spring MergedBeanDefinitionPostProcessor 源码
spring MergedBeanDefinitionPostProcessor 代码
文件路径：/spring-beans/src/main/java/org/springframework/beans/factory/support/MergedBeanDefinitionPostProcessor.java
/*
* Copyright 2002-2018 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
*
* https://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 org.springframework.beans.factory.support;
import org.springframework.beans.factory.config.BeanPostProcessor;
/**
* Post-processor callback interface for <i>merged</i> bean definitions at runtime.
* {@link BeanPostProcessor} implementations may implement this sub-interface in order
* to post-process the merged bean definition (a processed copy of the original bean
* definition) that the Spring {@code BeanFactory} uses to create a bean instance.
*
* <p>The {@link #postProcessMergedBeanDefinition} method may for example introspect
* the bean definition in order to prepare some cached metadata before post-processing
* actual instances of a bean. It is also allowed to modify the bean definition but
* <i>only</i> for definition properties which are actually intended for concurrent
* modification. Essentially, this only applies to operations defined on the
* {@link RootBeanDefinition} itself but not to the properties of its base classes.
*
* @author Juergen Hoeller
* @since 2.5
* @see org.springframework.beans.factory.config.ConfigurableBeanFactory#getMergedBeanDefinition
*/
public interface MergedBeanDefinitionPostProcessor extends BeanPostProcessor {
/**
* Post-process the given merged bean definition for the specified bean.
* @param beanDefinition the merged bean definition for the bean
* @param beanType the actual type of the managed bean instance
* @param beanName the name of the bean
* @see AbstractAutowireCapableBeanFactory#applyMergedBeanDefinitionPostProcessors
*/
void postProcessMergedBeanDefinition(RootBeanDefinition beanDefinition, Class<?> beanType, String beanName);
/**
* A notification that the bean definition for the specified name has been reset,
* and that this post-processor should clear any metadata for the affected bean.
* <p>The default implementation is empty.
* @param beanName the name of the bean
* @since 5.1
* @see DefaultListableBeanFactory#resetBeanDefinition
*/
default void resetBeanDefinition(String beanName) {
}
}
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