jBPM4.3 历史查询
1.分析几张历史表，查询某用户涉及的所有已办流程实例列表，通过对每个流程实例进行分析。一种方法是通过jBPM HistoryService历史服务进行操作（参照用户手册5.8. HistoryService历史服务），
另一种方法是自己编写HQL语句实现历史表的查询。
2.自己设计历史记录表，在需要记录的节点使用event-listener进行监听，实现记录。
这里以经典的请假为例子。请假成功，人事可以入库查询。具体流程如下图所示
http://dl.iteye.com/upload/attachment/199662/1b454420-46a2-350c-948d-f4ea04a0f279.jpg
leaveListener是一个事件监听，配置在app-service.xml中，方便leave.jpdl.xml进行调用
<bean id="leaveListener" class="com.javaeye.oa.web.listener.LeaveListener" > <property name="leaveService" ref="leaveService"/></bean><bean id="leaveService" class="com.javaeye.oa.service.task.impl.LeaveServiceImpl"></bean>
<?xml version="1.0" encoding="UTF-8"?><process name="leave" xmlns="http://jbpm.org/4.3/jpdl"> <start g="201,14,48,48" name="开始"> <transition g="-42,-10" name="请假" to="填写请假单"/> </start> <task assignee="#{applyName}" g="178,87,92,52" name="填写请假单"> <transition g="-97,2" name="判断是不是经理" to="是不是经理"/> </task> <decision expr="#{manager}" g="204,158,48,48" name="是不是经理"> <transition g="-23,-11" name="否" to="经理审核"/> <transition g="14,-11" name="是" to="老板审批"/> </decision> <task assignee="#{approvingOfficer}" g="103,252,92,52" name="经理审核"> <transition g="150,450:10,-21" name="经理批准" to="结束"><event-listener expr="#{leaveListener}"><field name="endMsg"><string value="批准请假，人事入库" /></field></event-listener></transition> <transition g="-22,-22" name="请假天数>3" to="老板审批"/> <transition g="-61,-1" name="经理不批准" to="终止"/> <transition g="149,114:-55,82" name="经理驳回" to="填写请假单"/> </task> <task assignee="#{approvingOfficer}" g="278,251,92,52" name="老板审批"> <transition g="326,450:-58,-24" name="老板批准" to="结束"><event-listener expr="#{leaveListener}"><field name="endMsg"><string value="批准请假，人事入库" /></field></event-listener></transition> <transition g="7,0" name="老板不批准" to="终止"/> <transition g="323,114:13,61" name="老板驳回" to="填写请假单"/> </task> <end g="219,429,48,48" name="结束" state="confirm"/> <end g="220,360,48,48" name="终止" state="dissent"/></process>
applyName、manager、approvingOfficer几个变量在实际操作中进行设置
endMsg测试时候使用，实际应用中可以删除
当经理批准申请或老板批准申请的时候，事件响应，进行请假申请入库。
package com.javaeye.oa.web.listener;import org.jbpm.api.listener.EventListener;import org.jbpm.api.listener.EventListenerExecution;import com.javaeye.oa.entity.task.Leave;import com.javaeye.oa.service.task.LeaveService;public class LeaveListener implements EventListener { private static final long serialVersionUID = 7098294717133900660L; private String endMsg;//endMsg测试时候使用，实际应用中可以删除 private LeaveService leaveService; public void setEndMsg(String endMsg) { this.endMsg = endMsg; } //leaveService进行set注入 public void setLeaveService(LeaveService leaveService) { this.leaveService = leaveService; } public void notify(EventListenerExecution execution) throws Exception { System.out.println("==============leaveListener:endMsg="+endMsg); String applyName = (String) execution.getVariable("applyName"); String leaveDay = (String) execution.getVariable("leaveDay"); String applyTime = (String) execution.getVariable("applyTime"); String position = (String) execution.getVariable("position"); String content = (String) execution.getVariable("content"); String approvingOfficer = (String) execution.getVariable("approvingOfficer"); Leave leave = new Leave(); leave.setApplyName(applyName); leave.setApplyTime(applyTime); leave.setApprovingOfficer(approvingOfficer); leave.setContent(content); leave.setPosition(position); leave.setLeaveDay(leaveDay); leaveService.addLeave(leave); }}
package com.javaeye.oa.entity.task;public class Leave implements java.io.Serializable { private static final long serialVersionUID = -3289821345085237147L; private Long id; private String applyName; private String leaveDay; private String position; private String applyTime; private String content; private String approvingOfficer; // Constructors /** default constructor */ public Leave() { }...
当一切就绪，我们便开始进行实际操作。
一。员工dylan点击请假链接
public String leave() { Map<String, Object> variables = new HashMap<String, Object>(); //applyName对应leave.jpdl.xml中相应变量，这里applyName为dylan variables.put("applyName", "dylan"); ExecutionService executionService = processEngine.getExecutionService(); ProcessInstance processInstance = executionService.startProcessInstanceByKey("leave",variables); if (processInstance.isActive("填写请假单")) { url = "apply"; } return url;}
二。dylan在请假页面填写请假申请单
<%@page contentType="text/html;charset=UTF-8" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>填写申请单</title></head><body><form action="apply.action" method="POST"><table width="300" border=1><tr><td><label>申请人</label></td><td><input type="text" value="dylan" name="applyName"></td></tr><tr><td><label>职位</label></td><td><input type="text" value="员工" name="position"></td></tr><tr><td><label>申请时间</label></td><td><input type="text" value="2010-01-10" name="applyTime"></td></tr><tr><td><label>请假天数</label></td><td><input type="text" value="1" name="leaveDay"></td></tr><tr><td><label>请假原因</label></td><td><textarea name="content" rows=3 cols=200>病假</textarea></td></tr><tr><td><input type="submit" value="申请"></td><td><input type="reset" value="取消"></td></tr></table></form></body></html>
三。dylan填写完成，提交请假单
public String apply() { Map<String,Object> variables = new HashMap<String,Object>();String applyName = getRequest().getParameter("applyName");String applyTime = getRequest().getParameter("applyTime");String leaveDay = getRequest().getParameter("leaveDay");String content = getRequest().getParameter("content");String position = getRequest().getParameter("position");variables.put("applyName", applyName);variables.put("applyTime", applyTime);variables.put("leaveDay", leaveDay);variables.put("content", content);variables.put("position", position);if (position.trim().equals("经理")) {variables.put("manager", "是"); variables.put("approvingOfficer", "S老板");} else {variables.put("manager", "否"); variables.put("approvingOfficer", "T经理");} TaskService taskService = processEngine.getTaskService(); //dylan即请假启动的时候applyName的值taskList = taskService.findPersonalTasks("dylan");task = taskList.get(0);taskService.setVariables(task.getId(), variables);taskService.completeTask(task.getId()); return SUCCESS;}
四。请假1天，职位为员工，直接经理进行审批，审批通过，即入库
public String confirm() { Map<String, Object> variables = new HashMap<String, Object>(); TaskService taskService = processEngine.getTaskService(); ExecutionService executionService = processEngine .getExecutionService(); task = taskService.getTask(taskId); execution = executionService.findExecutionById(task.getExecutionId()); if (execution.getProcessInstance().isActive("老板审批")) { //approvingOfficer如果已存在值，则把之前值覆盖 variables.put("approvingOfficer", "S老板"); taskService.completeTask(taskId, "老板批准");} else if (execution.getProcessInstance().isActive("经理审核")) {String variable = (String) taskService.getVariable(taskId, "leaveDay"); if (Integer.valueOf(variable) > 3) { taskService.completeTask(taskId, "请假天数>3"); } else {taskService.completeTask(taskId, "经理批准"); }} return SUCCESS;}
入库之后，人事即可对请假情况进行查看考核=。=
本文在family168的请假例子上进行简单修改，基于SSH+jBPM4.3，实现自定义历史表查询。
关于历史事件中，variable的具体情况可参考
http://www.family168.com/jbpm4/history.html
http://phoenix-clt.iteye.com/blog/426714
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