/*
* #!
* 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.nav2.impl.basic;
import java.util.Comparator;
import net.ontopia.utils.OntopiaRuntimeException;
/**
* INTERNAL: Specialized comparator for AssocInfoStorage objects.
*/
public class AssocInfoStorageComparator implements Comparator {
/**
* INTERNAL: Default constructor.
*/
public AssocInfoStorageComparator() {
}
/**
* INTERNAL: Compares two AssocInfoStorage objects.
*/
public int compare(Object o1, Object o2) {
String value1, value2;
try {
value1 = ((AssocInfoStorage) o1).getSortName();
value2 = ((AssocInfoStorage) o2).getSortName();
} catch (ClassCastException e) {
String msg = "AssocInfoStorageComparator Error: " +
"This comparator only compares AssocInfoStorage objects.";
throw new OntopiaRuntimeException(msg);
}
if (value1 == null) return 1;
if (value2 == null) return -1;
return value1.compareToIgnoreCase(value2);
}
}