JBPM 3.2.2動態修改duedate

花了2個多星期，終於將JBPM的duedate做成動態修改。
需求是這樣的，主管發起任務，任務根據實際需求要求有完成的限期，用timer可以實現
<task name="orgTime">
<timer name="varTimer" duedate="1 business days" repeat="10 business seconds">
<!--<script>System.out.println("I reset my timer!");</script>-->
<action class="com.pujin.oa.workflow.allotTask.jbpm.handler.OverTimeActionHandler">
</action>
</timer>
</task>
這樣做duedate在流程定義發佈的時候就被限死了，就不能跟據實際需求而修改，如果在duedate放變量上去，會發現不可能能實現，怎麼辦呢？
在timer其實有這樣的事件觸發：timer-create,當要創建時間的時候就可以先去修改duedate，這樣就能做成動態修改 符合實際需求了。
具體代碼如下：
<task-node name="timerControl">
<!-- 創建timer的時候觸發修改時間事件 -->
<event type="timer-create">
<action name="timerCreated"
class="com.pujin.oa.workflow.allotTask.jbpm.handler.ChangeDueDateActionHandler">
<timerName>varTimer</timerName>
<delay>#{newDelay}</delay>
</action>
</event>
<task name="orgTime">
<timer name="varTimer" duedate="1 business days" repeat="10 business seconds">
<!--<script>System.out.println("I reset my timer!");</script>-->
<action class="com.pujin.oa.workflow.allotTask.jbpm.handler.OverTimeActionHandler">
</action>
</timer>
</task>
<transition to="audit"></transition>
</task-node>
在com.pujin.oa.workflow.allotTask.jbpm.handler.ChangeDueDateActionHandler中我們實現duedate修改：
package com.pujin.oa.workflow.allotTask.jbpm.handler;
import java.util.Date;
import org.jbpm.calendar.BusinessCalendar;
import org.jbpm.calendar.Duration;
import org.jbpm.graph.def.ActionHandler;
import org.jbpm.graph.exe.ExecutionContext;
import org.jbpm.job.Timer;
import org.jbpm.scheduler.SchedulerService;
import org.jbpm.svc.Services;
import com.pujin.common.database.hibernate.AbstractHibernateDAO;
import com.pujin.common.util.Tools;
import com.pujin.oa.bo.OaTaskPhase;
import com.pujin.oa.workflow.allotTask.service.AllotTaskService;
public class ChangeDueDateActionHandler extends AbstractHibernateDAO implements ActionHandler {
static BusinessCalendar businessCalendar = new BusinessCalendar();
String timerName;
String delay;
public void execute(ExecutionContext executionContext) throws Exception {
// TODO Auto-generated method stub
Timer timer = executionContext.getTimer();
if (timer != null && timerName.equals(timer.getName())) {
OaTaskPhase oaTaskPhase = (OaTaskPhase)executionContext.getVariable("oaTaskPhase");
int dueDate = Tools.countDays(Tools.getToday(), Tools.date2string(oaTaskPhase.getPhaseterm()), "yyyy-MM-dd");
//Duration duration = new Duration(dueDate);
Duration duration = new Duration("2 minutes");
SchedulerService schedulerService = (SchedulerService) Services.getCurrentService(Services.SERVICENAME_SCHEDULER);
Date dueDateDate = businessCalendar.add(new Date(), duration);
timer.setDueDate(dueDateDate);
schedulerService.createTimer(timer);
}else{

}
}
public String getDelay() {
return delay;
}
public void setDelay(String delay) {
this.delay = delay;
}
public String getTimerName() {
return timerName;
}
public void setTimerName(String timerName) {
this.timerName = timerName;
}

}
其中：Duration duration = new Duration("2 minutes");這裏的2 minutes可以將你變量放進來。