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unit Test07;
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{$mode objfpc}{$H+}
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{Test 7: Open and read from Employee Database using TIBSQL}
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{ This is a simple use of IBX to access the employee database in console mode.
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The program opens the database, runs a query and writes the result to stdout.
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}
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interface
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uses
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Classes, SysUtils, TestApplication, IBXTestBase, IB, IBCustomDataSet, IBDatabase, IBSQL;
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const
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aTestID = '07';
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aTestTitle = 'Open and read from Employee Database using IBSQL';
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type
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{ TTest07 }
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TTest07 = class(TIBXTestBase)
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private
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FIBSQL: TIBSQL;
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protected
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procedure CreateObjects(Application: TTestApplication); override;
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function GetTestID: AnsiString; override;
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function GetTestTitle: AnsiString; override;
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procedure InitTest; override;
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public
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procedure RunTest(CharSet: AnsiString; SQLDialect: integer); override;
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end;
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implementation
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const
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sqlExample =
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'with recursive Depts As ( '+
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'Select DEPT_NO, DEPARTMENT, HEAD_DEPT, cast(DEPARTMENT as VarChar(256)) as DEPT_PATH,'+
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'cast(DEPT_NO as VarChar(64)) as DEPT_KEY_PATH '+
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'From DEPARTMENT Where HEAD_DEPT is NULL '+
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'UNION ALL '+
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'Select D.DEPT_NO, D.DEPARTMENT, D.HEAD_DEPT, Depts.DEPT_PATH || '' / '' || D.DEPARTMENT as DEPT_PATH,'+
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'Depts.DEPT_KEY_PATH || '';'' || D.DEPT_NO as DEPT_KEY_PATH '+
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'From DEPARTMENT D '+
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'JOIN Depts On D.HEAD_DEPT = Depts.DEPT_NO '+
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')'+
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'Select A.EMP_NO, A.FIRST_NAME, A.LAST_NAME, A.PHONE_EXT, A.HIRE_DATE, A.DEPT_NO, A.JOB_CODE,'+
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'A.JOB_GRADE, A.JOB_COUNTRY, A.SALARY, A.FULL_NAME, D.DEPT_PATH, D.DEPT_KEY_PATH '+
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'From EMPLOYEE A '+
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'JOIN Depts D On D.DEPT_NO = A.DEPT_NO';
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{ TTest07 }
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procedure TTest07.CreateObjects(Application: TTestApplication);
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begin
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inherited CreateObjects(Application);
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FIBSQL := TIBSQL.Create(Application);
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FIBSQL.Database := IBDatabase;
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end;
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function TTest07.GetTestID: AnsiString;
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begin
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Result := aTestID;
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end;
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function TTest07.GetTestTitle: AnsiString;
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begin
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Result := aTestTitle;
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end;
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procedure TTest07.InitTest;
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begin
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inherited InitTest;
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IBDatabase.DatabaseName := Owner.GetEmployeeDatabaseName;
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ReadWriteTransaction;
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end;
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procedure TTest07.RunTest(CharSet: AnsiString; SQLDialect: integer);
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var stats: TPerfCounters;
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begin
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IBDatabase.Connected := true;
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with FIBSQL do
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begin
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SQL.Text := sqlExample + ' Order By 1';
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Transaction.Active := true;
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Prepare;
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PrintMetaData(MetaData);
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Statement.EnableStatistics(true);
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writeln(OutFile,Plan);
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ExecQuery;
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try
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while not EOF do
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begin
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ReportResult(Current);
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Next;
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end;
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finally
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Close;
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end;
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if Statement.GetPerfStatistics(stats) then
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WritePerfStats(stats);
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PrintAffectedRows(IBQuery);
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writeln(OutFile);
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writeln(OutFile,'------------------------------------------------------');
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writeln(OutFile,'With Named Parameter');
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SQL.Text := sqlExample + ' Where Hire_Date < :HireDate';
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Transaction.Active := true;
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ParamByName('HireDate').AsDateTime := StrToDateTime('1/1/1991');
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ExecQuery;
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try
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while not EOF do
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begin
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ReportResult(Current);
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Next;
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end;
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finally
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Close;
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end;
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writeln(OutFile);
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writeln(OutFile,'With Positional Parameter');
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ParamCheck := false;
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SQL.Text := sqlExample + ' Where Hire_Date < ?';
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Transaction.Active := true;
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Params[0].AsDateTime := StrToDateTime('1/1/1990');
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ExecQuery;
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try
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while not EOF do
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begin
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ReportResult(Current);
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Next;
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end;
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finally
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Close;
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end;
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writeln(OutFile);
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writeln(OutFile,'Get Employee Project');
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ParamCheck := true;
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Transaction.Active := true;
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SQL.Text := 'Select * From GET_EMP_PROJ(:EMP_NO)';
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ParamByName('EMP_NO').AsInteger := 4;
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PrintMetaData(MetaData);
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ExecQuery;
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try
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while not EOF do
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begin
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ReportResult(Current);
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Next;
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end;
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finally
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Close;
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end;
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writeln(OutFile);
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writeln(OutFile,'Call Delete Employee - exception expected');
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SQL.Text := 'Execute Procedure Delete_EMPLOYEE :EMP_NO';
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ParamByName('EMP_NO').AsInteger := 11;
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try
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ExecQuery;
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except on E:Exception do
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writeln(OutFile,'Terminated with Exception:',E.Message);
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end;
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Transaction.Rollback;
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end;
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end;
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initialization
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RegisterTest(TTest07);
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end.
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