Examples of org.apache.lucene.search.SortField

org.apache.lucene.search.SortField
Stores information about how to sort documents by terms in an individual field. Fields must be indexed in order to sort by them.
Created: Feb 11, 2004 1:25:29 PM @since lucene 1.4 @see Sort

    }
  }


  private int runQuery(IndexSearcher s, Query q) throws Exception {
    s.search(q, 10);
    return s.search(q, null, 10, new Sort(new SortField("title", SortField.STRING))).totalHits;
  }

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    // Create a distance sort
    // As the radius filter has performed the distance calculations
    // already, pass in the filter to reuse the results.
    //
    DistanceFieldComparatorSource dsort = new DistanceFieldComparatorSource(dq.distanceFilter);
    Sort sort = new Sort(new SortField("foo", dsort,false));


    // Perform the search, using the term query, the serial chain filter, and the
    // distance sort
    TopDocs hits = searcher.search(customScore.createWeight(searcher),null, 1000, sort);
    int results = hits.totalHits;

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    // Create a distance sort
    // As the radius filter has performed the distance calculations
    // already, pass in the filter to reuse the results.
    //
    DistanceFieldComparatorSource dsort = new DistanceFieldComparatorSource(dq.distanceFilter);
    Sort sort = new Sort(new SortField("foo", dsort,false));


    // Perform the search, using the term query, the serial chain filter, and the
    // distance sort
    TopDocs hits = searcher.search(customScore.createWeight(searcher),null, 1000, sort);
    int results = hits.totalHits;

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      // Create a distance sort
      // As the radius filter has performed the distance calculations
      // already, pass in the filter to reuse the results.
      // 
      DistanceFieldComparatorSource dsort = new DistanceFieldComparatorSource(dq.distanceFilter);
      Sort sort = new Sort(new SortField("foo", dsort,false));
    
      // Perform the search, using the term query, the serial chain filter, and the
      // distance sort
      TopDocs hits = searcher.search(customScore.createWeight(searcher),null, 1000, sort);
      int results = hits.totalHits;

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      // Create a distance sort
      // As the radius filter has performed the distance calculations
      // already, pass in the filter to reuse the results.
      // 
      DistanceFieldComparatorSource dsort = new DistanceFieldComparatorSource(dq.distanceFilter);
      Sort sort = new Sort(new SortField("foo", dsort));
      
      // Perform the search, using the term query, the serial chain filter, and the
      // distance sort
      TopDocs hits = searcher.search(customScore.createWeight(searcher),dq.getFilter(), 1000); //,sort);
      int results = hits.totalHits;

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    Sort sort = new Sort();
    Query queryX = new TermQuery(new Term ("contents", "x"));
    Query queryY = new TermQuery(new Term ("contents", "y"));
    
    sort.setSort(new SortField("US", SortField.STRING));
    assertMatches(searcher, queryY, sort, usResult);


    sort.setSort(new SortField("France", SortField.STRING));
    assertMatches(searcher, queryX, sort, "EACGI");


    sort.setSort(new SortField("Sweden", SortField.STRING));
    assertMatches(searcher, queryY, sort, "BJDFH");


    sort.setSort(new SortField("Denmark", SortField.STRING));
    assertMatches(searcher, queryY, sort, "BJDHF");
  }

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    Sort sort = new Sort();
    Query queryX = new TermQuery(new Term ("contents", "x"));
    Query queryY = new TermQuery(new Term ("contents", "y"));
    
    sort.setSort(new SortField("US", SortField.Type.STRING));
    assertMatches(searcher, queryY, sort, usResult);


    sort.setSort(new SortField("France", SortField.Type.STRING));
    assertMatches(searcher, queryX, sort, frResult);


    sort.setSort(new SortField("Sweden", SortField.Type.STRING));
    assertMatches(searcher, queryY, sort, svResult);


    sort.setSort(new SortField("Denmark", SortField.Type.STRING));
    assertMatches(searcher, queryY, sort, dkResult);
    reader.close();
    indexStore.close();
  }

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    public GroupComparator(Sort groupSort) throws IOException {
      final SortField[] sortFields = groupSort.getSort();
      comparators = new FieldComparator<?>[sortFields.length];
      reversed = new int[sortFields.length];
      for (int compIDX = 0; compIDX < sortFields.length; compIDX++) {
        final SortField sortField = sortFields[compIDX];
        comparators[compIDX] = sortField.getComparator(1, compIDX);
        reversed[compIDX] = sortField.getReverse() ? -1 : 1;
      }
    }

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    IndexReader ir = iw.getReader();
    iw.close();
    
    IndexSearcher is = newSearcher(ir);
    
    SortField sortField = new SortField("collated", SortField.Type.STRING);
    
    TopDocs td = is.search(new MatchAllDocsQuery(), 5, new Sort(sortField));
    assertEquals("abc", ir.document(td.scoreDocs[0].doc).get("field"));
    assertEquals("ABC", ir.document(td.scoreDocs[1].doc).get("field"));
    ir.close();

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      for (int searchIter = 0; searchIter < 100; searchIter++) {
        final IndexSearcher searcher = newSearcher(context.indexReader);
        boolean useDv = context.dvType != null && random.nextBoolean();
        DocValuesType dvType = useDv ? context.dvType : null;
        String term = context.contentStrings[random.nextInt(context.contentStrings.length)];
        Sort groupSort = new Sort(new SortField("id", SortField.Type.STRING));
        int topN = 1 + random.nextInt(10);


        List<AbstractDistinctValuesCollector.GroupCount<Comparable<?>>> expectedResult = createExpectedResult(context, term, groupSort, topN);


        AbstractFirstPassGroupingCollector<Comparable<?>> firstCollector = createRandomFirstPassCollector(dvType, groupSort, groupField, topN);

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