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unit Test15; |
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{$IFDEF MSWINDOWS} |
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{$DEFINE WINDOWS} |
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{$ENDIF} |
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|
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{$IFDEF FPC} |
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{$mode delphi} |
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{$codepage UTF8} |
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{$ENDIF} |
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|
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{Test 15: Blob Handling and BPBs} |
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|
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{ |
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1. A database is created with two tables. One has an untyped Blob. the other |
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is UTF8 text. |
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|
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2. An image is inserted into the first. |
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|
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3. Win1252 text into the second with a Blob Filter request to transform to UTF8. |
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|
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4. The Data is read back and written out. |
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} |
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|
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interface |
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|
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uses |
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Classes, SysUtils, TestManager, IB; |
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|
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type |
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{ TTest15 } |
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|
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TTest15 = class(TTestBase) |
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private |
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procedure UpdateDatabase(Attachment: IAttachment); |
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procedure QueryDatabase(Attachment: IAttachment); |
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public |
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function TestTitle: AnsiString; override; |
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procedure RunTest(CharSet: AnsiString; SQLDialect: integer); override; |
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end; |
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|
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|
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implementation |
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|
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const |
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sqlCreateTable = |
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'Create Table TestData ('+ |
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'RowID Integer not null,'+ |
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'Title VarChar(32) Character Set UTF8,'+ |
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'BlobData Blob sub_type 0, '+ |
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'Primary Key(RowID)'+ |
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')'; |
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|
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sqlCreateTable2 = |
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'Create Table TestData2 ('+ |
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'RowID Integer not null,'+ |
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'Title VarChar(32) Character Set UTF8,'+ |
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'BlobData Blob sub_type 1 Character Set UTF8, '+ |
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'Primary Key(RowID)'+ |
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')'; |
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|
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sqlInsert = 'Insert into TestData(RowID,Title, BlobData) Values(:RowID,:Title,:BlobData)'; |
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sqlInsert2 = 'Insert into TestData2(RowID,Title, BlobData) Values(:RowID,:Title,:BlobData)'; |
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|
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{ TTest15 } |
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|
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procedure TTest15.UpdateDatabase(Attachment: IAttachment); |
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var Transaction: ITransaction; |
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Statement: IStatement; |
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aBlob: IBlob; |
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BPB: IBPB; |
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aText: RawByteString; |
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begin |
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Transaction := Attachment.StartTransaction([isc_tpb_write,isc_tpb_nowait,isc_tpb_concurrency],taCommit); |
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|
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Statement := Attachment.PrepareWithNamedParameters(Transaction,sqlInsert); |
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with Statement.GetSQLParams do |
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begin |
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ByName('rowid').AsInteger := 1; |
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ByName('title').AsString := 'Blob Test'; |
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ByName('BlobData').AsBlob := Attachment.CreateBlob(Transaction,'TestData','BlobData').LoadFromFile('testimage.jpg'); |
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end; |
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Statement.Execute; |
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|
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BPB := Attachment.AllocateBPB; |
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BPB.Add(isc_bpb_target_type).AsInteger := 1; |
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BPB.Add(isc_bpb_target_interp).AsInteger := 4; {utf8} |
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BPB.Add(isc_bpb_source_type).AsInteger := 1; |
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BPB.Add(isc_bpb_source_interp).AsInteger := 53; {WIN1252} |
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aText := #$C9#$63#$6F#$75#$74#$65#$20#$6D#$6F#$69; {Écoute moi' encoded in Win1252} |
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aBlob := Attachment.CreateBlob(Transaction,'TestData2','BlobData',BPB).SetString(aText); |
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Statement := Attachment.PrepareWithNamedParameters(Transaction,sqlInsert2); |
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with Statement.GetSQLParams do |
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begin |
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ByName('rowid').AsInteger := 1; |
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ByName('title').AsString := 'Blob Test'; |
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ByName('BlobData').AsBlob := aBlob; |
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end; |
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Statement.Execute; |
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end; |
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|
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procedure TTest15.QueryDatabase(Attachment: IAttachment); |
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var Transaction: ITransaction; |
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Statement: IStatement; |
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begin |
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Transaction := Attachment.StartTransaction([isc_tpb_read,isc_tpb_nowait,isc_tpb_concurrency],taCommit); |
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Statement := Attachment.Prepare(Transaction,'Select * from TestData '); |
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writeln(OutFile); |
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writeln(OutFile,'Testdata'); |
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writeln(OutFile); |
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ReportResults(Statement); |
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Statement := Attachment.Prepare(Transaction,'Select * from TestData2 '); |
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writeln(OutFile); |
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writeln(OutFile,'Testdata 2'); |
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writeln(OutFile); |
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ReportResults(Statement); |
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end; |
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|
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function TTest15.TestTitle: AnsiString; |
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begin |
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Result := 'Test 15: Blob Handling and BPBs'; |
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end; |
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|
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procedure TTest15.RunTest(CharSet: AnsiString; SQLDialect: integer); |
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var DPB: IDPB; |
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Attachment: IAttachment; |
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begin |
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DPB := FirebirdAPI.AllocateDPB; |
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DPB.Add(isc_dpb_user_name).setAsString(Owner.GetUserName); |
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DPB.Add(isc_dpb_password).setAsString(Owner.GetPassword); |
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DPB.Add(isc_dpb_lc_ctype).setAsString('UTF8'); |
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DPB.Add(isc_dpb_set_db_SQL_dialect).setAsByte(SQLDialect); |
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Attachment := FirebirdAPI.CreateDatabase(Owner.GetNewDatabaseName,DPB); |
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Attachment.ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_consistency],sqlCreateTable); |
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Attachment.ExecImmediate([isc_tpb_write,isc_tpb_wait,isc_tpb_consistency],sqlCreateTable2); |
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|
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UpdateDatabase(Attachment); |
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QueryDatabase(Attachment); |
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Attachment.DropDatabase; |
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end; |
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|
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initialization |
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RegisterTest(TTest15); |
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end. |
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|
