//得到流程定義
List<ProcessDefinition> pdL = repositoryService.createProcessDefinitionQuery().list();
//流程實例
List<ProcessInstance> piL = executionService.createProcessInstanceQuery().list();
//當前用戶的任務列表
List<Task> tL = taskService.findGroupTasks(username);
List<Task> tLByPerson = taskService.findPersonalTasks(username);
1、執行流程
根據類ProcessInstance的屬性ID,執行流程
String pid = processInstance.getId();
executionService.signalExecutionById(pid);
//獲取指定節點的Execution
Execution exec = processInstance.findActiveExecutionIn("state1");
executionService.signalExecutionById(exec.getId(), "to end1");
1、獲取activityNames
Set<String> activityNames = processInstance.findActiveActivityNames();
if (activityNames == null) {
System.out.println("current activityNames is null" );
}
else {
for (String name: activityNames) {
System.out.println("activity name is "+name);
}
}
1、設置添加變量
executionService.setVariable(pid, "content","task2");
Map<String, Object> variables = new HashMap<String, Object>();
variables.put("result", "ok");
taskService.setVariables(task.getId(), variables);
1、獲取變量
Set<String> variableNames = taskService.getVariableNames(taskDbid);
Map<String, Object> variables = taskService.getVariables(taskDbid, variableNames);
2、查找所有任務
List<Task> ts = jbpmTemplate.getTaskService().createTaskQuery().list();
for(Task t : ts){
if(t.getName().equals("task1")){
jbpmTemplate.completeTask(t.getId());//通過任務id讓任務向下流轉
Map map = HashMap();
map.put("day",day);
jbpmTemplate.getTaskService().completeTask(t.getId(),map);//可以傳參數
}
3、通過任務ID取指定變量的值
String leaveId = (String) jbpmTemplate.getVariableByTaskId(taskId, "leaveId");
String leaveId = (String) taskService.getVariable(taskId, "leaveId");
//通過流程實例id取指定變量的值
String pid = processInstance.getId();
String answer = (String) executionService.getVariable(pid, "answer");
4、判斷流程是否執行在某個節點
processInstance.isActive("submit document");
5、任務轉交
1.設置candidate-groups="lingo"
2.lingo可以通過findGroupsTasks()看到共享任務
3.使用assignTask(taskid, "admin")將這個任務轉交給admin
4.admin通過findPersonalTasks()看到待辦任務
5.admin通過completeTask()完成任務。
如果按照上面的步驟,jbpm-4.3下測試是通過的,下面是測試代碼:
ProcessInstance processInstance = executionService
.startProcessInstanceByKey("X0603CandidateGroupTest");
List<Task> taskList = taskService.findGroupTasks("lingo");
assertEquals(1, taskList.size());
Task task = taskList.get(0);
taskService.assignTask(task.getId(), "admin");
taskList = taskService.findPersonalTasks("admin");
assertEquals(1, taskList.size());
taskService.completeTask(task.getId());
6、多條件判斷
expr="#{a == 1 && b == 1}"
7、獲取一個流程中的個人任務
List<Task> taskList = taskService.findPersonalTasks("johndoe");
Task task = taskList.get(0);
大家要慎用以上方法
強烈推薦以下2個方法,以免造成許多不必要的錯誤。
- //根據節點名取一流程實例下的任務
- Task task1 = taskService.createTaskQuery().processInstanceId(processInstance.getId()).activityName("經理簽收").uniqueResult();
- //根據任務分配者userId取一流程實例下的任務
- Task task2 = taskService.createTaskQuery().processInstanceId(processInstance.getId()).assignee(userId).uniqueResult();
- 查看源碼可得知processInstance.getId()爲ExecutionID
8、獲得當前節點與獲得一個節點的後繼節點
獲得一個節點的後繼節點很簡單,只要getActivity()獲得當前節點,然後getOutgoingTransitions()獲得所有轉出的連線,然後遍歷連線獲得destination就可以了。
節點類型可以通過activity的getType()方法獲得。
9、怎麼得到上一節點
最簡單的,先獲得executionImpl,executionImpl.getActivity()獲得當前活動,然後根據activityImpl.getIncomingTransitions()獲得所有前面的連線,得到transitionImpl。然後根據transitionImpl.getSource()獲得連線的開始節點,這樣就獲得了前面的activity。
請注意,請注意,流程中的回退是千變萬化的,一定要小心注意。很難寫出通用的代碼來。
-
- public void execute(ActivityExecution activityExecution) throws Exception {
- ExecutionImpl executionimpl = (ExecutionImpl) activityExecution;
- DbSession dbsession = EnvironmentImpl.getFromCurrent(DbSession.class);
- TaskImpl taskimpl = dbsession.createTask();
10、獲取流程定義的xml文件
在頁面上顯示流程定義的xml內容
ProcessEngine processEngine = Configuration.getProcessEngine();
RepositoryService repositoryService = processEngine.getRepositoryService();String pdId = request.getParameter("pdId");
ProcessDefinition pd = repositoryService.createProcessDefinitionQuery().processDefinitionId(pdId).uniqueResult();Set<String> names = repositoryService.getResourceNames(pd.getDeploymentId());
for (String n :names) {
if (n.indexOf(".jpdl.xml") != -1) {
InputStream in = repositoryService.getResourceAsStream(pd.getDeploymentId(), n);
byte[] buffer = new byte[1024*4];
int length;
while ((length = in.read(buffer)) != -1) {
response.getOutputStream().write(buffer, 0, length);
}
response.getOutputStream().close();
}
}11、獲取流程定義的名字
如果需要流程定義的名字,需要通過repositoryService.createProcessDefinitionQuery().deploymentId(deploymentId).list()的方式先查詢得到ProcessDefinition,,再調用對應的getName()方法獲得流程定義名稱。
12、請問在實現了AssignmentHandler的處理類中,如何得知是哪個節點調用的它?
((ExecutionImpl) openExecution).getActivity()
13、JBPM4中如何獲取fork名字?
如果只爲了獲得定義中所有fork名稱,可以直接遍歷ProcessDeifnitionImpl中的activities,查找getType()爲"fork"的活動。
14、
public void assign(Assignable assignable, OpenExecution execution) {
TaskImpl taskImpl = (TaskImpl)assignable;
ExecutionImpl executionImpl = (ExecutionImpl)execution;
}