spring BeanInfoFactory 源码
spring BeanInfoFactory 代码
文件路径：/spring-beans/src/main/java/org/springframework/beans/BeanInfoFactory.java
/*
* 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
*
* 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;
import java.beans.BeanInfo;
import java.beans.IntrospectionException;
import org.springframework.lang.Nullable;
/**
* Strategy interface for creating {@link BeanInfo} instances for Spring beans.
* Can be used to plug in custom bean property resolution strategies (e.g. for other
* languages on the JVM) or more efficient {@link BeanInfo} retrieval algorithms.
*
* <p>BeanInfoFactories are instantiated by the {@link CachedIntrospectionResults},
* by using the {@link org.springframework.core.io.support.SpringFactoriesLoader}
* utility class.
*
* When a {@link BeanInfo} is to be created, the {@code CachedIntrospectionResults}
* will iterate through the discovered factories, calling {@link #getBeanInfo(Class)}
* on each one. If {@code null} is returned, the next factory will be queried.
* If none of the factories support the class, a standard {@link BeanInfo} will be
* created as a default.
*
* <p>Note that the {@link org.springframework.core.io.support.SpringFactoriesLoader}
* sorts the {@code BeanInfoFactory} instances by
* {@link org.springframework.core.annotation.Order @Order}, so that ones with a
* higher precedence come first.
*
* @author Arjen Poutsma
* @since 3.2
* @see CachedIntrospectionResults
* @see org.springframework.core.io.support.SpringFactoriesLoader
*/
public interface BeanInfoFactory {
/**
* Return the bean info for the given class, if supported.
* @param beanClass the bean class
* @return the BeanInfo, or {@code null} if the given class is not supported
* @throws IntrospectionException in case of exceptions
*/
@Nullable
BeanInfo getBeanInfo(Class<?> beanClass) throws IntrospectionException;
}
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