jdisc_core/src/main/java/com/yahoo/jdisc/handler/CallableRequestDispatch.java


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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.handler;

import com.yahoo.jdisc.Response;

import java.util.concurrent.Callable;

/**
 * <p>This is a convenient subclass of {@link RequestDispatch} that implements the {@link Callable} interface. This
 * should be used in place of {@link RequestDispatch} if you intend to schedule its execution. Because {@link #call()}
 * does not return until a {@link Response} becomes available, you can use the <tt>Future</tt> return value of
 * <tt>ExecutorService.submit(Callable)</tt> to wait for it.</p>
 *
 * @author <a href="mailto:simon@yahoo-inc.com">Simon Thoresen Hult</a>
 */
public abstract class CallableRequestDispatch extends RequestDispatch implements Callable<Response> {

    @Override
    public final Response call() throws Exception {
        return dispatch().get();
    }
}