spring ExtendedBeanInfoFactory 源码
spring ExtendedBeanInfoFactory 代码
文件路径：/spring-beans/src/main/java/org/springframework/beans/ExtendedBeanInfoFactory.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 java.beans.Introspector;
import java.lang.reflect.Method;
import org.springframework.core.Ordered;
import org.springframework.lang.Nullable;
/**
* {@link BeanInfoFactory} implementation that evaluates whether bean classes have
* "non-standard" JavaBeans setter methods and are thus candidates for introspection
* by Spring's (package-visible) {@code ExtendedBeanInfo} implementation.
*
* <p>Ordered at {@link Ordered#LOWEST_PRECEDENCE} to allow other user-defined
* {@link BeanInfoFactory} types to take precedence.
*
* @author Chris Beams
* @since 3.2
* @see BeanInfoFactory
* @see CachedIntrospectionResults
*/
public class ExtendedBeanInfoFactory implements BeanInfoFactory, Ordered {
/**
* Return an {@link ExtendedBeanInfo} for the given bean class, if applicable.
*/
@Override
@Nullable
public BeanInfo getBeanInfo(Class<?> beanClass) throws IntrospectionException {
return (supports(beanClass) ? new ExtendedBeanInfo(Introspector.getBeanInfo(beanClass)) : null);
}
/**
* Return whether the given bean class declares or inherits any non-void
* returning bean property or indexed property setter methods.
*/
private boolean supports(Class<?> beanClass) {
for (Method method : beanClass.getMethods()) {
if (ExtendedBeanInfo.isCandidateWriteMethod(method)) {
return true;
}
}
return false;
}
@Override
public int getOrder() {
return Ordered.LOWEST_PRECEDENCE;
}
}
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