Jbpm 一个简单的会签实例

最新推荐文章于 2011-11-09 19:43:41 发布

WiseDragon

最新推荐文章于 2011-11-09 19:43:41 发布

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本文介绍了一个基于JBPM的工作流实例，详细展示了会签流程的定义与实现过程，包括项目提交、审批、会签及最终决策等关键步骤。

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一个简单的会签实例

作者:tomkoo

以下例子中采用了jbpm console 的几个实例用户

项目提交人 : ernie .

主管审批 : bert

会签 : ernie , bert , grover

老板审批 : grover

正常流程: 项目金额 >= 500W RMB

提交项目 --> 主管审批 --> 会签 --> 老板审批 --> 审批通过(结束)

正常流程: 项目金额 < 500W RMB

提交项目 --> 主管审批 --> 会签 --> 审批通过(结束)

其中主管审批, 会签, 老板审批 , 不通过, 全部退回给项目提交人修改.

会签中: 所有人全通过, 则通过. 任何一人不通过, 停止其他会签任务.退回给提交人.

流程定义如下:

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

< process-definition xmlns ="urn:jbpm.org:jpdl-3.1"

name ="tc_prj_approval" >

< swimlane name ="initiator" />

<! 项目提交人 >

< swimlane name ="requester" >

< assignment expression ="user(ernie)" />

</ swimlane >

<! 主管 >

< swimlane name ="chief" >

< assignment expression ="user(bert)" />

</ swimlane >

<! 老板 >

< swimlane name ="boss" >

< assignment expression ="user(grover)" />

</ swimlane >

<! 会签人 >

< swimlane name ="cosinger" >

< assignment class ="net.chenj.jbpm.sample.CosingerAssiHandler" >

</ assignment >

</ swimlane >

< start-state name ="start" >

< task name ="tc_prj_newprj" swimlane ="initiator" ></ task >

< transition name ="to_submit" to ="tc_prj_submit" ></ transition >

</ start-state >

< task-node name ="tc_prj_submit" >

< task name ="tc_prj_submit" ></ task >

< transition name ="to_chiefapprove" to ="tc_prj_chiefapprove" ></ transition >

</ task-node >

< task-node name ="tc_prj_chiefapprove" >

< task name ="tc_prj_chiefapprove" ></ task >

< transition name ="approve" to ="tc_prj_countersign" ></ transition >

< transition name ="disapprove" to ="tc_prj_submit" ></ transition >

</ task-node >

< task-node name ="tc_prj_countersign" signal ="last-wait"

create-tasks ="false" >

< task name ="tc_prj_countersign" >

< event type ="task-end" >

< action

class ="net.chenj.jbpm.sample.TaskEndCountersign" >

</ action >

</ event >

</ task >

< event type ="node-enter" >

< action name ="createInstance"

class ="net.chenj.jbpm.sample.CreateTaskInstanceCountersign" >

</ action >

</ event >

< transition name ="approve" to ="amount_decision" ></ transition >

< transition name ="disapprove" to ="tc_prj_submit" ></ transition >

</ task-node >

< decision name ="amount_decision" >

< transition name ="to_bossapprove" to ="tc_prj_bossapprove" ></ transition >

< transition name ="to_end" to ="end1" ></ transition >

</ decision >

< task-node name ="tc_prj_bossapprove" >

< task name ="tc_prj_bossapprove" ></ task >

< transition name ="approve" to ="end1" ></ transition >

< transition name ="disapprove" to ="tc_prj_submit" >

< condition > #{amount >= 500} </ condition >

</ transition >

</ task-node >

< end-state name ="end1" ></ end-state >

</ process-definition >

// 会签swimlane class

package net.chenj.jbpm.sample;

import org.jbpm.graph.exe. * ;

import org.jbpm.taskmgmt.def. * ;

import org.jbpm.taskmgmt.exe.Assignable;

public class CosingerAssiHandler implements AssignmentHandler {

private static final long serialVersionUID = 1L;

public void assign(Assignable assignable, ExecutionContext executionContext) {

// 从数据库或者ldap 读取会签人设置

String[] a = { "ernie", "bert", "grover" };

assignable.setPooledActors(a);

}

创建会签任务实现类

package net.chenj.jbpm.sample;

import org.jbpm.graph.def.ActionHandler;

import org.jbpm.graph.exe.ExecutionContext;

import org.jbpm.graph.exe.Token;

import org.jbpm.graph.node.TaskNode;

import org.jbpm.taskmgmt.def.Task;

import org.jbpm.taskmgmt.exe.TaskMgmtInstance;

public class CreateTaskInstanceCountersign implements ActionHandler {

private static final long serialVersionUID = 1L;

public void execute(ExecutionContext executionContext) throws Exception {

Token token = executionContext.getToken();

TaskMgmtInstance tmi = executionContext.getTaskMgmtInstance();

TaskNode taskNode = (TaskNode) executionContext.getNode();

Task task = taskNode.getTask("tc_prj_countersign");

// 从数据库或者ldap 读取会签人设置创建任务实例

tmi.createTaskInstance(task, token).setActorId("ernie");

tmi.createTaskInstance(task, token).setActorId("bert");

tmi.createTaskInstance(task, token).setActorId("grover");

}

结束不通过时结束其他会签任务实现

package net.chenj.jbpm.sample;

import java.util.Collection;

import java.util.Iterator;

import org.jbpm.graph.def.ActionHandler;

import org.jbpm.graph.exe.ExecutionContext;

import org.jbpm.taskmgmt.exe.TaskInstance;

import org.jbpm.taskmgmt.exe.TaskMgmtInstance;

public class TaskEndCountersign implements ActionHandler {

private static final long serialVersionUID = 1L;

public void execute(ExecutionContext executionContext) throws Exception {

boolean isDisapprove = Boolean.valueOf((String) executionContext

.getVariable("isDisapprove"));

// 如果有一个任务实例拒绝通过则结束除当前任务实例外其他任务实例

if (isDisapprove) {

TaskMgmtInstance tmi = executionContext.getTaskMgmtInstance();

TaskInstance ti = executionContext.getTaskInstance();

final String actorId = ti.getActorId();

Collection c = tmi.getSignallingTasks(executionContext);

for (Iterator it = c.iterator(); it.hasNext();) {

TaskInstance task = (TaskInstance) it.next();

if (!(actorId.equals(task.getActorId())) && (!task.hasEnded())) {

task.end("disapprove");

}