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OpenCms is an enterprise-ready, easy to use website content management system based on Java and XML technology. Offering a complete set of features, OpenCms helps content managers worldwide to create and maintain beautiful websites fast and efficiently.
/*
* This library is part of OpenCms -
* the Open Source Content Management System
*
* Copyright (c) Alkacon Software GmbH & Co. KG (http://www.alkacon.com)
*
* 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.
*
* For further information about Alkacon Software GmbH & Co. KG, please see the
* company website: http://www.alkacon.com
*
* For further information about OpenCms, please see the
* project website: http://www.opencms.org
*
* 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
*/
package org.opencms.module;
import org.opencms.main.CmsIllegalArgumentException;
import org.opencms.main.CmsRuntimeException;
import org.opencms.util.CmsStringUtil;
/**
* A version number for an OpenCms module.
*
* A module version number has the form n1.n2.n3.n4
.
* Only n1
is required, n2 - n4
are optional.
*
* The valid range for each n
is 0 - 999.
* Examples for valid version numbers are 0.9
, 1.0.0.5
* or 5
.
* The maximum version number is 999.999.999.999
.
*
* The comparison is started with n1
being the most important value,
* followed by n2 - n4
.
* For example 5.0.0.1 > 4.999.999.999
since 5 > 4
.
*
* For any n1 - n4
, if n > 0
leading zeros are ignored.
* So 001.002.004.004 = 1.2.3.4
. Unrequired leading zeros are automatically
* stripped from version numbers.
*
* @since 6.0.0
*/
public class CmsModuleVersion implements Comparable
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