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tony |
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unit Test8;
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{$mode objfpc}{$H+}
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{$codepage utf8}
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{Test 8: Create and read back an Array with 2 dimensions}
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{
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1. Create an empty database and populate with a single table including a two
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dimensional array of varchar(16) column.
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2. Select all and show metadata including array metadata.
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3. Insert a row but leave array null
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4. Show result.
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5. Update row with a populated array and show results.
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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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{ TTest8 }
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TTest8 = class(TTestBase)
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private
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procedure UpdateDatabase(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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'MyArray VarChar(16) [0:16, -1:7] Character Set ISO8859_2,'+
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'Primary Key(RowID)'+
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')';
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sqlInsert = 'Insert into TestData(RowID,Title) Values(:RowID,:Title)';
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sqlUpdate = 'Update TestData Set MyArray = ? Where RowID = 1';
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{ TTest8 }
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procedure TTest8.UpdateDatabase(Attachment: IAttachment);
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var Transaction: ITransaction;
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Statement: IStatement;
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ResultSet: IResultSet;
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i,j,k : integer;
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ar: IArray;
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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.Prepare(Transaction,'Select * from TestData');
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PrintMetaData(Statement.GetMetaData);
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Statement := Attachment.PrepareWithNamedParameters(Transaction,sqlInsert);
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ParamInfo(Statement.GetSQLParams);
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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 := '2D Array';
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end;
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Statement.Execute;
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Statement := Attachment.Prepare(Transaction,'Select * from TestData');
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ReportResults(Statement);
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Statement := Attachment.Prepare(Transaction,sqlUpdate);
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ar := Attachment.CreateArray(Transaction,'TestData','MyArray');
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if ar <> nil then
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begin
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k := 50;
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for i := 0 to 16 do
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for j := -1 to 7 do
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begin
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ar.SetAsString([i,j],'A' + IntToStr(k));
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Inc(k);
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end;
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Statement.SQLParams[0].AsArray := ar;
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Statement.Execute;
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end;
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Statement := Attachment.Prepare(Transaction,'Select * from TestData');
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ReportResults(Statement);
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end;
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function TTest8.TestTitle: string;
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begin
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Result := 'Test 8: Create and read back an Array with 2 dimensions';
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end;
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procedure TTest8.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(CharSet);
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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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UpdateDatabase(Attachment);
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Attachment.DropDatabase;
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end;
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initialization
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RegisterTest(TTest8);
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end.
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