org.apache.lucene.spatial.util
Class CachingDoubleValueSource

java.lang.Object
  org.apache.lucene.queries.function.ValueSource
      org.apache.lucene.spatial.util.CachingDoubleValueSource

public class CachingDoubleValueSource
extends ValueSource

Caches the doubleVal of another value source in a HashMap so that it is computed only once.

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

Constructor Summary

CachingDoubleValueSource(ValueSource source)

Method Summary

String	description()
boolean	equals(Object o)
FunctionValues	getValues(Map context, AtomicReaderContext readerContext)
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

CachingDoubleValueSource

public CachingDoubleValueSource(ValueSource source)

Method Detail

description

public String description()

Specified by:

description in class ValueSource

getValues

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

Specified by:

getValues 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