Spring Framework example source code file (RuntimeBeanReference.java)

This example Spring Framework source code file (RuntimeBeanReference.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

beanreference, beanreference, object, object, runtimebeanreference, runtimebeanreference, string, string

The Spring Framework RuntimeBeanReference.java source code

/*
 * Copyright 2002-2007 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
 *
 *      http://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.config;

import org.springframework.util.Assert;

/** 
 * Immutable placeholder class used for a property value object when it's
 * a reference to another bean in the factory, to be resolved at runtime.
 *
 * @author Rod Johnson
 * @author Juergen Hoeller
 * @see BeanDefinition#getPropertyValues()
 * @see org.springframework.beans.factory.BeanFactory#getBean
 */
public class RuntimeBeanReference implements BeanReference {
	
	private final String beanName;

	private final boolean toParent;

	private Object source;


	/**
	 * Create a new RuntimeBeanReference to the given bean name,
	 * without explicitly marking it as reference to a bean in
	 * the parent factory.
	 * @param beanName name of the target bean
	 */
	public RuntimeBeanReference(String beanName) {
		this(beanName, false);
	}

	/**
	 * Create a new RuntimeBeanReference to the given bean name,
	 * with the option to mark it as reference to a bean in
	 * the parent factory.
	 * @param beanName name of the target bean
	 * @param toParent whether this is an explicit reference to
	 * a bean in the parent factory
	 */
	public RuntimeBeanReference(String beanName, boolean toParent) {
		Assert.hasText(beanName, "'beanName' must not be empty");
		this.beanName = beanName;
		this.toParent = toParent;
	}


	public String getBeanName() {
		return this.beanName;
	}

	/**
	 * Return whether this is an explicit reference to a bean
	 * in the parent factory.
	 */
	public boolean isToParent() {
		return this.toParent;
	}

	/**
	 * Set the configuration source <code>Object for this metadata element.
	 * <p>The exact type of the object will depend on the configuration mechanism used.
	 */
	public void setSource(Object source) {
		this.source = source;
	}

	public Object getSource() {
		return this.source;
	}


	public boolean equals(Object other) {
		if (this == other) {
			return true;
		}
		if (!(other instanceof RuntimeBeanReference)) {
			return false;
		}
		RuntimeBeanReference that = (RuntimeBeanReference) other;
		return (this.beanName.equals(that.beanName) && this.toParent == that.toParent);
	}

	public int hashCode() {
		int result = this.beanName.hashCode();
		result = 29 * result + (this.toParent ? 1 : 0);
		return result;
	}

	public String toString() {
	   return '<' + getBeanName() + '>';
	}

}