org.springframework.beans.factory.annotation.AnnotatedGenericBeanDefinition Maven / Gradle / Ivy
/*
* Copyright 2002-2019 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.factory.annotation;
import org.springframework.beans.factory.support.GenericBeanDefinition;
import org.springframework.core.type.AnnotationMetadata;
import org.springframework.core.type.MethodMetadata;
import org.springframework.core.type.StandardAnnotationMetadata;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
/**
* Extension of the {@link org.springframework.beans.factory.support.GenericBeanDefinition}
* class, adding support for annotation metadata exposed through the
* {@link AnnotatedBeanDefinition} interface.
*
* This GenericBeanDefinition variant is mainly useful for testing code that expects
* to operate on an AnnotatedBeanDefinition, for example strategy implementations
* in Spring's component scanning support (where the default definition class is
* {@link org.springframework.context.annotation.ScannedGenericBeanDefinition},
* which also implements the AnnotatedBeanDefinition interface).
*
* @author Juergen Hoeller
* @author Chris Beams
* @since 2.5
* @see AnnotatedBeanDefinition#getMetadata()
* @see org.springframework.core.type.StandardAnnotationMetadata
*/
@SuppressWarnings("serial")
public class AnnotatedGenericBeanDefinition extends GenericBeanDefinition implements AnnotatedBeanDefinition {
private final AnnotationMetadata metadata;
@Nullable
private MethodMetadata factoryMethodMetadata;
/**
* Create a new AnnotatedGenericBeanDefinition for the given bean class.
* @param beanClass the loaded bean class
*/
public AnnotatedGenericBeanDefinition(Class beanClass) {
setBeanClass(beanClass);
this.metadata = AnnotationMetadata.introspect(beanClass);
}
/**
* Create a new AnnotatedGenericBeanDefinition for the given annotation metadata,
* allowing for ASM-based processing and avoidance of early loading of the bean class.
* Note that this constructor is functionally equivalent to
* {@link org.springframework.context.annotation.ScannedGenericBeanDefinition
* ScannedGenericBeanDefinition}, however the semantics of the latter indicate that a
* bean was discovered specifically via component-scanning as opposed to other means.
* @param metadata the annotation metadata for the bean class in question
* @since 3.1.1
*/
public AnnotatedGenericBeanDefinition(AnnotationMetadata metadata) {
Assert.notNull(metadata, "AnnotationMetadata must not be null");
if (metadata instanceof StandardAnnotationMetadata) {
setBeanClass(((StandardAnnotationMetadata) metadata).getIntrospectedClass());
}
else {
setBeanClassName(metadata.getClassName());
}
this.metadata = metadata;
}
/**
* Create a new AnnotatedGenericBeanDefinition for the given annotation metadata,
* based on an annotated class and a factory method on that class.
* @param metadata the annotation metadata for the bean class in question
* @param factoryMethodMetadata metadata for the selected factory method
* @since 4.1.1
*/
public AnnotatedGenericBeanDefinition(AnnotationMetadata metadata, MethodMetadata factoryMethodMetadata) {
this(metadata);
Assert.notNull(factoryMethodMetadata, "MethodMetadata must not be null");
setFactoryMethodName(factoryMethodMetadata.getMethodName());
this.factoryMethodMetadata = factoryMethodMetadata;
}
@Override
public final AnnotationMetadata getMetadata() {
return this.metadata;
}
@Override
@Nullable
public final MethodMetadata getFactoryMethodMetadata() {
return this.factoryMethodMetadata;
}
}