org.apache.lucene.queries.function.valuesource

Class VectorValueSource

java.lang.Object

org.apache.lucene.queries.function.ValueSource

org.apache.lucene.queries.function.valuesource.MultiValueSource

org.apache.lucene.queries.function.valuesource.VectorValueSource

public class VectorValueSource
extends MultiValueSource

Converts individual ValueSource instances to leverage the FunctionValues *Val functions that work with multiple values, i.e. FunctionValues.doubleVal(int, double[])

Field Summary

Fields

Modifier and Type	Field and Description
protected List<ValueSource>	sources

Constructor Summary

Constructors

Constructor and Description
VectorValueSource(List<ValueSource> sources)

Method Summary

Modifier and Type	Method and Description
void	createWeight(Map context, IndexSearcher searcher) Implementations should propagate createWeight to sub-ValueSources which can optionally store weight info in the context.
String	description() description of field, used in explain()
int	dimension()
boolean	equals(Object o)
List<ValueSource>	getSources()
FunctionValues	getValues(Map context, LeafReaderContext readerContext) Gets the values for this reader and the context that was previously passed to createWeight().
int	hashCode()
String	name()

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

asDoubleValuesSource, asLongValuesSource, fromDoubleValuesSource, getSortField, newContext, toString

Methods inherited from class java.lang.Object

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

Field Detail

sources

protected final List<ValueSource> sources

Constructor Detail

VectorValueSource

public VectorValueSource(List<ValueSource> sources)

Method Detail

getSources

public List<ValueSource> getSources()

dimension

public int dimension()

Specified by:

dimension in class MultiValueSource

name

public String name()

getValues

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

Description copied from class: ValueSource

Gets the values for this reader and the context that was previously passed to createWeight(). The values must be consumed in a forward docID manner, and you must call this method again to iterate through the values again.

Specified by:

getValues in class ValueSource

Throws:

IOException

createWeight

public void createWeight(Map context,
                         IndexSearcher searcher)
                  throws IOException

Description copied from class: ValueSource

Implementations should propagate createWeight to sub-ValueSources which can optionally store weight info in the context. The context object will be passed to getValues() where this info can be retrieved.

Overrides:

createWeight in class ValueSource

Throws:

IOException

description

public String description()

Description copied from class: ValueSource

description of field, used in explain()

Specified by:

description in class ValueSource

equals

public boolean equals(Object o)

Specified by:

equals in class ValueSource

hashCode

public int hashCode()

Specified by:

hashCode in class ValueSource