treenodeentry.java

High performance DB query

/*
 * @(#)$Id: TreeNodeEntry.java,v 1.1 2005/07/10 16:42:39 huebsch Exp $
 *
 * Copyright (c) 2001-2004 Regents of the University of California.
 * All rights reserved.
 *
 * This file is distributed under the terms in the attached BERKELEY-LICENSE
 * file. If you do not find these files, copies can be found by writing to:
 * Computer Science Division, Database Group, Universite of California,
 * 617 Soda Hall #1776, Berkeley, CA 94720-1776. Attention: Berkeley License
 *
 * Copyright (c) 2003-2004 Intel Corporation. All rights reserved.
 *
 * This file is distributed under the terms in the attached INTEL-LICENSE file.
 * If you do not find these files, copies can be found by writing to:
 * Intel Research Berkeley, 2150 Shattuck Avenue, Suite 1300,
 * Berkeley, CA, 94704.  Attention:  Intel License Inquiry.
 */


package pier.helpers.trees;

import java.net.InetSocketAddress;
import services.LocalNode;
import util.BitID;

/**
 * Class Expression
 */
public class TreeNodeEntry {

    protected BitID id;
    protected InetSocketAddress socketAddress;
    protected int advertisedSlots;
    protected long insertionTime;
    protected long deletionTime;
    protected long lastSendTime;

    /**
     * Constructor TreeNodeEntry
     *
     * @param id
     * @param socketAddress
     * @param advertisedSlots
     * @param lifetime
     */
    public TreeNodeEntry(BitID id, InetSocketAddress socketAddress,
                         int advertisedSlots, long lifetime) {
        this.id = id;
        this.socketAddress = socketAddress;
        this.advertisedSlots = advertisedSlots;

        long currentTime = LocalNode.myTimer.getCurrentTimeMS();

        this.insertionTime = currentTime;
        this.deletionTime = currentTime + lifetime;
        this.lastSendTime = 0;
    }

    /**
     * Method updateLifetime
     *
     * @param advertisedSlots
     * @param lifetime
     */
    protected void updateLifetime(int advertisedSlots, long lifetime) {
        long currentTime = LocalNode.myTimer.getCurrentTimeMS();

        this.advertisedSlots = advertisedSlots;
        this.deletionTime = currentTime + lifetime;
    }

    /**
     * Method decrementSlots
     */
    protected void decrementSlots() {
        advertisedSlots--;
    }

    /**
     * Method updateLastSendTime
     */
    protected void updateLastSendTime() {
        long currentTime = LocalNode.myTimer.getCurrentTimeMS();

        this.lastSendTime = currentTime;
    }

    /**
     * Method getID
     * @return
     */
    public BitID getID() {
        return id;
    }

    /**
     * Method getSocketAddress
     * @return
     */
    public InetSocketAddress getSocketAddress() {
        return socketAddress;
    }

    /**
     * Method getAdvertisedSlots
     * @return
     */
    protected int getAdvertisedSlots() {
        return advertisedSlots;
    }

    /**
     * Method getInsertionTime
     * @return
     */
    protected long getInsertionTime() {
        return insertionTime;
    }

    /**
     * Method getDeletionTime
     * @return
     */
    protected long getDeletionTime() {
        return deletionTime;
    }

    /**
     * Method getLastSendTime
     * @return
     */
    protected long getLastSendTime() {
        return lastSendTime;
    }

    /**
     * Method toString
     * @return
     */
    public String toString() {
        return "<TreeEntry: ID:" + id + ", ADDR:" + socketAddress + ", SLOTS:"
               + advertisedSlots + ", LAST:" + lastSendTime + ", INS:"
               + insertionTime + ", DEL:" + deletionTime + ">";
    }
}