/**
* Copyright 2007-2010 非也
* All rights reserved.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation。
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see http://www.gnu.org/licenses. *
*/
package org.fireflow.pdl.fpdl.behavior;
import java.util.List;
import org.fireflow.client.WorkflowQuery;
import org.fireflow.client.WorkflowSession;
import org.fireflow.client.impl.WorkflowSessionLocalImpl;
import org.fireflow.engine.context.RuntimeContext;
import org.fireflow.engine.entity.runtime.ActivityInstance;
import org.fireflow.engine.entity.runtime.ActivityInstanceState;
import org.fireflow.engine.entity.runtime.ProcessInstance;
import org.fireflow.engine.entity.runtime.ScheduleJob;
import org.fireflow.engine.entity.runtime.ScheduleJobState;
import org.fireflow.engine.entity.runtime.impl.ActivityInstanceImpl;
import org.fireflow.engine.entity.runtime.impl.ScheduleJobImpl;
import org.fireflow.engine.modules.calendar.CalendarService;
import org.fireflow.engine.modules.instancemanager.ActivityInstanceManager;
import org.fireflow.engine.modules.persistence.ActivityInstancePersister;
import org.fireflow.engine.modules.persistence.PersistenceService;
import org.fireflow.engine.modules.persistence.ProcessInstancePersister;
import org.fireflow.engine.modules.persistence.ScheduleJobPersister;
import org.fireflow.engine.modules.persistence.TokenPersister;
import org.fireflow.engine.modules.schedule.Scheduler;
import org.fireflow.pdl.fpdl.misc.FpdlConstants;
import org.fireflow.pdl.fpdl.process.Synchronizer;
import org.fireflow.pvm.kernel.PObjectKey;
import org.fireflow.pvm.kernel.Token;
import org.fireflow.pvm.kernel.TokenState;
import org.fireflow.pvm.pdllogic.BusinessStatus;
import org.fireflow.pvm.pdllogic.ContinueDirection;
import org.fireflow.pvm.pdllogic.ExecuteResult;
/**
* @author 非也
* @version 2.0
*/
public abstract class AbsSynchronizerBehavior extends AbsNodeBehavior{
//（2012-02-05，Cancel动作容易和handleTermination混淆，意义也不是特别大，暂且注销）
// protected CancellationHandler cancellationHandler = new SynchronizerCancellationHandler();
/* (non-Javadoc)
* @see org.fireflow.pvm.pdllogic.WorkflowBehavior#execute(org.fireflow.engine.WorkflowSession, org.fireflow.pvm.kernel.Token, java.lang.Object)
*/
public ExecuteResult execute(WorkflowSession session, Token token,
Object workflowElement) {
ExecuteResult result = new ExecuteResult();
result.setStatus(BusinessStatus.COMPLETED);
return result;
}
/**
* 如果返回一个正整数，表示可以继续执行，且该正整数为stepnumber；-1表示尚未准备好
* @param session
* @param token
* @param siblings
* @param synchronizer
* @return
*/
public abstract int canBeFired(WorkflowSession session, Token token,List<Token> siblings,
Synchronizer synchronizer);
/* (non-Javadoc)
* @see org.fireflow.pvm.pdllogic.WorkflowBehavior#prepare(org.fireflow.engine.WorkflowSession, org.fireflow.pvm.kernel.Token, java.lang.Object)
*/
public Boolean prepare(WorkflowSession session, Token token,
Object workflowElement) {
WorkflowSessionLocalImpl sessionLocalImpl = (WorkflowSessionLocalImpl)session;
Synchronizer node = (Synchronizer)workflowElement;
RuntimeContext ctx = ((WorkflowSessionLocalImpl) session)
.getRuntimeContext();
PersistenceService persistenceStrategy = ctx.getEngineModule(
PersistenceService.class, FpdlConstants.PROCESS_TYPE_FPDL20);
TokenPersister tokenPersister = persistenceStrategy.getTokenPersister();
//0、校验processInstance与token的一致性
ProcessInstance processInstance = sessionLocalImpl.getCurrentProcessInstance();
if (processInstance==null || !processInstance.getId().equals(token.getProcessInstanceId())){
WorkflowQuery<ProcessInstance> q4ProcInst = sessionLocalImpl.createWorkflowQuery(ProcessInstance.class);
processInstance = q4ProcInst.get(token.getProcessInstanceId());
sessionLocalImpl.setCurrentProcessInstance(processInstance);
}
boolean multiEnteringTransitions = false;// 表示是否有多条输入边
if (node.getEnteringTransitions() != null
&& node.getEnteringTransitions().size() > 1) {
multiEnteringTransitions = true;
}
List<Token> siblings = null;
if (multiEnteringTransitions ) {
siblings = tokenPersister.findSiblings(token);
}
//1、缺省采用AndJoinEvaluator判断
int canBeFired = this.canBeFired(session, token,siblings, node);
// 2、如果汇聚完成，则创建对应的ActivityInstance
if (canBeFired>0) {
int stepNumber = canBeFired;
ActivityInstanceManager activityInstanceMgr = ctx.getEngineModule(
ActivityInstanceManager.class, FpdlConstants.PROCESS_TYPE_FPDL20);
ActivityInstancePersister actInstPersistSvc = persistenceStrategy
.getActivityInstancePersister();
// 1、创建并保存活动实例
ActivityInstanceImpl activityInstance = (ActivityInstanceImpl) activityInstanceMgr
.createActivityInstance(session, processInstance,
node);
activityInstance.setStepNumber(stepNumber);
activityInstance.setTokenId(token.getId());
actInstPersistSvc.saveOrUpdate(activityInstance);
// 2、设置session和token
((WorkflowSessionLocalImpl) session)
.setCurrentActivityInstance(activityInstance);
// 3.更新所有token的elementInstanceId
if (siblings==null){
token.setElementInstanceId(activityInstance.getId());
tokenPersister.saveOrUpdate(token);
}else{
for(Token sibling : siblings){
sibling.setElementInstanceId(activityInstance.getId());
tokenPersister.saveOrUpdate(sibling);
}
}
return true;
}else{
return false;
}
}
/* (non-Javadoc)
* @see org.fireflow.pvm.pdllogic.WorkflowBehavior#continueOn(org.fireflow.engine.WorkflowSession, org.fireflow.pvm.kernel.Token, java.lang.Object)
*/
public ContinueDirection continueOn(WorkflowSession session, Token token,
Object workflowElement) {
WorkflowSessionLocalImpl sessionLocalImpl = (WorkflowSessionLocalImpl)session;
//检验currentActivityInstance和currentProcessInstance的一致性
ProcessInstance oldProcInst = sessionLocalImpl.getCurrentProcessInstance();
ActivityInstance oldActInst = sessionLocalImpl.getCurrentActivityInstance();
RuntimeContext ctx = ((WorkflowSessionLocalImpl)session).getRuntimeContext();
PersistenceService persistenceStrategy = ctx.getEngineModule(PersistenceService.class, FpdlConstants.PROCESS_TYPE_FPDL20);
ActivityInstancePersister actInstPersistenceService = persistenceStrategy.getActivityInstancePersister();
ProcessInstancePersister processInstancePersister = persistenceStrategy.getProcessInstancePersister();
if (oldProcInst==null || !oldProcInst.getId().equals(token.getProcessInstanceId())){
ProcessInstance procInst = processInstancePersister.fetch(ProcessInstance.class, token.getProcessInstanceId());
((WorkflowSessionLocalImpl)session).setCurrentProcessInstance(procInst);
}
if (oldActInst==null || !oldActInst.getId().equals(token.getElementInstanceId())){
ActivityInstance actInst = actInstPersistenceService.fetch(ActivityInstance.class, token.getElementInstanceId());
((WorkflowSessionLocalImpl)session).setCurrentActivityInstance(actInst);
}
if (token.getState().getValue()<TokenState.DELIMITER.getValue() &&
token.getState().getValue()!=TokenState.RUNNING.getValue()){
return ContinueDirection.closeMe();
}
List<PObjectKey> nextPObjectKeys = determineNextPObjectKeys(session,token,workflowElement);
ContinueDirection direction = ContinueDirection.closeMe();
if (nextPObjectKeys.size()>0){
direction.setNextProcessObjectKeys(nextPObjectKeys);
}
((WorkflowSessionLocalImpl)session).setCurrentProcessInstance(oldProcInst);
((WorkflowSessionLocalImpl)session).setCurrentActivityInstance(oldActInst);
return direction;
}
//（2012-02-05，Cancel动作容易和handleTermination混淆，意义也不是特别大，暂且注销）
// public CancellationHandler getCancellationHandler(){
// return this.cancellationHandler;
// }
/* (non-Javadoc)
* @see org.fireflow.pvm.pdllogic.WorkflowBehavior#onTokenStateChanged(org.fireflow.engine.WorkflowSession, org.fireflow.pvm.kernel.Token, java.lang.Object)
*/
public void onTokenStateChanged(WorkflowSession session, Token token,
Object workflowElement) {
WorkflowSessionLocalImpl sessionLocalImpl = (WorkflowSessionLocalImpl)session;
RuntimeContext ctx = ((WorkflowSessionLocalImpl)session).getRuntimeContext();
PersistenceService persistenceStrategy = ctx.getEngineModule(PersistenceService.class, FpdlConstants.PROCESS_TYPE_FPDL20);
ActivityInstancePersister actInstPersistenceService = persistenceStrategy.getActivityInstancePersister();
CalendarService calendarService = ctx.getEngineModule(CalendarService.class, FpdlConstants.PROCESS_TYPE_FPDL20);
ActivityInstance oldActInst = sessionLocalImpl.getCurrentActivityInstance();
ActivityInstance activityInstance = oldActInst;
if (oldActInst==null || !oldActInst.getId().equals(token.getElementInstanceId())){
activityInstance = actInstPersistenceService.fetch(ActivityInstance.class, token.getElementInstanceId());
((WorkflowSessionLocalImpl)session).setCurrentActivityInstance(activityInstance);
}
try{
if (activityInstance!=null){//synchronizer有可能没有产生相应的activity instance
ActivityInstanceManager activityInstanceMgr = ctx.getEngineModule(ActivityInstanceManager.class, token.getProcessType());
ActivityInstanceState state = ActivityInstanceState.valueOf(token.getState().name());
if (state.getValue()>ActivityInstanceState.DELIMITER.getValue()){
//将调度器中的timmer删除 ，同时将ScheduleJob的状态修改为非活动状态。
ScheduleJobPersister scheduleJobPersister = persistenceStrategy.getScheduleJobPersister();
List<ScheduleJob> scheduleJobs = scheduleJobPersister.findScheduleJob4ActivityInstance(activityInstance.getId());
if (scheduleJobs!=null && scheduleJobs.size()>0){
for (ScheduleJob job : scheduleJobs){
if (job.getState().getValue()<ScheduleJobState.DELIMITER.getValue()){
Scheduler scheduler = ctx.getEngineModule(Scheduler.class, activityInstance.getProcessType());
scheduler.unSchedule(job, ctx);
ScheduleJobState scheduleJobState = ScheduleJobState.COMPLETED;
try{
scheduleJobState = ScheduleJobState.valueOf(state.getValue());
}catch(Exception e){
scheduleJobState = ScheduleJobState.ABORTED;
}
((ScheduleJobImpl)job).setState(scheduleJobState);
scheduleJobPersister.saveOrUpdate(job);
}
}
}
}
//修改ActivityInstance的状态，在此处调用ActivityInstanceManager.changeActivityInstanceState(...)完成
activityInstanceMgr.changeActivityInstanceState(session, activityInstance, state, workflowElement);
}
}finally{
sessionLocalImpl.setCurrentActivityInstance(oldActInst);
}
}
/*
//2012-02-05 abort方法没有意义
public void abort(WorkflowSession session,Token token,Object workflowElement){
//1、检验currentActivityInstance和currentProcessInstance的一致性
ProcessInstance oldProcInst = session.getCurrentProcessInstance();
ActivityInstance oldActInst = session.getCurrentActivityInstance();
RuntimeContext ctx = ((WorkflowSessionLocalImpl)session).getRuntimeContext();
PersistenceService persistenceService = ctx.getEngineModule(PersistenceService.class, FpdlConstants.PROCESS_TYPE_FPDL20);
ActivityInstancePersister actInstPersistenceService = persistenceService.getActivityInstancePersister();
ProcessInstancePersister processInstancePersister = persistenceService.getProcessInstancePersister();
if (oldProcInst==null || !oldProcInst.getId().equals(token.getProcessInstanceId())){
ProcessInstance procInst = processInstancePersister.find(ProcessInstance.class, token.getProcessInstanceId());
((WorkflowSessionLocalImpl)session).setCurrentProcessInstance(procInst);
}
if (oldActInst==null || !oldActInst.getId().equals(token.getElementInstanceId())){
ActivityInstance actInst = actInstPersistenceService.find(ActivityInstance.class, token.getElementInstanceId());
((WorkflowSessionLocalImpl)session).setCurrentActivityInstance(actInst);
}
try{
ActivityInstance thisActInst = session.getCurrentActivityInstance();
//将调度器中的timmer删除
ScheduleJobPersister scheduleJobPersister = persistenceService.getScheduleJobPersister();
List<ScheduleJob> scheduleJobs = scheduleJobPersister.findScheduleJob4ActivityInstance(thisActInst.getId());
if (scheduleJobs!=null && scheduleJobs.size()>0){
for (ScheduleJob job : scheduleJobs){
if (job.getState().getValue()<ScheduleJobState.DELIMITER.getValue()){
Scheduler scheduler = ctx.getEngineModule(Scheduler.class, thisActInst.getProcessType());
scheduler.unSchedule(job, ctx);
((ScheduleJobImpl)job).setState(ScheduleJobState.ABORTED);
scheduleJobPersister.saveOrUpdate(job);
}
}
}
}finally{
((WorkflowSessionLocalImpl)session).setCurrentProcessInstance(oldProcInst);
((WorkflowSessionLocalImpl)session).setCurrentActivityInstance(oldActInst);
}
}*/
}