dynamicproxyweaving.java

用jbuilder写的源程序

/**
 * Copyright 2003-2006 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.dyncproxy;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;

import com.jdon.aop.AopClient;
import com.jdon.container.access.TargetMetaRequest;
import com.jdon.util.Debug;


/**
  * Dynamic Proxy Weaving mode
  * Weaving implemention is dynamic proxy
  * Every target service object has its DynamicProxyWeaving object
  *
 * 动态代理类 可实现AOP拦截
 * @author banq
 */

public class DynamicProxyWeaving implements InvocationHandler, java.io.Serializable {

  private final static String module = DynamicProxyWeaving.class.getName();

  private AopClient aopClient;
  private TargetMetaRequest targetMetaRequest;

  public DynamicProxyWeaving(TargetMetaRequest targetMetaRequest, AopClient aopClient) {
    this.targetMetaRequest = targetMetaRequest;
    this.aopClient = aopClient;
  }
  
  /**
   * 方法调用
   * 需要拦截方法在这里实现。目前实现arround intercept
   * @param p_proxy Object
   * @param m Method
   * @param args Object[]
   * @throws Throwable
   * @return Object
   */
  public Object invoke(Object p_proxy, Method m, Object[] args) throws
      Throwable {
  	Debug.logVerbose("<################################>Action: JdonFramework core entrance", module);	
    Debug.logVerbose("[JdonFramework]<################>execute method=" + m.getDeclaringClass().getName() + "." + m.getName() , module);
    Object result = null;
    try {
      result = aopClient.invoke(targetMetaRequest, m, args);
      Debug.logVerbose("[JdonFramework]<################>finish executing method=" + m.getDeclaringClass().getName() + "." + m.getName() + " successfully!", module);
      Debug.logVerbose("<################################><end:", module);
    } catch (Exception ex) {
      Debug.logError(ex, module);
    } catch (Throwable ex) {
      throw new Throwable(ex);
    }

    return result;

  }
    

}