Classe TRESTDWCustomDataSet

Unit

uRESTDWDataset

Declaração

type TRESTDWCustomDataSet = class(TDataSet)

Descrição

Hierarquia

• TDataSet
• TRESTDWCustomDataSet

Visão Geral

Métodos

	Function AllocRecordBuffer: TRecordBuffer; Override;
	Function CanSetData: Boolean; Virtual;
	Procedure CheckDefaults;
	Procedure CheckFieldCompatibility(Field : TField; FieldDef : TFieldDef);
	Procedure CheckInactive; Override;
	Procedure CopyFrom(DataSet : TDataSet; ACount : Integer); Virtual; Abstract;
	Procedure GetBookmarkData(Buffer : TRecordBuffer; Data : Pointer); Override;
	Function GetBookmarkFlag(Buffer : TRecordBuffer) : TBookmarkFlag; Override;
	Function GetRecord(Buffer : TRecordBuffer; GetMode : TGetMode; DoCheck : Boolean) : TGetResult; Override;
	Procedure FreeRecordBuffer(Var Buffer : TRecordBuffer); Override;
	Procedure InternalGotoBookmark(Bookmark : Pointer); Override;
	Procedure InternalInitRecord(Buffer : TRecordBuffer); Override;
	Procedure InternalLoadCurrentRecord(Buffer : TRecordBuffer);
	Procedure InternalSetToRecord(Buffer : TRecordBuffer); Override;
	Procedure SetBookmarkData(Buffer : TRecordBuffer; Data : Pointer); Override;
	Procedure SetBookmarkFlag(Buffer : TRecordBuffer; Value : TBookmarkFlag); Override;
	Function GetRecNo: Longint; Override;
	Function GetRecordCount: Longint; Override;
	Function GetControlInterface: IInterface; Virtual;
	Function GetFieldClass(FieldType : TFieldType) : TFieldClass; Override;
	Procedure InternalFirst; Override;
	Procedure InternalInitFieldDefs; Override;
	Procedure InternalLast; Override;
	Function IsCursorOpen: Boolean; Override;
	Procedure SetBlobStream(Stream : TStream);
	Procedure SetFieldData(Field : TField; Buffer : Pointer); Overload; Override;
	Procedure SetFiltered(Value : Boolean); Override;
	Procedure SetRecNo(Value : Integer); Override;
	Procedure RaiseError(Fmt : String; Args : Array of const);
	Procedure SaveDataToStream(F : TStream; SaveData : Boolean);
	Procedure LoadDataFromStream(F : TStream);
	Procedure CheckMarker(F : TStream; Marker : Integer);
	Procedure WriteMarker(F : TStream; Marker : Integer);
	Procedure ReadFieldDefsFromStream(F : TStream);
	Procedure SaveFieldDefsToStream(F : TStream);
	Constructor Create(AOwner : TComponent); Override;
	Destructor Destroy; Override;
	Procedure Loaded; Override;
	Procedure AcceptCustomIndex(List : TCustomIndexList);
	Procedure Assign(Source : TPersistent); Reintroduce; Overload; Override;
	Function BookmarkValid(Bookmark : TBookmark) : Boolean; Override;
	Function CompareBookmarks(Bookmark1, Bookmark2 : TBookmark) : Integer; Override;
	Function CreateBlobStream(Field : TField; Mode : TBlobStreamMode): TStream; Override;
	Procedure DesignNotify(Const AFieldName : String; Dummy : Integer); Virtual;
	Function GetFieldData(Field : TField; Buffer : Pointer) : Boolean; Overload; Override;
	Procedure LoadFromFile(Const FileName : String);
	Procedure SaveToStream(F : TStream);
	Procedure LoadFromStream(Stream : TStream);
	Function Locate(Const KeyFields : String; Const KeyValues : Variant; Options : TLocateOptions) : Boolean; Override;
	Function LocateNext(Const KeyFields : String; Const KeyValues : Variant; Options : TLocateOptions) : Boolean;
	Function Lookup(Const KeyFields : String; Const KeyValues : Variant; Const ResultFields : String) : Variant; Override;
	Procedure SetRecordCount(AValue : Integer);
	Procedure SortLocal(Const Name : String; Const Descs : Array of Boolean; CaseInsensitive : Boolean = False);

Propriedades

	property Defaults : TStrings Read FNewDefaults Write SetNewDefaults;
	property KeyField : String Read FKeyField Write SetKeyField;
	property RestrictLength : TRestrictLength Read GetRestrictLength Write SetRestrictLength;
	property DataByCell[ConstFieldName:String;RecNo:Integer]: Variant Read GetDataByCell;
	property DataByName[ConstName:String]: Variant Read GetDataByName Write SetDataByName;
	property Options : TRESTDWMemtableOptionsD Read FOptions Write FOptions;
	property TableDefs : TStrings Read FTableDefs Write SetTableDefs;
	property TableState : TRESTDWMemtableState Read FState;
	property OnFiltered : TDataSetNotifyEvent Read FOnFiltered Write FOnFiltered;
	property DatabaseCharSet : TDatabaseCharSet Read vDatabaseCharSet Write SetDatabaseCharSet;
	property Active;
	property BeforeOpen;
	property AfterOpen;
	property BeforeClose;
	property AfterClose;
	property BeforeInsert;
	property BeforeEdit;
	property AfterEdit;
	property AfterPost;
	property BeforeCancel;
	property AfterCancel;
	property BeforeDelete;
	property AfterDelete;
	property BeforeScroll;
	property AfterScroll;
	property OnCalcFields;
	property OnDeleteError;
	property OnEditError;
	property OnNewRecord;
	property OnPostError;
	property Encoding : TEncodeSelect Read vEncoding Write SetEncoding;
	property OnWriterProcess : TOnWriterProcess Read vOnWriterProcess Write vOnWriterProcess;
	property AboutInfo : TRESTDWAboutInfoDS Read fsAbout Write fsAbout Stored False;

Descrição

Métodos

	Function AllocRecordBuffer: TRecordBuffer; Override;

	Function CanSetData: Boolean; Virtual;

	Procedure CheckDefaults;

	Procedure CheckFieldCompatibility(Field : TField; FieldDef : TFieldDef);

	Procedure CheckInactive; Override;

	Procedure CopyFrom(DataSet : TDataSet; ACount : Integer); Virtual; Abstract;

	Procedure GetBookmarkData(Buffer : TRecordBuffer; Data : Pointer); Override;

	Function GetBookmarkFlag(Buffer : TRecordBuffer) : TBookmarkFlag; Override;

	Function GetRecord(Buffer : TRecordBuffer; GetMode : TGetMode; DoCheck : Boolean) : TGetResult; Override;

	Procedure FreeRecordBuffer(Var Buffer : TRecordBuffer); Override;

	Procedure InternalGotoBookmark(Bookmark : Pointer); Override;

	Procedure InternalInitRecord(Buffer : TRecordBuffer); Override;

	Procedure InternalLoadCurrentRecord(Buffer : TRecordBuffer);

	Procedure InternalSetToRecord(Buffer : TRecordBuffer); Override;

	Procedure SetBookmarkData(Buffer : TRecordBuffer; Data : Pointer); Override;

	Procedure SetBookmarkFlag(Buffer : TRecordBuffer; Value : TBookmarkFlag); Override;

	Function GetRecNo: Longint; Override;

	Function GetRecordCount: Longint; Override;

	Function GetControlInterface: IInterface; Virtual;

	Function GetFieldClass(FieldType : TFieldType) : TFieldClass; Override;

	Procedure InternalFirst; Override;

	Procedure InternalInitFieldDefs; Override;

	Procedure InternalLast; Override;

	Function IsCursorOpen: Boolean; Override;

	Procedure SetBlobStream(Stream : TStream);

	Procedure SetFieldData(Field : TField; Buffer : Pointer); Overload; Override;

	Procedure SetFiltered(Value : Boolean); Override;

	Procedure SetRecNo(Value : Integer); Override;

	Procedure RaiseError(Fmt : String; Args : Array of const);

	Procedure SaveDataToStream(F : TStream; SaveData : Boolean);

	Procedure LoadDataFromStream(F : TStream);

	Procedure CheckMarker(F : TStream; Marker : Integer);

	Procedure WriteMarker(F : TStream; Marker : Integer);

	Procedure ReadFieldDefsFromStream(F : TStream);

	Procedure SaveFieldDefsToStream(F : TStream);

	Constructor Create(AOwner : TComponent); Override;

	Destructor Destroy; Override;

	Procedure Loaded; Override;

	Procedure AcceptCustomIndex(List : TCustomIndexList);

	Procedure Assign(Source : TPersistent); Reintroduce; Overload; Override;

	Function BookmarkValid(Bookmark : TBookmark) : Boolean; Override;

	Function CompareBookmarks(Bookmark1, Bookmark2 : TBookmark) : Integer; Override;

	Function CreateBlobStream(Field : TField; Mode : TBlobStreamMode): TStream; Override;

	Procedure DesignNotify(Const AFieldName : String; Dummy : Integer); Virtual;

	Function GetFieldData(Field : TField; Buffer : Pointer) : Boolean; Overload; Override;

	Procedure LoadFromFile(Const FileName : String);

	Procedure SaveToStream(F : TStream);

	Procedure LoadFromStream(Stream : TStream);

	Function Locate(Const KeyFields : String; Const KeyValues : Variant; Options : TLocateOptions) : Boolean; Override;

	Function LocateNext(Const KeyFields : String; Const KeyValues : Variant; Options : TLocateOptions) : Boolean;

	Function Lookup(Const KeyFields : String; Const KeyValues : Variant; Const ResultFields : String) : Variant; Override;

	Procedure SetRecordCount(AValue : Integer);

	Procedure SortLocal(Const Name : String; Const Descs : Array of Boolean; CaseInsensitive : Boolean = False);

Propriedades

	property Defaults : TStrings Read FNewDefaults Write SetNewDefaults;

	property KeyField : String Read FKeyField Write SetKeyField;
Property NullDefaults: TStrings Read FNewDefaults Write SetNewDefaults stored False; backward compatibility

	property RestrictLength : TRestrictLength Read GetRestrictLength Write SetRestrictLength;

	property DataByCell[ConstFieldName:String;RecNo:Integer]: Variant Read GetDataByCell;

	property DataByName[ConstName:String]: Variant Read GetDataByName Write SetDataByName;

	property Options : TRESTDWMemtableOptionsD Read FOptions Write FOptions;

	property TableDefs : TStrings Read FTableDefs Write SetTableDefs;

	property TableState : TRESTDWMemtableState Read FState;

	property OnFiltered : TDataSetNotifyEvent Read FOnFiltered Write FOnFiltered;

	property DatabaseCharSet : TDatabaseCharSet Read vDatabaseCharSet Write SetDatabaseCharSet;

	property Active;
redeclared data set properties

	property BeforeOpen;

	property AfterOpen;

	property BeforeClose;

	property AfterClose;

	property BeforeInsert;

	property BeforeEdit;

	property AfterEdit;

	property AfterPost;

	property BeforeCancel;

	property AfterCancel;

	property BeforeDelete;

	property AfterDelete;

	property BeforeScroll;

	property AfterScroll;

	property OnCalcFields;

	property OnDeleteError;

	property OnEditError;

	property OnNewRecord;

	property OnPostError;

	property Encoding : TEncodeSelect Read vEncoding Write SetEncoding;

	property OnWriterProcess : TOnWriterProcess Read vOnWriterProcess Write vOnWriterProcess;

	property AboutInfo : TRESTDWAboutInfoDS Read fsAbout Write fsAbout Stored False;

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