Module org.apache.lucene.core

Package org.apache.lucene.search

Class LongValuesSource.DoubleLongValuesSource

java.lang.Object

org.apache.lucene.search.DoubleValuesSource

org.apache.lucene.search.LongValuesSource.DoubleLongValuesSource

All Implemented Interfaces:

SegmentCacheable

Enclosing class:

LongValuesSource

private static class LongValuesSource.DoubleLongValuesSource
extends DoubleValuesSource

Field Summary

Fields

Modifier and Type	Field	Description
private final LongValuesSource	inner

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

SCORES

Constructor Summary

Constructors

Modifier	Constructor	Description
private	DoubleLongValuesSource(LongValuesSource inner)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
DoubleValues	getValues(LeafReaderContext ctx, DoubleValues scores)	Returns a DoubleValues instance for the passed-in LeafReaderContext and scores
int	hashCode()
boolean	isCacheable(LeafReaderContext ctx)
boolean	needsScores()	Return true if document scores are needed to calculate values
DoubleValuesSource	rewrite(IndexSearcher searcher)	Return a DoubleValuesSource specialised for the given IndexSearcher
String	toString()

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

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

Methods inherited from class java.lang.Object

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

Field Details

inner

private final LongValuesSource inner

Constructor Details

DoubleLongValuesSource

private DoubleLongValuesSource(LongValuesSource inner)

Method Details

getValues

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

Description copied from class: DoubleValuesSource

Returns a DoubleValues instance for the passed-in LeafReaderContext and scores

If scores are not needed to calculate the values (ie returns false, callers may safely pass null for the scores parameter.

Specified by:

getValues in class DoubleValuesSource

Throws:

IOException

rewrite

public DoubleValuesSource rewrite(IndexSearcher searcher)
                           throws IOException

Description copied from class: DoubleValuesSource

Return a DoubleValuesSource specialised for the given IndexSearcher

Implementations should assume that this will only be called once. IndexReader-independent implementations can just return this

Queries that use DoubleValuesSource objects should call rewrite() during Query.createWeight(IndexSearcher, ScoreMode, float) rather than during Query.rewrite(IndexSearcher) to avoid IndexReader reference leakage.

For the same reason, implementations that cache references to the IndexSearcher should return a new object from this method.

Specified by:

rewrite in class DoubleValuesSource

Throws:

IOException

isCacheable

public boolean isCacheable(LeafReaderContext ctx)

Returns:

true if the object can be cached against a given leaf

toString

public String toString()

Specified by:

toString in class DoubleValuesSource

needsScores

public boolean needsScores()

Description copied from class: DoubleValuesSource

Return true if document scores are needed to calculate values

Specified by:

needsScores in class DoubleValuesSource

equals

public boolean equals(Object o)

Specified by:

equals in class DoubleValuesSource

hashCode

public int hashCode()

Specified by:

hashCode in class DoubleValuesSource