Examples of org.apache.lucene.search.ConstantScoreQuery

org.apache.lucene.search.ConstantScoreQuery
A query that wraps another query or a filter and simply returns a constant score equal to the query boost for every document that matches the filter or query. For queries it therefore simply strips of all scores and returns a constant one.

                return fQuery.getFilter();
            }
        } else if (query instanceof DeletionAwareConstantScoreQuery) {
            return ((DeletionAwareConstantScoreQuery) query).getFilter();
        } else if (query instanceof ConstantScoreQuery) {
            ConstantScoreQuery constantScoreQuery = (ConstantScoreQuery) query;
            if (constantScoreQuery.getFilter() != null) {
                return constantScoreQuery.getFilter();
            }
        }
        return null;
    }

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   * Convenience method to build a Query from a uid list
   * @param uids
   * @return
   */
  public static Query getUIDQuery(long[] uids){
    return new ConstantScoreQuery(new UIDFilter(uids));
  }

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        query = new FilteredQuery(query, parseContext.cacheFilter(childDocMapper.typeFilter(), null));


        SearchContext searchContext = SearchContext.current();
        HasChildFilter childFilter = new HasChildFilter(query, scope, childType, parentType, searchContext);
        // we don't need DeletionAwareConstantScore, since we filter deleted parent docs in the filter
        ConstantScoreQuery childQuery = new ConstantScoreQuery(childFilter);
        childQuery.setBoost(boost);
        searchContext.addScopePhase(childFilter);
        return childQuery;
    }

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            types = parseContext.mapperService().types();
        }


        UidFilter filter = new UidFilter(types, ids, parseContext.indexCache().bloomCache());
        // no need for constant score filter, since we don't cache the filter, and it always takes deletes into account
        ConstantScoreQuery query = new ConstantScoreQuery(filter);
        query.setBoost(boost);
        return query;
    }

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  public Query rewrite(IndexReader reader) throws IOException {
    // TODO: if number of terms are low enough, rewrite to a BooleanQuery
    // for potentially faster execution.
    // TODO: cache the bitset somewhere instead of regenerating it
    Query q = new ConstantScoreQuery(new PrefixFilter(prefix));
    q.setBoost(getBoost());
    return q;
  }

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          Math.min(BooleanQuery.getMaxClauseCount(), terms.size()));
      BooleanQuery bq = new BooleanQuery();
      for (int j = 0; j < numTerms; j++) {
        bq.add(new BooleanClause(new TermQuery(terms.get(j)), Occur.SHOULD));
      }
      TopDocs queryResult = searcher.search(new ConstantScoreQuery(bq), reader.maxDoc());
      
      MatchAllDocsQuery matchAll = new MatchAllDocsQuery();
      final TermsFilter filter = termsFilter(singleField, terms.subList(0, numTerms));;
      TopDocs filterResult = searcher.search(matchAll, filter, reader.maxDoc());
      assertEquals(filterResult.totalHits, queryResult.totalHits);

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      }
      q = bq;
    }
    drillDownDims.put(dim, drillDownDims.size());


    final ConstantScoreQuery drillDownQuery = new ConstantScoreQuery(q);
    drillDownQuery.setBoost(0.0f);
    query.add(drillDownQuery, Occur.MUST);
  }

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      @Override
      protected Analyzer getIndexAnalyzer(String field) {
        return analyzer;
      }
    };
    ConstantScoreQuery query = new ConstantScoreQuery(new WildcardQuery(new Term("body", "te*")));
    TopDocs topDocs = searcher.search(query, null, 10, Sort.INDEXORDER);
    assertEquals(2, topDocs.totalHits);
    String snippets[] = highlighter.highlight("body", query, searcher, topDocs);
    assertEquals(2, snippets.length);
    assertEquals("This is a <b>test</b>.", snippets[0]);

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  }


  public Query getQuery(Element e) throws ParserException
  {
     Element filterElem=DOMUtils.getFirstChildOrFail(e);
      Query q=new ConstantScoreQuery(filterFactory.getFilter(filterElem));


      q.setBoost(DOMUtils.getAttribute(e,"boost",1.0f));


      return q;
    
  }

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  }


  public Query getQuery(Element e) throws ParserException
  {
     Element filterElem=DOMUtils.getFirstChildOrFail(e);
      Query q=new ConstantScoreQuery(filterFactory.getFilter(filterElem));


      q.setBoost(DOMUtils.getAttribute(e,"boost",1.0f));


      return q;
    
  }

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