001    /*
002     * CDDL HEADER START
003     *
004     * The contents of this file are subject to the terms of the
005     * Common Development and Distribution License, Version 1.0 only
006     * (the "License").  You may not use this file except in compliance
007     * with the License.
008     *
009     * You can obtain a copy of the license at
010     * trunk/opends/resource/legal-notices/OpenDS.LICENSE
011     * or https://OpenDS.dev.java.net/OpenDS.LICENSE.
012     * See the License for the specific language governing permissions
013     * and limitations under the License.
014     *
015     * When distributing Covered Code, include this CDDL HEADER in each
016     * file and include the License file at
017     * trunk/opends/resource/legal-notices/OpenDS.LICENSE.  If applicable,
018     * add the following below this CDDL HEADER, with the fields enclosed
019     * by brackets "[]" replaced with your own identifying information:
020     *      Portions Copyright [yyyy] [name of copyright owner]
021     *
022     * CDDL HEADER END
023     *
024     *
025     *      Copyright 2006-2008 Sun Microsystems, Inc.
026     */
027    package org.opends.server.replication.protocol;
028    
029    
030    /**
031     * The version utility class for the replication protocol.
032     */
033    public class ProtocolVersion
034    {
035      /**
036       * Get the version included in the Start Message mean the replication
037       * protocol version used by the server that created the message.
038       *
039       * @return The version used by the server that created the message.
040       */
041      static short CURRENT_VERSION = 1;
042    
043      /**
044       * Specifies the current version of the replication protocol.
045       *
046       * @return The current version of the protocol.
047       */
048      public static short currentVersion()
049      {
050        return CURRENT_VERSION;
051      }
052    
053      /**
054       * For test purpose.
055       * @param currentVersion The provided current version.
056       */
057      public static void setCurrentVersion(short currentVersion)
058      {
059        CURRENT_VERSION = currentVersion;
060      }
061    
062      /**
063       * Specifies the oldest version of the protocol from the provided one
064       * and the current one.
065       *
066       * @param version The version to be compared to the current one.
067       * @return The minimal protocol version.
068       */
069      public static short minWithCurrent(short version)
070      {
071        Short sVersion = Short.valueOf(version);
072        Short newVersion = (sVersion<CURRENT_VERSION?sVersion:CURRENT_VERSION);
073        return newVersion;
074      }
075    }
076