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

Comparing ibx/trunk/runtime/IBTable.pas (file contents):
Revision 5 by tony, Fri Feb 18 16:26:16 2011 UTC vs.
Revision 45 by tony, Tue Dec 6 10:33:46 2016 UTC

#	Line 24 | Line 24
24		{       Corporation. All Rights Reserved.                                }
25		{    Contributor(s): Jeff Overcash                                       }
26		{                                                                        }
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                                                 }
31	+	{                                                                        }
32		{************************************************************************}
33
34		unit IBTable;
35
36		{$Mode Delphi}
37
38	+	{$codepage UTF8}
39	+
40		interface
41
42		uses SysUtils, Classes, DB, IB,  IBCustomDataSet,
43	<	IBHeader, IBSQL, IBUtils;
43	>	IBSQL, IBUtils;
44
45		type
46
#	Line 142 | Line 149 | type
149		property TableNames: TStrings read GetTableNames;
150
151		published
152	+	property AutoCommit;
153		property Active;
154		property BufferChunks;
155		property CachedUpdates;
156	<	property Constraints stored ConstraintsStored;
156	>	property DataSetCloseAction;
157	>	//    property Constraints stored ConstraintsStored;
158		property DefaultIndex: Boolean read FDefaultIndex write FDefaultIndex default True;
159		property FieldDefs stored FieldDefsStored;
160		property Filter;
#	Line 173 | Line 182 | type
182
183		implementation
184
185	+	uses FBMessages;
186	+
187		{ TIBTable }
188
189		constructor TIBTable.Create(AOwner: TComponent);
#	Line 229 | Line 240 | begin
240		GenerateUpdateSQL;
241		FRegenerateSQL := False;
242		end;
243	+	{  writeln(SelectSQL.Text);
244	+	writeln(InsertSQL.Text);
245	+	writeln(DeleteSQL.Text);
246	+	writeln(ModifySQL.Text); }
247		SetParams;
248		inherited InternalOpen;
249		end;
#	Line 290 | Line 305 | end;
305
306		procedure TIBTable.InitFieldDefs;
307		var
308	<	sqlscale: Integer;
308	>	DidActivate: Boolean;
309		Query: TIBSQL;
310		begin
311		if FTableName = '' then IBError(ibxeNoTableName, [nil]);
312	<	if (InternalPrepared) then InternalInitFieldDefs else
312	>	if (InternalPrepared) then
313	>	InternalInitFieldDefs
314	>	else
315		begin
316	<	Database.InternalTransaction.StartTransaction;
316	>	{Get the field defs from a simple query on the table}
317	>	ActivateConnection;
318		Query := TIBSQL.Create(self);
319		try
320	<	Query.GoToFirstRecordOnExecute := False;
321	<	Query.Database := DataBase;
322	<	Query.Transaction := Database.InternalTransaction;
323	<	Query.SQL.Text := 'Select R.RDB$FIELD_NAME, R.RDB$FIELD_POSITION, ' + {do not localize}
324	<	'F.RDB$COMPUTED_BLR, F.RDB$DEFAULT_VALUE, ' + {do not localize}
325	<	'F.RDB$NULL_FLAG, ' + {do not localize}
326	<	'F.RDB$FIELD_LENGTH, F.RDB$FIELD_SCALE, ' + {do not localize}
309	<	'F.RDB$FIELD_TYPE, F.RDB$FIELD_SUB_TYPE, ' + {do not localize}
310	<	'F.RDB$EXTERNAL_LENGTH, F.RDB$EXTERNAL_SCALE, F.RDB$EXTERNAL_TYPE ' + {do not localize}
311	<	'from RDB$RELATION_FIELDS R, RDB$FIELDS F ' + {do not localize}
312	<	'where R.RDB$RELATION_NAME = ' + {do not localize}
313	<	'''' +
314	<	FormatIdentifierValue(Database.SQLDialect,
315	<	QuoteIdentifier(DataBase.SQLDialect, FTableName)) +
316	<	''' ' +
317	<	'and R.RDB$FIELD_SOURCE = F.RDB$FIELD_NAME '+ {do not localize}
318	<	'order by R.RDB$FIELD_POSITION'; {do not localize}
319	<
320	<	Query.Prepare;
321	<	Query.ExecQuery;
322	<	FieldDefs.BeginUpdate;
323	<	FieldDefs.Clear;
324	<	while (not Query.EOF) and (Query.Next <> nil) do
325	<	begin
326	<	with FieldDefs.AddFieldDef do
327	<	begin
328	<	(*           FieldNo := Query.Current.ByName('RDB$FIELD_POSITION').AsInteger; {do not localize}*)
329	<	Name := TrimRight(Query.Current.ByName('RDB$FIELD_NAME').AsString); {do not localize}
330	<	case Query.Current.ByName('RDB$FIELD_TYPE').AsInteger of {do not localize}
331	<	blr_varying, blr_text:
332	<	begin
333	<	DataType := ftString;
334	<	Size := Query.Current.ByName('RDB$FIELD_LENGTH').AsInteger; {do not localize}
335	<	end;
336	<	blr_float, blr_double, blr_d_float: DataType := ftFloat;
337	<	blr_short:
338	<	begin
339	<	sqlscale := Query.Current.ByName('RDB$FIELD_SCALE').AsInteger; {do not localize}
340	<	if (sqlscale = 0) then
341	<	DataType := ftSmallInt
342	<	else
343	<	begin
344	<	DataType := ftBCD;
345	<	Precision := 4;
346	<	end;
347	<	end;
348	<	blr_long:
320	>	Query.Database := DataBase;
321	>	Query.Transaction := Database.InternalTransaction;
322	>	DidActivate := false;
323	>	Query.SQL.Text := 'Select * from ' + QuoteIdentifier(DataBase.SQLDialect, FTableName);
324	>	with Query.Transaction do
325	>	begin
326	>	if not InTransaction then
327		begin
328	<	sqlscale := Query.Current.ByName('RDB$FIELD_SCALE').AsInteger; {do not localize}
329	<	if (sqlscale = 0) then
352	<	DataType := ftInteger
353	<	else if (sqlscale >= (-4)) then
354	<	begin
355	<	DataType := ftBCD;
356	<	Precision := 9;
357	<	end
358	<	else
359	<	DataType := ftFloat;
328	>	StartTransaction;
329	>	DidActivate := true
330		end;
331	<	blr_int64:
332	<	begin
333	<	sqlscale := Query.Current.ByName('RDB$FIELD_SCALE').AsInteger; {do not localize}
334	<	if (sqlscale = 0) then
335	<	DataType := ftLargeInt
366	<	else if (sqlscale >= (-4)) then
367	<	begin
368	<	DataType := ftBCD;
369	<	Precision := 18;
370	<	end
371	<	else
372	<	DataType := ftFloat;
373	<	end;
374	<	blr_timestamp: DataType := ftDateTime;
375	<	blr_sql_time: DataType := ftTime;
376	<	blr_sql_date: DataType := ftDate;
377	<	blr_blob:
378	<	if (Query.Current.ByName('RDB$FIELD_SUB_TYPE').AsInteger = 1) then {do not localize}
379	<	DataType := ftMemo
380	<	else
381	<	DataType := ftBlob;
382	<	blr_quad:
383	<	begin
384	<	DataType := ftUnknown;
385	<	Size := sizeof (TISC_QUAD);
386	<	end;
387	<	else
388	<	DataType := ftUnknown;
389	<	end;
390	<	if not (Query.Current.ByName('RDB$COMPUTED_BLR').IsNull) then {do not localize}
391	<	begin
392	<	Attributes := [faReadOnly];
393	<	InternalCalcField := True
394	<	end
395	<	else
396	<	InternalCalcField := False;
397	<	if ((not InternalCalcField) and
398	<	Query.Current.ByName('RDB$DEFAULT_VALUE').IsNull and {do not localize}
399	<	(Query.Current.ByName('RDB$NULL_FLAG').AsInteger = 1) )then {do not localize}
400	<	begin
401	<	Attributes := [faRequired];
402	<	Required := True;
403	<	end;
404	<	end;
405	<	end;
406	<	FieldDefs.EndUpdate;
331	>	end;
332	>	Query.Prepare;
333	>	FieldDefsFromQuery(Query);
334	>	if DidActivate then
335	>	Query.Transaction.Rollback;
336		finally
337	<	Query.free;
409	<	Database.InternalTransaction.Commit;
337	>	Query.Free;
338		end;
339		end;
340		end;
#	Line 555 | Line 483 | var
483		Query.SQL.Text := 'Alter Table ' +  {do not localize}
484		QuoteIdentifier(DataBase.SQLDialect, FTableName) +
485		' Drop Constraint ' +
486	<	QuoteIdentifier(DataBase.SQLDialect, Query.Current.ByName('RDB$CONSTRAINT_NAME').AsString);
486	>	QuoteIdentifier(DataBase.SQLDialect, Query.FieldByName('RDB$CONSTRAINT_NAME').AsString);
487		Query.Prepare;
488		Query.ExecQuery;
489		IndexDefs.Updated := False;
#	Line 640 | Line 568 | var
568		Opts: TIndexOptions;
569		Flds: string;
570		Query, SubQuery: TIBSQL;
571	+	fn: string;
572	+	aField: TFieldDef;
573		begin
574		if not (csReading in ComponentState) then begin
575		if not Active and not FSwitchingIndex  then
#	Line 661 | Line 591 | begin
591		QuoteIdentifier(DataBase.SQLDialect, FTableName)) + '''';
592		Query.Prepare;
593		Query.ExecQuery;
594	<	while (not Query.EOF) and (Query.Next <> nil) do
594	>	while (not Query.EOF) and Query.Next do
595		begin
596		with IndexDefs.AddIndexDef do
597		begin
598	<	Name := TrimRight(Query.Current.ByName('RDB$INDEX_NAME').AsString); {do not localize}
598	>	Name := TrimRight(Query.FieldByName('RDB$INDEX_NAME').AsString); {do not localize}
599		Opts := [];
600		if Pos ('RDB$PRIMARY', Name) = 1 then Include(Opts, ixPrimary); {do not localize} {mbcs ok}
601	<	if Query.Current.ByName('RDB$UNIQUE_FLAG').AsInteger = 1 then Include(Opts, ixUnique); {do not localize}
602	<	if Query.Current.ByName('RDB$INDEX_TYPE').AsInteger = 2  then Include(Opts, ixDescending); {do not localize}
601	>	if Query.FieldByName('RDB$UNIQUE_FLAG').AsInteger = 1 then Include(Opts, ixUnique); {do not localize}
602	>	if Query.FieldByName('RDB$INDEX_TYPE').AsInteger = 2  then Include(Opts, ixDescending); {do not localize}
603		Options := Opts;
604	<	if (Query.Current.ByName('RDB$SEGMENT_COUNT').AsInteger = 1) then {do not localize}
605	<	Fields := Trim(Query.Current.ByName('RDB$FIELD_NAME').AsString) {do not localize}
604	>	if (Query.FieldByName('RDB$SEGMENT_COUNT').AsInteger = 1) then {do not localize}
605	>	begin
606	>	fn := Trim(Query.FieldByName('RDB$FIELD_NAME').AsString); {do not localize}
607	>	aField := GetFieldDefFromAlias(fn);
608	>	if assigned(aField) then
609	>	Fields := aField.Name
610	>	else
611	>	Fields := fn;
612	>	end
613		else begin
614		SubQuery := TIBSQL.Create(self);
615		try
#	Line 688 | Line 625 | begin
625		SubQuery.Prepare;
626		SubQuery.ExecQuery;
627		Flds := '';
628	<	while (not SubQuery.EOF) and (SubQuery.Next <> nil) do
628	>	while (not SubQuery.EOF) and SubQuery.Next do
629		begin
630	+	fn := TrimRight(SubQuery.FieldByName('RDB$FIELD_NAME').AsString); {do not localize}
631	+	aField := GetFieldDefFromAlias(fn);
632	+	if assigned(aField) then
633	+	fn := aField.Name;
634		if (Flds = '') then
635	<	Flds := TrimRight(SubQuery.Current.ByName('RDB$FIELD_NAME').AsString) {do not localize}
635	>	Flds := fn
636		else begin
637		Query.Next;
638	<	Flds := Flds + ';' + TrimRight(SubQuery.Current[0].AsString);
638	>	Flds := Flds + ';' + fn;
639		end;
640		end;
641		Fields := Flds;
#	Line 778 | Line 719 | var
719		FieldList := FieldList +
720		QuoteIdentifier(DataBase.SQLDialect, Name) +
721		' CHAR(' + IntToStr(Size) + ')'; {do not localize}
722	<	ftBoolean, ftSmallint, ftWord:
722	>	ftBoolean:
723	>	FieldList := FieldList +
724	>	QuoteIdentifier(DataBase.SQLDialect, Name) +
725	>	' BOOLEAN'; {do not localize}
726	>	ftSmallint, ftWord:
727		FieldList := FieldList +
728		QuoteIdentifier(DataBase.SQLDialect, Name) +
729		' SMALLINT'; {do not localize}
#	Line 976 | Line 921 | begin
921		QuoteIdentifier(DataBase.SQLDialect, FTableName)) + '''';
922		Query.Prepare;
923		Query.ExecQuery;
924	<	if (Query.Current[0].AsInteger <> 0) or
925	<	(Query.Current[1].AsInteger <> 8) then
924	>	if (Query.Fields[0].AsInteger <> 0) or
925	>	(Query.Fields[1].AsInteger <> 8) then
926		Result := False
927		else
928		Result := True;
#	Line 1260 | Line 1205 | begin
1205		' where RDB$VIEW_BLR is NULL and RDB$SYSTEM_FLAG = 0'; {do not localize}
1206		Query.Prepare;
1207		Query.ExecQuery;
1208	<	while (not Query.EOF) and (Query.Next <> nil) do
1209	<	FNameList.Add (TrimRight(Query.Current[0].AsString));
1208	>	while (not Query.EOF) and Query.Next  do
1209	>	FNameList.Add (TrimRight(Query.Fields[0].AsString));
1210		finally
1211		Query.Free;
1212		Database.InternalTransaction.Commit;
#	Line 1294 | Line 1239 | var
1239		SQL: TStrings;
1240		OrderByStr: string;
1241		bWhereClausePresent: Boolean;
1242	+	fn: string;
1243	+	aField: TFieldDef;
1244		begin
1245		bWhereClausePresent := False;
1246		Database.CheckActive;
#	Line 1329 | Line 1276 | begin
1276		begin
1277		if i > 0 then
1278		SQL.Text := SQL.Text + 'AND ';
1279	+	aField := FieldDefs.Find(FDetailFieldsList.Strings[i]);
1280	+	if assigned(aField) then
1281	+	fn := GetDBAliasName(aField.FieldNo)
1282	+	else
1283	+	fn := FDetailFieldsList.Strings[i]; {something wrong if we get here - but should word}
1284		SQL.Text := SQL.Text +
1285	<	QuoteIdentifier(DataBase.SQLDialect, FDetailFieldsList.Strings[i]) +
1334	<	' = :' +
1335	<	QuoteIdentifier(DataBase.SQLDialect, FMasterFieldsList.Strings[i]);
1285	>	QuoteIdentifier(DataBase.SQLDialect, fn) + ' = :' + FMasterFieldsList.Strings[i];
1286		end;
1287		end;
1288		if OrderByStr <> '' then
#	Line 1370 | Line 1320 | var
1320		WhereAllFieldList := WhereAllFieldList + ' AND ';
1321		end;
1322		InsertFieldList := InsertFieldList +
1323	<	QuoteIdentifier(DataBase.SQLDialect, Name);
1324	<	InsertParamList := InsertParamList + ':' +
1375	<	QuoteIdentifier(DataBase.SQLDialect, Name);
1323	>	QuoteIdentifier(DataBase.SQLDialect, GetDBAliasName(FieldNo));
1324	>	InsertParamList := InsertParamList + ':' +  Name;
1325		UpdateFieldList := UpdateFieldList +
1326	<	QuoteIdentifier(DataBase.SQLDialect, Name) +
1327	<	' = :' +
1379	<	QuoteIdentifier(DataBase.SQLDialect, Name);
1326	>	QuoteIdentifier(DataBase.SQLDialect, GetDBAliasName(FieldNo)) +
1327	>	' = :' + Name;
1328		if (DataType <> ftBlob) and (DataType <>ftMemo) then
1329		WhereAllFieldList := WhereAllFieldList +
1330	<	QuoteIdentifier(DataBase.SQLDialect, Name) + ' = :' +
1383	<	QuoteIdentifier(DataBase.SQLDialect, Name);{do not localize}
1330	>	QuoteIdentifier(DataBase.SQLDialect, GetDBAliasName(FieldNo)) + ' = :' +  Name;
1331		end;
1332		end;
1333		end;
#	Line 1389 | Line 1336 | var
1336		procedure GenerateWherePrimaryFieldList;
1337		var
1338		i: Integer;
1339	<	tmp: String;
1339	>	tmp, fn: String;
1340	>	aField: TFieldDef;
1341		begin
1342		i := 1;
1343		while i <= Length(FPrimaryIndexFields) do
1344		begin
1345		tmp := ExtractFieldName(FPrimaryIndexFields, i);
1346	+	aField := FieldDefs.Find(tmp);
1347	+	if assigned(aField) then
1348	+	fn := GetDBAliasName(aField.FieldNo)
1349	+	else
1350	+	fn := tmp; {something wrong if we get here - but will work in most cases}
1351		tmp :=
1352	<	QuoteIdentifier(DataBase.SQLDialect, tmp) +  ' = :' +
1352	>	QuoteIdentifier(DataBase.SQLDialect, fn) +  ' = :' +
1353		QuoteIdentifier(DataBase.SQLDialect, tmp);{do not localize}
1354		if WherePrimaryFieldList <> '' then
1355		WherePrimaryFieldList :=

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