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package com.vci.server.workflow.server.event;
 
import java.util.List;
import java.util.Map;
 
import org.jbpm.api.Configuration;
import org.jbpm.api.Execution;
import org.jbpm.api.ProcessEngine;
import org.jbpm.api.TaskService;
import org.jbpm.api.model.OpenExecution;
import org.jbpm.api.task.Assignable;
import org.jbpm.api.task.AssignmentHandler;
import org.jbpm.api.task.Participation;
import org.jbpm.pvm.internal.env.EnvironmentImpl;
import org.jbpm.pvm.internal.history.HistoryEvent;
import org.jbpm.pvm.internal.history.events.TaskActivityStart;
import org.jbpm.pvm.internal.history.model.HistoryTaskImpl;
import org.jbpm.pvm.internal.model.ActivityImpl;
import org.jbpm.pvm.internal.model.ExecutionImpl;
import org.jbpm.pvm.internal.session.DbSession;
import org.jbpm.pvm.internal.task.TaskImpl;
import org.jbpm.pvm.internal.util.Clock;
 
public class AssignTask implements AssignmentHandler {
 
    private static final long serialVersionUID = 1L;
    List<String> participants;
    ProcessEngine processEngine = Configuration.getProcessEngine();
    TaskService taskService = processEngine.getTaskService();
 
    @SuppressWarnings("unchecked")
    public void assign(Assignable assignable, OpenExecution execution) throws Exception {
        String activityName = ((ExecutionImpl) execution).getActivityName();
        String pid = execution.getProcessInstance().getId();
        List taskList = taskService.createTaskQuery().processInstanceId(pid).activityName(activityName).list();
//        Task task = null ;
        DbSession dbSession = EnvironmentImpl.getFromCurrent(DbSession.class);
        TaskImpl task = null;
        for (int i = 0; i < taskList.size(); i++) {
            task = (TaskImpl) taskList.get(i);
            if (task.getActivityName().equals(activityName)) {
                break;
            }
        }
        participants = (List<String>) taskService.getVariable(task.getId(), "participants");
        ///创建子任务的时候，需要把父任务的变量都拷贝过去
        Map<String,Object> variables = task.getVariables();
        HistoryTaskImpl ht = dbSession.get(HistoryTaskImpl.class, task.getDbid());
        int i = 1;
        if (participants != null) {
            for (String participant : participants) {
//                Task subTask=((OpenTask) task).createSubTask();  
//                subTask.setName(task.getActivityName()+"-处理"+i);
//                subTask.setPriority(1);
//                subTask.setAssignee(participant); 
//                //关联主任务 
//                taskService.addTaskParticipatingUser(task.getId(), participant, Participation.CLIENT);
                TaskImpl subTask = task.createSubTask();
//                subTask.setName(task.getActivityName()+"-处理"+i);
                subTask.setName(task.getActivityName());
                subTask.setPriority(1);
                subTask.setAssignee(participant);
                subTask.setVariables(variables);
 
                ExecutionImpl exc = ((ExecutionImpl) execution).createExecution();
                ActivityImpl activity = ((ExecutionImpl) execution).getActivity();
                activity.setType("subTask");
            
                exc.setActivity(activity);
                exc.setState(Execution.STATE_ACTIVE_CONCURRENT);
                exc.setHistoryActivityStart(Clock.getCurrentTime());
                subTask.setExecution(exc);
 
                HistoryEvent.fire(new TaskActivityStart(subTask), exc);
//              ht.addSubTask(dbSession.get(HistoryTaskImpl.class, subTask.getDbid()));
 
                taskService.addTaskParticipatingUser(task.getId(), participant, Participation.CLIENT);
                i++;
            }
        }
    }
}