JBPM中 使用JobExecutor执行timer定义的job

Job executor在jbpm.cfg.xml中是被缺省注释的，所以只要去掉此行即可通过JobExecutor来定时触发timer中的event-handler了

<jbpm-configuration>

  <import resource="jbpm.default.cfg.xml" />
  <import resource="jbpm.businesscalendar.cfg.xml" />
  <import resource="jbpm.tx.hibernate.cfg.xml" />
  <import resource="jbpm.jpdl.cfg.xml" />
  <import resource="jbpm.bpmn.cfg.xml" />
  <import resource="jbpm.identity.cfg.xml" />

  <!-- Job executor is excluded for running the example test cases. -->
  <!-- To enable timers and messages in production use, this should be included. -->
  <import resource="jbpm.jobexecutor.cfg.xml" />
   

</jbpm-configuration>

测试程序

/**
 * @author hzhlu
 */
public class CopyOfTimerRepeatTest extends JbpmTestCase {

	String	deploymentId;

	protected void setUp() throws Exception {
		super.setUp();

		deploymentId = repositoryService.createDeployment().addResourceFromClasspath(
				"org/jbpm/examples/timer/repeat/process.jpdl.xml").deploy();
	}

	protected void tearDown() throws Exception {
		repositoryService.deleteDeploymentCascade(deploymentId);

		super.tearDown();
	}

	public void testTimerRepeat() {
		ProcessInstance processInstance = executionService.startProcessInstanceByKey("TimerRepeat");

		// 查询进入状态后是否已经建立起timer job
		Job job = managementService.createJobQuery().processInstanceId(processInstance.getId()).uniqueResult();
		System.out.println("job info:" + job.getDueDate() + "  " + job.toString());

		assertNull(executionService.getVariable(processInstance.getId(), "escalations"));

 		String msg;
		for (int i = 0; i < 10; i++) {
			long difference = job.getDueDate().getTime() - System.currentTimeMillis();
 			msg = "Job触发倒计时: " + difference +   " check escalations："
					+ executionService.getVariable(processInstance.getId(), "escalations");
			System.out.println(">>> " + msg);
 
			// 延时1秒
			try {
				Thread.sleep(1000);
			} catch (InterruptedException e) {
 				e.printStackTrace();
			}
		}

	 
	}
}

JPDL 定义文件，3秒钟后触发，然后每隔5秒再触发事件

<?xml version="1.0" encoding="UTF-8"?>

<process name="TimerRepeat" xmlns="http://jbpm.org/4.4/jpdl">

  <start g="19,50,48,48">
    <transition to="guardedWait" />
  </start>

  <state name="guardedWait" g="98,46,127,52">
    <on event="timeout1">
       <timer duedate="3 seconds" repeat="5 seconds" />
       <event-listener class="org.jbpm.examples.timer.repeat.Escalate" />
    </on>
    <transition name="go on" to="next step" g="-16,-17"/>
  </state>

  <state name="next step" g="283,46,83,53"/>

</process>

事件处理程序

public class Escalate implements EventListener {

	private static final long	serialVersionUID	= 1L;

	public void notify(EventListenerExecution execution) {
		System.out.println("Escalate.notify()");
		Integer escalations = (Integer) execution.getVariable("escalations");
		if (escalations == null) {
			execution.setVariable("escalations", 1);
		} else {
			execution.setVariable("escalations", escalations + 1);
		}
	}
}

执行结果
job info:2010-07-27 14:55:43.0  timer[9|2010-07-27 14:55:43|timeout1]
>>> Job触发倒计时: 2907 check escalations：null
>>> Job触发倒计时: 1907 check escalations：null
>>> Job触发倒计时: 891 check escalations：null
Escalate.notify()
>>> Job触发倒计时: -109 check escalations：1
>>> Job触发倒计时: -1125 check escalations：1
>>> Job触发倒计时: -2125 check escalations：1
>>> Job触发倒计时: -3125 check escalations：1
>>> Job触发倒计时: -4140 check escalations：1
Escalate.notify()
>>> Job触发倒计时: -5140 check escalations：2
>>> Job触发倒计时: -6140 check escalations：2

评论

2 楼 shi12957 2012-08-08  

您好，我现在用JBPM4.4用到其定时器功能，我发现按照例子里面写的不能用，老提示inactive-scope，请问您遇到过类似的问题没？如何解决？谢谢

1 楼 liangfeng366 2011-07-13