/* Copyright (C) 2012 JabRef contributors.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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 General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package net.sf.jabref.gui;
import net.sf.jabref.BibtexEntry;
import net.sf.jabref.specialfields.SpecialFieldsUtils;
import java.util.Comparator;
/**
* Comparator that handles the ranking icon column
*
* Based on IconComparator
* Only comparing ranking field
* inverse comparison of ranking as rank5 is higher than rank1
*/
public class RankingFieldComparator implements Comparator<BibtexEntry> {
public int compare(BibtexEntry e1, BibtexEntry e2) {
String val1 = e1.getField(SpecialFieldsUtils.FIELDNAME_RANKING);
String val2 = e2.getField(SpecialFieldsUtils.FIELDNAME_RANKING);
if (val1 == null) {
if (val2 != null) {
return 1;
} else {
return 0;
}
} else {
if (val2 == null) {
return -1;
} else {
// val1 is not null AND val2 is not null
int compareToRes = val1.compareTo(val2);
if (compareToRes != 0) {
return compareToRes*-1;
} else {
return 0;
}
}
}
}
}