/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2010, Red Hat Inc. or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Inc.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * 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 Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.hibernate.id;

import java.io.Serializable;
import java.util.Properties;

import org.hibernate.dialect.Dialect;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.internal.CoreMessageLogger;
import org.hibernate.internal.util.config.ConfigurationHelper;
import org.hibernate.type.Type;

import org.jboss.logging.Logger;

uuid

A UUIDGenerator that returns a string of length 32, This string will consist of only hex digits. Optionally, the string may be generated with separators between each component of the UUID. Mapping parameters supported: separator.
Author:Gavin King
/** * <b>uuid</b><br> * <br> * A <tt>UUIDGenerator</tt> that returns a string of length 32, * This string will consist of only hex digits. Optionally, * the string may be generated with separators between each * component of the UUID. * * Mapping parameters supported: separator. * * @author Gavin King */
public class UUIDHexGenerator extends AbstractUUIDGenerator implements Configurable { private static final CoreMessageLogger LOG = Logger.getMessageLogger(CoreMessageLogger.class, UUIDHexGenerator.class.getName()); private static boolean WARNED; private String sep = ""; public UUIDHexGenerator() { if ( !WARNED ) { WARNED = true; LOG.usingUuidHexGenerator( this.getClass().getName(), UUIDGenerator.class.getName() ); } } @Override public void configure(Type type, Properties params, Dialect d) { sep = ConfigurationHelper.getString( "separator", params, "" ); } @Override public Serializable generate(SessionImplementor session, Object obj) { return format( getIP() ) + sep + format( getJVM() ) + sep + format( getHiTime() ) + sep + format( getLoTime() ) + sep + format( getCount() ); } protected String format(int intValue) { String formatted = Integer.toHexString( intValue ); StringBuilder buf = new StringBuilder( "00000000" ); buf.replace( 8 - formatted.length(), 8, formatted ); return buf.toString(); } protected String format(short shortValue) { String formatted = Integer.toHexString( shortValue ); StringBuilder buf = new StringBuilder( "0000" ); buf.replace( 4 - formatted.length(), 4, formatted ); return buf.toString(); } }