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unit Test15;
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{$mode objfpc}{$H+}
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{$codepage UTF8}
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{Test 15: Blob Handling and BPBs}
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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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2. An image is inserted into the first.
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3. Win1252 text into the second with a Blob Filter request to transform to UTF8.
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4. The Data is read back and written out.
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}
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interface
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uses
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Classes, SysUtils, TestManager, IB;
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type
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{ TTest15 }
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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: string; override;
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procedure RunTest(CharSet: string; SQLDialect: integer); override;
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end;
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implementation
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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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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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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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{ TTest15 }
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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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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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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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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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function TTest15.TestTitle: string;
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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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procedure TTest15.RunTest(CharSet: string; 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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UpdateDatabase(Attachment);
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QueryDatabase(Attachment);
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Attachment.DropDatabase;
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end;
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initialization
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RegisterTest(TTest15);
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end.
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