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unit test2;
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{$mode objfpc}{$H+}
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{$codepage utf8}
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{Test 2: Open the employee database and run a query}
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{ This test opens the employee example databases with the supplied user name/password
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and runs a simple query with no parameters. Note that the password parameter
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is first supplied empty and then updated.
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Both the output metadata and the query plan are printed out, followed by the results of the query.
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A specific employee record is then queried, first using a positional parameter
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and then a parameter by name. In each case, the SQL Parameter metadata is also
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printed followed by the query results.
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Finally, the database is explicitly disconnected.
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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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{ TTest2 }
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TTest2 = class(TTestBase)
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private
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procedure DoQuery(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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{ TTest2 }
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procedure TTest2.DoQuery(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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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 First 3 * from EMPLOYEE',3);
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PrintMetaData(Statement.GetMetaData);
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writeln(OutFile,'Plan = ' ,Statement.GetPlan);
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writeln(OutFile,Statement.GetSQLText);
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writeln(OutFile);
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ReportResults(Statement);
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Statement := Attachment.Prepare(Transaction,'Select * from EMPLOYEE Where EMP_NO = ?',3);
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writeln(OutFile,Statement.GetSQLText);
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ParamInfo(Statement.SQLParams);
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Statement.GetSQLParams[0].AsInteger := 8;
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ReportResults(Statement);
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writeln(OutFile,'With param names');
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Statement := Attachment.PrepareWithNamedParameters(Transaction,'Select * from EMPLOYEE Where EMP_NO = :EMP_NO',3);
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Statement.SetRetainInterfaces(true);
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try
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writeln(OutFile,Statement.GetSQLText);
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ParamInfo(Statement.SQLParams);
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Statement.GetSQLParams.ByName('EMP_NO').AsInteger := 8;
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ReportResults(Statement);
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finally
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Statement.SetRetainInterfaces(false);
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end;
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end;
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function TTest2.TestTitle: string;
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begin
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Result := 'Test 2: Open the employee database and run a query';
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end;
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procedure TTest2.RunTest(CharSet: string; SQLDialect: integer);
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var Attachment: IAttachment;
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DPB: IDPB;
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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(' ');
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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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DPB.Find(isc_dpb_password).setAsString(Owner.GetPassword);
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try
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Attachment := FirebirdAPI.OpenDatabase(Owner.GetEmployeeDatabaseName,DPB);
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except on e: Exception do
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writeln(OutFile,'Open Database fails ',E.Message);
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end;
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writeln(OutFile,'Opening ',Owner.GetEmployeeDatabaseName);
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Attachment := FirebirdAPI.OpenDatabase(Owner.GetEmployeeDatabaseName,DPB);
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writeln(OutFile,'Database Open');
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DoQuery(Attachment);
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Attachment.Disconnect;
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end;
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initialization
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RegisterTest(TTest2);
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end.
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