/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
 * identifying information: "Portions Copyrighted [year]
 * [name of copyright owner]"
 * 
 * Contributor(s):
 * 
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
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 */

/*
 * Copyright 2004-2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

package com.sun.enterprise.admin.util.proxy;

import java.lang.reflect.Proxy;

/**
 *
 */
public class ProxyFactory {
    
    /** Creates a new instance of ProxyFactory */
    private ProxyFactory() {
    }

    public static Object createProxy(Class intfc, Object handler,
            Interceptor interceptor) {
        if (!intfc.isInterface()) {
            throw new IllegalArgumentException(intfc.getClass()
                    + " is not an interface");
        }
        if (!isImplementing(intfc, handler)) {
            throw new IllegalArgumentException("Handler object " + handler
                    + " is not an instance of " + intfc.getName());
        }
        Object obj = Proxy.newProxyInstance(
                handler.getClass().getClassLoader(),
                new Class[] {intfc},
                new ProxyClass(handler, interceptor));
        return obj;
    }

    private static boolean isImplementing(Class intfc, Object obj) {
        return intfc.isInstance(obj);
    }
}