Package org.activiti.engine.impl.pvm.process

Examples of org.activiti.engine.impl.pvm.process.ActivityImpl

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  public Class< ? extends BaseElement> getHandledType() {
    return ReceiveTask.class;
  }
 
  protected void executeParse(BpmnParse bpmnParse, ReceiveTask receiveTask) {
    ActivityImpl activity = createActivityOnCurrentScope(bpmnParse, receiveTask, BpmnXMLConstants.ELEMENT_TASK_RECEIVE);
    activity.setActivityBehavior(bpmnParse.getActivityBehaviorFactory().createReceiveTaskActivityBehavior(receiveTask));
   
    activity.setAsync(receiveTask.isAsynchronous());
    activity.setExclusive(!receiveTask.isNotExclusive());
  }
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    return CallActivity.class;
  }
 
  protected void executeParse(BpmnParse bpmnParse, CallActivity callActivity) {
   
    ActivityImpl activity = createActivityOnCurrentScope(bpmnParse, callActivity, BpmnXMLConstants.ELEMENT_CALL_ACTIVITY);
    activity.setScope(true);
    activity.setAsync(callActivity.isAsynchronous());
    activity.setActivityBehavior(bpmnParse.getActivityBehaviorFactory().createCallActivityBehavior(callActivity));
  }
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    return BoundaryEvent.class;
  }
 
  protected void executeParse(BpmnParse bpmnParse, BoundaryEvent boundaryEvent) {
   
    ActivityImpl parentActivity = findActivity(bpmnParse, boundaryEvent.getAttachedToRefId());
    if (parentActivity == null) {
      logger.warn("Invalid reference in boundary event. Make sure that the referenced activity is defined in the same scope as the boundary event " +  boundaryEvent.getId());
      return;
    }
  
    ActivityImpl nestedActivity = createActivityOnScope(bpmnParse, boundaryEvent, BpmnXMLConstants.ELEMENT_EVENT_BOUNDARY, parentActivity);
    bpmnParse.setCurrentActivity(nestedActivity);

    EventDefinition eventDefinition = null;
    if (!boundaryEvent.getEventDefinitions().isEmpty()) {
      eventDefinition = boundaryEvent.getEventDefinitions().get(0);
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  @SuppressWarnings("unchecked")
  public void execute(InterpretableExecution execution) {
    InterpretableExecution propagatingExecution = null;

    ActivityImpl activity = (ActivityImpl) execution.getActivity();
    // if this transition is crossing a scope boundary
    if (activity.isScope()) {
     
      InterpretableExecution parentScopeInstance = null;
      // if this is a concurrent execution crossing a scope boundary
      if (execution.isConcurrent() && !execution.isScope()) {
        // first remove the execution from the current root
        InterpretableExecution concurrentRoot = (InterpretableExecution) execution.getParent();
        parentScopeInstance = (InterpretableExecution) execution.getParent().getParent();

        log.debug("moving concurrent {} one scope up under {}", execution, parentScopeInstance);
        List<InterpretableExecution> parentScopeInstanceExecutions = (List<InterpretableExecution>) parentScopeInstance.getExecutions();
        List<InterpretableExecution> concurrentRootExecutions = (List<InterpretableExecution>) concurrentRoot.getExecutions();
        // if the parent scope had only one single scope child
        if (parentScopeInstanceExecutions.size()==1) {
          // it now becomes a concurrent execution
          parentScopeInstanceExecutions.get(0).setConcurrent(true);
        }
       
        concurrentRootExecutions.remove(execution);
        parentScopeInstanceExecutions.add(execution);
        execution.setParent(parentScopeInstance);
        execution.setActivity(activity);
        propagatingExecution = execution;
       
        // if there is only a single concurrent execution left
        // in the concurrent root, auto-prune it.  meaning, the
        // last concurrent child execution data should be cloned into
        // the concurrent root.  
        if (concurrentRootExecutions.size()==1) {
          InterpretableExecution lastConcurrent = concurrentRootExecutions.get(0);
          if (lastConcurrent.isScope()) {
            lastConcurrent.setConcurrent(false);
           
          } else {
            log.debug("merging last concurrent {} into concurrent root {}", lastConcurrent, concurrentRoot);
           
            // We can't just merge the data of the lastConcurrent into the concurrentRoot.
            // This is because the concurrent root might be in a takeAll-loop.  So the
            // concurrent execution is the one that will be receiving the take
            concurrentRoot.setActivity((ActivityImpl) lastConcurrent.getActivity());
            concurrentRoot.setActive(lastConcurrent.isActive());
            lastConcurrent.setReplacedBy(concurrentRoot);
            lastConcurrent.remove();
          }
        }

      } else if (execution.isConcurrent() && execution.isScope()) {
        log.debug("scoped concurrent {} becomes concurrent and remains under {}", execution, execution.getParent());

        // TODO!
        execution.destroy();
        propagatingExecution = execution;
       
      } else {
        propagatingExecution = (InterpretableExecution) execution.getParent();
        propagatingExecution.setActivity((ActivityImpl) execution.getActivity());
        propagatingExecution.setTransition(execution.getTransition());
        propagatingExecution.setActive(true);
        log.debug("destroy scope: scoped {} continues as parent scope {}", execution, propagatingExecution);
        execution.destroy();
        execution.remove();
      }
     
    } else {
      propagatingExecution = execution;
    }
   
    // if there is another scope element that is ended
    ScopeImpl nextOuterScopeElement = activity.getParent();
    TransitionImpl transition = propagatingExecution.getTransition();
    ActivityImpl destination = transition.getDestination();
    if (transitionLeavesNextOuterScope(nextOuterScopeElement, destination)) {
      propagatingExecution.setActivity((ActivityImpl) nextOuterScopeElement);
      propagatingExecution.performOperation(TRANSITION_NOTIFY_LISTENER_END);
    } else {
      propagatingExecution.performOperation(TRANSITION_NOTIFY_LISTENER_TAKE);
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  public boolean isAsync(InterpretableExecution execution) {
    return false;
  }

  public void execute(InterpretableExecution execution) {
    ActivityImpl activity = (ActivityImpl) execution.getActivity();
   
    ActivityBehavior activityBehavior = activity.getActivityBehavior();
    if (activityBehavior==null) {
      throw new PvmException("no behavior specified in "+activity);
    }

    log.debug("{} executes {}: {}", execution, activity, activityBehavior.getClass().getName());
   
    try {
      if(Context.getProcessEngineConfiguration() != null && Context.getProcessEngineConfiguration().getEventDispatcher().isEnabled()) {
        Context.getProcessEngineConfiguration().getEventDispatcher().dispatchEvent(
            ActivitiEventBuilder.createActivityEvent(ActivitiEventType.ACTIVITY_STARTED,
                execution.getActivity().getId(),
                (String) execution.getActivity().getProperty("name"),
                execution.getId(),
                execution.getProcessInstanceId(),
                execution.getProcessDefinitionId(),
                (String) activity.getProperties().get("type"),
                activity.getActivityBehavior().getClass().getCanonicalName()));
      }
     
      activityBehavior.execute(execution);
    } catch (RuntimeException e) {
      throw e;
    } catch (Exception e) {
      LogMDC.putMDCExecution(execution);
      throw new PvmException("couldn't execute activity <"+activity.getProperty("type")+" id=\""+activity.getId()+"\" ...>: "+e.getMessage(), e);
    }
  }
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  @SuppressWarnings("unchecked")
  @Override
  protected void eventNotificationsCompleted(InterpretableExecution execution) {
   
    ActivityImpl activity = (ActivityImpl) execution.getActivity();
    ActivityImpl parentActivity = activity.getParentActivity();
   
    if(Context.getProcessEngineConfiguration() != null && Context.getProcessEngineConfiguration().getEventDispatcher().isEnabled()) {
      if (execution instanceof ExecutionEntity) {
        ExecutionEntity executionEntity = (ExecutionEntity) execution;
        Context.getProcessEngineConfiguration().getEventDispatcher().dispatchEvent(
            ActivitiEventBuilder.createActivityEvent(ActivitiEventType.ACTIVITY_COMPLETED, execution.getActivity().getId(),
                (String) executionEntity.getActivity().getProperties().get("name"),
                execution.getId(),
                execution.getProcessInstanceId(), execution.getProcessDefinitionId(),
                (String) executionEntity.getActivity().getProperties().get("type"),
                executionEntity.getActivity().getActivityBehavior().getClass().getCanonicalName()));
      }
    }

    // if the execution is a single path of execution inside the process definition scope
    if ( (parentActivity!=null)
         &&(!parentActivity.isScope())
          ) {
      execution.setActivity(parentActivity);
      execution.performOperation(ACTIVITY_END);
     
    } else if (execution.isProcessInstanceType()) {
      // dispatch process completed event
      if (Context.getProcessEngineConfiguration() != null && Context.getProcessEngineConfiguration().getEventDispatcher().isEnabled()) {
        Context.getProcessEngineConfiguration().getEventDispatcher().dispatchEvent(
          ActivitiEventBuilder.createEntityEvent(ActivitiEventType.PROCESS_COMPLETED, execution));
      }

      execution.performOperation(PROCESS_END);
   
    } else if (execution.isScope()) {

      ActivityBehavior parentActivityBehavior = (parentActivity!=null ? parentActivity.getActivityBehavior() : null);
      if (parentActivityBehavior instanceof CompositeActivityBehavior) {
        CompositeActivityBehavior compositeActivityBehavior = (CompositeActivityBehavior) parentActivity.getActivityBehavior();
       
        if(activity.isScope() && activity.getOutgoingTransitions().isEmpty()) {
          // there is no transition destroying the scope
          InterpretableExecution parentScopeExecution = (InterpretableExecution) execution.getParent();
          execution.destroy();
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      }
      execution.setExecutionListenerIndex(0);
      execution.setEventName(null);
      execution.setEventSource(null);

      ActivityImpl activity = (ActivityImpl) execution.getActivity();
      ActivityImpl nextScope = findNextScope(activity.getParent(), transition.getDestination());
      execution.setActivity(nextScope);
     
      // Firing event that transition is being taken      
      if(Context.getProcessEngineConfiguration() != null && Context.getProcessEngineConfiguration().getEventDispatcher().isEnabled()) {
        Context.getProcessEngineConfiguration().getEventDispatcher().dispatchEvent(
          ActivitiEventBuilder.createSequenceFlowTakenEvent(ActivitiEventType.SEQUENCEFLOW_TAKEN, transition.getId(),
              activity.getId(), (String) activity.getProperties().get("name") ,(String) activity.getProperties().get("type"), activity.getActivityBehavior().getClass().getCanonicalName(),
              nextScope.getId(), (String) nextScope.getProperties().get("name"), (String) nextScope.getProperties().get("type"), nextScope.getActivityBehavior().getClass().getCanonicalName()));
      }
     
      execution.performOperation(TRANSITION_CREATE_SCOPE);
    }
  }
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    }
  }

  /** finds the next scope to enter.  the most outer scope is found first */
  public static ActivityImpl findNextScope(ScopeImpl outerScopeElement, ActivityImpl destination) {
    ActivityImpl nextScope = destination;
    while( (nextScope.getParent() instanceof ActivityImpl)
           && (nextScope.getParent() != outerScopeElement)
         ) {
      nextScope = (ActivityImpl) nextScope.getParent();
    }
    return nextScope;
  }
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    return org.activiti.engine.impl.pvm.PvmEvent.EVENTNAME_START;
  }

  @Override
  protected void eventNotificationsCompleted(InterpretableExecution execution) {
    ActivityImpl activity = (ActivityImpl) execution.getActivity();
    ProcessDefinitionImpl processDefinition = execution.getProcessDefinition();
    StartingExecution startingExecution = execution.getStartingExecution();
    if (activity==startingExecution.getInitial()) {
      execution.disposeStartingExecution();
      execution.performOperation(ACTIVITY_EXECUTE);

    } else {
      List<ActivityImpl> initialActivityStack = processDefinition.getInitialActivityStack(startingExecution.getInitial());
      int index = initialActivityStack.indexOf(activity);
      activity = initialActivityStack.get(index+1);

      InterpretableExecution executionToUse = null;
      if (activity.isScope()) {
        executionToUse = (InterpretableExecution) execution.getExecutions().get(0);
      } else {
        executionToUse = execution;
      }
      executionToUse.setActivity(activity);
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    InterpretableExecution superExecution = execution.getSuperExecution();
    SubProcessActivityBehavior subProcessActivityBehavior = null;

    // copy variables before destroying the ended sub process instance
    if (superExecution!=null) {
      ActivityImpl activity = (ActivityImpl) superExecution.getActivity();
      subProcessActivityBehavior = (SubProcessActivityBehavior) activity.getActivityBehavior();
      try {
        subProcessActivityBehavior.completing(superExecution, execution);
      } catch (RuntimeException e) {
          log.error("Error while completing sub process of execution {}", execution, e);
          throw e;       
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