001/*
002 * Copyright 2002-2015 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;
024
025/**
026 * Extension of {@link AbstractAutoProxyCreator} which implements {@link BeanFactoryAware},
027 * adds exposure of the original target class for each proxied bean
028 * ({@link AutoProxyUtils#ORIGINAL_TARGET_CLASS_ATTRIBUTE}),
029 * and participates in an externally enforced target-class mode for any given bean
030 * ({@link AutoProxyUtils#PRESERVE_TARGET_CLASS_ATTRIBUTE}).
031 * This post-processor is therefore aligned with {@link AbstractAutoProxyCreator}.
032 *
033 * @author Juergen Hoeller
034 * @since 4.2.3
035 * @see AutoProxyUtils#shouldProxyTargetClass
036 * @see AutoProxyUtils#determineTargetClass
037 */
038@SuppressWarnings("serial")
039public abstract class AbstractBeanFactoryAwareAdvisingPostProcessor extends AbstractAdvisingBeanPostProcessor
040                implements BeanFactoryAware {
041
042        private ConfigurableListableBeanFactory beanFactory;
043
044
045        @Override
046        public void setBeanFactory(BeanFactory beanFactory) {
047                this.beanFactory = (beanFactory instanceof ConfigurableListableBeanFactory ?
048                                (ConfigurableListableBeanFactory) beanFactory : null);
049        }
050
051        @Override
052        protected ProxyFactory prepareProxyFactory(Object bean, String beanName) {
053                if (this.beanFactory != null) {
054                        AutoProxyUtils.exposeTargetClass(this.beanFactory, beanName, bean.getClass());
055                }
056
057                ProxyFactory proxyFactory = super.prepareProxyFactory(bean, beanName);
058                if (!proxyFactory.isProxyTargetClass() && this.beanFactory != null &&
059                                AutoProxyUtils.shouldProxyTargetClass(this.beanFactory, beanName)) {
060                        proxyFactory.setProxyTargetClass(true);
061                }
062                return proxyFactory;
063        }
064
065}