ValueComparator.java

/*****************************************************************************************
Infosistema - OpenBaas
Copyright(C) 2002-2014 Infosistema, S.A.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
www.infosistema.com
info@openbaas.com
Av. José Gomes Ferreira, 11 3rd floor, s.34
Miraflores
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****************************************************************************************/
package infosistema.openbaas.utils;

import java.util.Comparator;
import java.util.Map;

public class ValueComparator implements Comparator<String> {
	Map<String, Double> base;
    public ValueComparator(Map<String, Double> base) {
        this.base = base;
    }

    // Note: this comparator imposes orderings that are inconsistent with equals.    
    public int compare(String a, String b) {
        if (base.get(a) >= base.get(b)) {
            return -1;
        } else {
            return 1;
        } // returning 0 would merge keys
    }
}