infra.beans.factory.annotation.AnnotatedGenericBeanDefinition Maven / Gradle / Ivy
/*
* Copyright 2017 - 2024 the original author or authors.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see [https://www.gnu.org/licenses/]
*/
package infra.beans.factory.annotation;
import java.io.Serial;
import infra.beans.factory.config.BeanDefinition;
import infra.beans.factory.support.GenericBeanDefinition;
import infra.core.type.AnnotationMetadata;
import infra.core.type.MethodMetadata;
import infra.core.type.StandardAnnotationMetadata;
import infra.lang.Assert;
import infra.lang.Nullable;
/**
* Extension of the {@link BeanDefinition}
* 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 Framework's component scanning support (where the default definition class is
* {@link infra.context.annotation.ScannedGenericBeanDefinition},
* which also implements the AnnotatedBeanDefinition interface).
*
* @author Juergen Hoeller
* @author Chris Beams
* @author Harry Yang
* @see AnnotatedBeanDefinition#getMetadata()
* @see StandardAnnotationMetadata
* @since 4.0 2022/3/8 21:01
*/
public class AnnotatedGenericBeanDefinition extends GenericBeanDefinition implements AnnotatedBeanDefinition {
@Serial
private static final long serialVersionUID = 1L;
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 infra.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
*/
public AnnotatedGenericBeanDefinition(AnnotationMetadata metadata) {
Assert.notNull(metadata, "AnnotationMetadata is required");
if (metadata instanceof StandardAnnotationMetadata sam) {
setBeanClass(sam.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
*/
public AnnotatedGenericBeanDefinition(AnnotationMetadata metadata, MethodMetadata factoryMethodMetadata) {
this(metadata);
Assert.notNull(factoryMethodMetadata, "MethodMetadata is required");
setFactoryMethodName(factoryMethodMetadata.getMethodName());
this.factoryMethodMetadata = factoryMethodMetadata;
}
@Override
public final AnnotationMetadata getMetadata() {
return this.metadata;
}
@Override
@Nullable
public final MethodMetadata getFactoryMethodMetadata() {
return this.factoryMethodMetadata;
}
}