serializeinetaddress.java

High performance DB query

/*
 * @(#)$Id: SerializeInetAddress.java,v 1.6 2004/07/02 23:59:22 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 util.network.serialization;

import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 * Class SerializeInetAddress
 *
 */
public class SerializeInetAddress {

    public static final byte[] NULL_VALUE = {0, 0, 0, 0};

    /**
     * Method serialize
     *
     * @param outputBuffer
     * @param value
     */
    public static void serialize(GenericByteBuffer outputBuffer,
                                 InetAddress value) {
        byte theData[] = null;

        if (value == null) {
            theData = NULL_VALUE;
        } else {
            theData = value.getAddress();
        }

        for (int i = 0; i < theData.length; i++) {
            outputBuffer.put(theData[i]);
        }
    }

    /**
     * Method serializeHostname
     *
     * @param outputBuffer
     * @param value
     */
    public static void serializeHostname(GenericByteBuffer outputBuffer,
                                         InetAddress value) {
        if (value == null) {
            SerializeString.serializeUTF8(outputBuffer, null);
        } else {
            SerializeString.serializeUTF8(outputBuffer,
                                          value.getCanonicalHostName());
        }
    }

    /**
     * Method deSerialize
     *
     * @param inputBuffer
     * @param bytes
     * @return
     */
    public static InetAddress deSerialize(GenericByteBuffer inputBuffer,
                                          int bytes) {
        byte theData[] = new byte[bytes];

        for (int i = 0; i < bytes; i++) {
            theData[i] = inputBuffer.get();
        }

        if (theData == NULL_VALUE) {
            return null;
        }

        try {
            return InetAddress.getByAddress(theData);
        } catch (UnknownHostException exception) {
            throw new RuntimeException(
                "SerializationManager: Unable to deserialize InetAddress:"
                + theData + ", ERROR:" + exception.getClass().getName() + ": "
                + exception.getMessage());
        }
    }

    /**
     * Method deSerializeHostname
     *
     * @param inputBuffer
     * @return
     */
    public static InetAddress deSerializeHostname(
            GenericByteBuffer inputBuffer) {
        String theData = SerializeString.deSerializeUTF8(inputBuffer);

        try {
            return InetAddress.getByName(theData);
        } catch (UnknownHostException exception) {
            throw new RuntimeException(
                "SerializationManager: Unable to deserialize InetAddress:"
                + theData + ", ERROR:" + exception.getClass().getName() + ": "
                + exception.getMessage());
        }
    }
}