Examples of org.openbp.server.engine.EngineExceptionHandlerEvent

org.openbp.server.engine.EngineExceptionHandlerEvent

The engine exception handler event is raised when an exception occured during the execution of a process. The {@link #setHandlingOption} attribute can be used to indicate to the engine how to proceed with the exception.By default, the engine will try to continue execution at the error socket of the current node and throw an exception if there is no error socket (handling option {@link #HANDLING_OPTION_ERROR_SOCKET}).
The handling option {@link #HANDLING_OPTION_CONTINUE} indicates that the handler has taken action and wants the processto continue at the current socket. The handler might have changed the current socket also.
The {@link #HANDLING_OPTION_RETHROW} option instructs the engine to propagate the error without any corrective action. @author Heiko Erhardt

   * Template method that will be called whenever an event occurs the observer is interested in.
   * @param e Event
   */
  public void observeEvent(ObserverEvent e)
  {
    EngineExceptionHandlerEvent ee = (EngineExceptionHandlerEvent) e;


    // Perform rollback
    StandardRollbackProcessor rollbackProcessor = new StandardRollbackProcessor();
    rollbackProcessor.setRollbackDataBehavior(RollbackDataBehavior.RESTORE_VARIABLES);
    rollbackProcessor.setRollbackPositionBehavior(RollbackPositionBehavior.MAINTAIN_POSITION);
    rollbackProcessor.performRollback(ee);


    // Continue at the error socket of the current node
    ee.setHandlingOption(EngineExceptionHandlerEvent.HANDLING_OPTION_ERROR_SOCKET);


    ee.skipSubsequentObservers();
  }

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Examples of org.openbp.server.engine.EngineExceptionHandlerEvent

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