/*
* 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.handle.impl;
import java.lang.reflect.Method;
import org.springframework.beans.BeanUtils;
import org.springframework.util.StringUtils;
import com.starflow.wf.core.util.ApplicationContextHolder;
import com.starflow.wf.engine.ProcessEngineException;
import com.starflow.wf.engine.core.RelaDataManagerBuilder;
import com.starflow.wf.engine.core.data.RelaDataManager;
import com.starflow.wf.engine.event.AbstractFlowEvent;
import com.starflow.wf.engine.event.ActivityStartEvent;
import com.starflow.wf.engine.handle.BaseHandle;
import com.starflow.wf.engine.model.ActivityInst;
import com.starflow.wf.engine.model.ProcessInstance;
import com.starflow.wf.engine.model.elements.ActivityElement;
import com.starflow.wf.service.spi.IToolAppAction;
/**
* 执行自动环节业务逻辑
*
* @author libinsong1204@gmail.com
* @version 1.0
*/
public class ToolAppHandle extends BaseHandle {
public void action(final ActivityStartEvent event, final ActivityInst activityInst) {
ActivityElement activityXml = event.getProcessXml().getActivitys().get(activityInst.getActivityDefId());
String beanName = activityXml.getExecuteAction();
if(StringUtils.hasText(beanName)) {
IAction action = new Action(beanName);
action(event, activityInst, activityXml, action);
} else {
logger.warn("自动环节【{}】没有设置执行逻辑", activityXml.getName());
}
}
protected void saveResultRelaData(ActivityStartEvent event, Object result, ActivityElement activityXml) {
//执行结果放入相关数据区。
if(result != null) {
RelaDataManager relaDataManager = RelaDataManagerBuilder.buildRelaDataManager();
long processInstId = event.getProcessInstance().getProcessInstId();
String activityDefId = event.getPreActivityXml().getId();
relaDataManager.bindAutoActLogicResult(processInstId, activityDefId, result);
}
}
private static class Action implements IAction {
private String beanName;
public Action(String beanName) {
this.beanName = beanName.trim();
}
@Override
public Object execute(AbstractFlowEvent event, ActivityInst activityInst) {
ProcessInstance cloneProcessInstance = new ProcessInstance();
BeanUtils.copyProperties(event.getProcessInstance(), cloneProcessInstance);
ActivityInst cloneActivityInst = new ActivityInst();
BeanUtils.copyProperties(activityInst, cloneActivityInst);
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("#");
IToolAppAction action = ApplicationContextHolder.getBean(beanName, IToolAppAction.class);
if(index == -1) {
return action.execute(cloneProcessInstance, cloneActivityInst);
} else {
//反射调用bean指定的方法。
String methodName = beanName.substring(index + 1);
if("".equals(beanName))
throw new ProcessEngineException("IToolAppAction 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);
return method.invoke(action, cloneProcessInstance, cloneActivityInst);
} catch (Exception e) {
throw new ProcessEngineException("IToolAppAction 实现类Bean："+beanName+"，没有此方法", e);
}
}
} catch (Exception e) {
throw new ProcessEngineException("自动环节业务逻辑执行失败", e);
}
}
}
}