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Hibernate example source code file (UUIDHexGenerator.java)

This example Hibernate source code file (UUIDHexGenerator.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Hibernate tags/keywords

abstractuuidgenerator, configurable, coremessagelogger, dialect, io, log, object, object, serializable, string, string, stringbuffer, stringbuffer, util, uuidhexgenerator, uuidhexgenerator

The Hibernate UUIDHexGenerator.java source code

/*
 * 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.engine.spi.SessionImplementor;
import org.hibernate.internal.CoreMessageLogger;
import org.hibernate.dialect.Dialect;
import org.hibernate.internal.util.config.ConfigurationHelper;
import org.hibernate.type.Type;
import org.jboss.logging.Logger;

/**
 * <b>uuid
* <br> * A <tt>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 */ public class UUIDHexGenerator extends AbstractUUIDGenerator implements Configurable { private static final CoreMessageLogger LOG = Logger.getMessageLogger(CoreMessageLogger.class, UUIDHexGenerator.class.getName()); private static boolean warned = false; private String sep = ""; public UUIDHexGenerator() { if ( ! warned ) { warned = true; LOG.usingUuidHexGenerator(this.getClass().getName(), UUIDGenerator.class.getName()); } } /** * {@inheritDoc} */ public void configure(Type type, Properties params, Dialect d) { sep = ConfigurationHelper.getString( "separator", params, "" ); } /** * {@inheritDoc} */ public Serializable generate(SessionImplementor session, Object obj) { return new StringBuffer( 36 ) .append( format( getIP() ) ).append( sep ) .append( format( getJVM() ) ).append( sep ) .append( format( getHiTime() ) ).append( sep ) .append( format( getLoTime() ) ).append( sep ) .append( format( getCount() ) ) .toString(); } protected String format(int intValue) { String formatted = Integer.toHexString( intValue ); StringBuffer buf = new StringBuffer( "00000000" ); buf.replace( 8 - formatted.length(), 8, formatted ); return buf.toString(); } protected String format(short shortValue) { String formatted = Integer.toHexString( shortValue ); StringBuffer buf = new StringBuffer( "0000" ); buf.replace( 4 - formatted.length(), 4, formatted ); return buf.toString(); } }

Other Hibernate examples (source code examples)

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