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