// BSD License (http://www.galagosearch.org/license)

 package org.galagosearch.core.retrieval.structured;

 import java.io.IOException;

 import java.util.ArrayList;

 import org.galagosearch.tupleflow.Parameters;

 /**

  *

  * @author trevor

  */

 public class ScaleIterator implements ScoreIterator {

     ScoreIterator iterator;

     double weight;

     public ScaleIterator(Parameters parameters, ScoreIterator iterator) throws IllegalArgumentException {

         this.iterator = iterator;

         weight = parameters.get("weight", 1.0);

     }

     public int nextCandidate() {

         return iterator.nextCandidate();

     }

     public boolean hasMatch(int document) {

         return iterator.hasMatch(document);

     }

     public void moveTo(int document) throws IOException {

         iterator.moveTo(document);

     }

     public void movePast(int document) throws IOException {

         iterator.movePast(document);

     }

     public double score(int document, int length) {

         return weight * iterator.score(document, length);

     }

     public boolean isDone() {

         return iterator.isDone();

     }

     public void reset() throws IOException {

         iterator.reset();

     }

 }