Examples of org.apache.lucene.search.TopScoreDocCollector$InOrderTopScoreDocCollector

org.apache.lucene.search.TopScoreDocCollector
A {@link Collector} implementation that collects the top-scoring hits,returning them as a {@link TopDocs}. This is used by {@link IndexSearcher} toimplement {@link TopDocs}-based search. Hits are sorted by score descending and then (when the scores are tied) docID ascending. When you create an instance of this collector you should know in advance whether documents are going to be collected in doc Id order or not.
NOTE: The values {@link Float#NaN} and{Float#NEGATIVE_INFINITY} are not valid scores. This collector will not properly collect hits with such scores.

    private int doSearch(String searchPhrase, int maxNumberOfHits, Version luenceVersion) throws NullPointerException, ParseException, IOException {
        LOG.trace("*** Search Phrase: {} ***", searchPhrase);


        QueryParser parser = new QueryParser(luenceVersion, "contents", analyzer);
        Query query = parser.parse(searchPhrase);
        TopScoreDocCollector collector = TopScoreDocCollector.create(maxNumberOfHits, true);
        indexSearcher.search(query, collector);
        hits = collector.topDocs().scoreDocs;
        
        LOG.trace("*** Search generated {} hits ***", hits.length);
        return hits.length;
    }

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  private List<Document> searchDocument(final Query query) throws Exception {


    final IndexSearcher searcher = getSearcher();


    final TopScoreDocCollector collector = TopScoreDocCollector.create(
        limit, true);


    searcher.search(query, collector);


    final ScoreDoc[] hits = collector.topDocs().scoreDocs;


    final int size = Math.min(hits.length, limit);


    log.debug("hits size : {}", size);

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    private int doSearch(String searchPhrase, int maxNumberOfHits, Version luenceVersion) throws NullPointerException, ParseException, IOException {
        LOG.trace("*** Search Phrase: {} ***", searchPhrase);


        QueryParser parser = new QueryParser(luenceVersion, "contents", analyzer);
        Query query = parser.parse(searchPhrase);
        TopScoreDocCollector collector = TopScoreDocCollector.create(maxNumberOfHits, true);
        indexSearcher.search(query, collector);
        hits = collector.topDocs().scoreDocs;
        
        LOG.trace("*** Search generated {} hits ***", hits.length);
        return hits.length;
    }

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      public FacetsAggregator getAggregator() {
        return new SumScoreFacetsAggregator();
      }
    };
    FacetsCollector fc = FacetsCollector.create(fa);
    TopScoreDocCollector topDocs = TopScoreDocCollector.create(10, false);
    ConstantScoreQuery csq = new ConstantScoreQuery(new MatchAllDocsQuery());
    csq.setBoost(2.0f);
    
    newSearcher(r).search(csq, MultiCollector.wrap(fc, topDocs));
    
    List<FacetResult> res = fc.getFacetResults();
    float value = (float) res.get(0).getFacetResultNode().value;
    TopDocs td = topDocs.topDocs();
    int expected = (int) (td.getMaxScore() * td.totalHits);
    assertEquals(expected, (int) value);
    
    IOUtils.close(taxo, taxoDir, r, indexDir);
  }

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        return aggregator;
      }
    };
    
    FacetsCollector fc = FacetsCollector.create(fa);
    TopScoreDocCollector topDocs = TopScoreDocCollector.create(10, false);
    newSearcher(r).search(new MatchAllDocsQuery(), MultiCollector.wrap(fc, topDocs));
    
    List<FacetResult> facetResults = fc.getFacetResults();
    FacetResult fresA = facetResults.get(0);
    assertEquals("unexpected count for " + fresA, r.maxDoc(), (int) fresA.getFacetResultNode().value);
    
    FacetResult fresB = facetResults.get(1);
    double expected = topDocs.topDocs().getMaxScore() * r.numDocs();
    assertEquals("unexpected value for " + fresB, expected, fresB.getFacetResultNode().value, 1E-10);
    
    IOUtils.close(taxo, taxoDir, r, indexDir);
  }

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    int limit = searcher.getIndexReader().maxDoc();
    if (limit == 0) {
      limit = 1; // the collector does not alow numHits = 0
    }
    topN = Math.min(topN, limit);
    TopScoreDocCollector hitCollector = TopScoreDocCollector.create(topN, after, true);
    DrillSidewaysResult r = search(query, hitCollector, fsp);
    return new DrillSidewaysResult(r.facetResults, hitCollector.topDocs());
  }

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        final Index index = getConfig().getIndexManager().get( org.kie.uberfire.metadata.io.KObjectUtil.toKCluster( basePath.getFileSystem() ) );


        {
            final IndexSearcher searcher = ( (LuceneIndex) index ).nrtSearcher();
            final TopScoreDocCollector collector = TopScoreDocCollector.create( 10,
                                                                                true );
            final Query query = new QueryBuilder().useWildcards().addTerm( new ValueRuleIndexTerm( "*" ) ).build();


            searcher.search( query,
                             collector );
            final ScoreDoc[] hits = collector.topDocs().scoreDocs;
            assertEquals( 0,
                          hits.length );


            ( (LuceneIndex) index ).nrtRelease( searcher );
        }


        {
            final IndexSearcher searcher = ( (LuceneIndex) index ).nrtSearcher();
            final TopScoreDocCollector collector = TopScoreDocCollector.create( 10,
                                                                                true );
            final Query query = new QueryBuilder().addTerm( new ValueTypeIndexTerm( "org.drools.workbench.screens.dsltext.backend.server.indexing.classes.Applicant" ) ).build();


            searcher.search( query,
                             collector );
            final ScoreDoc[] hits = collector.topDocs().scoreDocs;
            assertEquals( 2,
                          hits.length );


            final List<KObject> results = new ArrayList<KObject>();
            for ( int i = 0; i < hits.length; i++ ) {
                results.add( KObjectUtil.toKObject( searcher.doc( hits[ i ].doc ) ) );
            }
            assertContains( results,
                            path1 );
            assertContains( results,
                            path2 );


            ( (LuceneIndex) index ).nrtRelease( searcher );
        }


        {
            final IndexSearcher searcher = ( (LuceneIndex) index ).nrtSearcher();
            final TopScoreDocCollector collector = TopScoreDocCollector.create( 10,
                                                                                true );
            final Query query = new QueryBuilder().addTerm( new ValueTypeIndexTerm( "org.drools.workbench.screens.dsltext.backend.server.indexing.classes.Mortgage" ) ).build();


            searcher.search( query,
                             collector );
            final ScoreDoc[] hits = collector.topDocs().scoreDocs;
            assertEquals( 1,
                          hits.length );


            final List<KObject> results = new ArrayList<KObject>();
            for ( int i = 0; i < hits.length; i++ ) {

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      IndexSearcher searcher = getSearcher();
      Query rewrittenQuery = searcher.rewrite(query);


      log.debug(rewrittenQuery.toString());


      TopScoreDocCollector collector = TopScoreDocCollector.create(5000, true);
      searcher.search(rewrittenQuery, collector);
      int offset = Math.max(0, (page - 1) * pageSize);
      ScoreDoc[] hits = collector.topDocs(offset, pageSize).scoreDocs;
      for (int i = 0; i < hits.length; i++) {
        int docId = hits[i].doc;
        Document doc = searcher.doc(docId);
        QueryResult result = docToQueryResult(doc);
        if (repository != null) {

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          new File(LuceneIndexConstants.LUCENE_DATABASE));
      IndexReader reader = DirectoryReader.open(simpleFSDirectory);


      IndexSearcher searcher = new IndexSearcher(reader);


      TopScoreDocCollector collector = TopScoreDocCollector.create(
          hitsPerPage, true);


      searcher.search(q, collector);


      ScoreDoc[] hits = collector.topDocs().scoreDocs;


      System.out.println("Found " + hits.length + " hits.");
      for (int i = 0; i < hits.length; ++i) {
        ScoreDoc hit = hits[i];
        int docId = hit.doc;

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    private int doSearch(String searchPhrase, int maxNumberOfHits, Version luenceVersion) throws NullPointerException, ParseException, IOException {
        LOG.trace("*** Search Phrase: {} ***", searchPhrase);


        QueryParser parser = new QueryParser(luenceVersion, "contents", analyzer);
        Query query = parser.parse(searchPhrase);
        TopScoreDocCollector collector = TopScoreDocCollector.create(maxNumberOfHits, true);
        indexSearcher.search(query, collector);
        hits = collector.topDocs().scoreDocs;
        
        LOG.trace("*** Search generated {} hits ***", hits.length);
        return hits.length;
    }

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