/*---------------- FILE HEADER ------------------------------------------
This file is part of deegree.
Copyright (C) 2001-2006 by:
EXSE, Department of Geography, University of Bonn
http://www.giub.uni-bonn.de/deegree/
lat/lon GmbH
http://www.lat-lon.de
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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 library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Contact:
Andreas Poth
lat/lon GmbH
Aennchenstr. 19
53115 Bonn
Germany
E-Mail: poth@lat-lon.de
Prof. Dr. Klaus Greve
Department of Geography
University of Bonn
Meckenheimer Allee 166
53115 Bonn
Germany
E-Mail: greve@giub.uni-bonn.de
----------------------------------------------------------------------------*/
package org.deegree.framework.util;
/**
* Produces unique IDs (used to generate Request-IDs, for example).
* <p>
* @author <a href="mailto:mschneider@lat-lon.de">Markus Schneider</a>
* @version $Revision: 1.8 $ $Date: 2006/11/02 10:17:05 $
*/
public class IDGenerator {
/**
* The only instance of this class.
*/
private static IDGenerator instance = null;
/** The current ID. */
private long id = 0;
/**
* Returns the only instance of this class.
* @return the only instance of IDGenerator
*
*/
synchronized public static IDGenerator getInstance() {
if (instance == null)
instance = new IDGenerator();
return instance;
}
/**
* Generates a completly unique ID.
* @return a unique ID
*/
synchronized public long generateUniqueID () {
return id++;
}
}
/* ********************************************************************
Changes to this class. What the people have been up to:
$Log: IDGenerator.java,v $
Revision 1.8 2006/11/02 10:17:05 mschneider
Fixed indentation.
Revision 1.7 2006/07/12 14:46:17 poth
comment footer added
********************************************************************** */