org.springframework.context.annotation.ScannedGenericBeanDefinition.java Source code

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Here is the source code for org.springframework.context.annotation.ScannedGenericBeanDefinition.java

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/*
 * Copyright 2002-2014 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.context.annotation;

import org.springframework.beans.factory.annotation.AnnotatedBeanDefinition;
import org.springframework.beans.factory.annotation.AnnotatedGenericBeanDefinition;
import org.springframework.beans.factory.support.GenericBeanDefinition;
import org.springframework.core.type.AnnotationMetadata;
import org.springframework.core.type.MethodMetadata;
import org.springframework.core.type.classreading.MetadataReader;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;

/**
 * Extension of the {@link org.springframework.beans.factory.support.GenericBeanDefinition}
 * class, based on an ASM ClassReader, with support for annotation metadata exposed
 * through the {@link AnnotatedBeanDefinition} interface.
 *
 * <p>This class does <i>not</i> load the bean {@code Class} early.
 * It rather retrieves all relevant metadata from the ".class" file itself,
 * parsed with the ASM ClassReader. It is functionally equivalent to
 * {@link AnnotatedGenericBeanDefinition#AnnotatedGenericBeanDefinition(AnnotationMetadata)}
 * but distinguishes by type beans that have been <em>scanned</em> vs those that have
 * been otherwise registered or detected by other means.
 *
 * @author Juergen Hoeller
 * @author Chris Beams
 * @since 2.5
 * @see #getMetadata()
 * @see #getBeanClassName()
 * @see org.springframework.core.type.classreading.MetadataReaderFactory
 * @see AnnotatedGenericBeanDefinition
 */
@SuppressWarnings("serial")
public class ScannedGenericBeanDefinition extends GenericBeanDefinition implements AnnotatedBeanDefinition {

    private final AnnotationMetadata metadata;

    /**
     * Create a new ScannedGenericBeanDefinition for the class that the
     * given MetadataReader describes.
     * @param metadataReader the MetadataReader for the scanned target class
     */
    public ScannedGenericBeanDefinition(MetadataReader metadataReader) {
        Assert.notNull(metadataReader, "MetadataReader must not be null");
        this.metadata = metadataReader.getAnnotationMetadata();
        setBeanClassName(this.metadata.getClassName());
    }

    @Override
    public final AnnotationMetadata getMetadata() {
        return this.metadata;
    }

    @Override
    @Nullable
    public MethodMetadata getFactoryMethodMetadata() {
        return null;
    }

}