/*
* 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.event.support;
import java.lang.reflect.Method;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeanUtils;
import com.starflow.wf.core.util.ApplicationContextHolder;
import com.starflow.wf.engine.ProcessEngineException;
import com.starflow.wf.engine.core.Constants;
import com.starflow.wf.engine.event.AbstractFlowEvent;
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.IActivateRuleAction;
public class ActivityStartRuleUtil {
private static Logger logger = LoggerFactory.getLogger(ActivityStartRuleUtil.class);
/**
* 获取环节的激活规则
*
* @param event
* @return
*/
public static boolean isStartActivity(AbstractFlowEvent event, ActivityInst activityInst) {
boolean isStart = true;
ActivityElement activityXml = event.getProcessXml().getActivitys().get(activityInst.getActivityDefId());
if(logger.isDebugEnabled()) {
logger.debug("环节【{}】启动规则：{}", activityXml.getName(), activityXml.getActivateRuleType());
}
if(Constants.ACT_ACTIVATE_RULE_WAIT.equalsIgnoreCase(activityXml.getActivateRuleType()))
isStart = false;
else if(Constants.ACT_ACTIVATE_RULE_LOGIC.equalsIgnoreCase(activityXml.getActivateRuleType())) {
String beanName = activityXml.getStartStrategybyAppAction();
try {
ProcessInstance cloneProcessInstance = new ProcessInstance();
BeanUtils.copyProperties(event.getProcessInstance(), cloneProcessInstance);
ActivityInst cloneActivityInst = new ActivityInst();
BeanUtils.copyProperties(activityInst, cloneActivityInst);
isStart = executeActivateRule(beanName, cloneProcessInstance, cloneActivityInst);
} catch (Exception e) {
throw new ProcessEngineException("环节激活规则逻辑失败", e);
}
}
return isStart;
}
/**
* 执行环节激活规则逻辑
* @param beanName
* @param cloneProcessInstance
* @param cloneActivityInst
* @return
*/
private static boolean executeActivateRule(String beanName, ProcessInstance cloneProcessInstance, ActivityInst cloneActivityInst) {
boolean isStart = true;
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("#");
IActivateRuleAction action = ApplicationContextHolder.getBean(beanName, IActivateRuleAction.class);
if(index == -1) {
isStart = 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("IActivateRuleAction 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);
isStart = (Boolean)method.invoke(action, cloneProcessInstance, cloneActivityInst);
} catch (Exception e) {
throw new ProcessEngineException("IActivateRuleAction 实现类Bean："+beanName+"，没有此方法", e);
}
}
} catch (Exception e) {
throw new ProcessEngineException("环节激活规则逻辑执行失败", e);
}
return isStart;
}
}