Source code

001package org.apache.archiva.rest.services.utils;
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
022import org.apache.archiva.rest.api.model.AdminRepositoryConsumer;
023
024import java.util.Comparator;
025
026/**
027 * AdminRepositoryConsumerComparator 
028 *
029 *
030 */
031public class AdminRepositoryConsumerComparator
032    implements Comparator<AdminRepositoryConsumer>
033{
034    private static AdminRepositoryConsumerComparator INSTANCE = new AdminRepositoryConsumerComparator();
035
036    public static AdminRepositoryConsumerComparator getInstance()
037    {
038        return INSTANCE;
039    }
040
041    @Override
042    public int compare( AdminRepositoryConsumer o1, AdminRepositoryConsumer o2 )
043    {
044        if ( o1 == null && o2 == null )
045        {
046            return 0;
047        }
048
049        if ( o1 == null && o2 != null )
050        {
051            return 1;
052        }
053
054        if ( o1 != null && o2 == null )
055        {
056            return -1;
057        }
058
059        String id1 = o1.getId();
060        String id2 = o2.getId();
061        return id1.compareToIgnoreCase( id2 );
062    }
063}