001    package org.apache.archiva.configuration.functors;
002    
003    /*
004     * Licensed to the Apache Software Foundation (ASF) under one
005     * or more contributor license agreements.  See the NOTICE file
006     * distributed with this work for additional information
007     * regarding copyright ownership.  The ASF licenses this file
008     * to you under the Apache License, Version 2.0 (the
009     * "License"); you may not use this file except in compliance
010     * with the License.  You may obtain a copy of the License at
011     *
012     *  http://www.apache.org/licenses/LICENSE-2.0
013     *
014     * Unless required by applicable law or agreed to in writing,
015     * software distributed under the License is distributed on an
016     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017     * KIND, either express or implied.  See the License for the
018     * specific language governing permissions and limitations
019     * under the License.
020     */
021    
022    import org.apache.archiva.configuration.AbstractRepositoryConfiguration;
023    
024    import java.util.Comparator;
025    
026    /**
027     * RepositoryConfigurationComparator
028     *
029     *
030     */
031    public class RepositoryConfigurationComparator
032        implements Comparator<AbstractRepositoryConfiguration>
033    {
034        public int compare( AbstractRepositoryConfiguration o1, AbstractRepositoryConfiguration o2 )
035        {
036            if ( o1 == null && o2 == null )
037            {
038                return 0;
039            }
040    
041            if ( o1 == null )
042            {
043                return -1;
044            }
045    
046            if ( o2 == null )
047            {
048                return 1;
049            }
050    
051            return o1.getId().compareToIgnoreCase( o2.getId() );
052        }
053    }