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

Comparing ibx/trunk/runtime/IBCustomDataSet.pas (file contents):
Revision 50 by tony, Thu Feb 23 15:22:18 2017 UTC vs.
Revision 108 by tony, Thu Jan 18 14:37:46 2018 UTC

#	Line 27 | Line 27
27		{    IBX For Lazarus (Firebird Express)                                  }
28		{    Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk }
29		{    Portions created by MWA Software are copyright McCallum Whyman      }
30	<	{    Associates Ltd 2011 - 2015                                                }
30	>	{    Associates Ltd 2011 - 2015                                          }
31		{                                                                        }
32		{************************************************************************}
33
#	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 74 | Line 74 | type
74		procedure SetDataSet(ADataSet: TIBCustomDataSet); virtual; abstract;
75		procedure Apply(UpdateKind: TUpdateKind; buff: PChar); virtual; abstract;
76		function GetSQL(UpdateKind: TUpdateKind): TStrings; virtual; abstract;
77	<	procedure InternalSetParams(Query: TIBSQL; buff: PChar);
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 181 | Line 183 | type
183		FCharacterSetSize: integer;
184		FAutoFieldSize: boolean;
185		FCodePage: TSystemCodePage;
186	+	FDataSize: integer;
187		protected
188		procedure Bind(Binding: Boolean); override;
189		function GetDataSize: Integer; override;
#	Line 206 | 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 214 | 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 272 | 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 358 | Line 411 | type
411		FQRefresh,
412		FQSelect,
413		FQModify: TIBSQL;
414	+	FDatabaseInfo: TIBDatabaseInfo;
415		FRecordBufferSize: Integer;
416		FRecordCount: Integer;
417		FRecordSize: Integer;
#	Line 387 | Line 441 | type
441		FInTransactionEnd: boolean;
442		FIBLinks: TList;
443		FFieldColumns: PFieldColumns;
444	+	FBufferUpdatedOnQryReturn: boolean;
445	+	procedure ColumnDataToBuffer(QryResults: IResults; ColumnIndex,
446	+	FieldIndex: integer; Buffer: PChar);
447		procedure InitModelBuffer(Qry: TIBSQL; Buffer: PChar);
448		function GetSelectStmtIntf: IStatement;
449		procedure SetUpdateMode(const Value: TUpdateMode);
#	Line 434 | Line 491 | type
491		procedure SetDatabase(Value: TIBDatabase);
492		procedure SetDeleteSQL(Value: TStrings);
493		procedure SetInsertSQL(Value: TStrings);
494	<	procedure SetInternalSQLParams(Qry: TIBSQL; Buffer: Pointer);
494	>	procedure SetInternalSQLParams(Params: ISQLParams; Buffer: Pointer);
495		procedure SetRefreshSQL(Value: TStrings);
496		procedure SetSelectSQL(Value: TStrings);
497		procedure SetModifySQL(Value: TStrings);
498		procedure SetTransaction(Value: TIBTransaction);
499		procedure SetUpdateRecordTypes(Value: TIBUpdateRecordTypes);
500		procedure SetUniDirectional(Value: Boolean);
501	+	procedure UpdateRecordFromQuery(QryResults: IResults; Buffer: PChar);
502		procedure RefreshParams;
503		function AdjustPosition(FCache: PChar; Offset: DWORD;
504		Origin: Integer): DWORD;
#	Line 628 | Line 686 | type
686		procedure Post; override;
687		function ParamByName(ParamName: String): ISQLParam;
688		property ArrayFieldCount: integer read FArrayFieldCount;
689	+	property DatabaseInfo: TIBDatabaseInfo read FDatabaseInfo;
690		property UpdateObject: TIBDataSetUpdateObject read FUpdateObject write SetUpdateObject;
691		property UpdatesPending: Boolean read FUpdatesPending;
692		property UpdateRecordTypes: TIBUpdateRecordTypes read FUpdateRecordTypes
#	Line 789 | Line 848 | type
848		FCharacterSetName: RawByteString;
849		FCharacterSetSize: integer;
850		FCodePage: TSystemCodePage;
851	+	FIdentityColumn: boolean;
852		FRelationName: string;
853	+	FDataSize: integer;
854		published
855		property CharacterSetName: RawByteString read FCharacterSetName write FCharacterSetName;
856		property CharacterSetSize: integer read FCharacterSetSize write FCharacterSetSize;
857		property CodePage: TSystemCodePage read FCodePage write FCodePage;
858	+	property DataSize: integer read FDataSize write FDataSize;
859		property RelationName: string read FRelationName write FRelationName;
860		property ArrayDimensions: integer read FArrayDimensions write FArrayDimensions;
861		property ArrayBounds: TArrayBounds read FArrayBounds write FArrayBounds;
862	+	property IdentityColumn: boolean read FIdentityColumn write FIdentityColumn default false;
863		end;
864
865		const
866		DefaultFieldClasses: array[TFieldType] of TFieldClass = (
867		nil,                { ftUnknown }
868		TIBStringField,     { ftString }
869	<	TSmallintField,     { ftSmallint }
870	<	TIntegerField,      { ftInteger }
869	>	TIBSmallintField,   { ftSmallint }
870	>	TIBIntegerField,      { ftInteger }
871		TWordField,         { ftWord }
872		TBooleanField,      { ftBoolean }
873		TFloatField,        { ftFloat }
#	Line 826 | Line 889 | DefaultFieldClasses: array[TFieldType] o
889		nil,                { ftCursor }
890		TStringField,       { ftFixedChar }
891		nil,    { ftWideString }
892	<	TLargeIntField,     { ftLargeInt }
892	>	TIBLargeIntField,     { ftLargeInt }
893		nil,          { ftADT }
894		TIBArrayField,        { ftArray }
895		nil,    { ftReference }
#	Line 870 | Line 933 | type
933		FieldName : String;
934		COMPUTED_BLR : Boolean;
935		DEFAULT_VALUE : boolean;
936	+	IDENTITY_COLUMN : boolean;
937		NextField : TFieldNode;
938		end;
939
#	Line 922 | Line 986 | type
986		Result := str;
987		end;
988
989	+	{ TIBLargeIntField }
990	+
991	+	procedure TIBLargeIntField.Bind(Binding: Boolean);
992	+	begin
993	+	inherited Bind(Binding);
994	+	if Binding and (FieldDef <> nil) then
995	+	FIdentityColumn := (FieldDef as TIBFieldDef).IdentityColumn;
996	+	end;
997	+
998	+	{ TIBIntegerField }
999	+
1000	+	procedure TIBIntegerField.Bind(Binding: Boolean);
1001	+	begin
1002	+	inherited Bind(Binding);
1003	+	if Binding and (FieldDef <> nil) then
1004	+	FIdentityColumn := (FieldDef as TIBFieldDef).IdentityColumn;
1005	+	end;
1006	+
1007	+	{ TIBSmallintField }
1008	+
1009	+	procedure TIBSmallintField.Bind(Binding: Boolean);
1010	+	begin
1011	+	inherited Bind(Binding);
1012	+	if Binding and (FieldDef <> nil) then
1013	+	FIdentityColumn := (FieldDef as TIBFieldDef).IdentityColumn;
1014	+	end;
1015	+
1016		{ TIBArray }
1017
1018		procedure TIBArray.EventHandler(Sender: IArray; Reason: TArrayEventReason);
#	Line 1031 | Line 1122 | begin
1122		{2: case 2 ignored. This should be handled by TIBWideMemo}
1123
1124		3, {Assume UNICODE_FSS is really UTF8}
1125	<	4: {Include GB18030 - assuming UTF8 routine work for this codeset}
1125	>	4: {Include GB18030 - assuming UTF8 routines work for this codeset}
1126		if DisplayWidth = 0 then
1127		Result := ValidUTF8String(TextToSingleLine(Result))
1128		else
#	Line 1089 | Line 1180 | procedure TIBMemoField.SetAsString(const
1180		var s: RawByteString;
1181		begin
1182		s := AValue;
1183	<	if StringCodePage(Value) <> CodePage then
1183	>	if StringCodePage(s) <> CodePage then
1184		SetCodePage(s,CodePage,CodePage<>CP_NONE);
1185		inherited SetAsString(s);
1186		end;
#	Line 1141 | Line 1232 | begin
1232		IBFieldDef := FieldDef as TIBFieldDef;
1233		CharacterSetSize := IBFieldDef.CharacterSetSize;
1234		CharacterSetName := IBFieldDef.CharacterSetName;
1235	+	FDataSize := IBFieldDef.DataSize + 1;
1236		if AutoFieldSize then
1237		Size := IBFieldDef.Size;
1238		CodePage := IBFieldDef.CodePage;
#	Line 1149 | Line 1241 | end;
1241
1242		function TIBStringField.GetDataSize: Integer;
1243		begin
1244	<	Result := Size * CharacterSetSize + 1;
1244	>	Result := FDataSize;
1245		end;
1246
1247		constructor TIBStringField.Create(aOwner: TComponent);
#	Line 1208 | Line 1300 | var
1300		s: RawByteString;
1301		begin
1302		Buffer := nil;
1303	<	IBAlloc(Buffer, 0, Size + 1);
1303	>	IBAlloc(Buffer, 0, DataSize);
1304		try
1305		s := Value;
1306		if StringCodePage(s) <> CodePage then
1307		SetCodePage(s,CodePage,CodePage<>CP_NONE);
1308	<	StrLCopy(Buffer, PChar(s), Size);
1308	>	StrLCopy(Buffer, PChar(s), DataSize-1);
1309		if Transliterate then
1310		DataSet.Translate(Buffer, Buffer, True);
1311		SetData(Buffer);
#	Line 1232 | Line 1324 | begin
1324		Size := 8;
1325		end;
1326
1327	+	procedure TIBBCDField.Bind(Binding: Boolean);
1328	+	begin
1329	+	inherited Bind(Binding);
1330	+	if Binding and (FieldDef <> nil) then
1331	+	FIdentityColumn := (FieldDef as TIBFieldDef).IdentityColumn;
1332	+	end;
1333	+
1334		class procedure TIBBCDField.CheckTypeSize(Value: Integer);
1335		begin
1336		{ No need to check as the base type is currency, not BCD }
#	Line 1317 | Line 1416 | constructor TIBCustomDataSet.Create(AOwn
1416		begin
1417		inherited Create(AOwner);
1418		FBase := TIBBase.Create(Self);
1419	+	FDatabaseInfo := TIBDatabaseInfo.Create(self);
1420		FIBLinks := TList.Create;
1421		FCurrentRecord := -1;
1422		FDeletedRecords := 0;
#	Line 1955 | Line 2055 | begin
2055		end;
2056		end;
2057
2058	+	{Update Buffer Fields from Query Results}
2059	+
2060	+	procedure TIBCustomDataSet.UpdateRecordFromQuery(QryResults: IResults;
2061	+	Buffer: PChar);
2062	+	var i, j: integer;
2063	+	begin
2064	+	for i := 0 to QryResults.Count - 1 do
2065	+	begin
2066	+	j := GetFieldPosition(QryResults[i].GetAliasName);
2067	+	if j > 0 then
2068	+	begin
2069	+	ColumnDataToBuffer(QryResults,i,j,Buffer);
2070	+	FBufferUpdatedOnQryReturn := true;
2071	+	end;
2072	+	end;
2073	+	end;
2074	+
2075	+
2076	+	{Move column data returned from query to row buffer}
2077	+
2078	+	procedure TIBCustomDataSet.ColumnDataToBuffer(QryResults: IResults;
2079	+	ColumnIndex, FieldIndex: integer; Buffer: PChar);
2080	+	var
2081	+	LocalData: PByte;
2082	+	LocalDate: TDateTime;
2083	+	LocalDouble: Double;
2084	+	LocalInt: Integer;
2085	+	LocalBool: wordBool;
2086	+	LocalInt64: Int64;
2087	+	LocalCurrency: Currency;
2088	+	ColData: ISQLData;
2089	+	begin
2090	+	LocalData := nil;
2091	+	with PRecordData(Buffer)^.rdFields[FieldIndex], FFieldColumns^[FieldIndex] do
2092	+	begin
2093	+	QryResults.GetData(ColumnIndex,fdIsNull,fdDataLength,LocalData);
2094	+	if not fdIsNull then
2095	+	begin
2096	+	ColData := QryResults[ColumnIndex];
2097	+	case fdDataType of  {Get Formatted data for column types that need formatting}
2098	+	SQL_TYPE_DATE,
2099	+	SQL_TYPE_TIME,
2100	+	SQL_TIMESTAMP:
2101	+	begin
2102	+	{This is an IBX native format and not the TDataset approach. See also GetFieldData}
2103	+	LocalDate := ColData.AsDateTime;
2104	+	LocalData := PByte(@LocalDate);
2105	+	end;
2106	+	SQL_SHORT, SQL_LONG:
2107	+	begin
2108	+	if (fdDataScale = 0) then
2109	+	begin
2110	+	LocalInt := ColData.AsLong;
2111	+	LocalData := PByte(@LocalInt);
2112	+	end
2113	+	else
2114	+	if (fdDataScale >= (-4)) then
2115	+	begin
2116	+	LocalCurrency := ColData.AsCurrency;
2117	+	LocalData := PByte(@LocalCurrency);
2118	+	end
2119	+	else
2120	+	begin
2121	+	LocalDouble := ColData.AsDouble;
2122	+	LocalData := PByte(@LocalDouble);
2123	+	end;
2124	+	end;
2125	+	SQL_INT64:
2126	+	begin
2127	+	if (fdDataScale = 0) then
2128	+	begin
2129	+	LocalInt64 := ColData.AsInt64;
2130	+	LocalData := PByte(@LocalInt64);
2131	+	end
2132	+	else
2133	+	if (fdDataScale >= (-4)) then
2134	+	begin
2135	+	LocalCurrency := ColData.AsCurrency;
2136	+	LocalData := PByte(@LocalCurrency);
2137	+	end
2138	+	else
2139	+	begin
2140	+	LocalDouble := ColData.AsDouble;
2141	+	LocalData := PByte(@LocalDouble);
2142	+	end
2143	+	end;
2144	+	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
2145	+	begin
2146	+	LocalDouble := ColData.AsDouble;
2147	+	LocalData := PByte(@LocalDouble);
2148	+	end;
2149	+	SQL_BOOLEAN:
2150	+	begin
2151	+	LocalBool := ColData.AsBoolean;
2152	+	LocalData := PByte(@LocalBool);
2153	+	end;
2154	+	end;
2155	+
2156	+	if fdDataType = SQL_VARYING then
2157	+	Move(LocalData^, Buffer[fdDataOfs], fdDataLength)
2158	+	else
2159	+	Move(LocalData^, Buffer[fdDataOfs], fdDataSize)
2160	+	end
2161	+	else {Null column}
2162	+	if fdDataType = SQL_VARYING then
2163	+	FillChar(Buffer[fdDataOfs],fdDataLength,0)
2164	+	else
2165	+	FillChar(Buffer[fdDataOfs],fdDataSize,0);
2166	+	end;
2167	+	end;
2168	+
2169		{ Read the record from FQSelect.Current into the record buffer
2170		Then write the buffer to in memory cache }
2171		procedure TIBCustomDataSet.FetchCurrentRecordToBuffer(Qry: TIBSQL;
#	Line 1963 | Line 2174 | var
2174		pbd: PBlobDataArray;
2175		pda: PArrayDataArray;
2176		i, j: Integer;
1966	–	LocalData: PChar;
1967	–	LocalDate, LocalDouble: Double;
1968	–	LocalInt: Integer;
1969	–	LocalBool: wordBool;
1970	–	LocalInt64: Int64;
1971	–	LocalCurrency: Currency;
2177		FieldsLoaded: Integer;
2178		p: PRecordData;
2179		begin
#	Line 2019 | Line 2224 | begin
2224		continue;
2225		end;
2226		if j > 0 then
2227	<	begin
2023	<	LocalData := nil;
2024	<	with p^.rdFields[j], FFieldColumns^[j] do
2025	<	begin
2026	<	Qry.Current.GetData(i,fdIsNull,fdDataLength,LocalData);
2027	<	if not fdIsNull then
2028	<	begin
2029	<	case fdDataType of  {Get Formatted data for column types that need formatting}
2030	<	SQL_TIMESTAMP:
2031	<	begin
2032	<	LocalDate := TimeStampToMSecs(DateTimeToTimeStamp(Qry[i].AsDateTime));
2033	<	LocalData := PChar(@LocalDate);
2034	<	end;
2035	<	SQL_TYPE_DATE:
2036	<	begin
2037	<	LocalInt := DateTimeToTimeStamp(Qry[i].AsDateTime).Date;
2038	<	LocalData := PChar(@LocalInt);
2039	<	end;
2040	<	SQL_TYPE_TIME:
2041	<	begin
2042	<	LocalInt := DateTimeToTimeStamp(Qry[i].AsDateTime).Time;
2043	<	LocalData := PChar(@LocalInt);
2044	<	end;
2045	<	SQL_SHORT, SQL_LONG:
2046	<	begin
2047	<	if (fdDataScale = 0) then
2048	<	begin
2049	<	LocalInt := Qry[i].AsLong;
2050	<	LocalData := PChar(@LocalInt);
2051	<	end
2052	<	else
2053	<	if (fdDataScale >= (-4)) then
2054	<	begin
2055	<	LocalCurrency := Qry[i].AsCurrency;
2056	<	LocalData := PChar(@LocalCurrency);
2057	<	end
2058	<	else
2059	<	begin
2060	<	LocalDouble := Qry[i].AsDouble;
2061	<	LocalData := PChar(@LocalDouble);
2062	<	end;
2063	<	end;
2064	<	SQL_INT64:
2065	<	begin
2066	<	if (fdDataScale = 0) then
2067	<	begin
2068	<	LocalInt64 := Qry[i].AsInt64;
2069	<	LocalData := PChar(@LocalInt64);
2070	<	end
2071	<	else
2072	<	if (fdDataScale >= (-4)) then
2073	<	begin
2074	<	LocalCurrency := Qry[i].AsCurrency;
2075	<	LocalData := PChar(@LocalCurrency);
2076	<	end
2077	<	else
2078	<	begin
2079	<	LocalDouble := Qry[i].AsDouble;
2080	<	LocalData := PChar(@LocalDouble);
2081	<	end
2082	<	end;
2083	<	SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT:
2084	<	begin
2085	<	LocalDouble := Qry[i].AsDouble;
2086	<	LocalData := PChar(@LocalDouble);
2087	<	end;
2088	<	SQL_BOOLEAN:
2089	<	begin
2090	<	LocalBool := Qry[i].AsBoolean;
2091	<	LocalData := PChar(@LocalBool);
2092	<	end;
2093	<	end;
2094	<
2095	<	if fdDataType = SQL_VARYING then
2096	<	Move(LocalData^, Buffer[fdDataOfs], fdDataLength)
2097	<	else
2098	<	Move(LocalData^, Buffer[fdDataOfs], fdDataSize)
2099	<	end
2100	<	else {Null column}
2101	<	if fdDataType = SQL_VARYING then
2102	<	FillChar(Buffer[fdDataOfs],fdDataLength,0)
2103	<	else
2104	<	FillChar(Buffer[fdDataOfs],fdDataSize,0);
2105	<	end;
2106	<	end;
2227	>	ColumnDataToBuffer(Qry.Current,i,j,Buffer);
2228		end;
2229		WriteRecordCache(RecordNumber, Buffer);
2230		end;
#	Line 2198 | Line 2319 | begin
2319		FUpdateObject.Apply(ukDelete,Buff)
2320		else
2321		begin
2322	<	SetInternalSQLParams(FQDelete, Buff);
2322	>	SetInternalSQLParams(FQDelete.Params, Buff);
2323		FQDelete.ExecQuery;
2324		end;
2325		with PRecordData(Buff)^ do
#	Line 2337 | Line 2458 | begin
2458		end;
2459		Inc(arr);
2460		end;
2461	+	FBufferUpdatedOnQryReturn := false;
2462		if Assigned(FUpdateObject) then
2463		begin
2464		if (Qry = FQDelete) then
#	Line 2347 | Line 2469 | begin
2469		FUpdateObject.Apply(ukModify,Buff);
2470		end
2471		else begin
2472	<	SetInternalSQLParams(Qry, Buff);
2472	>	SetInternalSQLParams(Qry.Params, Buff);
2473		Qry.ExecQuery;
2474	+	if Qry.FieldCount > 0 then {Has RETURNING Clause}
2475	+	UpdateRecordFromQuery(Qry.Current,Buff);
2476		end;
2477		PRecordData(Buff)^.rdUpdateStatus := usUnmodified;
2478		PRecordData(Buff)^.rdCachedUpdateStatus := cusUnmodified;
2479		SetModified(False);
2480		WriteRecordCache(PRecordData(Buff)^.rdRecordNumber, Buff);
2481	<	if (FForcedRefresh or FNeedsRefresh) and CanRefresh then
2481	>	if (FForcedRefresh or (FNeedsRefresh and not FBufferUpdatedOnQryReturn)) and CanRefresh then
2482		InternalRefreshRow;
2483		end;
2484
#	Line 2381 | Line 2505 | begin
2505		end
2506		else
2507		Qry := FQRefresh;
2508	<	SetInternalSQLParams(Qry, Buff);
2508	>	SetInternalSQLParams(Qry.Params, Buff);
2509		Qry.ExecQuery;
2510		try
2511		if (Qry.SQLStatementType = SQLExecProcedure) or Qry.Next then
#	Line 2590 | Line 2714 | end;
2714
2715		procedure TIBCustomDataSet.SetDatabase(Value: TIBDatabase);
2716		begin
2717	<	if (FBase.Database <> Value) then
2717	>	if (csLoading in ComponentState) or (FBase.Database <> Value) then
2718		begin
2719		CheckDatasetClosed;
2720	+	InternalUnPrepare;
2721		FBase.Database := Value;
2722		FQDelete.Database := Value;
2723		FQInsert.Database := Value;
2724		FQRefresh.Database := Value;
2725		FQSelect.Database := Value;
2726		FQModify.Database := Value;
2727	+	FDatabaseInfo.Database := Value;
2728	+	FGeneratorField.Database := Value;
2729		end;
2730		end;
2731
#	Line 2620 | Line 2747 | begin
2747		end;
2748		end;
2749
2750	<	procedure TIBCustomDataSet.SetInternalSQLParams(Qry: TIBSQL; Buffer: Pointer);
2750	>	procedure TIBCustomDataSet.SetInternalSQLParams(Params: ISQLParams; Buffer: Pointer);
2751		var
2752		i, j: Integer;
2753		cr, data: PChar;
#	Line 2636 | Line 2763 | begin
2763		InternalPrepare;
2764		OldBuffer := nil;
2765		try
2766	<	for i := 0 to Qry.Params.GetCount - 1 do
2766	>	for i := 0 to Params.GetCount - 1 do
2767		begin
2768	<	Param := Qry.Params[i];
2768	>	Param := Params[i];
2769		fn := Param.Name;
2770		if (Pos('OLD_', fn) = 1) then {mbcs ok}
2771		begin
#	Line 2702 | Line 2829 | begin
2829		end;
2830		SQL_BLOB, SQL_ARRAY, SQL_QUAD:
2831		Param.AsQuad := PISC_QUAD(data)^;
2832	<	SQL_TYPE_DATE:
2833	<	begin
2707	<	ts.Date := PInt(data)^;
2708	<	ts.Time := 0;
2709	<	Param.AsDate := TimeStampToDateTime(ts);
2710	<	end;
2711	<	SQL_TYPE_TIME:
2712	<	begin
2713	<	ts.Date := 0;
2714	<	ts.Time := PInt(data)^;
2715	<	Param.AsTime := TimeStampToDateTime(ts);
2716	<	end;
2832	>	SQL_TYPE_DATE,
2833	>	SQL_TYPE_TIME,
2834		SQL_TIMESTAMP:
2835	<	Param.AsDateTime :=
2836	<	TimeStampToDateTime(MSecsToTimeStamp(trunc(PDouble(data)^)));
2835	>	{This is an IBX native format and not the TDataset approach. See also SetFieldData}
2836	>	Param.AsDateTime := PDateTime(data)^;
2837		SQL_BOOLEAN:
2838		Param.AsBoolean := PWordBool(data)^;
2839		end;
#	Line 2767 | Line 2884 | begin
2884		FQRefresh.Transaction := Value;
2885		FQSelect.Transaction := Value;
2886		FQModify.Transaction := Value;
2887	+	FGeneratorField.Transaction := Value;
2888		end;
2889		end;
2890
#	Line 3668 | Line 3786 | const
3786		'and R.RDB$FIELD_SOURCE = F.RDB$FIELD_NAME '+ {do not localize}
3787		'and ((not F.RDB$COMPUTED_BLR is NULL) or ' + {do not localize}
3788		'     (not F.RDB$DEFAULT_VALUE is NULL)) '; {do not localize}
3789	+
3790	+	DefaultSQLODS12 = 'Select F.RDB$COMPUTED_BLR, ' + {do not localize}
3791	+	'F.RDB$DEFAULT_VALUE, R.RDB$FIELD_NAME, R.RDB$IDENTITY_TYPE ' + {do not localize}
3792	+	'from RDB$RELATION_FIELDS R, RDB$FIELDS F ' + {do not localize}
3793	+	'where R.RDB$RELATION_NAME = :RELATION ' +  {do not localize}
3794	+	'and R.RDB$FIELD_SOURCE = F.RDB$FIELD_NAME '+ {do not localize}
3795	+	'and ((not F.RDB$COMPUTED_BLR is NULL) or ' + {do not localize}
3796	+	'     (not F.RDB$DEFAULT_VALUE is NULL) or ' + {do not localize}
3797	+	'     ( not R.RDB$IDENTITY_TYPE is NULL))' ; {do not localize}
3798	+
3799		var
3800		FieldType: TFieldType;
3801		FieldSize: Word;
3802	+	FieldDataSize: integer;
3803		charSetID: short;
3804		CharSetSize: integer;
3805		CharSetName: RawByteString;
#	Line 3707 | Line 3836 | var
3836		FField.FieldName := Query.Fields[2].AsString;
3837		FField.DEFAULT_VALUE := not Query.Fields[1].IsNull;
3838		FField.COMPUTED_BLR := not Query.Fields[0].IsNull;
3839	+	FField.IDENTITY_COLUMN := (Query.FieldCount > 3) and not Query.Fields[3].IsNull;
3840		FField.NextField := Result.FieldNodes;
3841		Result.FieldNodes := FField;
3842		Query.Next;
#	Line 3760 | Line 3890 | var
3890		FField := Ffield.NextField;
3891		end;
3892
3893	+	function Is_IDENTITY_COLUMN(Relation, Field : String) : Boolean;
3894	+	var
3895	+	FRelation : TRelationNode;
3896	+	FField : TFieldNode;
3897	+	begin
3898	+	FRelation := FRelationNodes;
3899	+	while Assigned(FRelation) and
3900	+	(FRelation.RelationName <> Relation) do
3901	+	FRelation := FRelation.NextRelation;
3902	+	if not Assigned(FRelation) then
3903	+	FRelation := Add_Node(Relation, Field);
3904	+	Result := false;
3905	+	FField := FRelation.FieldNodes;
3906	+	while Assigned(FField) do
3907	+	if FField.FieldName = Field then
3908	+	begin
3909	+	Result := Ffield.IDENTITY_COLUMN;
3910	+	Exit;
3911	+	end
3912	+	else
3913	+	FField := Ffield.NextField;
3914	+	end;
3915	+
3916		Procedure FreeNodes;
3917		var
3918		FRelation : TRelationNode;
#	Line 3793 | Line 3946 | begin
3946		FieldIndex := 0;
3947		if (Length(FMappedFieldPosition) < SourceQuery.MetaData.Count) then
3948		SetLength(FMappedFieldPosition, SourceQuery.MetaData.Count);
3949	<	Query.SQL.Text := DefaultSQL;
3949	>	if FDatabaseInfo.ODSMajorVersion >= 12 then
3950	>	Query.SQL.Text := DefaultSQLODS12
3951	>	else
3952	>	Query.SQL.Text := DefaultSQL;
3953		Query.Prepare;
3954		SetLength(FAliasNameMap, SourceQuery.MetaData.Count);
3955		SetLength(FAliasNameList, SourceQuery.MetaData.Count);
#	Line 3807 | Line 3963 | begin
3963		FieldName := getSQLName;
3964		FAliasNameList[i] := DBAliasName;
3965		FieldSize := 0;
3966	+	FieldDataSize := GetSize;
3967		FieldPrecision := 0;
3968		FieldNullable := IsNullable;
3969		CharSetSize := 0;
#	Line 3819 | Line 3976 | begin
3976		their values }
3977		SQL_VARYING, SQL_TEXT:
3978		begin
3979	<	FirebirdAPI.CharSetWidth(getCharSetID,CharSetSize);
3980	<	CharSetName := FirebirdAPI.GetCharsetName(getCharSetID);
3981	<	FirebirdAPI.CharSetID2CodePage(getCharSetID,FieldCodePage);
3982	<	FieldSize := GetSize div CharSetSize;
3979	>	if not Database.Attachment.CharSetWidth(getCharSetID,CharSetSize) then
3980	>	CharSetSize := 1;
3981	>	CharSetName := Database.Attachment.GetCharsetName(getCharSetID);
3982	>	Database.Attachment.CharSetID2CodePage(getCharSetID,FieldCodePage);
3983	>	FieldSize := FieldDataSize div CharSetSize;
3984		FieldType := ftString;
3985		end;
3986		{ All Doubles/Floats should be cast to doubles }
#	Line 3873 | Line 4031 | begin
4031		FieldSize := -getScale;
4032		end
4033		else
4034	<	FieldType := ftFloat
4034	>	FieldType := ftFloat;
4035		end;
4036		SQL_TIMESTAMP: FieldType := ftDateTime;
4037		SQL_TYPE_TIME: FieldType := ftTime;
#	Line 3883 | Line 4041 | begin
4041		FieldSize := sizeof (TISC_QUAD);
4042		if (getSubtype = 1) then
4043		begin
4044	<	FirebirdAPI.CharSetWidth(getCharSetID,CharSetSize);
4045	<	CharSetName := FirebirdAPI.GetCharsetName(getCharSetID);
4046	<	FirebirdAPI.CharSetID2CodePage(getCharSetID,FieldCodePage);
4044	>	if not Database.Attachment.CharSetWidth(getCharSetID,CharSetSize) then
4045	>	CharSetSize := 1;
4046	>	CharSetName := Database.Attachment.GetCharsetName(getCharSetID);
4047	>	Database.Attachment.CharSetID2CodePage(getCharSetID,FieldCodePage);
4048		FieldType := ftMemo;
4049		end
4050		else
#	Line 3917 | Line 4076 | begin
4076		Name := FieldAliasName;
4077		FAliasNameMap[FieldNo-1] := DBAliasName;
4078		Size := FieldSize;
4079	+	DataSize := FieldDataSize;
4080		Precision := FieldPrecision;
4081		Required := not FieldNullable;
4082		RelationName := aRelationName;
#	Line 3928 | Line 4088 | begin
4088		ArrayBounds := aArrayBounds;
4089		if (FieldName <> '') and (RelationName <> '') then
4090		begin
4091	+	IdentityColumn := Is_IDENTITY_COLUMN(RelationName, FieldName);
4092		if Has_COMPUTED_BLR(RelationName, FieldName) then
4093		begin
4094		Attributes := [faReadOnly];
#	Line 3999 | Line 4160 | begin
4160		for i := 0 to SQLParams.GetCount - 1 do
4161		begin
4162		cur_field := DataSource.DataSet.FindField(SQLParams[i].Name);
4163	<	cur_param := SQLParams[i];
4164	<	if (cur_field <> nil) then begin
4163	>	if (cur_field <> nil) then
4164	>	begin
4165	>	cur_param := SQLParams[i];
4166		if (cur_field.IsNull) then
4167		cur_param.IsNull := True
4168	<	else case cur_field.DataType of
4168	>	else
4169	>	case cur_field.DataType of
4170		ftString:
4171		cur_param.AsString := cur_field.AsString;
4172		ftBoolean:
#	Line 4013 | Line 4176 | begin
4176		ftInteger:
4177		cur_param.AsLong := cur_field.AsInteger;
4178		ftLargeInt:
4179	<	cur_param.AsInt64 := TLargeIntField(cur_field).AsLargeInt;
4179	>	cur_param.AsInt64 := cur_field.AsLargeInt;
4180		ftFloat, ftCurrency:
4181		cur_param.AsDouble := cur_field.AsFloat;
4182		ftBCD:
#	Line 4672 | Line 4835 | begin
4835		Transaction.StartTransaction;
4836		end;
4837
4838	<	function TIBCustomDataSet.PSGetTableName: string;
4838	>	function TIBCustomDataSet.PsGetTableName: string;
4839		begin
4840		//  if not FInternalPrepared then
4841		//    InternalPrepare;
#	Line 4767 | Line 4930 | end;
4930		function TIBCustomDataSet.GetFieldData(Field: TField; Buffer: Pointer;
4931		NativeFormat: Boolean): Boolean;
4932		begin
4933	<	if (Field.DataType = ftBCD) and not NativeFormat then
4933	>	{These datatypes use IBX conventions and not TDataset conventions}
4934	>	if (Field.DataType in [ftBCD,ftDateTime,ftDate,ftTime]) and not NativeFormat then
4935		Result := InternalGetFieldData(Field, Buffer)
4936		else
4937		Result := inherited GetFieldData(Field, Buffer, NativeFormat);
#	Line 4793 | Line 4957 | end;
4957		procedure TIBCustomDataSet.SetFieldData(Field: TField; Buffer: Pointer;
4958		NativeFormat: Boolean);
4959		begin
4960	<	if (not NativeFormat) and (Field.DataType = ftBCD) then
4960	>	{These datatypes use IBX conventions and not TDataset conventions}
4961	>	if (not NativeFormat) and (Field.DataType in [ftBCD,ftDateTime,ftDate,ftTime]) then
4962		InternalSetfieldData(Field, Buffer)
4963		else
4964		inherited SetFieldData(Field, buffer, NativeFormat);
#	Line 4813 | Line 4978 | begin
4978		inherited Destroy;
4979		end;
4980
4981	<	procedure TIBDataSetUpdateObject.SetRefreshSQL(Value: TStrings);
4981	>	procedure TIBDataSetUpdateObject.SetRefreshSQL(value: TStrings);
4982		begin
4983		FRefreshSQL.Assign(Value);
4984		end;
4985
4986	+	procedure TIBDataSetUpdateObject.InternalSetParams(Params: ISQLParams;
4987	+	buff: PChar);
4988	+	begin
4989	+	if not Assigned(DataSet) then Exit;
4990	+	DataSet.SetInternalSQLParams(Params, buff);
4991	+	end;
4992	+
4993		procedure TIBDataSetUpdateObject.InternalSetParams(Query: TIBSQL; buff: PChar);
4994		begin
4995	+	InternalSetParams(Query.Params,buff);
4996	+	end;
4997	+
4998	+	procedure TIBDataSetUpdateObject.UpdateRecordFromQuery(QryResults: IResults;
4999	+	Buffer: PChar);
5000	+	begin
5001		if not Assigned(DataSet) then Exit;
5002	<	DataSet.SetInternalSQLParams(Query, buff);
5002	>	DataSet.UpdateRecordFromQuery(QryResults, Buffer);
5003		end;
5004
5005		function TIBDSBlobStream.GetSize: Int64;
#	Line 4884 | Line 5062 | end;
5062
5063		procedure TIBGenerator.SetIncrement(const AValue: integer);
5064		begin
5065	+	if FIncrement = AValue then Exit;
5066		if AValue < 0 then
5067	<	raise Exception.Create('A Generator Increment cannot be negative');
5068	<	FIncrement := AValue
5067	>	IBError(ibxeNegativeGenerator,[]);
5068	>	FIncrement := AValue;
5069	>	SetQuerySQL;
5070		end;
5071
5072	<	function TIBGenerator.GetNextValue(ADatabase: TIBDatabase;
4893	<	ATransaction: TIBTransaction): integer;
5072	>	procedure TIBGenerator.SetTransaction(AValue: TIBTransaction);
5073		begin
5074	<	with TIBSQL.Create(nil) do
5075	<	try
5076	<	Database := ADatabase;
5077	<	Transaction := ATransaction;
5078	<	if not assigned(Database) then
5079	<	IBError(ibxeCannotSetDatabase,[]);
5080	<	if not assigned(Transaction) then
5081	<	IBError(ibxeCannotSetTransaction,[]);
5082	<	with Transaction do
5083	<	if not InTransaction then StartTransaction;
5084	<	SQL.Text := Format('Select Gen_ID(%s,%d) as ID From RDB$Database',[FGeneratorName,Increment]);
5085	<	Prepare;
5074	>	FQuery.Transaction := AValue;
5075	>	end;
5076	>
5077	>	procedure TIBGenerator.SetQuerySQL;
5078	>	begin
5079	>	FQuery.SQL.Text := Format('Select Gen_ID(%s,%d) From RDB$Database',[FGeneratorName,Increment]);
5080	>	end;
5081	>
5082	>	function TIBGenerator.GetDatabase: TIBDatabase;
5083	>	begin
5084	>	Result := FQuery.Database;
5085	>	end;
5086	>
5087	>	function TIBGenerator.GetTransaction: TIBTransaction;
5088	>	begin
5089	>	Result := FQuery.Transaction;
5090	>	end;
5091	>
5092	>	procedure TIBGenerator.SetDatabase(AValue: TIBDatabase);
5093	>	begin
5094	>	FQuery.Database := AValue;
5095	>	end;
5096	>
5097	>	procedure TIBGenerator.SetGeneratorName(AValue: string);
5098	>	begin
5099	>	if FGeneratorName = AValue then Exit;
5100	>	FGeneratorName := AValue;
5101	>	SetQuerySQL;
5102	>	end;
5103	>
5104	>	function TIBGenerator.GetNextValue: integer;
5105	>	begin
5106	>	with FQuery do
5107	>	begin
5108	>	Transaction.Active := true;
5109		ExecQuery;
5110		try
5111	<	Result := FieldByName('ID').AsInteger
5111	>	Result := Fields[0].AsInteger
5112		finally
5113		Close
5114		end;
4913	–	finally
4914	–	Free
5115		end;
5116		end;
5117
#	Line 4919 | Line 5119 | constructor TIBGenerator.Create(Owner: T
5119		begin
5120		FOwner := Owner;
5121		FIncrement := 1;
5122	+	FQuery := TIBSQL.Create(nil);
5123	+	end;
5124	+
5125	+	destructor TIBGenerator.Destroy;
5126	+	begin
5127	+	if assigned(FQuery) then FQuery.Free;
5128	+	inherited Destroy;
5129		end;
5130
5131
5132		procedure TIBGenerator.Apply;
5133		begin
5134	<	if (FGeneratorName <> '') and (FFieldName <> '') and Owner.FieldByName(FFieldName).IsNull then
5135	<	Owner.FieldByName(FFieldName).AsInteger := GetNextValue(Owner.Database,Owner.Transaction);
5134	>	if assigned(Database) and assigned(Transaction) and
5135	>	(FGeneratorName <> '') and (FFieldName <> '') and Owner.FieldByName(FFieldName).IsNull then
5136	>	Owner.FieldByName(FFieldName).AsInteger := GetNextValue;
5137		end;
5138
5139

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