Source code

001package 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
022import org.apache.archiva.configuration.ProxyConnectorConfiguration;
023
024import java.util.Comparator;
025
026/**
027 *
028 * @deprecated ProxyConnectorConfigurationOrderComparator
029 */
030public class ProxyConnectorConfigurationOrderComparator
031    implements Comparator<ProxyConnectorConfiguration>
032{
033    private static ProxyConnectorConfigurationOrderComparator INSTANCE =
034        new ProxyConnectorConfigurationOrderComparator();
035
036    @Override
037    public int compare( ProxyConnectorConfiguration o1, ProxyConnectorConfiguration o2 )
038    {
039        if ( o1 == null && o2 == null )
040        {
041            return 0;
042        }
043
044        // Ensure null goes to end of list.
045        if ( o1 == null && o2 != null )
046        {
047            return 1;
048        }
049
050        if ( o1 != null && o2 == null )
051        {
052            return -1;
053        }
054
055        // Ensure 0 (unordered) goes to end of list.
056        if ( o1.getOrder() == 0 && o2.getOrder() != 0 )
057        {
058            return 1;
059        }
060
061        if ( o1.getOrder() != 0 && o2.getOrder() == 0 )
062        {
063            return -1;
064        }
065
066        return o1.getOrder() - o2.getOrder();
067    }
068
069    public static ProxyConnectorConfigurationOrderComparator getInstance()
070    {
071        return INSTANCE;
072    }
073}