Package org.apache.lucene.queries.function.valuesource

Class DoubleFieldSource

java.lang.Object

org.apache.lucene.queries.function.ValueSource

org.apache.lucene.queries.function.valuesource.FieldCacheSource

org.apache.lucene.queries.function.valuesource.DoubleFieldSource

public class DoubleFieldSource
extends FieldCacheSource

Obtains double field values from FieldCache.getDoubles(org.apache.lucene.index.AtomicReader, java.lang.String, boolean) and makes those values available as other numeric types, casting as needed.

Constructor Summary

Constructors

Constructor	Description
DoubleFieldSource(String field)
DoubleFieldSource(String field, FieldCache.DoubleParser parser)

Method Summary

Modifier and Type	Method	Description
String	description()	description of field, used in explain()
boolean	equals(Object o)
FunctionValues	getValues(Map context, AtomicReaderContext readerContext)	Gets the values for this reader and the context that was previously passed to createWeight()
int	hashCode()

Methods inherited from class org.apache.lucene.queries.function.valuesource.FieldCacheSource

getField, getFieldCache

Methods inherited from class org.apache.lucene.queries.function.ValueSource

createWeight, getSortField, newContext, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Details

DoubleFieldSource

public DoubleFieldSource(String field)

DoubleFieldSource

public DoubleFieldSource(String field,
 FieldCache.DoubleParser parser)

Method Details

description

public String description()

Description copied from class: ValueSource

description of field, used in explain()

Overrides:

description in class FieldCacheSource

getValues

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

Description copied from class: ValueSource

Gets the values for this reader and the context that was previously passed to createWeight()

Specified by:

getValues in class ValueSource

Throws:

IOException

equals

public boolean equals(Object o)

Overrides:

equals in class FieldCacheSource

hashCode

public int hashCode()

Overrides:

hashCode in class FieldCacheSource