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/*
* Copyright (c) 2012 the original author or authors.
*
* Licensed 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 org.eclipse.jetty.spdy.api;
/**
* <p>A callback abstraction that handles completed/failed events of asynchronous operations.</p>
* <p>Instances of this class capture a context that is made available on the completion callback.</p>
*
* @param <C> the type of the context object
*/
public interface Handler<C>
{
/**
* <p>Callback invoked when the operation completes.</p>
*
* @param context the context
* @see #failed(Object, Throwable)
*/
public abstract void completed(C context);
/**
* <p>Callback invoked when the operation fails.</p>
* @param context the context
* @param x the reason for the operation failure
*/
public void failed(C context, Throwable x);
/**
* <p>Empty implementation of {@link Handler}</p>
*
* @param <C> the type of the context object
*/
public static class Adapter<C> implements Handler<C>
{
@Override
public void completed(C context)
{
}
@Override
public void failed(C context, Throwable x)
{
}
}
}
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