Proxifier.java

/***
 * Copyright (c) 2009 Caelum - www.caelum.com.br/opensource
 * All rights reserved.
 *
 * 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 br.com.caelum.vraptor.proxy;

/**
 * Implementations of this interface are used to create Proxy instances whenever needed.
 *
 * @author Fabio Kung
 */
public interface Proxifier {

	/**
	 * Creates a proxy for class defined in type parameter.
	 *
	 * @param type The proxy type.
	 * @param handler Callback for method invocation.
	 * @return The proxy.
	 */
	<T> T proxify(Class<T> type, MethodInvocation<? super T> handler);

	/**
	 * Return <code>true</code> if the object is a proxy, false otherwise. <code>null</code> objects always return
	 * <code>false</code>.
	 *
	 * @param o The object to test
	 * @return <code>true</code> if the object is a proxy, false otherwise.
	 */
	boolean isProxy(Object o);

	/**
	 * Return <code>true</code> if the type is a proxy, false otherwise.
	 *
	 * @param type Type to test
	 * @return <code>true</code> if the object is a proxy, false otherwise.
	 */
	boolean isProxyType(Class<?> type);
}