Examples of org.apache.lucene.search.function.ValueSourceQuery

Package org.apache.lucene.search.function

Examples of org.apache.lucene.search.function.ValueSourceQuery

org.apache.lucene.search.function.ValueSourceQuery
Expert: A Query that sets the scores of document to the values obtained from a {@link org.apache.lucene.search.function.ValueSource ValueSource}.
This query provides a score for each and every undeleted document in the index.
The value source can be based on a (cached) value of an indexed field, but it can also be based on an external source, e.g. values read from an external database.
Score is set as: Score(doc,query) = query.getBoost()² * valueSource(doc).
WARNING: The status of the search.function package is experimental. The APIs introduced here might change in the future and will not be supported anymore in such a case.

          this.translator.getFieldType(key));


      ValueSource valSrc = new ErlangValueSource((ErlangFilter) filter);


      return new CustomScoreQuery(new ConstantScoreQuery(filter),
          new ValueSourceQuery(valSrc));
    }
  }

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    Filter filter = new RedisFilter(host, port, db, command, key);


    ValueSource valSrc = new RedisValueSource((RedisFilter) filter);


    return new CustomScoreQuery(new ConstantScoreQuery(filter),
        new ValueSourceQuery(valSrc));
  }

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                + "`lng");


        ValueSource valSrc = new DistanceValueSource(filter);


        return new CustomScoreQuery(new ConstantScoreQuery(filter),
            new ValueSourceQuery(valSrc));
      } catch (IllegalArgumentException iae) {
        throw new ParseException(iae.getMessage());
      }
    }
  }

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        throw new DiscoveryException(sErr+spatialClause.getClass().getName());
      }
      
      if (bUseSpatialRanking) {
        SpatialRankingValueSource srvs = new SpatialRankingValueSource(envelope,queryPower,targetPower);
        Query spatialRankingQuery = new ValueSourceQuery(srvs);
        BooleanQuery bq = new BooleanQuery();
        bq.add(spatialQuery,BooleanClause.Occur.MUST);
        bq.add(spatialRankingQuery,BooleanClause.Occur.MUST);
        appendQuery(activeBooleanQuery,activeLogicalClause,bq);
        this.getQueryAdapter().setHasScoredExpression(true);

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