GetISQLData(aIBXSQLVAR: TSQLVarData): ISQLData;
|
2521 |
begin
|
2522 |
if (aIBXSQLVAR.Index < 0) or (aIBXSQLVAR.Index >= getCount) then
|
2523 |
IBError(ibxeInvalidColumnIndex,[nil]);
|
2524 |
|
2525 |
if not HasInterface(aIBXSQLVAR.Index) then
|
2526 |
AddInterface(aIBXSQLVAR.Index, TIBSQLData.Create(self,aIBXSQLVAR));
|
2527 |
Result := TIBSQLData(GetInterface(aIBXSQLVAR.Index));
|
2528 |
end;
|
2529 |
|
2530 |
constructor TResults.Create(aResults: TSQLDataArea);
|
2531 |
begin
|
2532 |
inherited Create(aResults.Count);
|
2533 |
FResults := aResults;
|
2534 |
FStatement := aResults.Statement;
|
2535 |
FPrepareSeqNo := aResults.PrepareSeqNo;
|
2536 |
FTransactionSeqNo := aResults.TransactionSeqNo;
|
2537 |
FResults.StateChanged(FChangeSeqNo);
|
2538 |
end;
|
2539 |
|
2540 |
function TResults.getCount: integer;
|
2541 |
begin
|
2542 |
CheckActive;
|
2543 |
Result := FResults.Count;
|
2544 |
end;
|
2545 |
|
2546 |
function TResults.ByName(Idx: AnsiString): ISQLData;
|
2547 |
var col: TSQLVarData;
|
2548 |
begin
|
2549 |
Result := nil;
|
2550 |
CheckActive;
|
2551 |
if FResults.CheckStatementStatus(ssBOF) then
|
2552 |
IBError(ibxeBOF,[nil]);
|
2553 |
if FResults.CheckStatementStatus(ssEOF) then
|
2554 |
IBError(ibxeEOF,[nil]);
|
2555 |
|
2556 |
if FResults.Count > 0 then
|
2557 |
begin
|
2558 |
col := FResults.ColumnByName(Idx);
|
2559 |
if col <> nil then
|
2560 |
Result := GetISQLData(col);
|
2561 |
end;
|
2562 |
end;
|
2563 |
|
2564 |
function TResults.getSQLData(index: integer): ISQLData;
|
2565 |
begin
|
2566 |
CheckActive;
|
2567 |
if FResults.CheckStatementStatus(ssBOF) then
|
2568 |
IBError(ibxeBOF,[nil]);
|
2569 |
if FResults.CheckStatementStatus(ssEOF) then
|
2570 |
IBError(ibxeEOF,[nil]);
|
2571 |
if (index < 0) or (index >= FResults.Count) then
|
2572 |
IBError(ibxeInvalidColumnIndex,[nil]);
|
2573 |
|
2574 |
Result := GetISQLData(FResults.Column[index]);
|
2575 |
end;
|
2576 |
|
2577 |
procedure TResults.GetData(index: integer; var IsNull: boolean; var len: short;
|
2578 |
var data: PByte);
|
2579 |
begin
|
2580 |
CheckActive;
|
2581 |
FResults.GetData(index,IsNull, len,data);
|
2582 |
end;
|
2583 |
|
2584 |
function TResults.GetTransaction: ITransaction;
|
2585 |
begin
|
2586 |
Result := FStatement.GetTransaction;
|
2587 |
end;
|
2588 |
|
2589 |
procedure TResults.SetRetainInterfaces(aValue: boolean);
|
2590 |
begin
|
2591 |
RetainInterfaces := aValue;
|
2592 |
end;
|
2593 |
|
2594 |
end.
|
2595 |
|