Package org.apache.lucene.queries.function

Class IndexReaderFunctions.NoCacheConstantLongValuesSource

java.lang.Object

org.apache.lucene.search.LongValuesSource

org.apache.lucene.queries.function.IndexReaderFunctions.NoCacheConstantLongValuesSource

All Implemented Interfaces:

SegmentCacheable

Enclosing class:

IndexReaderFunctions

private static class IndexReaderFunctions.NoCacheConstantLongValuesSource
extends LongValuesSource

Field Summary

Fields

Modifier and Type	Field	Description
(package private) final LongValuesSource	parent
(package private) final long	value

Constructor Summary

Constructors

Modifier	Constructor	Description
private	NoCacheConstantLongValuesSource(long value, LongValuesSource parent)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
LongValues	getValues(LeafReaderContext ctx, DoubleValues scores)	Returns a LongValues 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.
int	hashCode()
boolean	isCacheable(LeafReaderContext ctx)
boolean	needsScores()	Return true if document scores are needed to calculate values
LongValuesSource	rewrite(IndexSearcher reader)	Return a LongValuesSource specialised for the given IndexSearcher Implementations should assume that this will only be called once.
String	toString()

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

constant, fromIntField, fromLongField, getSortField, toDoubleValuesSource

Methods inherited from class java.lang.Object

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

Field Details

value

final long value

parent

final LongValuesSource parent

Constructor Details

NoCacheConstantLongValuesSource

private NoCacheConstantLongValuesSource(long value,
 LongValuesSource parent)

Method Details

getValues

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

Description copied from class: LongValuesSource

Returns a LongValues 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 LongValuesSource

Throws:

IOException

needsScores

public boolean needsScores()

Description copied from class: LongValuesSource

Return true if document scores are needed to calculate values

Specified by:

needsScores in class LongValuesSource

rewrite

public LongValuesSource rewrite(IndexSearcher reader)
                         throws IOException

Description copied from class: LongValuesSource

Return a LongValuesSource specialised for the given IndexSearcher Implementations should assume that this will only be called once. IndexSearcher-independent implementations can just return this

Specified by:

rewrite in class LongValuesSource

Throws:

IOException

equals

public boolean equals(Object o)

Specified by:

equals in class LongValuesSource

hashCode

public int hashCode()

Specified by:

hashCode in class LongValuesSource

toString

public String toString()

Specified by:

toString in class LongValuesSource

isCacheable

public boolean isCacheable(LeafReaderContext ctx)

Returns:

true if the object can be cached against a given leaf