lucene/highlighter/src/test/org/apache/lucene/search/vectorhighlight/ScoreOrderFragmentsBuilderTest.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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
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 * distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.lucene.search.vectorhighlight;

import org.apache.lucene.index.Term;
import org.apache.lucene.search.BooleanClause;
import org.apache.lucene.search.BooleanQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TermQuery;

public class ScoreOrderFragmentsBuilderTest extends AbstractTestCase {
  
  public void test3Frags() throws Exception {
    BooleanQuery.Builder query = new BooleanQuery.Builder();
    query.add(new TermQuery(new Term(F, "a")), BooleanClause.Occur.SHOULD);
    query.add(new TermQuery(new Term(F, "c")), BooleanClause.Occur.SHOULD);

    FieldFragList ffl = ffl(query.build(), "a b b b b b b b b b b b a b a b b b b b c a a b b" );
    ScoreOrderFragmentsBuilder sofb = new ScoreOrderFragmentsBuilder();
    String[] f = sofb.createFragments( reader, 0, F, ffl, 3 );
    assertEquals( 3, f.length );
    // check score order
    assertEquals( "<b>c</b> <b>a</b> <b>a</b> b b", f[0] );
    assertEquals( "b b <b>a</b> b <b>a</b> b b b b b c", f[1] );
    assertEquals( "<b>a</b> b b b b b b b b b b", f[2] );
  }

  private FieldFragList ffl(Query query, String indexValue ) throws Exception {
    make1d1fIndex( indexValue );
    FieldQuery fq = new FieldQuery( query, true, true );
    FieldTermStack stack = new FieldTermStack( reader, 0, F, fq );
    FieldPhraseList fpl = new FieldPhraseList( stack, fq );
    return new SimpleFragListBuilder().createFieldFragList( fpl, 20 );
  }
}