TaskGetLastError
string TaskGetLastError ( value task, BYREF string strError = NULL );
Rückgabewert
Rückgabewert |
Beschreibung |
string |
Die Fehlermeldung, die zuletzt am TASK-Objekt task aufgetreten ist. |
Parameter
task
Das gültige TASK-Objekt, dessen letzte Fehlermeldung ausgelesen soll.
strError
Die Zielvariable, die mit der letzten Fehlermeldung geladen werden soll.
Bemerkungen
Liefert die Klartextmeldung die beim letzten Fehler im TASK-Objekt task aufgetreten ist. Ist die Zielvariable strError angegeben, so wird diese dorthin kopiert.
Beispiel
////////////////////////////////////////////////////////////////////// //Globale Variablen value rest = 0; value task = 0; value RestWorker = 0; value REST_CONNECT_START = 0; value REST_CONNECT_RUNNING = 10; value REST_REQUEST_START = 20; value REST_REQUEST_RUNNING = 30; value REST_REQUEST_DONE = 40; value REST_ERROR = -100; value REST_STANDBY = -1; string strLastError; string strResponse; ////////////////////////////////////////////////////////////////////// //_MainCycle // ////////////////////////////////////////////////////////////////////// switch (RestWorker) case REST_CONNECT_START: //ip.jsontest.com liefert als Antwort die IP-Adresse des anfragenden Clients task = RestConnectAsync(rest, "http://ip.jsontest.com"); if (task == NULL) RestWorker = REST_ERROR; break; end RestWorker = REST_CONNECT_RUNNING; break; case REST_CONNECT_RUNNING: if (TaskFinished(task)) if(!TaskSuccessful(task)) RestWorker = REST_ERROR; else TaskClose(task); RestWorker = REST_REQUEST_START; end end break; case REST_REQUEST_START: task = RestFullRequestAsync(rest, "GET", "/"); if (task == NULL) RestWorker = REST_ERROR; break; end RestWorker = REST_REQUEST_RUNNING; break; case REST_REQUEST_RUNNING: if (TaskFinished(task)) if(!TaskSuccessful(task)) RestWorker = REST_ERROR; break; else TaskGetResultString(task, strResponse); strResponse = JsonExpand(strResponse); //Inhalt von strResponse: //{ // "ip": "82.165.12.98" //} RestWorker = REST_REQUEST_DONE; end end break; case REST_ERROR: if (rest != NULL) if (task != NULL) strLastError = TaskGetLastError(task); else strLastError = RestGetLastError(rest); end end RestWorker = REST_REQUEST_DONE; break; case REST_REQUEST_DONE: if (task != NULL) TaskClose(task); end RestDisconnect(rest); RestWorker = REST_STANDBY; break; end
Siehe auch TaskFinished, TaskAborted, TaskCanceled, TaskCompleted, TaskStatus, TaskCancel