/*
* Copyright 2010-2011 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.starflow.wf.engine.core.participant.impl;
import java.lang.reflect.Method;
import java.util.List;
import org.springframework.beans.BeanUtils;
import com.starflow.wf.core.util.ApplicationContextHolder;
import com.starflow.wf.engine.ProcessEngineException;
import com.starflow.wf.engine.core.participant.ParticipantMode;
import com.starflow.wf.engine.event.AbstractFlowEvent;
import com.starflow.wf.engine.model.Participant;
import com.starflow.wf.engine.model.ProcessInstance;
import com.starflow.wf.engine.model.elements.ActivityElement;
import com.starflow.wf.service.spi.IParticipantService;
/**
*
* @author libinsong1204@gmail.com
* @version 1.0
*/
public class ActLogicParticipantMode implements ParticipantMode {
@SuppressWarnings("unchecked")
public List<Participant> creatParticipants(AbstractFlowEvent event,
ActivityElement activityXml) {
ProcessInstance cloneProcessInstance = new ProcessInstance();
BeanUtils.copyProperties(event.getProcessInstance(), cloneProcessInstance);
String beanName = activityXml.getParticiLogic();
List<Participant> participants;
try {
//beanName 名称后面没有指定调用方法时。直接调用IToolAppAction.execute
int index = beanName.indexOf("#");
IParticipantService action = ApplicationContextHolder.getBean(beanName, IParticipantService.class);
if(index == -1) {
participants = action.createWorkItemParticipants(cloneProcessInstance);
} else {
//反射调用bean指定的方法。
String methodName = beanName.substring(index + 1);
if("".equals(beanName))
throw new ProcessEngineException("IParticipantService 实现类Bean："+beanName+"，没有指定方法名称");
beanName = beanName.substring(0, index);
try {
Method method = action.getClass().getMethod(methodName, long.class, long.class);
participants = (List<Participant>)method.invoke(action, cloneProcessInstance);
} catch (Exception e) {
throw new ProcessEngineException("IParticipantService 实现类Bean："+beanName+"，没有此方法", e);
}
}
} catch (Exception e) {
throw new ProcessEngineException("通过业务逻辑获取参与者失败", e);
}
return participants;
}
}