org.openmdx.kernel.id.plugin.TimeBasedUUIDGeneratorUsingRandomBasedNode Maven / Gradle / Ivy
/*
* ====================================================================
* Project: openMDX, http://www.openmdx.org/
* Description: Random Based UUID Provider
* Owner: OMEX AG, Switzerland, http://www.omex.ch
* ====================================================================
*
* This software is published under the BSD license as listed below.
*
* Copyright (c) 2004-2005, OMEX AG, Switzerland
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of the openMDX team nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* ------------------
*
* This product includes software developed by the Apache Software
* Foundation (http://www.apache.org/).
*/
package org.openmdx.kernel.id.plugin;
import org.openmdx.kernel.id.cci.UUIDGenerator;
import org.openmdx.kernel.id.spi.TimeBasedIdGenerator;
import java.util.UUID;
/**
* Time Based UUID Provider using Random Based Nodes
*
* This implementation follow the guidelines of
* http://www.ietf.org/internet-drafts/draft-mealling-uuid-urn-03.txt and avoids
* conflicts with TimeBasedUUIDGeneratorUsingInetAddress nodes by clearing/setting
* its IP multicast bits.
*
* @see org.openmdx.kernel.id.plugin.TimeBasedUUIDGeneratorUsingIP4Address
*/
public class TimeBasedUUIDGeneratorUsingRandomBasedNode
extends TimeBasedIdGenerator
implements UUIDGenerator
{
/* (non-Javadoc)
* @see org.openmdx.kernel.id.spi.TimeBasedIdBuilder#getNode()
*/
@Override
protected long getNode() {
return randomBasedNode;
}
//------------------------------------------------------------------------
// Implements UUIDGenerator
//------------------------------------------------------------------------
/* (non-Javadoc)
* @see org.openmdx.kernel.id.cci.UUIDGenerator#next()
*/
public UUID next(
){
return new UUID(
nextMostSignificantBits(),
nextLeastSignificantBits()
);
}
/**
* The node value
*/
private static final long randomBasedNode = createRandomBasedNode();
}