001/*
002 *  Copyright 2015 Anyware Services
003 *
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package org.ametys.runtime.plugins.admin.logs;
017
018import java.util.Comparator;
019
020import org.apache.log4j.Logger;
021
022/**
023 * Comparator to compare two loggers by their name 
024 */
025public class LoggerComparator implements Comparator<Logger>
026{
027    public int compare(Logger o1, Logger o2)
028    {
029        String[] o1NameParts = o1.getName().split("\\.");
030        String[] o2NameParts = o2.getName().split("\\.");
031        int i = 0;
032        
033        for (; i < o1NameParts.length && i < o2NameParts.length; i++)
034        {
035            int compare = o1NameParts[i].compareTo(o2NameParts[i]);
036            
037            if (compare != 0)
038            {
039                return compare;
040            }
041            
042            // Same category, continue
043        }
044        
045        if (i == o1NameParts.length)
046        {
047            if (i != o2NameParts.length)
048            {
049                // o2 has a longer category
050                return 1;
051            }
052        }
053        else
054        {
055            // o1 has a longer category
056            return -1;
057        }
058        
059        return o1.getName().compareTo(o2.getName());
060    }
061}