/**
* 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.engine.modules.instancemanager.impl;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.fireflow.client.WorkflowSession;
import org.fireflow.client.WorkflowStatement;
import org.fireflow.client.impl.InternalSessionAttributeKeys;
import org.fireflow.client.impl.WorkflowSessionLocalImpl;
import org.fireflow.engine.context.AbsEngineModule;
import org.fireflow.engine.context.RuntimeContext;
import org.fireflow.engine.context.RuntimeContextAware;
import org.fireflow.engine.entity.EntityProperty;
import org.fireflow.engine.entity.runtime.ActivityInstance;
import org.fireflow.engine.entity.runtime.ActivityInstanceState;
import org.fireflow.engine.entity.runtime.ProcessInstanceProperty;
import org.fireflow.engine.entity.runtime.impl.ActivityInstanceImpl;
import org.fireflow.engine.invocation.ServiceInvoker;
import org.fireflow.engine.modules.beanfactory.BeanFactory;
import org.fireflow.engine.modules.calendar.CalendarService;
import org.fireflow.engine.modules.event.EventBroadcaster;
import org.fireflow.engine.modules.event.EventBroadcasterManager;
import org.fireflow.engine.modules.instancemanager.ActivityInstanceManager;
import org.fireflow.engine.modules.instancemanager.event.ActivityInstanceEvent;
import org.fireflow.engine.modules.instancemanager.event.ActivityInstanceEventTrigger;
import org.fireflow.engine.modules.persistence.ActivityInstancePersister;
import org.fireflow.engine.modules.persistence.PersistenceService;
import org.fireflow.engine.modules.workitem.WorkItemManager;
import org.fireflow.model.servicedef.ServiceDef;
import org.fireflow.pvm.kernel.BookMark;
import org.fireflow.pvm.kernel.ExecutionEntrance;
import org.fireflow.pvm.kernel.KernelManager;
import org.fireflow.pvm.kernel.Token;
/**
* @author 非也
* @version 2.0
*/
public abstract class AbsActivityInstanceManager extends AbsEngineModule implements
ActivityInstanceManager,RuntimeContextAware {
Log log = LogFactory.getLog(AbsActivityInstanceManager.class);
protected RuntimeContext runtimeContext = null;
protected Map<String,ServiceInvoker> serviceInvokerRegistry = new HashMap<String,ServiceInvoker>();
public RuntimeContext getRuntimeContext() {
return runtimeContext;
}
public void setRuntimeContext(RuntimeContext ctx) {
runtimeContext = ctx;
}
/* (non-Javadoc)
* @see org.fireflow.engine.instancemanager.ActivityInstanceManager#completeActivityInstance(org.fireflow.engine.WorkflowSession, org.fireflow.engine.entity.runtime.ActivityInstance)
*/
public void onServiceCompleted(WorkflowSession session,
ActivityInstance activityInstance) {
WorkflowSessionLocalImpl sessionLocalImpl = (WorkflowSessionLocalImpl)session;
RuntimeContext runtimeContext = sessionLocalImpl.getRuntimeContext();
KernelManager kernelManager = runtimeContext.getDefaultEngineModule(KernelManager.class);
Token token = kernelManager.getTokenById(activityInstance.getTokenId(), activityInstance.getProcessType());
BookMark bookMark = new BookMark();
bookMark.setToken(token);
bookMark.setExtraArg(BookMark.SOURCE_TOKEN, token);
bookMark.setExecutionEntrance(ExecutionEntrance.FORWARD_TOKEN);
kernelManager.addBookMark(bookMark);
kernelManager.execute(sessionLocalImpl);
}
// public ActivityInstance abortActivityInstance(WorkflowSession session , ActivityInstance activityInstance){
// RuntimeContext context = ((WorkflowSessionLocalImpl)session).getRuntimeContext();
// KernelManager kernelManager = context.getDefaultEngineModule(KernelManager.class);
// Token token = kernelManager.getToken(activityInstance.getTokenId(), activityInstance.getProcessType());
//
// kernelManager.fireTerminationEvent(session, token, null);
//
// return activityInstance;
// }
public ActivityInstance suspendActivityInstance(WorkflowSession session , ActivityInstance activityInstance){
RuntimeContext context = ((WorkflowSessionLocalImpl)session).getRuntimeContext();
PersistenceService persistenceService = context.getEngineModule(PersistenceService.class, activityInstance.getProcessType());
//从session取相关字段的值
WorkflowSessionLocalImpl localSession = (WorkflowSessionLocalImpl)session;
Map<EntityProperty,Object> fieldsValues = (Map<EntityProperty,Object>)localSession.getAttribute(InternalSessionAttributeKeys.FIELDS_VALUES);
if (fieldsValues!=null){
String note = (String)fieldsValues.get(ProcessInstanceProperty.NOTE);
if (!StringUtils.isEmpty(note)){
((ActivityInstanceImpl)activityInstance).setNote(note);
}
}
ActivityInstancePersister persister = persistenceService.getActivityInstancePersister();
((ActivityInstanceImpl)activityInstance).setSuspended(true);
persister.saveOrUpdate(activityInstance);
//发布事件
try{
WorkflowStatement stmt = localSession.createWorkflowStatement();
Object thisActivity = stmt.getWorkflowDefinitionElement(activityInstance);
this.fireActivityInstanceEvent(localSession, activityInstance, thisActivity, ActivityInstanceEventTrigger.ON_ACTIVITY_INSTANCE_SUSPENDED);
}catch(Exception e){
log.error(e.getMessage(), e);
}
return activityInstance;
}
public ActivityInstance restoreActivityInstance(WorkflowSession session , ActivityInstance activityInstance){
RuntimeContext context = ((WorkflowSessionLocalImpl)session).getRuntimeContext();
PersistenceService persistenceService = context.getEngineModule(PersistenceService.class, activityInstance.getProcessType());
//2、然后restore processInstance
//从session取相关字段的值
WorkflowSessionLocalImpl localSession = (WorkflowSessionLocalImpl)session;
Map<EntityProperty,Object> fieldsValues = (Map<EntityProperty,Object>)localSession.getAttribute(InternalSessionAttributeKeys.FIELDS_VALUES);
if (fieldsValues!=null){
String note = (String)fieldsValues.get(ProcessInstanceProperty.NOTE);
if (!StringUtils.isEmpty(note)){
((ActivityInstanceImpl)activityInstance).setNote(note);
}
}
ActivityInstancePersister persister = persistenceService.getActivityInstancePersister();
((ActivityInstanceImpl)activityInstance).setSuspended(false);
persister.saveOrUpdate(activityInstance);
//发布事件
try{
WorkflowStatement stmt = localSession.createWorkflowStatement();
Object thisActivity = stmt.getWorkflowDefinitionElement(activityInstance);
this.fireActivityInstanceEvent(localSession, activityInstance, thisActivity, ActivityInstanceEventTrigger.ON_ACTIVITY_INSTANCE_RESTORED);
}catch(Exception e){
log.error(e.getMessage(), e);
}
return activityInstance;
}
protected ServiceInvoker getServiceInvoker(RuntimeContext runtimeContext,ServiceDef service,String processType){
ServiceInvoker serviceInvoker = null;
String invokerBeanName = service.getInvokerBeanName();
String invokerClassName = service.getInvokerClassName();
//1、首先从缓存中获取
if (invokerClassName!=null && !invokerClassName.trim().equals("")){
serviceInvoker = this.serviceInvokerRegistry.get(invokerClassName.trim());
}
if (serviceInvoker==null && invokerBeanName!=null && !invokerBeanName.trim().equals("")){
serviceInvoker = this.serviceInvokerRegistry.get(invokerBeanName.trim());
}
if (serviceInvoker!=null){
return serviceInvoker;
}
//2、如果缓存没有，则重新通过BeanName创建
BeanFactory beanFactory = runtimeContext.getEngineModule(BeanFactory.class,processType);
if (serviceInvoker==null && !StringUtils.isEmpty(invokerBeanName)){
serviceInvoker = (ServiceInvoker)beanFactory.getBean(invokerBeanName.trim());
if (serviceInvoker!=null){
serviceInvokerRegistry.put(invokerBeanName.trim(), serviceInvoker);
return serviceInvoker;
}
}
// 3、如果没有创建成功，则通过className创建
if (serviceInvoker == null && !StringUtils.isEmpty(invokerClassName)) {
serviceInvoker = (ServiceInvoker) beanFactory
.createBean(invokerClassName);
if (serviceInvoker != null) {
serviceInvokerRegistry.put(invokerClassName.trim(),
serviceInvoker);
return serviceInvoker;
}
}
return serviceInvoker;
}
public void changeActivityInstanceState(WorkflowSession session,ActivityInstance activityInstance,ActivityInstanceState newState,Object workflowElement){
CalendarService calendarService = runtimeContext.getEngineModule(CalendarService.class,activityInstance.getProcessType());
PersistenceService persistenceStrategy = runtimeContext.getEngineModule(PersistenceService.class, activityInstance.getProcessType());
ActivityInstancePersister actInstPersistenceService = persistenceStrategy.getActivityInstancePersister();
WorkflowSessionLocalImpl localSession = (WorkflowSessionLocalImpl)session;
//执行abort操作
if (newState.getValue()==ActivityInstanceState.ABORTED.getValue() ){
Map<EntityProperty,Object> fieldsValues = (Map<EntityProperty,Object>)localSession.getAttribute(InternalSessionAttributeKeys.FIELDS_VALUES);
if (fieldsValues!=null){
String note = (String)fieldsValues.get(ProcessInstanceProperty.NOTE);
if (!StringUtils.isEmpty(note)){
((ActivityInstanceImpl)activityInstance).setNote(note);
}
}
if (!StringUtils.isEmpty(activityInstance.getServiceId())){
// 将Workitem设置为Aborted状态，
WorkItemManager wiMgr = runtimeContext.getEngineModule(WorkItemManager.class, activityInstance.getProcessType());
wiMgr.abortWorkfItemOfTheSameActInst(session,activityInstance);
}
}
if (newState.getValue()>ActivityInstanceState.DELIMITER.getValue()){
((ActivityInstanceImpl)activityInstance).setEndTime(calendarService.getSysDate());
}else if (newState.equals(ActivityInstanceState.RUNNING)){
((ActivityInstanceImpl)activityInstance).setStartedTime(calendarService.getSysDate());
}
((ActivityInstanceImpl)activityInstance).setState(newState);
actInstPersistenceService.saveOrUpdate(activityInstance);
if (newState.getValue()>ActivityInstanceState.DELIMITER.getValue()){
//发布AFTER_ACTIVITY_INSTANCE_END
this.fireActivityInstanceEvent(session, activityInstance, workflowElement, ActivityInstanceEventTrigger.AFTER_ACTIVITY_INSTANCE_END);
}
}
public void fireActivityInstanceEvent(WorkflowSession session,ActivityInstance actInst,Object activity,ActivityInstanceEventTrigger eventType){
try{
WorkflowSessionLocalImpl sessionLocalImpl = (WorkflowSessionLocalImpl)session;
RuntimeContext rtCtx = sessionLocalImpl.getRuntimeContext();
EventBroadcasterManager evetBroadcasterMgr = rtCtx.getDefaultEngineModule(EventBroadcasterManager.class);
EventBroadcaster broadcaster = evetBroadcasterMgr.getEventBroadcaster(ActivityInstanceEvent.class.getName());
if (broadcaster!=null){
ActivityInstanceEvent event = new ActivityInstanceEvent();
event.setSource(actInst);
event.setEventTrigger(eventType);
event.setWorkflowElement(activity);
event.setCurrentWorkflowSession(sessionLocalImpl);
broadcaster.fireEvent(sessionLocalImpl, event);
}
}catch(Exception e){
log.error(e.getMessage(),e);
}
}
}