/*
 * Copyright (C) 2000-2013 Heinz Max Kabutz
 *
 * See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.  Heinz Max Kabutz licenses
 * this file to you 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 eu.javaspecialists.tjsn.util.proxy;

import java.lang.reflect.*;

public class VirtualDynamicProxyNotThreadSafe
        implements InvocationHandler {
    private final Class realSubjectClass;
    private Object realSubject;

    public VirtualDynamicProxyNotThreadSafe(Class realSubjectClass) {
        this.realSubjectClass = realSubjectClass;
    }

    private Object realSubject() throws Exception {
        if (realSubject == null) {
            realSubject = realSubjectClass.newInstance();
        }
        return realSubject;
    }

    public Object invoke(
            Object proxy, Method method, Object[] args)
            throws Throwable {
        return method.invoke(realSubject(), args);
    }
}