Spring Framework example source code file (MethodOverrides.java)

This example Spring Framework source code file (MethodOverrides.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

hashset, iterator, iterator, methodoverride, methodoverride, methodoverrides, methodoverrides, reflection, set, set, util

The Spring Framework MethodOverrides.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.support;

import java.lang.reflect.Method;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

/**
 * Set of method overrides, determining which, if any, methods on a
 * managed object the Spring IoC container will override at runtime.
 *
 * <p>The currently supported {@link MethodOverride} variants are
 * {@link LookupOverride} and {@link ReplaceOverride}.
 *
 * @author Rod Johnson
 * @author Juergen Hoeller
 * @since 1.1
 * @see MethodOverride
 */
public class MethodOverrides {

	private final Set overrides = new HashSet();


	/**
	 * Create new MethodOverrides.
	 */
	public MethodOverrides() {
	}

	/**
	 * Deep copy constructor.
	 */
	public MethodOverrides(MethodOverrides other) {
		addOverrides(other);
	}


	/**
	 * Copy all given method overrides into this object.
	 */
	public void addOverrides(MethodOverrides other) {
		if (other != null) {
			this.overrides.addAll(other.getOverrides());
		}
	}

	/**
	 * Add the given method override.
	 */
	public void addOverride(MethodOverride override) {
		this.overrides.add(override);
	}

	/**
	 * Return all method overrides contained by this object.
	 * @return Set of MethodOverride objects
	 * @see MethodOverride
	 */
	public Set getOverrides() {
		return this.overrides;
	}

	/**
	 * Return whether the set of method overrides is empty.
	 */
	public boolean isEmpty() {
		return this.overrides.isEmpty();
	}
	
	/**
	 * Return the override for the given method, if any.
	 * @param method method to check for overrides for
	 * @return the method override, or <code>null if none
	 */
	public MethodOverride getOverride(Method method) {
		for (Iterator it = this.overrides.iterator(); it.hasNext();) {
			MethodOverride methodOverride = (MethodOverride) it.next();
			if (methodOverride.matches(method)) {
				return methodOverride;
			}			
		}
		return null;
	}

	public boolean equals(Object o) {
		if (this == o) return true;
		if (o == null || getClass() != o.getClass()) return false;

		MethodOverrides that = (MethodOverrides) o;

		if (!this.overrides.equals(that.overrides)) return false;

		return true;
	}

	public int hashCode() {
		return this.overrides.hashCode();
	}

}