一、概要
1，设计TASK的表主要是：ACT_RU_TASK，ACT_HI_TASKINST（见参考-activiti表）；
2，任务主要有：人工任务（usertask）,服务任务（servicetask）等；
3，候选人/候选组（candidate）：可以执行任务的一类人或者多个组，候选人/候选组中都可以去签收任务，一旦某人签收，就成为受理人，其他人就不能再签收受理此任务；usertask流程图中，candidate标示候选；候选人涉及的表ACT_RU_IDENTITYLINK;
4，受理人（assignee）：有两种情况，一种是候选人/组中有人签收任务后成为受理人，另外一种是流程图中直接指定受理人，但是可以指定一个动态受理人；受理人涉及的表ACT_RU_TASK;
5，持有人（owner）：持有人设置主要是存入历史表中，用于历史任务的查询，涉及的表ACT_HI_TASKINST；
二、任务操作
1，创建TASK任务与设置权限：可以使用代码创建任务，但是实际操作中都是绘制流程图。绘制TASK后，在属性可以设置候选人和受理人，一般都是设置候选人，因为固定受理人不太符合程序变动；
候选人设置了deptleader，该值将部署在表ACT_RU_IDENTITYLINK中，查看xml看见：
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//设置了候选组
<
userTask
id
=
"deptLeaderAudit"
name
=
"部门领导审批"
activiti:candidateGroups
=
"deptLeader"
>
</
userTask
>
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完整的XML（无图形位置信息）
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<
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
>
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2，查询候选任务
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//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());}
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本文转自二郎三郎博客园博客，原文链接：http://www.cnblogs.com/haore147/p/5213430.html，如需转载请自行联系原作者
