571 lines
20 KiB
ObjectPascal
571 lines
20 KiB
ObjectPascal
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{******************************************}
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{ }
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{ FastScript v1.9 }
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{ DB.pas classes and functions }
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{ }
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{ (c) 2003-2007 by Alexander Tzyganenko, }
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{ Fast Reports Inc }
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{ }
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{******************************************}
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unit FMX.fs_idbrtti;
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interface
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{$i fs.inc}
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uses
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System.Types, System.SysUtils, System.Classes, FMX.fs_iinterpreter, FMX.fs_itools, FMX.fs_iclassesrtti, FMX.fs_ievents,
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Data.DB, FMX.Types;
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type
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{$i frxPlatformsAttribute.inc}
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TfsDBRTTI = class(TComponent); // fake component
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TfsDatasetNotifyEvent = class(TfsCustomEvent)
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public
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procedure DoEvent(Dataset: TDataset);
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function GetMethod: Pointer; override;
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end;
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TfsFilterRecordEvent = class(TfsCustomEvent)
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public
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procedure DoEvent(DataSet: TDataSet; var Accept: Boolean);
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function GetMethod: Pointer; override;
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end;
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TfsFieldGetTextEvent = class(TfsCustomEvent)
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public
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procedure DoEvent(Sender: TField; var Text: String; DisplayText: Boolean);
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function GetMethod: Pointer; override;
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end;
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implementation
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type
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TFunctions = class(TfsRTTIModule)
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private
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function CallMethod(Instance: TObject; ClassType: TClass;
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const MethodName: String; Caller: TfsMethodHelper): Variant;
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function GetProp(Instance: TObject; ClassType: TClass;
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const PropName: String): Variant;
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procedure SetProp(Instance: TObject; ClassType: TClass;
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const PropName: String; Value: Variant);
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public
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constructor Create(AScript: TfsScript); override;
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end;
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{ TfsDatasetNotifyEvent }
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procedure TfsDatasetNotifyEvent.DoEvent(Dataset: TDataset);
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begin
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CallHandler([Dataset]);
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end;
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function TfsDatasetNotifyEvent.GetMethod: Pointer;
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begin
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Result := @TfsDatasetNotifyEvent.DoEvent;
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end;
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{ TfsFilterRecordEvent }
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procedure TfsFilterRecordEvent.DoEvent(DataSet: TDataSet; var Accept: Boolean);
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begin
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CallHandler([DataSet, Accept]);
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Accept := Handler.Params[1].Value;
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end;
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function TfsFilterRecordEvent.GetMethod: Pointer;
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begin
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Result := @TfsFilterRecordEvent.DoEvent;
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end;
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{ TfsFieldGetTextEvent }
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procedure TfsFieldGetTextEvent.DoEvent(Sender: TField; var Text: String; DisplayText: Boolean);
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begin
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CallHandler([Sender, Text, DisplayText]);
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Text := Handler.Params[1].Value;
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end;
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function TfsFieldGetTextEvent.GetMethod: Pointer;
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begin
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Result := @TfsFieldGetTextEvent.DoEvent;
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end;
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{ TFunctions }
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constructor TFunctions.Create(AScript: TfsScript);
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begin
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inherited Create(AScript);
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with AScript do
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begin
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AddEnum('TFieldType', 'ftUnknown, ftString, ftSmallint, ftInteger, ftWord,' +
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'ftBoolean, ftFloat, ftCurrency, ftBCD, ftDate, ftTime, ftDateTime,' +
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'ftBytes, ftVarBytes, ftAutoInc, ftBlob, ftMemo, ftGraphic, ftFmtMemo,' +
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'ftParadoxOle, ftDBaseOle, ftTypedBinary, ftCursor, ftFixedChar, ftWideString,' +
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'ftLargeint, ftADT, ftArray, ftReference, ftDataSet, ftOraBlob, ftOraClob,' +
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'ftVariant, ftInterface, ftIDispatch, ftGuid, ftTimeStamp, ftFMTBcd');
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AddEnum('TBlobStreamMode', 'bmRead, bmWrite, bmReadWrite');
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AddEnumSet('TLocateOptions', 'loCaseInsensitive, loPartialKey');
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AddEnumSet('TFilterOptions', 'foCaseInsensitive, foNoPartialCompare');
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AddEnum('TParamType', 'ptUnknown, ptInput, ptOutput, ptInputOutput, ptResult');
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with AddClass(TField, 'TComponent') do
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begin
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AddProperty('AsBoolean', 'Boolean', GetProp, SetProp);
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AddProperty('AsCurrency', 'Currency', GetProp, SetProp);
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AddProperty('AsDateTime', 'TDateTime', GetProp, SetProp);
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AddProperty('AsFloat', 'Double', GetProp, SetProp);
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AddProperty('AsInteger', 'Integer', GetProp, SetProp);
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AddProperty('AsString', 'String', GetProp, SetProp);
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AddProperty('AsVariant', 'Variant', GetProp, SetProp);
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AddProperty('DataType', 'TFieldType', GetProp, nil);
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AddProperty('DisplayName', 'String', GetProp, nil);
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AddProperty('DisplayText', 'String', GetProp, nil);
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AddProperty('IsNull', 'Boolean', GetProp, nil);
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AddProperty('Size', 'Integer', GetProp, SetProp);
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AddProperty('Value', 'Variant', GetProp, SetProp);
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AddProperty('OldValue', 'Variant', GetProp, nil);
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AddEvent('OnGetText', TfsFieldGetTextEvent);
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end;
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with AddClass(TFields, 'TObject') do
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AddDefaultProperty('Fields', 'Integer', 'TField', CallMethod, True);
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AddClass(TStringField, 'TField');
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AddClass(TNumericField, 'TField');
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AddClass(TIntegerField, 'TNumericField');
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AddClass(TSmallIntField, 'TIntegerField');
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AddClass(TWordField, 'TIntegerField');
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AddClass(TAutoIncField, 'TIntegerField');
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AddClass(TFloatField, 'TNumericField');
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AddClass(TCurrencyField, 'TFloatField');
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AddClass(TBooleanField, 'TField');
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AddClass(TDateTimeField, 'TField');
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AddClass(TDateField, 'TDateTimeField');
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AddClass(TTimeField, 'TDateTimeField');
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AddClass(TBinaryField, 'TField');
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AddClass(TBytesField, 'TBinaryField');
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AddClass(TVarBytesField, 'TBinaryField');
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AddClass(TBCDField, 'TNumericField');
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with AddClass(TBlobField, 'TField') do
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begin
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AddMethod('procedure LoadFromFile(const FileName: String)', CallMethod);
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AddMethod('procedure LoadFromStream(Stream: TStream)', CallMethod);
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AddMethod('procedure SaveToFile(const FileName: String)', CallMethod);
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AddMethod('procedure SaveToStream(Stream: TStream)', CallMethod);
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end;
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AddClass(TMemoField, 'TBlobField');
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AddClass(TGraphicField, 'TBlobField');
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AddClass(TFieldDef, 'TPersistent');
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with AddClass(TFieldDefs, 'TObject') do
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begin
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AddMethod('function AddFieldDef: TFieldDef', CallMethod);
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AddMethod('function Find(const Name: string): TFieldDef', CallMethod);
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AddMethod('procedure Add(const Name: string; DataType: TFieldType; Size: Word; Required: Boolean)', CallMethod);
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AddMethod('procedure Clear', CallMethod);
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AddMethod('procedure Update', CallMethod);
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AddDefaultProperty('Items', 'Integer', 'TFieldDef', CallMethod, True);
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end;
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AddClass(TDataSource, 'TComponent');
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AddType('TBookmark', fvtVariant);
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with AddClass(TDataSet, 'TComponent') do
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begin
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AddMethod('procedure Open', CallMethod);
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AddMethod('procedure Close', CallMethod);
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AddMethod('procedure First', CallMethod);
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AddMethod('procedure Last', CallMethod);
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AddMethod('procedure Next', CallMethod);
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AddMethod('procedure Prior', CallMethod);
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AddMethod('procedure Cancel', CallMethod);
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AddMethod('procedure Delete', CallMethod);
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AddMethod('procedure Post', CallMethod);
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AddMethod('procedure Append', CallMethod);
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AddMethod('procedure Insert', CallMethod);
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AddMethod('procedure Edit', CallMethod);
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AddMethod('function FieldByName(const FieldName: string): TField', CallMethod);
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AddMethod('procedure GetFieldNames(List: TStrings)', CallMethod);
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AddMethod('function FindFirst: Boolean', CallMethod);
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AddMethod('function FindLast: Boolean', CallMethod);
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AddMethod('function FindNext: Boolean', CallMethod);
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AddMethod('function FindPrior: Boolean', CallMethod);
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AddMethod('procedure FreeBookmark(Bookmark: TBookmark)', CallMethod);
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AddMethod('function GetBookmark: TBookmark', CallMethod);
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AddMethod('procedure GotoBookmark(Bookmark: TBookmark)', CallMethod);
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AddMethod('function Locate(const KeyFields: string; const KeyValues: Variant;' +
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'Options: TLocateOptions): Boolean', CallMethod);
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AddMethod('function IsEmpty: Boolean', CallMethod);
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AddMethod('procedure EnableControls', CallMethod);
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AddMethod('procedure DisableControls', CallMethod);
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AddProperty('Bof', 'Boolean', GetProp, nil);
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AddProperty('Eof', 'Boolean', GetProp, nil);
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AddProperty('FieldCount', 'Integer', GetProp, nil);
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AddProperty('FieldDefs', 'TFieldDefs', GetProp, nil);
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AddProperty('Fields', 'TFields', GetProp, nil);
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AddProperty('Filter', 'string', GetProp, SetProp);
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AddProperty('Filtered', 'Boolean', GetProp, SetProp);
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AddProperty('FilterOptions', 'TFilterOptions', GetProp, SetProp);
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AddProperty('Active', 'Boolean', GetProp, SetProp);
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AddEvent('BeforeOpen', TfsDatasetNotifyEvent);
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AddEvent('AfterOpen', TfsDatasetNotifyEvent);
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AddEvent('BeforeClose', TfsDatasetNotifyEvent);
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AddEvent('AfterClose', TfsDatasetNotifyEvent);
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AddEvent('BeforeInsert', TfsDatasetNotifyEvent);
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AddEvent('AfterInsert', TfsDatasetNotifyEvent);
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AddEvent('BeforeEdit', TfsDatasetNotifyEvent);
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AddEvent('AfterEdit', TfsDatasetNotifyEvent);
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AddEvent('BeforePost', TfsDatasetNotifyEvent);
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AddEvent('AfterPost', TfsDatasetNotifyEvent);
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AddEvent('BeforeCancel', TfsDatasetNotifyEvent);
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AddEvent('AfterCancel', TfsDatasetNotifyEvent);
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AddEvent('BeforeDelete', TfsDatasetNotifyEvent);
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AddEvent('AfterDelete', TfsDatasetNotifyEvent);
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AddEvent('BeforeScroll', TfsDatasetNotifyEvent);
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AddEvent('AfterScroll', TfsDatasetNotifyEvent);
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AddEvent('OnCalcFields', TfsDatasetNotifyEvent);
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AddEvent('OnFilterRecord', TfsFilterRecordEvent);
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AddEvent('OnNewRecord', TfsDatasetNotifyEvent);
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end;
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with AddClass(TParam, 'TPersistent') do
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begin
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AddMethod('procedure Clear', CallMethod);
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AddProperty('AsBoolean', 'Boolean', GetProp, SetProp);
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AddProperty('AsCurrency', 'Currency', GetProp, SetProp);
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AddProperty('AsDateTime', 'TDateTime', GetProp, SetProp);
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AddProperty('AsFloat', 'Double', GetProp, SetProp);
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AddProperty('AsInteger', 'Integer', GetProp, SetProp);
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AddProperty('AsDate', 'TDate', GetProp, SetProp);
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AddProperty('AsTime', 'TTime', GetProp, SetProp);
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AddProperty('AsString', 'String', GetProp, SetProp);
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AddProperty('Bound', 'Boolean', GetProp, SetProp);
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AddProperty('IsNull', 'Boolean', GetProp, nil);
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AddProperty('Text', 'String', GetProp, SetProp);
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end;
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with AddClass(TParams, 'TPersistent') do
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begin
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AddMethod('function ParamByName(const Value: string): TParam', CallMethod);
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AddMethod('function FindParam(const Value: string): TParam', CallMethod);
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AddDefaultProperty('Items', 'Integer', 'TParam', CallMethod, True);
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end;
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end;
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end;
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function TFunctions.CallMethod(Instance: TObject; ClassType: TClass;
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const MethodName: String; Caller: TfsMethodHelper): Variant;
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var
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_TDataSet: TDataSet;
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function IntToLocateOptions(i: Integer): TLocateOptions;
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begin
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Result := [];
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if (i and 1) <> 0 then
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Result := Result + [loCaseInsensitive];
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if (i and 2) <> 0 then
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Result := Result + [loPartialKey];
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end;
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begin
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Result := 0;
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if ClassType = TFields then
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begin
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if MethodName = 'FIELDS.GET' then
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Result := frxInteger(TFields(Instance)[Caller.Params[0]])
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end
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else if ClassType = TFieldDefs then
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begin
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if MethodName = 'ITEMS.GET' then
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Result := frxInteger(TFieldDefs(Instance)[Caller.Params[0]])
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else if MethodName = 'ADD' then
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TFieldDefs(Instance).Add(Caller.Params[0], TFieldType(Caller.Params[1]), Caller.Params[2], Caller.Params[3])
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else if MethodName = 'ADDFIELDDEF' then
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Result := frxInteger(TFieldDefs(Instance).AddFieldDef)
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else if MethodName = 'CLEAR' then
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TFieldDefs(Instance).Clear
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else if MethodName = 'FIND' then
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Result := frxInteger(TFieldDefs(Instance).Find(Caller.Params[0]))
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else if MethodName = 'UPDATE' then
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TFieldDefs(Instance).Update
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end
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else if ClassType = TBlobField then
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begin
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if MethodName = 'LOADFROMFILE' then
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TBlobField(Instance).LoadFromFile(Caller.Params[0])
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else if MethodName = 'LOADFROMSTREAM' then
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TBlobField(Instance).LoadFromStream(TStream(frxInteger(Caller.Params[0])))
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else if MethodName = 'SAVETOFILE' then
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TBlobField(Instance).SaveToFile(Caller.Params[0])
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else if MethodName = 'SAVETOSTREAM' then
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TBlobField(Instance).SaveToStream(TStream(frxInteger(Caller.Params[0])))
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end
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else if ClassType = TDataSet then
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begin
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_TDataSet := TDataSet(Instance);
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if MethodName = 'OPEN' then
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_TDataSet.Open
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else if MethodName = 'CLOSE' then
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_TDataSet.Close
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else if MethodName = 'FIRST' then
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_TDataSet.First
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else if MethodName = 'LAST' then
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_TDataSet.Last
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else if MethodName = 'NEXT' then
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_TDataSet.Next
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else if MethodName = 'PRIOR' then
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_TDataSet.Prior
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else if MethodName = 'CANCEL' then
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_TDataSet.Cancel
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else if MethodName = 'DELETE' then
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_TDataSet.Delete
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else if MethodName = 'POST' then
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_TDataSet.Post
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else if MethodName = 'APPEND' then
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_TDataSet.Append
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else if MethodName = 'INSERT' then
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_TDataSet.Insert
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else if MethodName = 'EDIT' then
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_TDataSet.Edit
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else if MethodName = 'FIELDBYNAME' then
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Result := frxInteger(_TDataSet.FieldByName(Caller.Params[0]))
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else if MethodName = 'GETFIELDNAMES' then
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_TDataSet.GetFieldNames(TStrings(frxInteger(Caller.Params[0])))
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else if MethodName = 'FINDFIRST' then
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Result := _TDataSet.FindFirst
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else if MethodName = 'FINDLAST' then
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Result := _TDataSet.FindLast
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else if MethodName = 'FINDNEXT' then
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Result := _TDataSet.FindNext
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else if MethodName = 'FINDPRIOR' then
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Result := _TDataSet.FindPrior
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else if MethodName = 'FREEBOOKMARK' then
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_TDataSet.FreeBookmark(TBookMark(frxInteger(Caller.Params[0])))
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{$IFNDEF CPUX64}
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else if MethodName = 'GETBOOKMARK' then
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Result := frxInteger(_TDataSet.GetBookmark)
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{$ENDIF}
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else if MethodName = 'GOTOBOOKMARK' then
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_TDataSet.GotoBookmark(TBookMark(frxInteger(Caller.Params[0])))
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else if MethodName = 'LOCATE' then
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Result := _TDataSet.Locate(Caller.Params[0], Caller.Params[1], IntToLocateOptions(Caller.Params[2]))
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else if MethodName = 'ISEMPTY' then
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Result := _TDataSet.IsEmpty
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else if MethodName = 'ENABLECONTROLS' then
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_TDataSet.EnableControls
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else if MethodName = 'DISABLECONTROLS' then
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_TDataSet.DisableControls
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end
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else if ClassType = TParam then
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begin
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if MethodName = 'CLEAR' then
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TParam(Instance).Clear
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end
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else if ClassType = TParams then
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begin
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if MethodName = 'PARAMBYNAME' then
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Result := frxInteger(TParams(Instance).ParamByName(Caller.Params[0]))
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else if MethodName = 'FINDPARAM' then
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Result := frxInteger(TParams(Instance).FindParam(Caller.Params[0]))
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else if MethodName = 'ITEMS.GET' then
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Result := frxInteger(TParams(Instance)[Caller.Params[0]])
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end
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end;
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function TFunctions.GetProp(Instance: TObject; ClassType: TClass;
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const PropName: String): Variant;
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var
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_TField: TField;
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_TParam: TParam;
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_TDataSet: TDataSet;
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function FilterOptionsToInt(f: TFilterOptions): Integer;
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begin
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Result := 0;
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if foCaseInsensitive in f then
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Result := Result or 1;
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if foNoPartialCompare in f then
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Result := Result or 2;
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end;
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begin
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Result := 0;
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if ClassType = TField then
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begin
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_TField := TField(Instance);
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if PropName = 'ASBOOLEAN' then
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Result := _TField.AsBoolean
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else if PropName = 'ASCURRENCY' then
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Result := _TField.AsCurrency
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else if PropName = 'ASDATETIME' then
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Result := _TField.AsDateTime
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else if PropName = 'ASFLOAT' then
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Result := _TField.AsFloat
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else if PropName = 'ASINTEGER' then
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Result := _TField.AsInteger
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else if PropName = 'ASSTRING' then
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Result := _TField.AsString
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else if PropName = 'ASVARIANT' then
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Result := _TField.AsVariant
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else if PropName = 'DATATYPE' then
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Result := _TField.DataType
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else if PropName = 'DISPLAYNAME' then
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Result := _TField.DisplayName
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else if PropName = 'DISPLAYTEXT' then
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Result := _TField.DisplayText
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else if PropName = 'ISNULL' then
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Result := _TField.IsNull
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else if PropName = 'SIZE' then
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Result := _TField.Size
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else if PropName = 'VALUE' then
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Result := _TField.Value
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else if PropName = 'OLDVALUE' then
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Result := _TField.OldValue
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end
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else if ClassType = TDataSet then
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begin
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_TDataSet := TDataSet(Instance);
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if PropName = 'BOF' then
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Result := _TDataSet.Bof
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else if PropName = 'EOF' then
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Result := _TDataSet.Eof
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else if PropName = 'FIELDCOUNT' then
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Result := _TDataSet.FieldCount
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else if PropName = 'FIELDDEFS' then
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Result := frxInteger(_TDataSet.FieldDefs)
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else if PropName = 'FIELDS' then
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Result := frxInteger(_TDataSet.Fields)
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else if PropName = 'FILTER' then
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Result := _TDataSet.Filter
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else if PropName = 'FILTERED' then
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Result := _TDataSet.Filtered
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else if PropName = 'FILTEROPTIONS' then
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Result := FilterOptionsToInt(_TDataSet.FilterOptions)
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else if PropName = 'ACTIVE' then
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Result := _TDataSet.Active
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end
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else if ClassType = TParam then
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begin
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_TParam := TParam(Instance);
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if PropName = 'BOUND' then
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Result := _TParam.Bound
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else if PropName = 'ISNULL' then
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Result := _TParam.IsNull
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else if PropName = 'TEXT' then
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Result := _TParam.Text
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else if PropName = 'ASBOOLEAN' then
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Result := _TParam.AsBoolean
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else if PropName = 'ASCURRENCY' then
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Result := _TParam.AsCurrency
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else if PropName = 'ASDATETIME' then
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|
Result := _TParam.AsDateTime
|
|
else if PropName = 'ASFLOAT' then
|
|
Result := _TParam.AsFloat
|
|
else if PropName = 'ASINTEGER' then
|
|
Result := _TParam.AsInteger
|
|
else if PropName = 'ASDATE' then
|
|
Result := _TParam.AsDate
|
|
else if PropName = 'ASTIME' then
|
|
Result := _TParam.AsTime
|
|
else if PropName = 'ASSTRING' then
|
|
Result := _TParam.AsString
|
|
end
|
|
end;
|
|
|
|
procedure TFunctions.SetProp(Instance: TObject; ClassType: TClass;
|
|
const PropName: String; Value: Variant);
|
|
var
|
|
_TField: TField;
|
|
_TParam: TParam;
|
|
_TDataSet: TDataSet;
|
|
|
|
function IntToFilterOptions(i: Integer): TFilterOptions;
|
|
begin
|
|
Result := [];
|
|
if (i and 1) <> 0 then
|
|
Result := Result + [foCaseInsensitive];
|
|
if (i and 2) <> 0 then
|
|
Result := Result + [foNoPartialCompare];
|
|
end;
|
|
|
|
begin
|
|
if ClassType = TField then
|
|
begin
|
|
_TField := TField(Instance);
|
|
if PropName = 'ASBOOLEAN' then
|
|
_TField.AsBoolean := Value
|
|
else if PropName = 'ASCURRENCY' then
|
|
_TField.AsCurrency := Value
|
|
else if PropName = 'ASDATETIME' then
|
|
_TField.AsDateTime := Value
|
|
else if PropName = 'ASFLOAT' then
|
|
_TField.AsFloat := Value
|
|
else if PropName = 'ASINTEGER' then
|
|
_TField.AsInteger := Value
|
|
else if PropName = 'ASSTRING' then
|
|
_TField.AsString := Value
|
|
else if PropName = 'ASVARIANT' then
|
|
_TField.AsVariant := Value
|
|
else if PropName = 'VALUE' then
|
|
_TField.Value := Value
|
|
else if PropName = 'SIZE' then
|
|
_TField.Size := Value
|
|
end
|
|
else if ClassType = TDataSet then
|
|
begin
|
|
_TDataSet := TDataSet(Instance);
|
|
if PropName = 'FILTER' then
|
|
_TDataSet.Filter := Value
|
|
else if PropName = 'FILTERED' then
|
|
_TDataSet.Filtered := Value
|
|
else if PropName = 'FILTEROPTIONS' then
|
|
_TDataSet.FilterOptions := IntToFilterOptions(Value)
|
|
else if PropName = 'ACTIVE' then
|
|
_TDataSet.Active := Value
|
|
end
|
|
else if ClassType = TParam then
|
|
begin
|
|
_TParam := TParam(Instance);
|
|
if PropName = 'ASBOOLEAN' then
|
|
_TParam.AsBoolean := Value
|
|
else if PropName = 'ASCURRENCY' then
|
|
_TParam.AsCurrency := Value
|
|
else if PropName = 'ASDATETIME' then
|
|
_TParam.AsDateTime := Value
|
|
else if PropName = 'ASFLOAT' then
|
|
_TParam.AsFloat := Value
|
|
else if PropName = 'ASINTEGER' then
|
|
_TParam.AsInteger := Value
|
|
else if PropName = 'ASDATE' then
|
|
_TParam.AsDate := Value
|
|
else if PropName = 'ASTIME' then
|
|
_TParam.AsTime := Value
|
|
else if PropName = 'ASSTRING' then
|
|
_TParam.AsString := Value
|
|
else if PropName = 'BOUND' then
|
|
_TParam.Bound := Value
|
|
else if PropName = 'TEXT' then
|
|
_TParam.Text := Value
|
|
end
|
|
end;
|
|
|
|
|
|
initialization
|
|
StartClassGroup(TFmxObject);
|
|
ActivateClassGroup(TFmxObject);
|
|
GroupDescendentsWith(TfsDBRTTI, TFmxObject);
|
|
fsRTTIModules.Add(TFunctions);
|
|
|
|
finalization
|
|
fsRTTIModules.Remove(TFunctions);
|
|
|
|
end.
|