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unit Test13;
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{$mode objfpc}{$H+}
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{Test 13: Open and read from Employee Database with ISQLMonitor}
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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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ISQLMonitor is used to trace the activity.
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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,
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IBQuery, IBInternals, IBSQLMonitor;
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const
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aTestID = '13';
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aTestTitle = 'Open and read from Employee Database with ISQLMonitor';
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type
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{ TTest13 }
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TTest13 = class(TIBXTestBase)
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private
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FIBSQLMonitor: TIBSQLMonitor;
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FLog: TStringList;
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procedure HandleOnSQL(EventText: String; EventTime : TDateTime);
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procedure ShowStatistics(Sender: TObject);
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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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destructor Destroy; override;
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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 First 2 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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{ TTest13 }
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procedure TTest13.HandleOnSQL(EventText: String; EventTime: TDateTime);
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begin
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FLog.Add('*Monitor* ' {+DateTimeToStr(EventTime)}+' '+EventText);
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end;
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procedure TTest13.ShowStatistics(Sender: TObject);
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begin
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writeln(OutFile,FIBSQLMonitor.ReadCount,' ISQL Monitor Messages Received');
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end;
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procedure TTest13.CreateObjects(Application: TTestApplication);
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begin
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inherited CreateObjects(Application);
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FIBSQLMonitor := TIBSQLMonitor.Create(Application);
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FIBSQLMonitor.TraceFlags := [tfQPrepare, tfQExecute, tfQFetch, tfError, tfStmt, tfConnect,
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tfTransact, tfBlob, tfService, tfMisc];
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IBDatabase.TraceFlags := [tfQPrepare, tfQExecute, tfQFetch, tfError, tfStmt, tfConnect,
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tfTransact, tfBlob, tfService, tfMisc];
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FIBSQLMonitor.OnSQL := @HandleOnSQL;
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FIBSQLMonitor.OnMonitoringDisabled := @ShowStatistics;
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FIBSQLMonitor.Enabled := true;
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FLog := TStringList.Create;
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end;
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function TTest13.GetTestID: AnsiString;
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begin
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Result := aTestID;
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end;
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function TTest13.GetTestTitle: AnsiString;
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begin
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Result := aTestTitle;
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end;
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procedure TTest13.InitTest;
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begin
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inherited InitTest;
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IBDatabase.DatabaseName := Owner.GetEmployeeDatabaseName;
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ReadOnlyTransaction;
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end;
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destructor TTest13.Destroy;
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begin
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FLog.Free;
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inherited Destroy;
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end;
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procedure TTest13.RunTest(CharSet: AnsiString; SQLDialect: integer);
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var stats: TPerfCounters;
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i: integer;
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begin
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writeln(OutFile);
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EnableMonitoring;
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CheckSynchronize(1);
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with IBQuery do
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begin
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AllowAutoActivateTransaction := true;
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Unidirectional := true;
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SQL.Text := sqlExample;
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EnableStatistics := true;
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Active := true;
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PrintDataSet(IBQuery);
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if 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,'Reconnect');
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IBDatabase.ReConnect;
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Unidirectional := false;
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Active := true;
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PrintDataSet(IBQuery);
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end;
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IBDatabase.Connected := false;
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CheckSynchronize(1);
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DisableMonitoring;
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writeln(Outfile,MonitorHook.GetWriteCount,' ISQL Monitor Messages written');
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Sleep(1000);
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for i := 0 to FLog.Count - 1 do
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writeln(OutFile,FLog[i]);
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writeln(OutFile,FIBSQLMonitor.ReadCount,' ISQL Monitor Messages Received');
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end;
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initialization
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RegisterTest(TTest13);
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end.
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