aopclient.java

Java/J2EE框架Jdon-Framework系统的Sample

/**
 * Copyright 2005 Jdon.com
 * 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;

import com.jdon.util.Debug;
import com.jdon.aop.joinpoint.JoinpointFactory;
import org.aopalliance.intercept.MethodInvocation;
import com.jdon.bussinessproxy.cache.ComponentCacheVisitor;

public class AopClient {

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

  private JoinpointFactory advisor;

  public AopClient(JoinpointFactory advisor) {
    this.advisor = advisor;
  }

  /**
   * 方法调用
   */
  public Object invoke(ComponentCacheVisitor cm, TargetMetaDef targetMetaDef) throws
      Throwable {
    Debug.logVerbose(" enter AOP invoker ", module);
    Object result = null;
    MethodInvocation methodInvocation = null;
    try {
      methodInvocation = advisor.createJoinpoint(cm, targetMetaDef);
      Debug.logVerbose(" MethodInvocation will proceed ... ", module);
      result = methodInvocation.proceed();
    } catch (Exception ex) {
      Debug.logError(ex, module);
      throw new Exception(ex);
    } catch (Throwable ex) {
      throw new Throwable(ex);
    }
    return result;

  }

}