org.apache.solr.search.function.distance
Class GeohashHaversineFunction
java.lang.Object
org.apache.lucene.queries.function.ValueSource
org.apache.solr.search.function.distance.GeohashHaversineFunction
public class GeohashHaversineFunction
- extends ValueSource
Calculate the Haversine distance between two geo hash codes.
Ex: ghhsin(ValueSource, ValueSource, radius)
- See Also:
for more details on the implementation
GeohashHaversineFunction
public GeohashHaversineFunction(ValueSource geoHash1,
ValueSource geoHash2,
double radius)
name
protected String name()
getValues
public FunctionValues getValues(Map context,
AtomicReaderContext readerContext)
throws IOException
- Specified by:
getValues
in class ValueSource
- Throws:
IOException
distance
protected double distance(int doc,
FunctionValues gh1DV,
FunctionValues gh2DV)
createWeight
public void createWeight(Map context,
IndexSearcher searcher)
throws IOException
- Overrides:
createWeight
in class ValueSource
- Throws:
IOException
equals
public boolean equals(Object o)
- Specified by:
equals
in class ValueSource
hashCode
public int hashCode()
- Specified by:
hashCode
in class ValueSource
description
public String description()
- Specified by:
description
in class ValueSource
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