activiti5.11跳转

activiti5.11的跳转问题，除了在流程定义文件中使用分支节点控制流程的转向外，在java程序代码中同样可以控制流程的转向。
如在流程定义文件中：

 <process id="process1" name="process1" isExecutable="true">
      
    <startEvent id="startevent1" name="Start"></startEvent>
    
    <sequenceFlow id="flow1" name="" sourceRef="startevent1" targetRef="serviceTask1"></sequenceFlow>
    <serviceTask id="serviceTask1" name="serviceTask1" activiti:class="com.activiti.testcase.turn.ServiceTask1Listener"/>
    
    <sequenceFlow id="s2" sourceRef="serviceTask1" targetRef="userTask2" ></sequenceFlow>
    <sequenceFlow id="s3" sourceRef="serviceTask1" targetRef="manualTask1" ></sequenceFlow>
    
    <userTask id="userTask2" name="userTask2" activiti:assignee="gonzo"></userTask>
    <manualTask id="manualTask1" name="manualTask1"></manualTask>

    <sequenceFlow id="s4" targetRef="userTask2" sourceRef="endevent1"></sequenceFlow>
    <sequenceFlow id="s5" targetRef="manualTask1" sourceRef="endevent1"></sequenceFlow>
    
    <endEvent id="endevent1" name="End"></endEvent>
  </process>

其中serviceTask 的类中是实现流程转向的具体代码。
首先说明：要使用serviceTask调用外部的java类，则该java类必须实现JavaDelegate或ActivityBehavior接口，若需要控制流程的转向则需实现 ActivityBehavior接口，因为该接口功能更强大。
来看ServiceTask1Listener类，该类只有一个execute方法：

public class ServiceTask1Listener implements ActivityBehavior {

	public void execute(ActivityExecution execution) throws Exception {
	
	 //流程定义id	
	 String procDefId = execution.getProcessDefinitionId();
	 
	 RepositoryServiceImpl repositoryService =  (RepositoryServiceImpl)execution.getEngineServices().getRepositoryService();
	 
	 //流程定义的实现
	 ProcessDefinitionImpl processDefinitionImpl =  (ProcessDefinitionImpl)repositoryService.getDeployedProcessDefinition(procDefId);
	
	 //当前执行的活动节点
	 ActivityImpl ac = (ActivityImpl)execution.getActivity();
	 //创建输出的执行路径
	 TransitionImpl transition =  ac.createOutgoingTransition("flow1");
	 
	 //设置输出路径的目标节点
	 ActivityImpl destination = new ActivityImpl("serviceTask1", processDefinitionImpl);
	 destination.setActivityBehavior(this);
	 //设置目标节点
	 transition.setDestination(destination);
	 
	 List<PvmTransition> pvms =  execution.getActivity().getOutgoingTransitions();
	 //[ s2,s3,flow1]
	 //选用刚刚创建的执行路径
	 execution.take(pvms.get(2));
	 
	}
}