/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Copyright 2006-2008 Sun Microsystems, Inc.
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* Portions copyright 2013 ForgeRock AS
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*/
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package org.opends.server.replication.server.changelog.api;
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import java.util.Comparator;
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import org.opends.server.replication.common.ChangeNumber;
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/**
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* This class defines a {@link Comparator} that allows to know which
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* {@link ReplicaDBCursor} contain the next {@link UpdateMsg} in the order
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* defined by the {@link ChangeNumber} of the {@link UpdateMsg}.
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*/
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public class ReplicaDBCursorComparator implements Comparator<ReplicaDBCursor>
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{
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/**
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* Compare the {@link ChangeNumber} of the {@link ReplicaDBCursor}.
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*
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* @param o1
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* first cursor.
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* @param o2
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* second cursor.
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* @return result of the comparison.
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*/
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@Override
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public int compare(ReplicaDBCursor o1, ReplicaDBCursor o2)
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{
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ChangeNumber csn1 = o1.getChange().getChangeNumber();
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ChangeNumber csn2 = o2.getChange().getChangeNumber();
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return ChangeNumber.compare(csn1, csn2);
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}
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}
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