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/*
 * Copyright 2002-2013 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.context.annotation;

import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.support.BeanDefinitionRegistryPostProcessor;
import org.springframework.core.type.AnnotationMetadata;

/**
 * Interface to be implemented by types that register additional bean definitions when
 * processing @{@link Configuration} classes. Useful when operating at the bean definition
 * level (as opposed to {@code @Bean} method/instance level) is desired or necessary.
 *
 * 

Along with {@code @Configuration} and {@link ImportSelector}, classes of this type * may be provided to the @{@link Import} annotation (or may also be returned from an * {@code ImportSelector}). * *

An {@link ImportBeanDefinitionRegistrar} may implement any of the following * {@link org.springframework.beans.factory.Aware Aware} interfaces, and their respective * methods will be called prior to {@link #registerBeanDefinitions}: *

    *
  • {@link org.springframework.context.EnvironmentAware}
  • *
  • {@link org.springframework.beans.factory.BeanFactoryAware BeanFactoryAware} *
  • {@link org.springframework.beans.factory.BeanClassLoaderAware BeanClassLoaderAware} *
  • {@link org.springframework.context.ResourceLoaderAware ResourceLoaderAware} *
* *

See implementations and associated unit tests for usage examples. * * @author Chris Beams * @since 3.1 * @see Import * @see ImportSelector * @see Configuration */ public interface ImportBeanDefinitionRegistrar { /** * Register bean definitions as necessary based on the given annotation metadata of * the importing {@code @Configuration} class. *

Note that {@link BeanDefinitionRegistryPostProcessor} types may not be * registered here, due to lifecycle constraints related to {@code @Configuration} * class processing. * @param importingClassMetadata annotation metadata of the importing class * @param registry current bean definition registry */ public void registerBeanDefinitions( AnnotationMetadata importingClassMetadata, BeanDefinitionRegistry registry); }





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