Examples of org.uengine.kernel.Activity

org.uengine.kernel.Activity
This class plays the most important role in the uEngine ,which is composed of key attributes and methods of general behaviors, properties and callback messages of Activity Types. To understand uEngine's process model, you may need to understand 'Composite Pattern' (which is one of most well-known design pattern also used in java.io.File) first. That is, this Activity class and ComplexActivity has a self-contained relationship for easy-activity-type extension and easy-to-hold the block-based (structured) process model. @author Jinyoung Jang @see org.uengine.kernel.ComplexActivity

          theEventHandler = ehs[i];
          break;
        }
      }
      
      Activity handlerActivity = theEventHandler.getHandlerActivity();
      
      HumanActivity humanActivity = null;
      
      if(handlerActivity instanceof SubProcessActivity){
        SubProcessActivity subProcessActivity = (SubProcessActivity)theEventHandler.getHandlerActivity();

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    log("getActivityProperty", new Object[]{processDefinition, tracingTag, propertyName});
    try{      
      if(!UEngineUtil.isNotEmpty(processDefinition)) throw new UEngineException("Check the definition id");
      
      ProcessDefinition definition = getDefinition(processDefinition);
      Activity activity = definition.getActivity(tracingTag);
      propertyName = propertyName.substring(0,1).toUpperCase() + propertyName.substring(1);//.toLowerCase();
      Object returnVal = activity.getClass().getMethod("get" + propertyName, new Class[]{}).invoke(activity, new Object[]{});
              
      return (Serializable)returnVal;
    }catch(Exception e){
      e.printStackTrace();
      throw new RemoteException("ProcessManagerError:"+e.getMessage(), e);

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    try{      
      if(instanceId==null) return null; //guard against illegal requests


      ProcessInstance instance = getInstance(instanceId);
      ProcessDefinition definition = instance.getProcessDefinition();
      Activity activity = definition.getActivity(tracingTag);
      propertyName = propertyName.substring(0,1).toUpperCase() + propertyName.substring(1);//.toLowerCase();
      //the pattern of instance property (stateful) is 'getXXX(instance)'
      Object returnVal;
      try{ 
        returnVal = activity.getClass().getMethod("get" + propertyName, new Class[]{ProcessInstance.class}).invoke(activity, new Object[]{instance});
      }catch(NoSuchMethodException e){
        try{
          returnVal = activity.getClass().getMethod("is" + propertyName, new Class[]{ProcessInstance.class}).invoke(activity, new Object[]{instance});
        }catch(NoSuchMethodException msme){
          throw new UEngineException("No such activity property named as '" + propertyName + "'");
        }
      }

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      ProcessDefinition definition = instance.getProcessDefinition();
      
      if(definition==null)
        throw new UEngineException("Can't find the definition for instance '" + instance.getInstanceId() + "'");
        
      Activity activity = definition.getActivity(tracingTag);


      if(activity==null)
        throw new UEngineException("No such activity with tracing tag : " + tracingTag + " in definition '" + definition.getId() + "'");


      propertyName = propertyName.substring(0,1).toUpperCase() + propertyName.substring(1);//.toLowerCase();
      //the pattern of instance property (stateful) setting method is 'setXXX(instance, value)'                        
      activity.getClass().getMethod("set" + propertyName, new Class[]{ProcessInstance.class, valueType}).invoke(activity, new Object[]{instance, value});
    }catch(Exception e){
      e.printStackTrace();
      throw new RemoteException("ProcessManagerError:"+e.getMessage(), e);
    }
  }

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      ProcessDefinition definition = instance.getProcessDefinition();
      
      if(definition==null)
        throw new UEngineException("Can't find the definition for instance '" + instance.getInstanceId() + "'");
        
      Activity activity = definition.getActivity(tracingTag);


      if(activity==null)
        throw new UEngineException("No such activity with tracing tag : " + tracingTag + " in definition '" + definition.getId() + "'");


      Class[] actualParameterTypes = new Class[parameterTypes.length+1];
      actualParameterTypes[0] = ProcessInstance.class;
      System.arraycopy(parameterTypes, 0, actualParameterTypes, 1, parameterTypes.length);


      Object[] actualParameters = new Object[parameterTypes.length+1];
      actualParameters[0] = instance;
      System.arraycopy(parameters, 0, actualParameters, 1, parameterTypes.length);
      
      return (Serializable)activity.getClass().getMethod(actionName, actualParameterTypes).invoke(activity, actualParameters);
      
    }catch(Exception e){
      e.printStackTrace();
      throw new RemoteException("ProcessManagerError:"+e.getMessage(), e);
    }

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  public void setFault(String instanceId, String tracingTag, Exception fault) throws RemoteException{
    try{
      ProcessInstance instance = getInstance(instanceId);
  
      ProcessDefinition definition = instance.getProcessDefinition();
      Activity activity = definition.getActivity(tracingTag);
      activity.fireFault(instance, fault);
      
    }catch(Exception e){
      e.printStackTrace();
      throw new RemoteException("ProcessManagerError:"+e.getMessage(), e);
    }

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    return true;
  }
  
  public boolean isNextGraphActivity(GraphActivity next) {
    boolean isNextGraphActivity = true;
    Activity thisActivity = this.getReferenceActivity();


    if (
        thisActivity instanceof EndActivity
        || (
            thisActivity != null
            && this.getNext().size() > 0
            && next.isEndGraphActivity
            && !(thisActivity.getParentActivity() instanceof LoopActivity)
        )
    ) {
      isNextGraphActivity = false;
    }

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          resultingBlock.addChildActivity(sequenceBlock);
          resultingBlock = sequenceBlock; 
        }
        
        Activity thisAct = createBlockActivity();
        resultingBlock.addChildActivity(thisAct);
        
        insertedActivities.add(resultingBlock);
        insertedActivities.add(thisAct);

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    ComplexActivity cActivity = (ComplexActivity)activity;
    
    for(Enumeration enumeration = cActivity.getChildActivities().elements(); enumeration.hasMoreElements(); ){
      sb.append("<td><img src=images/arrow.gif></td><td>");
      Activity child = (Activity)enumeration.nextElement();
      
      ActivityViewer viewer = DefaultActivityViewer.createViewer(child);
      StringBuilder childHTML = viewer.render(child, instance, options);
      
      sb.append(childHTML);

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    ComplexActivity cActivity = (ComplexActivity)activity;
    //System.out.println("ProcessDefinitionViewer::render : number of child activities: " + cActivity.getChildActivities().size());
    
    for(Enumeration enumeration = cActivity.getChildActivities().elements(); enumeration.hasMoreElements(); ){
      Activity child = (Activity)enumeration.nextElement();
      ActivityUtil activityUtil = new ActivityUtil();


      if (child instanceof ScopeActivity) indexOfScopeActivity++;
      if (viewOnlyScopeIndex > -1 && indexOfScopeActivity != viewOnlyScopeIndex) continue;
      
      if (!activityUtil.isVisible(child, options)) {
        boolean isGrayArrow = false;
        if (!definitionView)
          try{
            isGrayArrow = Activity.STATUS_READY.equals(child.getStatus(instance));
          }catch(Exception e){}
        
        if (isVertical) sb.append("<tr>");


        sb.append("<td align=center><img src="+imagePathRoot+"images/arrow" + (isVertical ? "_vertical":"") +".gif" +  (isGrayArrow ? " style='filter:alpha(opacity="+unfocusedOpacity+")'":"") +" /></td>");

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org.uengine.components.activityfilters.ReservationActivityFilter

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