org.apache.lucene.queries.function.valuesource

Class MultiValuedDoubleFieldSource

java.lang.Object

org.apache.lucene.queries.function.ValueSource

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

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

org.apache.lucene.queries.function.valuesource.MultiValuedDoubleFieldSource

public class MultiValuedDoubleFieldSource
extends DoubleFieldSource

Obtains double field values from LeafReader.getSortedNumericDocValues(java.lang.String) and using a SortedNumericSelector it gives a single-valued ValueSource view of a field.

Field Summary

Fields

Modifier and Type	Field and Description
protected SortedNumericSelector.Type	selector

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

field

Constructor Summary

Constructors

Constructor and Description
MultiValuedDoubleFieldSource(String field, SortedNumericSelector.Type selector)

Method Summary

Modifier and Type	Method and Description
String	description() description of field, used in explain()
boolean	equals(Object o)
protected NumericDocValues	getNumericDocValues(Map context, LeafReaderContext readerContext)
SortField	getSortField(boolean reverse) EXPERIMENTAL: This method is subject to change.
int	hashCode()

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

getValues

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

getField

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

asDoubleValuesSource, asLongValuesSource, createWeight, fromDoubleValuesSource, newContext, toString

Methods inherited from class java.lang.Object

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

Field Detail

selector

protected final SortedNumericSelector.Type selector

Constructor Detail

MultiValuedDoubleFieldSource

public MultiValuedDoubleFieldSource(String field,
                                    SortedNumericSelector.Type selector)

Method Detail

getSortField

public SortField getSortField(boolean reverse)

Description copied from class: ValueSource

EXPERIMENTAL: This method is subject to change.

Get the SortField for this ValueSource. Uses the ValueSource.getValues(java.util.Map, org.apache.lucene.index.LeafReaderContext) to populate the SortField.

Overrides:

getSortField in class DoubleFieldSource

Parameters:

reverse - true if this is a reverse sort.

Returns:

The SortField for the ValueSource

description

public String description()

Description copied from class: ValueSource

description of field, used in explain()

Overrides:

description in class DoubleFieldSource

getNumericDocValues

protected NumericDocValues getNumericDocValues(Map context,
                                               LeafReaderContext readerContext)
                                        throws IOException

Overrides:

getNumericDocValues in class DoubleFieldSource

Throws:

IOException

equals

public boolean equals(Object o)

Overrides:

equals in class DoubleFieldSource

hashCode

public int hashCode()

Overrides:

hashCode in class DoubleFieldSource