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• ValueComparator.java

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eu.fbk.dkm.utils.ValueComparator Maven / Gradle / Ivy

package eu.fbk.dkm.utils;

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

/**
 * Created by alessio on 02/04/15.
 */

public class ValueComparator implements Comparator {

	Map map;
	boolean desc = false;

	public ValueComparator(Map map) {
		this.map = map;
	}

	public ValueComparator(Map map, boolean desc) {
		this.map = map;
		this.desc = desc;
	}

	@Override
	public int compare(Object keyA, Object keyB) {
		Comparable valueA = (Comparable) map.get(keyA);
		Comparable valueB = (Comparable) map.get(keyB);
		if (desc) {
			return valueB.compareTo(valueA);
		}
		return valueA.compareTo(valueB);
	}
}