001/* 002 * Copyright 2002-2018 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.aop.framework.autoproxy; 018 019import org.springframework.aop.framework.AbstractAdvisingBeanPostProcessor; 020import org.springframework.aop.framework.ProxyFactory; 021import org.springframework.beans.factory.BeanFactory; 022import org.springframework.beans.factory.BeanFactoryAware; 023import org.springframework.beans.factory.config.ConfigurableListableBeanFactory; 024import org.springframework.lang.Nullable; 025 026/** 027 * Extension of {@link AbstractAutoProxyCreator} which implements {@link BeanFactoryAware}, 028 * adds exposure of the original target class for each proxied bean 029 * ({@link AutoProxyUtils#ORIGINAL_TARGET_CLASS_ATTRIBUTE}), 030 * and participates in an externally enforced target-class mode for any given bean 031 * ({@link AutoProxyUtils#PRESERVE_TARGET_CLASS_ATTRIBUTE}). 032 * This post-processor is therefore aligned with {@link AbstractAutoProxyCreator}. 033 * 034 * @author Juergen Hoeller 035 * @since 4.2.3 036 * @see AutoProxyUtils#shouldProxyTargetClass 037 * @see AutoProxyUtils#determineTargetClass 038 */ 039@SuppressWarnings("serial") 040public abstract class AbstractBeanFactoryAwareAdvisingPostProcessor extends AbstractAdvisingBeanPostProcessor 041 implements BeanFactoryAware { 042 043 @Nullable 044 private ConfigurableListableBeanFactory beanFactory; 045 046 047 @Override 048 public void setBeanFactory(BeanFactory beanFactory) { 049 this.beanFactory = (beanFactory instanceof ConfigurableListableBeanFactory ? 050 (ConfigurableListableBeanFactory) beanFactory : null); 051 } 052 053 @Override 054 protected ProxyFactory prepareProxyFactory(Object bean, String beanName) { 055 if (this.beanFactory != null) { 056 AutoProxyUtils.exposeTargetClass(this.beanFactory, beanName, bean.getClass()); 057 } 058 059 ProxyFactory proxyFactory = super.prepareProxyFactory(bean, beanName); 060 if (!proxyFactory.isProxyTargetClass() && this.beanFactory != null && 061 AutoProxyUtils.shouldProxyTargetClass(this.beanFactory, beanName)) { 062 proxyFactory.setProxyTargetClass(true); 063 } 064 return proxyFactory; 065 } 066 067 @Override 068 protected boolean isEligible(Object bean, String beanName) { 069 return (!AutoProxyUtils.isOriginalInstance(beanName, bean.getClass()) && 070 super.isEligible(bean, beanName)); 071 } 072 073}