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/*
 * Copyright 2002-2017 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 org.springframework.core.AttributeAccessorSupport;
import org.springframework.lang.Nullable;

/**
 * Extension of {@link org.springframework.core.AttributeAccessorSupport},
 * holding attributes as {@link BeanMetadataAttribute} objects in order
 * to keep track of the definition source.
 *
 * @author Juergen Hoeller
 * @since 2.5
 */
@SuppressWarnings("serial")
public class BeanMetadataAttributeAccessor extends AttributeAccessorSupport implements BeanMetadataElement {

	@Nullable
	private Object source;


	/**
	 * Set the configuration source {@code Object} for this metadata element.
	 * 

The exact type of the object will depend on the configuration mechanism used. */ public void setSource(@Nullable Object source) { this.source = source; } @Override @Nullable public Object getSource() { return this.source; } /** * Add the given BeanMetadataAttribute to this accessor's set of attributes. * @param attribute the BeanMetadataAttribute object to register */ public void addMetadataAttribute(BeanMetadataAttribute attribute) { super.setAttribute(attribute.getName(), attribute); } /** * Look up the given BeanMetadataAttribute in this accessor's set of attributes. * @param name the name of the attribute * @return the corresponding BeanMetadataAttribute object, * or {@code null} if no such attribute defined */ @Nullable public BeanMetadataAttribute getMetadataAttribute(String name) { return (BeanMetadataAttribute) super.getAttribute(name); } @Override public void setAttribute(String name, @Nullable Object value) { super.setAttribute(name, new BeanMetadataAttribute(name, value)); } @Override @Nullable public Object getAttribute(String name) { BeanMetadataAttribute attribute = (BeanMetadataAttribute) super.getAttribute(name); return (attribute != null ? attribute.getValue() : null); } @Override @Nullable public Object removeAttribute(String name) { BeanMetadataAttribute attribute = (BeanMetadataAttribute) super.removeAttribute(name); return (attribute != null ? attribute.getValue() : null); } }





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