High performance DB query

				/*				 * @(#)$Id: Lookup.java,v 1.9 2004/07/02 23:59:20 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 overlay.location.chord.payload;								import java.net.InetSocketAddress;				import services.network.Payload;				import util.BitID;				import util.FreeList;				import util.FreeListFactory;				import util.network.serialization.GenericByteBuffer;				import util.network.serialization.SerializationManager;								/**				 * Class Lookup				 *				 */				public class Lookup extends ChordMessage {								    public static long serialVersionUID =				        SerializationManager.getSerialUID(				            "overlay.location.chord.payload.Lookup");				    private BitID searchID;				    private long applicationID;				    private static FreeList freeList = new FreeList(new LookupFactory());								    /**				     * DeSerialize the object from the provided GenericByteBuffer.				     *				     * @param inputBuffer				     */				    public Lookup(GenericByteBuffer inputBuffer) {				        super(inputBuffer);								        this.searchID = new BitID(inputBuffer);				        this.applicationID = inputBuffer.getLong();				    }								    /**				     * Serialize the object into the provided GenericByteBuffer.				     *				     * @param outputBuffer				     * @return				     */				    public long serialize(GenericByteBuffer outputBuffer) {				        super.serialize(outputBuffer);				        searchID.serialize(outputBuffer);				        outputBuffer.putLong(applicationID);								        return serialVersionUID;				    }								    /**				     * Constructor Lookup				     */				    protected Lookup() {}								    private void init(int messageID, InetSocketAddress sourceSocketAddress,				                      BitID searchID, long applicationID) {				        super.init(messageID, sourceSocketAddress);								        this.searchID = searchID;				        this.applicationID = applicationID;				    }								    /**				     * Method getSize				     * @return				     */				    public int getSize() {				        return super.getSize() + searchID.getSize() + Payload.LONG_SIZE;				    }								    /**				     * Method getSearchID				     * @return				     */				    public BitID getSearchID() {				        return searchID;				    }								    /**				     * Method getApplicationID				     * @return				     */				    public long getApplicationID() {				        return applicationID;				    }								    /**				     * Method allocate				     *				     * @param messageID				     * @param sourceSocketAddress				     * @param searchID				     * @param applicationID				     * @return				     */				    public static Lookup allocate(int messageID,				                                  InetSocketAddress sourceSocketAddress,				                                  BitID searchID, long applicationID) {				        Lookup message = (Lookup) freeList.allocate();								        message.init(messageID, sourceSocketAddress, searchID, applicationID);								        return message;				    }								    /**				     * Method allocate				     *				     * @param oldMessage				     * @return				     */				    public static Lookup allocate(Lookup oldMessage) {				        Lookup message = (Lookup) freeList.allocate();								        message.init(oldMessage.messageID, oldMessage.sourceSocketAddress,				                     oldMessage.searchID, oldMessage.applicationID);								        return message;				    }								    /**				     * Method free				     *				     * @param message				     */				    public static void free(Lookup message) {				        freeList.free(message);				    }				}												/**				 * Class LookupFactory				 *				 */				class LookupFactory implements FreeListFactory {								    /**				     * Method create				     * @return				     */				    public Object create() {				        return new Lookup();				    }				}