org.apache.lucene.spatial.vector
Class DistanceValueSource

java.lang.Object
  org.apache.lucene.queries.function.ValueSource
      org.apache.lucene.spatial.vector.DistanceValueSource

public class DistanceValueSource
extends ValueSource

An implementation of the Lucene ValueSource model to support spatial relevance ranking.

Constructor Summary

DistanceValueSource(com.spatial4j.core.shape.Point from, com.spatial4j.core.distance.DistanceCalculator calc, TwoDoublesFieldInfo fields, FieldCache.DoubleParser parser)
Constructor.

Method Summary

String	description() Returns the ValueSource description.
boolean	equals(Object o) Determines if this ValueSource is equal to another.
FunctionValues	getValues(Map context, AtomicReaderContext readerContext) Returns the FunctionValues used by the function query.
int	hashCode()

Methods inherited from class org.apache.lucene.queries.function.ValueSource

createWeight, getSortField, newContext, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

DistanceValueSource

public DistanceValueSource(com.spatial4j.core.shape.Point from,
                           com.spatial4j.core.distance.DistanceCalculator calc,
                           TwoDoublesFieldInfo fields,
                           FieldCache.DoubleParser parser)

Constructor.

Method Detail

description

public String description()

Returns the ValueSource description.

Specified by:

description in class ValueSource

getValues

public FunctionValues getValues(Map context,
                                AtomicReaderContext readerContext)
                         throws IOException

Returns the FunctionValues used by the function query.

Specified by:

getValues in class ValueSource

Throws:

IOException

equals

public boolean equals(Object o)

Determines if this ValueSource is equal to another.

Specified by:

equals in class ValueSource

Parameters:

o - the ValueSource to compare

Returns:

true if the two objects are based upon the same query envelope

hashCode

public int hashCode()

Specified by:

hashCode in class ValueSource