BPMN配置文件详解

野性酷女 2024-03-26 03:59 71阅读 0赞

bpmn文件是activiti配置流程定义的文件,一般一个bpmn文件定义一个流程,文件为xml格式,各种元素级别如下:

<?xml version="1.0" encoding="UTF-8"?>
 <definitions>
 <process>
 <startEvent></startEvent>
 <endEvent></endEvent>
 <userTask>
 <extensionElements>
 　　　　　　<activiti:taskListener></activiti:taskListener>
 　　　　</extensionElements>
 </userTask>
 <scriptTask/>
 <manualTask/>
 <receiveTask/>
 <serviceTask/>
 <businessRuleTask/>
 <exclusiveGateway/>
 <parallelGateway/>
 <sequenceFlow>
 <conditionExpression></conditionExpression>
 </sequenceFlow>
 <subProcess></subProcess>
 <boundaryEvent/></boundaryEvent>
 </process>
 <bpmndi:BPMNDiagram>
 <bpmndi:BPMNPlane>
 <bpmndi:BPMNShape>
 <omgdc:Bounds></omgdc:Bounds>
 </bpmndi:BPMNShape>
 <bpmndi:BPMNShape>
 <omgdc:Bounds></omgdc:Bounds>
 </bpmndi:BPMNShape>
 <bpmndi:BPMNShape>
 <omgdc:Bounds></omgdc:Bounds>
 </bpmndi:BPMNShape>
 <bpmndi:BPMNShape>
 <omgdc:Bounds></omgdc:Bounds>
 </bpmndi:BPMNShape>
 <bpmndi:BPMNEdge>
 <omgdi:waypoint></omgdi:waypoint>
 <omgdi:waypoint></omgdi:waypoint>
 </bpmndi:BPMNEdge>
 </bpmndi:BPMNPlane>
 </bpmndi:BPMNDiagram>
 </definitions>

process: 流程定义根元素,代表了一个流程定义的开始,属性如下

<table style=""> 
 <tbody> 
 <tr> 
 <td style="width:257px;vertical-align:middle;height:52px;">属性名</td> 
 <td style="width:482px;vertical-align:middle;height:52px;">含义</td> 
 </tr> 
 <tr> 
 <td style="width:257px;vertical-align:middle;height:52px;">id</td> 
 <td style="width:482px;vertical-align:middle;height:52px;">流程唯一id,启动流程时需要</td> 
 </tr> 
 <tr> 
 <td style="width:257px;vertical-align:middle;height:52px;">isExecutable</td> 
 <td style="width:482px;vertical-align:middle;height:52px;">流程是否可执行</td> 
 </tr> 
 <tr> 
 <td style="width:257px;vertical-align:middle;height:52px;">name</td> 
 <td style="width:482px;vertical-align:middle;height:52px;">流程名称</td> 
 </tr> 
 <tr> 
 <td style="width:257px;vertical-align:middle;height:52px;">type</td> 
 <td style="width:482px;vertical-align:middle;height:52px;">流程类型</td> 
 </tr> 
 <tr> 
 <td style="width:257px;vertical-align:middle;height:52px;">isClosed</td> 
 <td style="width:482px;vertical-align:middle;height:52px;">流程是否已关闭,关闭不能执行</td> 
 </tr> 
 </tbody> 
</table>

startEvent: 流程启动事件,一个process只能有一个,且必须为流程起始元素

<table style=""> 
 <tbody> 
 <tr> 
 <td style="width:253px;vertical-align:top;height:52px;">属性名</td> 
 <td style="width:485px;vertical-align:top;height:52px;">含义</td> 
 </tr> 
 <tr> 
 <td style="width:253px;vertical-align:top;height:52px;">id</td> 
 <td style="width:485px;vertical-align:top;height:52px;">启动节点id</td> 
 </tr> 
 <tr> 
 <td style="width:253px;vertical-align:top;height:52px;">name</td> 
 <td style="width:485px;vertical-align:top;height:52px;">启动节点名称</td> 
 </tr> 
 </tbody> 
</table>

endEvent: 流程结束事件,一个process只能有一个,且必须为流程结束元素

<table style=""> 
 <tbody> 
 <tr> 
 <td style="width:254px;vertical-align:top;height:52px;">属性名</td> 
 <td style="width:482px;vertical-align:top;height:52px;">含义</td> 
 </tr> 
 <tr> 
 <td style="width:254px;vertical-align:top;height:52px;">id</td> 
 <td style="width:482px;vertical-align:top;height:52px;">结束节点id</td> 
 </tr> 
 <tr> 
 <td style="width:254px;vertical-align:top;height:52px;">name</td> 
 <td style="width:482px;vertical-align:top;height:52px;">节点名称</td> 
 </tr> 
 </tbody> 
</table>

userTask: 流程中间用户任务,夹在startEvent与endEvent之间的节点

<table style=""> 
 <tbody> 
 <tr> 
 <td style="width:255px;vertical-align:top;height:52px;">属性名</td> 
 <td style="width:481px;vertical-align:top;height:52px;">含义</td> 
 </tr> 
 <tr> 
 <td style="width:255px;vertical-align:top;height:52px;">id</td> 
 <td style="width:481px;vertical-align:top;height:52px;">任务id,使用id操作任务</td> 
 </tr> 
 <tr> 
 <td style="width:255px;vertical-align:top;height:52px;">name</td> 
 <td style="width:481px;vertical-align:top;height:52px;">任务名称</td> 
 </tr> 
 <tr> 
 <td style="width:255px;vertical-align:top;height:52px;">activiti:assignee</td> 
 <td style="width:481px;vertical-align:top;height:52px;">任务所属用户,只能指定用户完成这个任务,即任务办理人</td> 
 </tr> 
 <tr> 
 <td style="width:255px;vertical-align:top;height:52px;">activiti:candidateUsers</td> 
 <td style="width:481px;vertical-align:top;height:52px;">多个任务办理人</td> 
 </tr> 
 <tr> 
 <td style="width:255px;vertical-align:top;height:52px;">activiti:candidateGroups</td> 
 <td style="width:481px;vertical-align:top;height:52px;">任务处理人候选组,处理人必须在这个组内</td> 
 </tr> 
 <tr> 
 <td style="width:255px;vertical-align:top;height:52px;">activiti:exclusive</td> 
 <td style="width:481px;vertical-align:top;height:52px;">独家的,好像是在排它性网关中使用,意思应该是在有并行分支情况下,只会走其中一条</td> 
 </tr> 
 <tr> 
 <td style="width:255px;vertical-align:top;height:52px;">activiti:dueDate</td> 
 <td style="width:481px;vertical-align:top;height:52px;">设置用户任务到期日期</td> 
 </tr> 
 <tr> 
 <td style="width:255px;vertical-align:top;height:52px;">activiti:priority</td> 
 <td style="width:481px;vertical-align:top;height:52px;">用户任务优先级,0-100</td> 
 </tr> 
 </tbody> 
</table>

extensionElements: userTask的子元素,用于扩展元素

activiti:taskListener: 扩展元素之一,用于监听某个任务的运行

<table style=""> 
 <tbody> 
 <tr> 
 <td style="width:249px;vertical-align:top;height:52px;">属性名</td> 
 <td style="width:490px;vertical-align:top;height:52px;">含义</td> 
 </tr> 
 <tr> 
 <td style="width:249px;vertical-align:top;height:52px;">event</td> 
 <td style="width:490px;vertical-align:top;height:52px;">监听的任务事件名,create、assignment（分配任务）、complete</td> 
 </tr> 
 <tr> 
 <td style="width:249px;vertical-align:top;height:52px;">class</td> 
 <td style="width:490px;vertical-align:top;height:52px;">任务监听器类,需要实现TaskListener</td> 
 </tr> 
 </tbody> 
</table>

sequenceFlow: 顺序流分为两种：标准顺序流 条件顺序流,其实就是连接两个节点的一条线

<table style=""> 
 <tbody> 
 <tr> 
 <td style="width:246px;vertical-align:top;height:52px;">属性名</td> 
 <td style="width:493px;vertical-align:top;height:52px;">含义</td> 
 </tr> 
 <tr> 
 <td style="width:246px;vertical-align:top;height:52px;">id</td> 
 <td style="width:493px;vertical-align:top;height:52px;">顺序流id</td> 
 </tr> 
 <tr> 
 <td style="width:246px;vertical-align:top;height:52px;">sourceRef</td> 
 <td style="width:493px;vertical-align:top;height:52px;">连线的起始节点id,即接近startEvent的节点</td> 
 </tr> 
 <tr> 
 <td style="width:246px;vertical-align:top;height:52px;">targetRef</td> 
 <td style="width:493px;vertical-align:top;height:52px;">连线结束节点id,即接近endEvent的节点</td> 
 </tr> 
 </tbody> 
</table>

conditionExpression: sequenceFlow子元素,根据表达式确定是否执行这一顺序流,一条顺序流只能联系两个节点

如果需要表达式判断,有多条顺序流连接了同一开始节点,一般这样的开始节点都是网关

<table style=""> 
 <tbody> 
 <tr> 
 <td style="width:244px;vertical-align:top;height:52px;">属性名</td> 
 <td style="width:495px;vertical-align:top;height:52px;">含义</td> 
 </tr> 
 <tr> 
 <td style="width:244px;vertical-align:top;height:52px;">xsi:type</td> 
 <td style="width:495px;vertical-align:top;height:52px;">含义不知道,值为tFormalExpression</td> 
 </tr> 
 <tr> 
 <td style="width:244px;vertical-align:top;height:52px;">子元素</td> 
 <td style="width:495px;vertical-align:top;height:52px;">表达式,${days &lt;= 3}</td> 
 </tr> 
 </tbody> 
</table>

exclusiveGateway: 排它性网关,即多个sequenceFlow以网关节点开始时,只根据条件执行其中一条流,其他流不再判断

虽然与userTask同属于节点,但是其不作为任务执行

<table style=""> 
 <tbody> 
 <tr> 
 <td style="width:239px;vertical-align:top;height:52px;">属性名</td> 
 <td style="width:500px;vertical-align:top;height:52px;">含义</td> 
 </tr> 
 <tr> 
 <td style="width:239px;vertical-align:top;height:52px;">id</td> 
 <td style="width:500px;vertical-align:top;height:52px;">节点id</td> 
 </tr> 
 <tr> 
 <td style="width:239px;vertical-align:top;height:52px;">name</td> 
 <td style="width:500px;vertical-align:top;height:52px;">节点名称</td> 
 </tr> 
 <tr> 
 <td style="width:239px;vertical-align:top;height:52px;">gatewayDirection</td> 
 <td style="width:500px;vertical-align:top;height:52px;">网关方向,Unspecified</td> 
 </tr> 
 </tbody> 
</table>