/*
* #!
* Ontopia Navigator
* #-
* Copyright (C) 2001 - 2013 The Ontopia Project
* #-
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* !#
*/
package net.ontopia.topicmaps.nav.utils.comparators;
import java.util.Comparator;
import net.ontopia.utils.StringUtils;
import net.ontopia.topicmaps.entry.TopicMapReferenceIF;
/**
* INTERNAL: A Comparator for ordering TopicMapReferences lexically. It
* compares the titles of references case-insensitively.
*/
public class TopicMapReferenceComparator implements Comparator<TopicMapReferenceIF> {
/**
* INTERNAL: Creates a reference comparator.
*/
public TopicMapReferenceComparator() {
}
/**
* INTERNAL: Compares two TopicMapReferenceIFs.
*/
public int compare(TopicMapReferenceIF tmr1, TopicMapReferenceIF tmr2) {
String title1 = tmr1.getTitle();
String title2 = tmr2.getTitle();
return StringUtils.compareToIgnoreCase(title1, title2);
}
}