//设置了候选组
 <userTask id="deptLeaderAudit" name="部门领导审批" activiti:candidateGroups="deptLeader">
 </userTask>

<process id="leave" name="请假流程" isExecutable="true">
    <documentation>请假流程演示</documentation>
    <startEvent id="startevent1" name="Start" activiti:initiator="applyUserId"></startEvent>
    <userTask id="deptLeaderAudit" name="部门领导审批" activiti:candidateGroups="deptLeader"></userTask>
    <exclusiveGateway id="exclusivegateway5" name="Exclusive Gateway"></exclusiveGateway>
    <userTask id="modifyApply" name="调整申请" activiti:assignee="${applyUserId}">
      <extensionElements>
        <activiti:taskListener event="complete" delegateExpression="${afterModifyApplyContentProcessor}"></activiti:taskListener>
      </extensionElements>
    </userTask>
    <userTask id="hrAudit" name="人事审批" activiti:candidateGroups="hr"></userTask>
    <exclusiveGateway id="exclusivegateway6" name="Exclusive Gateway"></exclusiveGateway>
    <userTask id="reportBack" name="销假" activiti:assignee="${applyUserId}">
      <extensionElements>
        <activiti:taskListener event="complete" delegateExpression="${reportBackEndProcessor}"></activiti:taskListener>
      </extensionElements>
    </userTask>
    <endEvent id="endevent1" name="End"></endEvent>
    <exclusiveGateway id="exclusivegateway7" name="Exclusive Gateway"></exclusiveGateway>
    <sequenceFlow id="flow2" sourceRef="startevent1" targetRef="deptLeaderAudit"></sequenceFlow>
    <sequenceFlow id="flow3" sourceRef="deptLeaderAudit" targetRef="exclusivegateway5"></sequenceFlow>
    <sequenceFlow id="flow4" name="不同意" sourceRef="exclusivegateway5" targetRef="modifyApply">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${!deptLeaderPass}]]></conditionExpression>
    </sequenceFlow>
    <sequenceFlow id="flow5" name="同意" sourceRef="exclusivegateway5" targetRef="hrAudit">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${deptLeaderPass}]]></conditionExpression>
    </sequenceFlow>
    <sequenceFlow id="flow6" sourceRef="hrAudit" targetRef="exclusivegateway6"></sequenceFlow>
    <sequenceFlow id="flow7" name="同意" sourceRef="exclusivegateway6" targetRef="reportBack">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${hrPass}]]></conditionExpression>
    </sequenceFlow>
    <sequenceFlow id="flow8" sourceRef="reportBack" targetRef="endevent1"></sequenceFlow>
    <sequenceFlow id="flow9" name="不同意" sourceRef="exclusivegateway6" targetRef="modifyApply">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${!hrPass}]]></conditionExpression>
    </sequenceFlow>
    <sequenceFlow id="flow10" name="重新申请" sourceRef="exclusivegateway7" targetRef="deptLeaderAudit">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${reApply}]]></conditionExpression>
    </sequenceFlow>
    <sequenceFlow id="flow11" sourceRef="modifyApply" targetRef="exclusivegateway7"></sequenceFlow>
    <sequenceFlow id="flow12" name="结束流程" sourceRef="exclusivegateway7" targetRef="endevent1">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${!reApply}]]></conditionExpression>
    </sequenceFlow>
  </process>

    //根据候选组ID查询拥有任务
    List<Task> tasks = taskService.createTaskQuery().taskCandidateGroup(groupA.getId()).list();
    for (Task task : tasks){
　　　　System.out.println(task.getName());
　　}    
    //根据用户ID查询任务
    tasks = taskService.createTaskQuery().taskCandidateUser(user.getId()).list();
    for (Task task : tasks){
　　　　System.out.println(task.getName());
　　}

    //调用taskCandidateGroupIn
    List<String> groupIds = new ArrayList<String>();
    groupIds.add(groupA.getId());
    groupIds.add(groupB.getId());

    tasks = taskService.createTaskQuery().taskCandidateGroupIn(groupIds).list();
    for (Task task : tasks){
　　　　System.out.println(task.getName());
　　}
     
    //查询权限数据
    List<IdentityLink> links = taskService.getIdentityLinksForTask(tasks.get(0).getId());
    System.out.println("关系数据量: " + links.size());}