alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Hibernate example source code file (UUIDGenerationStrategy.java)

This example Hibernate source code file (UUIDGenerationStrategy.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

io, serializable, serializable, util, uuid, uuid, uuidgenerationstrategy, uuidgenerationstrategy

The Hibernate UUIDGenerationStrategy.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.UUID;
import org.hibernate.engine.spi.SessionImplementor;

/**
 * A strategy for generating a variant 2 {@link UUID} value.
 *
 * @author Steve Ebersole
 */
public interface UUIDGenerationStrategy extends Serializable {
	/**
	 * Which variant, according to IETF RFC 4122, of UUID does this strategy generate?  RFC 4122 defines
	 * 5 variants (though it only describes algorithms to generate 4):<ul>
	 * <li>1 = time based
	 * <li>2 = DCE based using POSIX UIDs
	 * <li>3 = name based (md5 hash)
	 * <li>4 = random numbers based
	 * <li>5 = name based (sha-1 hash)
	 * </ul>
	 * Returning the values above should be reserved to those generators creating variants compliant with the
	 * corresponding RFC definition; others can feel free to return other values as they see fit.
	 * <p/>
	 * Informational only, and not used at this time.
	 *
	 * @return The supported generation version
	 */
	public int getGeneratedVersion();

	/**
	 * Generate the UUID.
	 *
	 * @param session The session asking for the generation
	 *
	 * @return The generated UUID.
	 */
	public UUID generateUUID(SessionImplementor session);

}

Other Hibernate examples (source code examples)

Here is a short list of links related to this Hibernate UUIDGenerationStrategy.java source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.