treedetails.java

High performance DB query

/*
 * @(#)$Id: TreeDetails.java,v 1.1 2005/07/21 20:36:04 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 services.network.Payload;
import util.BitID;
import util.network.serialization.GenericByteBuffer;
import util.network.serialization.SerializationManager;

/**
 * Class Expression
 */
public class TreeDetails {

    public static long serialVersionUID =
        SerializationManager.getSerialUID("pier.helpers.trees.TreeDetails");
    protected BitID rootID;
    protected int maxChildren;
    protected double advertiseChildrenFraction;
    protected long upstreamRenewPeriod;
    protected long upstreamLifetime;

    /**
     * Constructor TreeMessage
     *
     * @param inputBuffer
     */
    public TreeDetails(GenericByteBuffer inputBuffer) {
        this.rootID = new BitID(inputBuffer);
        this.maxChildren = inputBuffer.getInt();
        this.advertiseChildrenFraction = inputBuffer.getDouble();
        this.upstreamRenewPeriod = inputBuffer.getLong();
        this.upstreamLifetime = inputBuffer.getLong();
    }

    /**
     * Method serialize
     *
     * @param outputBuffer
     * @return
     */
    public long serialize(GenericByteBuffer outputBuffer) {
        rootID.serialize(outputBuffer);
        outputBuffer.putInt(maxChildren);
        outputBuffer.putDouble(advertiseChildrenFraction);
        outputBuffer.putLong(upstreamRenewPeriod);
        outputBuffer.putLong(upstreamLifetime);

        return serialVersionUID;
    }

    /**
     * Constructor TreeDetails
     *
     * @param rootID
     * @param maxChildren
     * @param advertiseChildrenFraction
     * @param upstreamRenewPeriod
     * @param upstreamLifetime
     */
    public TreeDetails(BitID rootID, int maxChildren,
                       double advertiseChildrenFraction,
                       long upstreamRenewPeriod, long upstreamLifetime) {
        this.rootID = rootID;
        this.maxChildren = maxChildren;
        this.advertiseChildrenFraction = advertiseChildrenFraction;
        this.upstreamRenewPeriod = upstreamRenewPeriod;
        this.upstreamLifetime = upstreamLifetime;
    }

    /**
     * Method getRootID
     * @return
     */
    public BitID getRootID() {
        return rootID;
    }

    /**
     * Method getMaxChildren
     * @return
     */
    public int getMaxChildren() {
        return maxChildren;
    }

    /**
     * Method getAdvertiseChildrenFraction
     * @return
     */
    public double getAdvertiseChildrenFraction() {
        return advertiseChildrenFraction;
    }

    /**
     * Method getUpstreamRenewPeriod
     * @return
     */
    public long getUpstreamRenewPeriod() {
        return upstreamRenewPeriod;
    }

    /**
     * Method getUpstreamLifetime
     * @return
     */
    public long getUpstreamLifetime() {
        return upstreamLifetime;
    }

    /**
     * Method getSize
     * @return
     */
    public int getSize() {
        int size = Payload.INT_SIZE + Payload.DOUBLE_SIZE + Payload.LONG_SIZE
                   + Payload.LONG_SIZE;

        if (rootID != null) {
            size += rootID.getSize();
        }

        return size;
    }
}