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root/public/ibx/trunk/runtime/IBCustomDataSet.pas

Comparing ibx/trunk/runtime/IBCustomDataSet.pas (file contents):
Revision 80 by tony, Mon Jan 1 11:31:07 2018 UTC vs.
Revision 104 by tony, Thu Jan 18 14:37:29 2018 UTC

#	Line 53 | Line 53 | uses
53		unix,
54		{$ENDIF}
55		SysUtils, Classes, IBDatabase, IBExternals, IB,  IBSQL, Db,
56	<	IBUtils, IBBlob, IBSQLParser;
56	>	IBUtils, IBBlob, IBSQLParser, IBDatabaseInfo;
57
58		const
59		BufferCacheSize    =  1000;  { Allocate cache in this many record chunks}
#	Line 76 | Line 76 | type
76		function GetSQL(UpdateKind: TUpdateKind): TStrings; virtual; abstract;
77		procedure InternalSetParams(Params: ISQLParams; buff: PChar); overload;
78		procedure InternalSetParams(Query: TIBSQL; buff: PChar); overload;
79	+	procedure UpdateRecordFromQuery(QryResults: IResults; Buffer: PChar);
80		property DataSet: TIBCustomDataSet read GetDataSet write SetDataSet;
81		public
82		constructor Create(AOwner: TComponent); override;
#	Line 208 | Line 209 | type
209		Note: y > 4 will default to Floats
210		}
211		TIBBCDField = class(TBCDField)
212	+	private
213	+	FIdentityColumn: boolean;
214		protected
215	+	procedure Bind(Binding: Boolean); override;
216		class procedure CheckTypeSize(Value: Integer); override;
217		function GetAsCurrency: Currency; override;
218		function GetAsString: string; override;
#	Line 216 | Line 220 | type
220		function GetDataSize: Integer; override;
221		public
222		constructor Create(AOwner: TComponent); override;
223	+	property IdentityColumn: boolean read FIdentityColumn;
224		published
225		property Size default 8;
226		end;
227
228	+	{The following integer field types extend the built in versions to enable IBX appplications
229	+	to check for an Identity column}
230	+
231	+	{ TIBSmallintField }
232	+
233	+	TIBSmallintField = class(TSmallintField)
234	+	private
235	+	FIdentityColumn: boolean;
236	+	protected
237	+	procedure Bind(Binding: Boolean); override;
238	+	public
239	+	property IdentityColumn: boolean read FIdentityColumn;
240	+	end;
241	+
242	+	{ TIBIntegerField }
243	+
244	+	TIBIntegerField = class(TIntegerField)
245	+	private
246	+	FIdentityColumn: boolean;
247	+	protected
248	+	procedure Bind(Binding: Boolean); override;
249	+	public
250	+	property IdentityColumn: boolean read FIdentityColumn;
251	+	end;
252	+
253	+	{ TIBLargeIntField }
254	+
255	+	TIBLargeIntField = class(TLargeIntField)
256	+	private
257	+	FIdentityColumn: boolean;
258	+	protected
259	+	procedure Bind(Binding: Boolean); override;
260	+	public
261	+	property IdentityColumn: boolean read FIdentityColumn;
262	+	end;
263	+
264		{TIBMemoField}
265		{Allows us to show truncated text in DBGrids and anything else that uses
266		DisplayText}
#	Line 274 | Line 315 | type
315		FFieldName: string;
316		FGeneratorName: string;
317		FIncrement: integer;
318	+	FQuery: TIBSQL;
319	+	function GetDatabase: TIBDatabase;
320	+	function GetTransaction: TIBTransaction;
321	+	procedure SetDatabase(AValue: TIBDatabase);
322	+	procedure SetGeneratorName(AValue: string);
323		procedure SetIncrement(const AValue: integer);
324	+	procedure SetTransaction(AValue: TIBTransaction);
325	+	procedure SetQuerySQL;
326		protected
327	<	function GetNextValue(ADatabase: TIBDatabase; ATransaction: TIBTransaction): integer;
327	>	function GetNextValue: integer;
328		public
329		constructor Create(Owner: TIBCustomDataSet);
330	+	destructor Destroy; override;
331		procedure Apply;
332		property Owner: TIBCustomDataSet read FOwner;
333	+	property Database: TIBDatabase read GetDatabase write SetDatabase;
334	+	property Transaction: TIBTransaction read GetTransaction write SetTransaction;
335		published
336	<	property Generator: string read FGeneratorName write FGeneratorName;
336	>	property Generator: string read FGeneratorName write SetGeneratorName;
337		property Field: string read FFieldName write FFieldName;
338		property Increment: integer read FIncrement write SetIncrement default 1;
339		property ApplyOnEvent: TIBGeneratorApplyOnEvent read FApplyOnEvent write FApplyOnEvent;
#	Line 360 | Line 411 | type
411		FQRefresh,
412		FQSelect,
413		FQModify: TIBSQL;
414	+	FDatabaseInfo: TIBDatabaseInfo;
415		FRecordBufferSize: Integer;
416		FRecordCount: Integer;
417		FRecordSize: Integer;
#	Line 389 | Line 441 | type
441		FInTransactionEnd: boolean;
442		FIBLinks: TList;
443		FFieldColumns: PFieldColumns;
444	+	procedure ColumnDataToBuffer(QryResults: IResults; ColumnIndex,
445	+	FieldIndex: integer; Buffer: PChar);
446		procedure InitModelBuffer(Qry: TIBSQL; Buffer: PChar);
447		function GetSelectStmtIntf: IStatement;
448		procedure SetUpdateMode(const Value: TUpdateMode);
#	Line 443 | Line 497 | type
497		procedure SetTransaction(Value: TIBTransaction);
498		procedure SetUpdateRecordTypes(Value: TIBUpdateRecordTypes);
499		procedure SetUniDirectional(Value: Boolean);
500	+	procedure UpdateRecordFromQuery(QryResults: IResults; Buffer: PChar);
501		procedure RefreshParams;
502		function AdjustPosition(FCache: PChar; Offset: DWORD;
503		Origin: Integer): DWORD;
#	Line 791 | Line 846 | type
846		FCharacterSetName: RawByteString;
847		FCharacterSetSize: integer;
848		FCodePage: TSystemCodePage;
849	+	FIdentityColumn: boolean;
850		FRelationName: string;
851		FDataSize: integer;
852		published
#	Line 801 | Line 857 | type
857		property RelationName: string read FRelationName write FRelationName;
858		property ArrayDimensions: integer read FArrayDimensions write FArrayDimensions;
859		property ArrayBounds: TArrayBounds read FArrayBounds write FArrayBounds;
860	+	property IdentityColumn: boolean read FIdentityColumn write FIdentityColumn default false;
861		end;
862
863		const
864		DefaultFieldClasses: array[TFieldType] of TFieldClass = (
865		nil,                { ftUnknown }
866		TIBStringField,     { ftString }
867	<	TSmallintField,     { ftSmallint }
868	<	TIntegerField,      { ftInteger }
867	>	TIBSmallintField,   { ftSmallint }
868	>	TIBIntegerField,      { ftInteger }
869		TWordField,         { ftWord }
870		TBooleanField,      { ftBoolean }
871		TFloatField,        { ftFloat }
#	Line 830 | Line 887 | DefaultFieldClasses: array[TFieldType] o
887		nil,                { ftCursor }
888		TStringField,       { ftFixedChar }
889		nil,    { ftWideString }
890	<	TLargeIntField,     { ftLargeInt }
890	>	TIBLargeIntField,     { ftLargeInt }
891		nil,          { ftADT }
892		TIBArrayField,        { ftArray }
893		nil,    { ftReference }
#	Line 874 | Line 931 | type
931		FieldName : String;
932		COMPUTED_BLR : Boolean;
933		DEFAULT_VALUE : boolean;
934	+	IDENTITY_COLUMN : boolean;
935		NextField : TFieldNode;
936		end;
937
#	Line 926 | Line 984 | type
984		Result := str;
985		end;
986
987	+	{ TIBLargeIntField }
988	+
989	+	procedure TIBLargeIntField.Bind(Binding: Boolean);
990	+	begin
991	+	inherited Bind(Binding);
992	+	if Binding and (FieldDef <> nil) then
993	+	FIdentityColumn := (FieldDef as TIBFieldDef).IdentityColumn;
994	+	end;
995	+
996	+	{ TIBIntegerField }
997	+
998	+	procedure TIBIntegerField.Bind(Binding: Boolean);
999	+	begin
1000	+	inherited Bind(Binding);
1001	+	if Binding and (FieldDef <> nil) then
1002	+	FIdentityColumn := (FieldDef as TIBFieldDef).IdentityColumn;
1003	+	end;
1004	+
1005	+	{ TIBSmallintField }
1006	+
1007	+	procedure TIBSmallintField.Bind(Binding: Boolean);
1008	+	begin
1009	+	inherited Bind(Binding);
1010	+	if Binding and (FieldDef <> nil) then
1011	+	FIdentityColumn := (FieldDef as TIBFieldDef).IdentityColumn;
1012	+	end;
1013	+
1014		{ TIBArray }
1015
1016		procedure TIBArray.EventHandler(Sender: IArray; Reason: TArrayEventReason);
#	Line 1035 | Line 1120 | begin
1120		{2: case 2 ignored. This should be handled by TIBWideMemo}
1121
1122		3, {Assume UNICODE_FSS is really UTF8}
1123	<	4: {Include GB18030 - assuming UTF8 routine work for this codeset}
1123	>	4: {Include GB18030 - assuming UTF8 routines work for this codeset}
1124		if DisplayWidth = 0 then
1125		Result := ValidUTF8String(TextToSingleLine(Result))
1126		else
#	Line 1237 | Line 1322 | begin
1322		Size := 8;
1323		end;
1324
1325	+	procedure TIBBCDField.Bind(Binding: Boolean);
1326	+	begin
1327	+	inherited Bind(Binding);
1328	+	if Binding and (FieldDef <> nil) then
1329	+	FIdentityColumn := (FieldDef as TIBFieldDef).IdentityColumn;
1330	+	end;
1331	+
1332		class procedure TIBBCDField.CheckTypeSize(Value: Integer);
1333		begin
1334		{ No need to check as the base type is currency, not BCD }
#	Line 1322 | Line 1414 | constructor TIBCustomDataSet.Create(AOwn
1414		begin
1415		inherited Create(AOwner);
1416		FBase := TIBBase.Create(Self);
1417	+	FDatabaseInfo := TIBDatabaseInfo.Create(self);
1418		FIBLinks := TList.Create;
1419		FCurrentRecord := -1;
1420		FDeletedRecords := 0;
#	Line 1960 | Line 2053 | begin
2053		end;
2054		end;
2055
2056	+	{Update Buffer Fields from Query Results}
2057	+
2058	+	procedure TIBCustomDataSet.UpdateRecordFromQuery(QryResults: IResults;
2059	+	Buffer: PChar);
2060	+	var i, j: integer;
2061	+	begin
2062	+	for i := 0 to QryResults.Count - 1 do
2063	+	begin
2064	+	j := GetFieldPosition(QryResults[i].GetAliasName);
2065	+	if j > 0 then
2066	+	ColumnDataToBuffer(QryResults,i,j,Buffer);
2067	+	end;
2068	+	end;
2069	+
2070	+
2071	+	{Move column data returned from query to row buffer}
2072	+
2073	+	procedure TIBCustomDataSet.ColumnDataToBuffer(QryResults: IResults;
2074	+	ColumnIndex, FieldIndex: integer; Buffer: PChar);
2075	+	var
2076	+	LocalData: PByte;
2077	+	LocalDate, LocalDouble: Double;
2078	+	LocalInt: Integer;
2079	+	LocalBool: wordBool;
2080	+	LocalInt64: Int64;
2081	+	LocalCurrency: Currency;
2082	+	p: PRecordData;
2083	+	ColData: ISQLData;
2084	+	begin
2085	+	p := PRecordData(Buffer);
2086	+	LocalData := nil;
2087	+	with p^.rdFields[FieldIndex], FFieldColumns^[FieldIndex] do
2088	+	begin
2089	+	QryResults.GetData(ColumnIndex,fdIsNull,fdDataLength,LocalData);
2090	+	if not fdIsNull then
2091	+	begin
2092	+	ColData := QryResults[ColumnIndex];
2093	+	case fdDataType of  {Get Formatted data for column types that need formatting}
2094	+	SQL_TIMESTAMP:
2095	+	begin
2096	+	LocalDate := TimeStampToMSecs(DateTimeToTimeStamp(ColData.AsDateTime));
2097	+	LocalData := PByte(@LocalDate);
2098	+	end;
2099	+	SQL_TYPE_DATE:
2100	+	begin
2101	+	LocalInt := DateTimeToTimeStamp(ColData.AsDateTime).Date;
2102	+	LocalData := PByte(@LocalInt);
2103	+	end;
2104	+	SQL_TYPE_TIME:
2105	+	begin
2106	+	LocalInt := DateTimeToTimeStamp(ColData.AsDateTime).Time;
2107	+	LocalData := PByte(@LocalInt);
2108	+	end;
2109	+	SQL_SHORT, SQL_LONG:
2110	+	begin
2111	+	if (fdDataScale = 0) then
2112	+	begin
2113	+	LocalInt := ColData.AsLong;
2114	+	LocalData := PByte(@LocalInt);
2115	+	end
2116	+	else
2117	+	if (fdDataScale >= (-4)) then
2118	+	begin
2119	+	LocalCurrency := ColData.AsCurrency;
2120	+	LocalData := PByte(@LocalCurrency);
2121	+	end
2122	+	else
2123	+	begin
2124	+	LocalDouble := ColData.AsDouble;
2125	+	LocalData := PByte(@LocalDouble);
2126	+	end;
2127	+	end;
2128	+	SQL_INT64:
2129	+	begin
2130	+	if (fdDataScale = 0) then
2131	+	begin
2132	+	LocalInt64 := ColData.AsInt64;
2133	+	LocalData := PByte(@LocalInt64);
2134	+	end
2135	+	else
2136	+	if (fdDataScale >= (-4)) then
2137	+	begin
2138	+	LocalCurrency := ColData.AsCurrency;
2139	+	LocalData := PByte(@LocalCurrency);
2140	+	end
2141	+	else
2142	+	begin
2143	+	LocalDouble := ColData.AsDouble;
2144	+	LocalData := PByte(@LocalDouble);
2145	+	end
2146	+	end;
2147	+	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
2148	+	begin
2149	+	LocalDouble := ColData.AsDouble;
2150	+	LocalData := PByte(@LocalDouble);
2151	+	end;
2152	+	SQL_BOOLEAN:
2153	+	begin
2154	+	LocalBool := ColData.AsBoolean;
2155	+	LocalData := PByte(@LocalBool);
2156	+	end;
2157	+	end;
2158	+
2159	+	if fdDataType = SQL_VARYING then
2160	+	Move(LocalData^, Buffer[fdDataOfs], fdDataLength)
2161	+	else
2162	+	Move(LocalData^, Buffer[fdDataOfs], fdDataSize)
2163	+	end
2164	+	else {Null column}
2165	+	if fdDataType = SQL_VARYING then
2166	+	FillChar(Buffer[fdDataOfs],fdDataLength,0)
2167	+	else
2168	+	FillChar(Buffer[fdDataOfs],fdDataSize,0);
2169	+	end;
2170	+	end;
2171	+
2172		{ Read the record from FQSelect.Current into the record buffer
2173		Then write the buffer to in memory cache }
2174		procedure TIBCustomDataSet.FetchCurrentRecordToBuffer(Qry: TIBSQL;
#	Line 1968 | Line 2177 | var
2177		pbd: PBlobDataArray;
2178		pda: PArrayDataArray;
2179		i, j: Integer;
1971	–	LocalData: PByte;
1972	–	LocalDate, LocalDouble: Double;
1973	–	LocalInt: Integer;
1974	–	LocalBool: wordBool;
1975	–	LocalInt64: Int64;
1976	–	LocalCurrency: Currency;
2180		FieldsLoaded: Integer;
2181		p: PRecordData;
2182		begin
#	Line 2024 | Line 2227 | begin
2227		continue;
2228		end;
2229		if j > 0 then
2230	<	begin
2028	<	LocalData := nil;
2029	<	with p^.rdFields[j], FFieldColumns^[j] do
2030	<	begin
2031	<	Qry.Current.GetData(i,fdIsNull,fdDataLength,LocalData);
2032	<	if not fdIsNull then
2033	<	begin
2034	<	case fdDataType of  {Get Formatted data for column types that need formatting}
2035	<	SQL_TIMESTAMP:
2036	<	begin
2037	<	LocalDate := TimeStampToMSecs(DateTimeToTimeStamp(Qry[i].AsDateTime));
2038	<	LocalData := PByte(@LocalDate);
2039	<	end;
2040	<	SQL_TYPE_DATE:
2041	<	begin
2042	<	LocalInt := DateTimeToTimeStamp(Qry[i].AsDateTime).Date;
2043	<	LocalData := PByte(@LocalInt);
2044	<	end;
2045	<	SQL_TYPE_TIME:
2046	<	begin
2047	<	LocalInt := DateTimeToTimeStamp(Qry[i].AsDateTime).Time;
2048	<	LocalData := PByte(@LocalInt);
2049	<	end;
2050	<	SQL_SHORT, SQL_LONG:
2051	<	begin
2052	<	if (fdDataScale = 0) then
2053	<	begin
2054	<	LocalInt := Qry[i].AsLong;
2055	<	LocalData := PByte(@LocalInt);
2056	<	end
2057	<	else
2058	<	if (fdDataScale >= (-4)) then
2059	<	begin
2060	<	LocalCurrency := Qry[i].AsCurrency;
2061	<	LocalData := PByte(@LocalCurrency);
2062	<	end
2063	<	else
2064	<	begin
2065	<	LocalDouble := Qry[i].AsDouble;
2066	<	LocalData := PByte(@LocalDouble);
2067	<	end;
2068	<	end;
2069	<	SQL_INT64:
2070	<	begin
2071	<	if (fdDataScale = 0) then
2072	<	begin
2073	<	LocalInt64 := Qry[i].AsInt64;
2074	<	LocalData := PByte(@LocalInt64);
2075	<	end
2076	<	else
2077	<	if (fdDataScale >= (-4)) then
2078	<	begin
2079	<	LocalCurrency := Qry[i].AsCurrency;
2080	<	LocalData := PByte(@LocalCurrency);
2081	<	end
2082	<	else
2083	<	begin
2084	<	LocalDouble := Qry[i].AsDouble;
2085	<	LocalData := PByte(@LocalDouble);
2086	<	end
2087	<	end;
2088	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
2089	<	begin
2090	<	LocalDouble := Qry[i].AsDouble;
2091	<	LocalData := PByte(@LocalDouble);
2092	<	end;
2093	<	SQL_BOOLEAN:
2094	<	begin
2095	<	LocalBool := Qry[i].AsBoolean;
2096	<	LocalData := PByte(@LocalBool);
2097	<	end;
2098	<	end;
2099	<
2100	<	if fdDataType = SQL_VARYING then
2101	<	Move(LocalData^, Buffer[fdDataOfs], fdDataLength)
2102	<	else
2103	<	Move(LocalData^, Buffer[fdDataOfs], fdDataSize)
2104	<	end
2105	<	else {Null column}
2106	<	if fdDataType = SQL_VARYING then
2107	<	FillChar(Buffer[fdDataOfs],fdDataLength,0)
2108	<	else
2109	<	FillChar(Buffer[fdDataOfs],fdDataSize,0);
2110	<	end;
2111	<	end;
2230	>	ColumnDataToBuffer(Qry.Current,i,j,Buffer);
2231		end;
2232		WriteRecordCache(RecordNumber, Buffer);
2233		end;
#	Line 2355 | Line 2474 | begin
2474		SetInternalSQLParams(Qry.Params, Buff);
2475		Qry.ExecQuery;
2476		end;
2477	+	if Qry.FieldCount > 0 then {Has RETURNING Clause}
2478	+	UpdateRecordFromQuery(Qry.Current,Buff);
2479		PRecordData(Buff)^.rdUpdateStatus := usUnmodified;
2480		PRecordData(Buff)^.rdCachedUpdateStatus := cusUnmodified;
2481		SetModified(False);
#	Line 2605 | Line 2726 | begin
2726		FQRefresh.Database := Value;
2727		FQSelect.Database := Value;
2728		FQModify.Database := Value;
2729	+	FDatabaseInfo.Database := Value;
2730	+	FGeneratorField.Database := Value;
2731		end;
2732		end;
2733
#	Line 2773 | Line 2896 | begin
2896		FQRefresh.Transaction := Value;
2897		FQSelect.Transaction := Value;
2898		FQModify.Transaction := Value;
2899	+	FGeneratorField.Transaction := Value;
2900		end;
2901		end;
2902
#	Line 3674 | Line 3798 | const
3798		'and R.RDB$FIELD_SOURCE = F.RDB$FIELD_NAME '+ {do not localize}
3799		'and ((not F.RDB$COMPUTED_BLR is NULL) or ' + {do not localize}
3800		'     (not F.RDB$DEFAULT_VALUE is NULL)) '; {do not localize}
3801	+
3802	+	DefaultSQLODS12 = 'Select F.RDB$COMPUTED_BLR, ' + {do not localize}
3803	+	'F.RDB$DEFAULT_VALUE, R.RDB$FIELD_NAME, R.RDB$IDENTITY_TYPE ' + {do not localize}
3804	+	'from RDB$RELATION_FIELDS R, RDB$FIELDS F ' + {do not localize}
3805	+	'where R.RDB$RELATION_NAME = :RELATION ' +  {do not localize}
3806	+	'and R.RDB$FIELD_SOURCE = F.RDB$FIELD_NAME '+ {do not localize}
3807	+	'and ((not F.RDB$COMPUTED_BLR is NULL) or ' + {do not localize}
3808	+	'     (not F.RDB$DEFAULT_VALUE is NULL) or ' + {do not localize}
3809	+	'     ( not R.RDB$IDENTITY_TYPE is NULL))' ; {do not localize}
3810	+
3811		var
3812		FieldType: TFieldType;
3813		FieldSize: Word;
#	Line 3714 | Line 3848 | var
3848		FField.FieldName := Query.Fields[2].AsString;
3849		FField.DEFAULT_VALUE := not Query.Fields[1].IsNull;
3850		FField.COMPUTED_BLR := not Query.Fields[0].IsNull;
3851	+	FField.IDENTITY_COLUMN := (Query.FieldCount > 3) and not Query.Fields[3].IsNull;
3852		FField.NextField := Result.FieldNodes;
3853		Result.FieldNodes := FField;
3854		Query.Next;
#	Line 3767 | Line 3902 | var
3902		FField := Ffield.NextField;
3903		end;
3904
3905	+	function Is_IDENTITY_COLUMN(Relation, Field : String) : Boolean;
3906	+	var
3907	+	FRelation : TRelationNode;
3908	+	FField : TFieldNode;
3909	+	begin
3910	+	FRelation := FRelationNodes;
3911	+	while Assigned(FRelation) and
3912	+	(FRelation.RelationName <> Relation) do
3913	+	FRelation := FRelation.NextRelation;
3914	+	if not Assigned(FRelation) then
3915	+	FRelation := Add_Node(Relation, Field);
3916	+	Result := false;
3917	+	FField := FRelation.FieldNodes;
3918	+	while Assigned(FField) do
3919	+	if FField.FieldName = Field then
3920	+	begin
3921	+	Result := Ffield.IDENTITY_COLUMN;
3922	+	Exit;
3923	+	end
3924	+	else
3925	+	FField := Ffield.NextField;
3926	+	end;
3927	+
3928		Procedure FreeNodes;
3929		var
3930		FRelation : TRelationNode;
#	Line 3800 | Line 3958 | begin
3958		FieldIndex := 0;
3959		if (Length(FMappedFieldPosition) < SourceQuery.MetaData.Count) then
3960		SetLength(FMappedFieldPosition, SourceQuery.MetaData.Count);
3961	<	Query.SQL.Text := DefaultSQL;
3961	>	if FDatabaseInfo.ODSMajorVersion >= 12 then
3962	>	Query.SQL.Text := DefaultSQLODS12
3963	>	else
3964	>	Query.SQL.Text := DefaultSQL;
3965		Query.Prepare;
3966		SetLength(FAliasNameMap, SourceQuery.MetaData.Count);
3967		SetLength(FAliasNameList, SourceQuery.MetaData.Count);
#	Line 3939 | Line 4100 | begin
4100		ArrayBounds := aArrayBounds;
4101		if (FieldName <> '') and (RelationName <> '') then
4102		begin
4103	+	IdentityColumn := Is_IDENTITY_COLUMN(RelationName, FieldName);
4104		if Has_COMPUTED_BLR(RelationName, FieldName) then
4105		begin
4106		Attributes := [faReadOnly];
#	Line 4841 | Line 5003 | begin
5003		InternalSetParams(Query.Params,buff);
5004		end;
5005
5006	+	procedure TIBDataSetUpdateObject.UpdateRecordFromQuery(QryResults: IResults;
5007	+	Buffer: PChar);
5008	+	begin
5009	+	if not Assigned(DataSet) then Exit;
5010	+	DataSet.UpdateRecordFromQuery(QryResults, Buffer);
5011	+	end;
5012	+
5013		function TIBDSBlobStream.GetSize: Int64;
5014		begin
5015		Result := FBlobStream.BlobSize;
#	Line 4901 | Line 5070 | end;
5070
5071		procedure TIBGenerator.SetIncrement(const AValue: integer);
5072		begin
5073	+	if FIncrement = AValue then Exit;
5074		if AValue < 0 then
5075	<	raise Exception.Create('A Generator Increment cannot be negative');
5076	<	FIncrement := AValue
5075	>	IBError(ibxeNegativeGenerator,[]);
5076	>	FIncrement := AValue;
5077	>	SetQuerySQL;
5078		end;
5079
5080	<	function TIBGenerator.GetNextValue(ADatabase: TIBDatabase;
4910	<	ATransaction: TIBTransaction): integer;
5080	>	procedure TIBGenerator.SetTransaction(AValue: TIBTransaction);
5081		begin
5082	<	with TIBSQL.Create(nil) do
5083	<	try
5084	<	Database := ADatabase;
5085	<	Transaction := ATransaction;
5086	<	if not assigned(Database) then
5087	<	IBError(ibxeCannotSetDatabase,[]);
5088	<	if not assigned(Transaction) then
5089	<	IBError(ibxeCannotSetTransaction,[]);
5090	<	with Transaction do
5091	<	if not InTransaction then StartTransaction;
5092	<	SQL.Text := Format('Select Gen_ID(%s,%d) as ID From RDB$Database',[FGeneratorName,Increment]);
5093	<	Prepare;
5082	>	FQuery.Transaction := AValue;
5083	>	end;
5084	>
5085	>	procedure TIBGenerator.SetQuerySQL;
5086	>	begin
5087	>	FQuery.SQL.Text := Format('Select Gen_ID(%s,%d) From RDB$Database',[FGeneratorName,Increment]);
5088	>	end;
5089	>
5090	>	function TIBGenerator.GetDatabase: TIBDatabase;
5091	>	begin
5092	>	Result := FQuery.Database;
5093	>	end;
5094	>
5095	>	function TIBGenerator.GetTransaction: TIBTransaction;
5096	>	begin
5097	>	Result := FQuery.Transaction;
5098	>	end;
5099	>
5100	>	procedure TIBGenerator.SetDatabase(AValue: TIBDatabase);
5101	>	begin
5102	>	FQuery.Database := AValue;
5103	>	end;
5104	>
5105	>	procedure TIBGenerator.SetGeneratorName(AValue: string);
5106	>	begin
5107	>	if FGeneratorName = AValue then Exit;
5108	>	FGeneratorName := AValue;
5109	>	SetQuerySQL;
5110	>	end;
5111	>
5112	>	function TIBGenerator.GetNextValue: integer;
5113	>	begin
5114	>	with FQuery do
5115	>	begin
5116	>	Transaction.Active := true;
5117		ExecQuery;
5118		try
5119	<	Result := FieldByName('ID').AsInteger
5119	>	Result := Fields[0].AsInteger
5120		finally
5121		Close
5122		end;
4930	–	finally
4931	–	Free
5123		end;
5124		end;
5125
#	Line 4936 | Line 5127 | constructor TIBGenerator.Create(Owner: T
5127		begin
5128		FOwner := Owner;
5129		FIncrement := 1;
5130	+	FQuery := TIBSQL.Create(nil);
5131	+	end;
5132	+
5133	+	destructor TIBGenerator.Destroy;
5134	+	begin
5135	+	if assigned(FQuery) then FQuery.Free;
5136	+	inherited Destroy;
5137		end;
5138
5139
5140		procedure TIBGenerator.Apply;
5141		begin
5142	<	if (FGeneratorName <> '') and (FFieldName <> '') and Owner.FieldByName(FFieldName).IsNull then
5143	<	Owner.FieldByName(FFieldName).AsInteger := GetNextValue(Owner.Database,Owner.Transaction);
5142	>	if assigned(Database) and assigned(Transaction) and
5143	>	(FGeneratorName <> '') and (FFieldName <> '') and Owner.FieldByName(FFieldName).IsNull then
5144	>	Owner.FieldByName(FFieldName).AsInteger := GetNextValue;
5145		end;
5146
5147

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