com.comphenix.protocol.async.PacketEventHolder.java Source code

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Here is the source code for com.comphenix.protocol.async.PacketEventHolder.java

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/*
 *  ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
 *  Copyright (C) 2012 Kristian S. Stangeland
 *
 *  This program is free software; you can redistribute it and/or modify it under the terms of the 
 *  GNU General Public License as published by the Free Software Foundation; either version 2 of 
 *  the License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
 *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
 *  See the GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along with this program; 
 *  if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 
 *  02111-1307 USA
 */

package com.comphenix.protocol.async;

import com.comphenix.protocol.events.PacketEvent;
import com.google.common.base.Preconditions;
import com.google.common.collect.ComparisonChain;
import com.google.common.primitives.Longs;

/**
 * Provides a comparable to a packet event.
 * 
 * @author Kristian
 */
class PacketEventHolder implements Comparable<PacketEventHolder> {

    private PacketEvent event;
    private long sendingIndex = 0;

    /**
     * A wrapper that ensures the packet event is ordered by sending index.
     * @param event - packet event to wrap.
     */
    public PacketEventHolder(PacketEvent event) {
        this.event = Preconditions.checkNotNull(event, "Event must be non-null");

        if (event.getAsyncMarker() != null)
            this.sendingIndex = event.getAsyncMarker().getNewSendingIndex();
    }

    /**
     * Retrieve the stored event.
     * @return The stored event.
     */
    public PacketEvent getEvent() {
        return event;
    }

    @Override
    public int compareTo(PacketEventHolder other) {
        return ComparisonChain.start().compare(sendingIndex, other.sendingIndex).result();
    }

    @Override
    public boolean equals(Object other) {
        // Standard equals
        if (other == this)
            return true;
        if (other instanceof PacketEventHolder)
            return sendingIndex == ((PacketEventHolder) other).sendingIndex;
        else
            return false;
    }

    @Override
    public int hashCode() {
        return Longs.hashCode(sendingIndex);
    }
}