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Java example source code file (FailedChannelFuture.java)

This example Java source code file (FailedChannelFuture.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

channelfuture, completechannelfuture, eventexecutor, failedchannelfuture, nullpointerexception, override, throwable

The FailedChannelFuture.java Java example source code

/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project 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 io.netty.channel;

import io.netty.util.concurrent.EventExecutor;
import io.netty.util.internal.PlatformDependent;

/**
 * The {@link CompleteChannelFuture} which is failed already.  It is
 * recommended to use {@link Channel#newFailedFuture(Throwable)}
 * instead of calling the constructor of this future.
 */
final class FailedChannelFuture extends CompleteChannelFuture {

    private final Throwable cause;

    /**
     * Creates a new instance.
     *
     * @param channel the {@link Channel} associated with this future
     * @param cause   the cause of failure
     */
    FailedChannelFuture(Channel channel, EventExecutor executor, Throwable cause) {
        super(channel, executor);
        if (cause == null) {
            throw new NullPointerException("cause");
        }
        this.cause = cause;
    }

    @Override
    public Throwable cause() {
        return cause;
    }

    @Override
    public boolean isSuccess() {
        return false;
    }

    @Override
    public ChannelFuture sync() {
        PlatformDependent.throwException(cause);
        return this;
    }

    @Override
    public ChannelFuture syncUninterruptibly() {
        PlatformDependent.throwException(cause);
        return this;
    }
}

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