MapValueReverseComparator.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.gen.util;

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

public class MapValueReverseComparator implements Comparator<Object> {

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

  public int compare(Object a, Object b) {

    if((Double)base.get(a) < (Double)base.get(b)) {
      return 1;
    } else if((Double)base.get(a) == (Double)base.get(b)) {
      return 0;
    } else {
      return -1;
    }
  }
}