spring HierarchicalBeanFactory 源码
spring HierarchicalBeanFactory 代码
文件路径：/spring-beans/src/main/java/org/springframework/beans/factory/HierarchicalBeanFactory.java
/*
* Copyright 2002-2012 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;
import org.springframework.lang.Nullable;
/**
* Sub-interface implemented by bean factories that can be part
* of a hierarchy.
*
* <p>The corresponding {@code setParentBeanFactory} method for bean
* factories that allow setting the parent in a configurable
* fashion can be found in the ConfigurableBeanFactory interface.
*
* @author Rod Johnson
* @author Juergen Hoeller
* @since 07.07.2003
* @see org.springframework.beans.factory.config.ConfigurableBeanFactory#setParentBeanFactory
*/
public interface HierarchicalBeanFactory extends BeanFactory {
/**
* Return the parent bean factory, or {@code null} if there is none.
*/
@Nullable
BeanFactory getParentBeanFactory();
/**
* Return whether the local bean factory contains a bean of the given name,
* ignoring beans defined in ancestor contexts.
* <p>This is an alternative to {@code containsBean}, ignoring a bean
* of the given name from an ancestor bean factory.
* @param name the name of the bean to query
* @return whether a bean with the given name is defined in the local factory
* @see BeanFactory#containsBean
*/
boolean containsLocalBean(String name);
}
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