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/*
 * Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

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);
    }
}