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 float field values from the FieldCache using getFloats() and makes those values available as other numeric types, casting as needed.

Field Summary

protected FieldCache.DoubleParser

parser

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

cache, field

Constructor Summary

DoubleFieldSource(String field)

DoubleFieldSource(String field, FieldCache.DoubleParser parser)

Method Summary

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

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

Field Detail

parser

protected final FieldCache.DoubleParser parser

Constructor Detail

DoubleFieldSource

public DoubleFieldSource(String field)

DoubleFieldSource

public DoubleFieldSource(String field,
                         FieldCache.DoubleParser parser)

Method Detail

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