com.googlecode.starflow.engine.event.support.ActivityStartRuleUtil.java Source code

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Here is the source code for com.googlecode.starflow.engine.event.support.ActivityStartRuleUtil.java

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/*
 * 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.googlecode.starflow.engine.event.support;

import java.lang.reflect.Method;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeanUtils;

import com.googlecode.starflow.core.util.ApplicationContextHolder;
import com.googlecode.starflow.engine.ProcessEngineException;
import com.googlecode.starflow.engine.core.Constants;
import com.googlecode.starflow.engine.event.AbstractFlowEvent;
import com.googlecode.starflow.engine.model.ActivityInst;
import com.googlecode.starflow.engine.model.ProcessInstance;
import com.googlecode.starflow.engine.model.elements.ActivityElement;
import com.googlecode.starflow.service.spi.IActivateRuleAction;

public class ActivityStartRuleUtil {
    private static Logger logger = LoggerFactory.getLogger(ActivityStartRuleUtil.class);

    /**
     * ?
     * 
     * @param event
     * @return
     */
    public static boolean isStartActivity(AbstractFlowEvent event, ActivityInst activityInst) {
        boolean isStart = true;
        ActivityElement activityElement = event.getProcessElement().getActivitys()
                .get(activityInst.getActivityDefId());

        if (logger.isDebugEnabled()) {
            logger.debug("?{}?{}", activityElement.getName(),
                    activityElement.getActivateRuleType());
        }

        if (Constants.ACT_ACTIVATE_RULE_WAIT.equalsIgnoreCase(activityElement.getActivateRuleType()))
            isStart = false;
        else if (Constants.ACT_ACTIVATE_RULE_LOGIC.equalsIgnoreCase(activityElement.getActivateRuleType())) {
            String beanName = activityElement.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("", e);
            }
        }

        return isStart;
    }

    /**
     * 
     * @param beanName
     * @param cloneProcessInstance
     * @param cloneActivityInst
     * @return
     */
    private static boolean executeActivateRule(String beanName, ProcessInstance cloneProcessInstance,
            ActivityInst cloneActivityInst) {
        boolean isStart = true;

        try {
            //beanName ????IToolAppAction.execute
            int index = beanName.indexOf("#");
            IActivateRuleAction action = ApplicationContextHolder.getBean(beanName, IActivateRuleAction.class);
            if (index == -1) {
                isStart = action.execute(cloneProcessInstance, cloneActivityInst);
            } else {
                //??bean
                String methodName = beanName.substring(index + 1);
                if ("".equals(beanName))
                    throw new ProcessEngineException(
                            "IActivateRuleAction Bean" + beanName + "??");

                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 Bean" + beanName + "", e);
                }
            }
        } catch (Exception e) {
            throw new ProcessEngineException("", e);
        }
        return isStart;
    }
}