MapValueComparator.java

/*******************************************************************************
 * Copyright 2012 the original author or authors.
 * 
 * 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 emlab.util;

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

public class MapValueComparator implements Comparator<Object> {

    Map<?, ?> base;

    public MapValueComparator(Map<?, ?> base) {
        this.base = base;
    }

    public int compare(Object a, Object b) {

        if (((Double) base.get(a)).doubleValue() > ((Double) base.get(b)).doubleValue()) {
            return 1;
        } else if (((Double) base.get(a)).doubleValue() == ((Double) base.get(b)).doubleValue()) {
            return 1;
        } else {
            return -1;
        }
    }
}