david
5678df5538
git-svn-id: https://192.168.0.254/svn/Componentes.Terceros.DevExpressVCL@31 05c56307-c608-d34a-929d-697000501d7a
84 lines
3.5 KiB
ObjectPascal
84 lines
3.5 KiB
ObjectPascal
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{********************************************************************}
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{ }
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{ Developer Express Visual Component Library }
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{ ExpressDataController }
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{ }
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{ Copyright (c) 1998-2008 Developer Express Inc. }
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{ ALL RIGHTS RESERVED }
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{ }
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{ The entire contents of this file is protected by U.S. and }
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{ International Copyright Laws. Unauthorized reproduction, }
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{ reverse-engineering, and distribution of all or any portion of }
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{ the code contained in this file is strictly prohibited and may }
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{ result in severe civil and criminal penalties and will be }
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{ prosecuted to the maximum extent possible under the law. }
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{ }
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{ RESTRICTIONS }
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{ }
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{ THIS SOURCE CODE AND ALL RESULTING INTERMEDIATE FILES }
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{ (DCU, OBJ, DLL, ETC.) ARE CONFIDENTIAL AND PROPRIETARY TRADE }
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{ SECRETS OF DEVELOPER EXPRESS INC. THE REGISTERED DEVELOPER IS }
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{ LICENSED TO DISTRIBUTE THE EXPRESSDATACONTROLLER AND ALL }
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{ ACCOMPANYING VCL CONTROLS AS PART OF AN EXECUTABLE PROGRAM ONLY. }
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{ }
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{ THE SOURCE CODE CONTAINED WITHIN THIS FILE AND ALL RELATED }
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{ FILES OR ANY PORTION OF ITS CONTENTS SHALL AT NO TIME BE }
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{ COPIED, TRANSFERRED, SOLD, DISTRIBUTED, OR OTHERWISE MADE }
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{ AVAILABLE TO OTHER INDIVIDUALS WITHOUT EXPRESS WRITTEN CONSENT }
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{ AND PERMISSION FROM DEVELOPER EXPRESS INC. }
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{ }
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{ CONSULT THE END USER LICENSE AGREEMENT FOR INFORMATION ON }
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{ ADDITIONAL RESTRICTIONS. }
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{ }
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{********************************************************************}
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unit cxBDEAdapters;
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{$I cxVer.inc}
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interface
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uses
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DB, cxDBData, cxFilter, cxDBFilter;
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type
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{ TcxBDEFilterOperatorAdapter }
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TcxBDEFilterOperatorAdapter = class(TcxDBFilterOperatorAdapter)
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public
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procedure PrepareOperatorClass(ASender: TObject; ADataSet: TDataSet;
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var AOperatorClass: TcxFilterOperatorClass); override;
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end;
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implementation
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uses
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TypInfo, DBTables, cxVariants;
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{ TcxBDEFilterOperatorAdapter }
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procedure TcxBDEFilterOperatorAdapter.PrepareOperatorClass(ASender: TObject;
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ADataSet: TDataSet; var AOperatorClass: TcxFilterOperatorClass);
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begin
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if AOperatorClass.InheritsFrom(TcxFilterNullOperator) or
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AOperatorClass.InheritsFrom(TcxFilterNotNullOperator) then
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begin
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if ADataSet is TQuery then
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begin
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if AOperatorClass.InheritsFrom(TcxFilterNotNullOperator) then
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AOperatorClass := TcxFilterSQLNotNullOperator
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else
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AOperatorClass := TcxFilterSQLNullOperator;
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end;
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end;
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end;
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initialization
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cxFilterOperatorAdapters.RegisterAdapter(TQuery, TcxBDEFilterOperatorAdapter);
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finalization
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cxFilterOperatorAdapters.UnregisterAdapter(TQuery, TcxBDEFilterOperatorAdapter);
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end.
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