ejbobjectfactory.java

一个非常好的FRAMWRK!是一个外国组织做的!不!

/*
 * Copyright 2003-2005 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.jdon.bussinessproxy.target;

import java.lang.reflect.Method;

import javax.ejb.EJBHome;
import javax.ejb.EJBLocalHome;
import javax.ejb.EJBLocalObject;
import javax.ejb.EJBObject;

import com.jdon.bussinessproxy.TargetMetaDef;
import com.jdon.bussinessproxy.meta.EJBTargetMetaDef;
import com.jdon.servicelocator.ServiceLocatorException;
import com.jdon.servicelocator.web.ServiceLocator;
import com.jdon.util.Debug;

/**
 * @author <a href="mailto:[e-mail]">banq</a>
 *
 */
public class EJBObjectFactory {
    private final static String module = EJBObjectFactory.class.getName();
    
    private ServiceLocator sl;
    
    
    /**
     * @param sl
     */
    public EJBObjectFactory(ServiceLocator sl) {
        super();
        this.sl = sl;
    }

    public Object create(TargetMetaDef targetMetaDef) throws Exception{
        Object obj = null;
        Debug.logVerbose(" enter createObject in EJBTargetService " + targetMetaDef.getClassName(), module);
        try {
            EJBTargetMetaDef eJBMetaDef = (EJBTargetMetaDef) targetMetaDef;
            if (eJBMetaDef.isLocal()) {
                EJBLocalHome home = (EJBLocalHome) sl.getLocalHome(eJBMetaDef.getJndiName());
                Method createMethod = home.getClass().getMethod("create", null);
                obj = (EJBLocalObject) createMethod.invoke(home, null);
            } else {
                EJBHome home = sl.getRemoteHome(eJBMetaDef.getJndiName(), eJBMetaDef.getHomeClass());
                Method createMethod = home.getClass().getMethod("create", null);
                obj = (EJBObject) createMethod.invoke(home, null);                
            }
        } catch (ServiceLocatorException sle) {
            Debug.logError("locator error: " + sle, module);
            throw new Exception("JNID error:" + sle);
        } catch (Exception ex) {
            Debug.logError("create ejb  error: " + ex, module);
            throw new Exception(ex);
        }
        return obj;    
    }

}