# Package org.eclipse.rdf4j.sail.lucene.fn

- Class Summary
  Class | Description
  --- | ---
  DistanceTupleFunction | Arguments: from is the WKT point to measure from. maxDistance is the maximum distance to consider. units are the measurement units. geoProperty is the predicate to use. search:distance else omitted. search:context else omitted. Results: subject is the subject whose geometry is within the given max distance. to is the WKT of the shape measured to. distance is the distance to the shape if search:distance is present. context is the context if search:context is present.
  QueryTupleFunction | Arguments: query is the query string. subject is the query subject or the constant search:allMatches. propertyPredicate is the constant search:property or not present. property is present if only propertyPredicate is present and is the property to query or the constant search:allProperties. scorePredicate is the constant search:score or not present. snippetPredicate is the constant search:snippet or not present. Results: subject is included if the subject parameter is search:allMatches else omitted. property included if the propertyPredicate parameter is present and the property parameter is search:allProperties else omitted. score is included if the scorePredicate is search:score else omitted. snippet is included if the snippetPredicate is search:snippet else omitted.

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