Package org.apache.lucene.spatial.util

Class CachingDoubleValueSource

java.lang.Object

org.apache.lucene.search.DoubleValuesSource

org.apache.lucene.spatial.util.CachingDoubleValueSource

All Implemented Interfaces:

SegmentCacheable

public class CachingDoubleValueSource
extends DoubleValuesSource

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.

Field Summary

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

SCORES

Constructor Summary

Constructors

Constructor	Description
CachingDoubleValueSource(DoubleValuesSource source)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
Explanation	explain(LeafReaderContext ctx, int docId, Explanation scoreExplanation)
DoubleValues	getValues(LeafReaderContext readerContext, DoubleValues scores)
int	hashCode()
boolean	isCacheable(LeafReaderContext ctx)
boolean	needsScores()
DoubleValuesSource	rewrite(IndexSearcher searcher)
String	toString()

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

constant, 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

CachingDoubleValueSource

public CachingDoubleValueSource(DoubleValuesSource source)

Method Detail

toString

public String toString()

Specified by:

toString in class DoubleValuesSource

getValues

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

Specified by:

getValues in class DoubleValuesSource

Throws:

IOException

needsScores

public boolean needsScores()

Specified by:

needsScores in class DoubleValuesSource

isCacheable

public boolean isCacheable(LeafReaderContext ctx)

explain

public Explanation explain(LeafReaderContext ctx,
                           int docId,
                           Explanation scoreExplanation)
                    throws IOException

Overrides:

explain in class DoubleValuesSource

Throws:

IOException

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