org.apache.lucene.search

Class DoubleValuesSource.FieldValuesSource

java.lang.Object

org.apache.lucene.search.DoubleValuesSource

org.apache.lucene.search.DoubleValuesSource.FieldValuesSource

Enclosing class:

DoubleValuesSource

private static class DoubleValuesSource.FieldValuesSource
extends DoubleValuesSource

Field Summary

Fields

Modifier and Type	Field and Description
(package private) java.util.function.LongToDoubleFunction	decoder
(package private) java.lang.String	field

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

SCORES

Constructor Summary

Constructors

Modifier	Constructor and Description
private	FieldValuesSource(java.lang.String field, java.util.function.LongToDoubleFunction decoder)

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o)
Explanation	explain(LeafReaderContext ctx, int docId, Explanation scoreExplanation) An explanation of the value for the named document.
DoubleValues	getValues(LeafReaderContext ctx, DoubleValues scores) 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.
int	hashCode()
boolean	needsScores() Return true if document scores are needed to calculate values
java.lang.String	toString()

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

constant, fromDoubleField, fromField, fromFloatField, fromIntField, fromLongField, fromScorer, getSortField, toLongValuesSource

Methods inherited from class java.lang.Object

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

Field Detail

field

final java.lang.String field

decoder

final java.util.function.LongToDoubleFunction decoder

Constructor Detail

FieldValuesSource

private FieldValuesSource(java.lang.String field,
                          java.util.function.LongToDoubleFunction decoder)

Method Detail

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in class DoubleValuesSource

toString

public java.lang.String toString()

Specified by:

toString in class DoubleValuesSource

hashCode

public int hashCode()

Specified by:

hashCode in class DoubleValuesSource

getValues

public DoubleValues getValues(LeafReaderContext ctx,
                              DoubleValues scores)
                       throws java.io.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:

java.io.IOException

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

explain

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

Description copied from class: DoubleValuesSource

An explanation of the value for the named document.

Overrides:

explain in class DoubleValuesSource

Parameters:

ctx - the readers context to create the Explanation for.

docId - the document's id relative to the given context's reader

Returns:

an Explanation for the value

Throws:

java.io.IOException - if an IOException occurs