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

        
        if (SCORE.equals(field)) {
          if (top) {
            lst.add(SortField.FIELD_SCORE);
          } else {
            lst.add(new SortField(null, SortField.SCORE, true));
          }
        } else if (DOCID.equals(field)) {
          lst.add(new SortField(null, SortField.DOC, top));
        } else {
          // try to find the field
          SchemaField sf = req.getSchema().getFieldOrNull(field);
          if (null == sf) {
            if (null != qParserException) {

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  }


  public void testReverseDateSort() throws Exception {
    IndexSearcher searcher = newSearcher(reader);


    Sort sort = new Sort(new SortField(DATE_TIME_FIELD, SortField.STRING, true));


    QueryParser queryParser = new QueryParser(TEST_VERSION_CURRENT, TEXT_FIELD, new MockAnalyzer(random));
    Query query = queryParser.parse("Document");


    // Execute the search and process the search results.

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    }
  }


  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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    final SortField[] sortFields = groupSort.getSort();
    comparators = new FieldComparator[sortFields.length];
    compIDXEnd = comparators.length - 1;
    reversed = new int[sortFields.length];
    for (int i = 0; i < sortFields.length; i++) {
      final SortField sortField = sortFields[i];
      comparators[i] = sortField.getComparator(topNGroups, i);
      reversed[i] = sortField.getReverse() ? -1 : 1;
    }
  }

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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, frResult);


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


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

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            // higher scores are first. JCR specs that lower score values
            // are first.
            boolean isAsc = QueryObjectModelConstants.JCR_ORDER_ASCENDING
                    .equals(o.getOrder());
            if (JcrConstants.JCR_SCORE.equals(p)) {
                sortFields.add(new SortField(null, SortField.SCORE, !isAsc));
            } else {
                // TODO use native sort if available
                sortFields.add(new SortField(p, dofcs, !isAsc));
            }
        }
        return sortFields.toArray(new SortField[sortFields.size()]);
    }

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                    && NameConstants.JCR_SCORE.equals(orderProps[i].getName())) {
                // order on jcr:score does not use the natural order as
                // implemented in lucene. score ascending in lucene means that
                // higher scores are first. JCR specs that lower score values
                // are first.
                sortFields.add(new SortField(null, SortField.SCORE, orderSpecs[i]));
            } else {
                if ("upper-case".equals(orderFuncs[i])) {
                    sortFields.add(new SortField(orderProps[i].getString(), new UpperCaseSortComparator(scs), !orderSpecs[i]));
                } else if ("lower-case".equals(orderFuncs[i])) {
                    sortFields.add(new SortField(orderProps[i].getString(), new LowerCaseSortComparator(scs), !orderSpecs[i]));
                } else {
                    sortFields.add(new SortField(orderProps[i].getString(), scs, !orderSpecs[i]));
                }
            }
        }
        return sortFields.toArray(new SortField[sortFields.size()]);
    }

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