1 package org.apache.lucene.search.vectorhighlight;
4 * Licensed to the Apache Software Foundation (ASF) under one or more
5 * contributor license agreements. See the NOTICE file distributed with
6 * this work for additional information regarding copyright ownership.
7 * The ASF licenses this file to You under the Apache License, Version 2.0
8 * (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
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20 import java.util.Collections;
21 import java.util.Comparator;
22 import java.util.List;
24 import org.apache.lucene.search.vectorhighlight.FieldFragList.WeightedFragInfo;
27 * An implementation of FragmentsBuilder that outputs score-order fragments.
29 public class ScoreOrderFragmentsBuilder extends BaseFragmentsBuilder {
34 public ScoreOrderFragmentsBuilder(){
41 * @param preTags array of pre-tags for markup terms.
42 * @param postTags array of post-tags for markup terms.
44 public ScoreOrderFragmentsBuilder( String[] preTags, String[] postTags ){
45 super( preTags, postTags );
48 public ScoreOrderFragmentsBuilder( BoundaryScanner bs ){
52 public ScoreOrderFragmentsBuilder( String[] preTags, String[] postTags, BoundaryScanner bs ){
53 super( preTags, postTags, bs );
57 * Sort by score the list of WeightedFragInfo
60 public List<WeightedFragInfo> getWeightedFragInfoList( List<WeightedFragInfo> src ) {
61 Collections.sort( src, new ScoreComparator() );
65 public static class ScoreComparator implements Comparator<WeightedFragInfo> {
67 public int compare( WeightedFragInfo o1, WeightedFragInfo o2 ) {
68 if( o1.totalBoost > o2.totalBoost ) return -1;
69 else if( o1.totalBoost < o2.totalBoost ) return 1;
70 // if same score then check startOffset
72 if( o1.startOffset < o2.startOffset ) return -1;
73 else if( o1.startOffset > o2.startOffset ) return 1;