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/*
 * File: AbstractDeferred.java
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * The contents of this file are subject to the terms and conditions of 
 * the Common Development and Distribution License 1.0 (the "License").
 *
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the License by consulting the LICENSE.txt file
 * distributed with this file, or by consulting https://oss.oracle.com/licenses/CDDL
 *
 * 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 LICENSE.txt.
 *
 * MODIFICATIONS:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 */

package com.oracle.tools.deferred;

import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.lang.reflect.TypeVariable;

/**
 * A base implementation of a {@link Deferred}.
 * 
 * Copyright (c) 2014. All Rights Reserved. Oracle Corporation.

 * Oracle is a registered trademark of Oracle Corporation and/or its affiliates.
 *
 * @author Brian Oliver
 */
public abstract class AbstractDeferred implements Deferred
{
    @Override
    public Class getDeferredClass()
    {
        Class clazz = this.getClass();

        Type     type  = clazz.getGenericSuperclass();

        if (type instanceof ParameterizedType)
        {
            return (Class)((ParameterizedType)type).getActualTypeArguments()[0];
        }
        else
        {
            throw new RuntimeException("Can determine the type of the DeferredClass: " + this);
        }
    }
}