/**
* Copyright (c) Codice Foundation
* <p>
* This is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser
* General Public License as published by the Free Software Foundation, either version 3 of the
* License, or any later version.
* <p>
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details. A copy of the GNU Lesser General Public License
* is distributed along with this program and can be found at
* <http://www.gnu.org/licenses/lgpl.html>.
*/
package ddf.catalog.util.impl;
import java.util.Comparator;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import ddf.catalog.source.SourceDescriptor;
/**
* Comparator for the sourceId of 2 {@link SourceDescriptor} objects
*
*/
public class SourceDescriptorComparator implements Comparator<SourceDescriptor> {
private static final Logger LOGGER = LoggerFactory.getLogger(SourceDescriptorComparator.class);
/**
* Uses the {@link String}#compareTo method on the lower-cased sourceId fields to sort
*/
@Override
public int compare(SourceDescriptor one, SourceDescriptor two) {
if (one.getSourceId() != null && two.getSourceId() != null) {
return one.getSourceId()
.toLowerCase()
.compareTo(two.getSourceId()
.toLowerCase());
} else {
LOGGER.debug("Error comparing results, at least one was null. Returning 1: ");
return 1;
}
}
}