infra.beans.factory.InitializationBeanPostProcessor Maven / Gradle / Ivy
/*
* Copyright 2017 - 2024 the original author or authors.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see [https://www.gnu.org/licenses/]
*/
package infra.beans.factory;
import infra.beans.BeansException;
import infra.beans.factory.config.BeanPostProcessor;
/**
* Factory hook that allows for custom modification of new bean instances
* — for example, checking for marker interfaces or wrapping beans with
* proxies.
*
* post process when beans initialization
*
*
* @author Harry Yang 2021/11/19 21:23
* @since 4.0
*/
public interface InitializationBeanPostProcessor extends BeanPostProcessor {
/**
* Apply this {@code BeanPostProcessor} to the given new bean instance
* before any bean initialization callbacks (like InitializingBean's
* {@code afterPropertiesSet} or a custom init-method). The bean will already be
* populated with property values. The returned bean instance may be a wrapper
* around the original.
*
* The default implementation returns the given {@code bean} as-is.
*
* @param bean The new bean instance
* @param beanName The definition of the bean
* @return the bean instance to use, either the original or a wrapped one; if
* {@code null}, no subsequent BeanPostProcessors will be invoked
* @throws BeansException in case of errors
* @see InitializingBean#afterPropertiesSet
*/
default Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
return bean;
}
/**
* Apply this {@code BeanPostProcessor} to the given new bean instance
* after any bean initialization callbacks (like InitializingBean's
* {@code afterPropertiesSet} or a custom init-method). The bean will already be
* populated with property values. The returned bean instance may be a wrapper
* around the original.
*
*
* The default implementation returns the given {@code bean} as-is.
*
* @param bean the new bean instance, fully initialized
* @param beanName the definition of the bean
* @return the bean instance to use, either the original or a wrapped one; if
* {@code null}, no subsequent BeanPostProcessors will be invoked
* @throws BeansException in case of errors
* @see InitializingBean#afterPropertiesSet
* @see FactoryBean
*/
default Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
return bean;
}
}