/*
* Copyright 2002-2008 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
*
* http://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.BeanDefinitionStoreException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.core.AliasRegistry;
/**
* Interface for registries that hold bean definitions, for example RootBeanDefinition
* and ChildBeanDefinition instances. Typically implemented by BeanFactories that
* internally work with the AbstractBeanDefinition hierarchy.
*
* <p>This is the only interface in Spring's bean factory packages that encapsulates
* <i>registration</i> of bean definitions. The standard BeanFactory interfaces
* only cover access to a <i>fully configured factory instance</i>.
*
* <p>Spring's bean definition readers expect to work on an implementation of this
* interface. Known implementors within the Spring core are DefaultListableBeanFactory
* and GenericApplicationContext.
*
* @author Juergen Hoeller
* @since 26.11.2003
* @see org.springframework.beans.factory.config.BeanDefinition
* @see AbstractBeanDefinition
* @see RootBeanDefinition
* @see ChildBeanDefinition
* @see DefaultListableBeanFactory
* @see org.springframework.context.support.GenericApplicationContext
* @see org.springframework.beans.factory.xml.XmlBeanDefinitionReader
* @see PropertiesBeanDefinitionReader
*/
public interface BeanDefinitionRegistry extends AliasRegistry {
/**
* Register a new bean definition with this registry.
* Must support RootBeanDefinition and ChildBeanDefinition.
* @param beanName the name of the bean instance to register
* @param beanDefinition definition of the bean instance to register
* @throws BeanDefinitionStoreException if the BeanDefinition is invalid
* or if there is already a BeanDefinition for the specified bean name
* (and we are not allowed to override it)
* @see RootBeanDefinition
* @see ChildBeanDefinition
*/
void registerBeanDefinition(String beanName, BeanDefinition beanDefinition)
throws BeanDefinitionStoreException;
/**
* Remove the BeanDefinition for the given name.
* @param beanName the name of the bean instance to register
* @throws NoSuchBeanDefinitionException if there is no such bean definition
*/
void removeBeanDefinition(String beanName) throws NoSuchBeanDefinitionException;
/**
* Return the BeanDefinition for the given bean name.
* @param beanName name of the bean to find a definition for
* @return the BeanDefinition for the given name (never <code>null</code>)
* @throws NoSuchBeanDefinitionException if there is no such bean definition
*/
BeanDefinition getBeanDefinition(String beanName) throws NoSuchBeanDefinitionException;
/**
* Check if this registry contains a bean definition with the given name.
* @param beanName the name of the bean to look for
* @return if this registry contains a bean definition with the given name
*/
boolean containsBeanDefinition(String beanName);
/**
* Return the names of all beans defined in this registry.
* @return the names of all beans defined in this registry,
* or an empty array if none defined
*/
String[] getBeanDefinitionNames();
/**
* Return the number of beans defined in the registry.
* @return the number of beans defined in the registry
*/
int getBeanDefinitionCount();
/**
* Determine whether the given bean name is already in use within this registry,
* i.e. whether there is a local bean or alias registered under this name.
* @param beanName the name to check
* @return whether the given bean name is already in use
*/
boolean isBeanNameInUse(String beanName);
}
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