Package org.apache.lucene.spatial.vector

Class DistanceValueSource

java.lang.Object

org.apache.lucene.search.DoubleValuesSource

org.apache.lucene.spatial.vector.DistanceValueSource

All Implemented Interfaces:

SegmentCacheable

public class DistanceValueSource
extends DoubleValuesSource

A DoubleValuesSource that returns the distance for a PointVectorStrategy.

NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.

Field Summary

Fields inherited from class org.apache.lucene.search.DoubleValuesSource

SCORES

Constructor Summary

Constructors

Constructor	Description
DistanceValueSource(PointVectorStrategy strategy, org.locationtech.spatial4j.shape.Point from, double multiplier)	Constructor.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
DoubleValues	getValues(LeafReaderContext readerContext, DoubleValues scores)	Returns the FunctionValues used by the function query.
int	hashCode()
boolean	isCacheable(LeafReaderContext ctx)
boolean	needsScores()
DoubleValuesSource	rewrite(IndexSearcher searcher)
String	toString()	Returns the ValueSource description.

Methods inherited from class org.apache.lucene.search.DoubleValuesSource

constant, explain, fromDoubleField, fromField, fromFloatField, fromIntField, fromLongField, fromQuery, fromScorer, getSortField, toLongValuesSource

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DistanceValueSource

public DistanceValueSource(PointVectorStrategy strategy,
                           org.locationtech.spatial4j.shape.Point from,
                           double multiplier)

Constructor.

Method Detail

toString

public String toString()

Returns the ValueSource description.

Specified by:

toString in class DoubleValuesSource

getValues

public DoubleValues getValues(LeafReaderContext readerContext,
                              DoubleValues scores)
                       throws IOException

Returns the FunctionValues used by the function query.

Specified by:

getValues in class DoubleValuesSource

Throws:

IOException

needsScores

public boolean needsScores()

Specified by:

needsScores in class DoubleValuesSource

isCacheable

public boolean isCacheable(LeafReaderContext ctx)

rewrite

public DoubleValuesSource rewrite(IndexSearcher searcher)
                           throws IOException

Specified by:

rewrite in class DoubleValuesSource

Throws:

IOException

equals

public boolean equals(Object o)

Specified by:

equals in class DoubleValuesSource

hashCode

public int hashCode()

Specified by:

hashCode in class DoubleValuesSource