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    1   /*
    2    * Copyright 2002-2006 the original author or authors.
    3    *
    4    * Licensed under the Apache License, Version 2.0 (the "License");
    5    * you may not use this file except in compliance with the License.
    6    * You may obtain a copy of the License at
    7    *
    8    *      http://www.apache.org/licenses/LICENSE-2.0
    9    *
   10    * Unless required by applicable law or agreed to in writing, software
   11    * distributed under the License is distributed on an "AS IS" BASIS,
   12    * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   13    * See the License for the specific language governing permissions and
   14    * limitations under the License.
   15    */
   16   
   17   package org.springframework.beans.factory;
   18   
   19   /**
   20    * Sub-interface implemented by bean factories that can be part
   21    * of a hierarchy.
   22    *
   23    * <p>The corresponding <code>setParentBeanFactory</code> method for bean
   24    * factories that allow setting the parent in a configurable
   25    * fashion can be found in the ConfigurableBeanFactory interface.
   26    *
   27    * @author Rod Johnson
   28    * @author Juergen Hoeller
   29    * @since 07.07.2003
   30    * @see org.springframework.beans.factory.config.ConfigurableBeanFactory#setParentBeanFactory
   31    */
   32   public interface HierarchicalBeanFactory extends BeanFactory {
   33   	
   34   	/**
   35   	 * Return the parent bean factory, or <code>null</code> if there is none.
   36   	 */
   37   	BeanFactory getParentBeanFactory();
   38   
   39   	/**
   40   	 * Return whether the local bean factory contains a bean of the given name,
   41   	 * ignoring beans defined in ancestor contexts.
   42   	 * <p>This is an alternative to <code>containsBean</code>, ignoring a bean
   43   	 * of the given name from an ancestor bean factory.
   44   	 * @param name the name of the bean to query
   45   	 * @return whether a bean with the given name is defined in the local factory
   46   	 * @see org.springframework.beans.factory.BeanFactory#containsBean
   47   	 */
   48   	boolean containsLocalBean(String name);
   49   
   50   }

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