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

Class TFValueSource

java.lang.Object

org.apache.lucene.queries.function.ValueSource

org.apache.lucene.queries.function.valuesource.DocFreqValueSource

org.apache.lucene.queries.function.valuesource.TermFreqValueSource

org.apache.lucene.queries.function.valuesource.TFValueSource

public class TFValueSource
extends TermFreqValueSource

Function that returns TFIDFSimilarity.tf(float) for every document.

Note that the configured Similarity for the field must be a subclass of TFIDFSimilarity

Constructor Summary

Constructors

Constructor	Description
TFValueSource(String field, String val, String indexedField, BytesRef indexedBytes)

Method Summary

Modifier and Type	Method	Description
FunctionValues	getValues(Map context, AtomicReaderContext readerContext)	Gets the values for this reader and the context that was previously passed to createWeight()
String	name()

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

createWeight, description, equals, hashCode

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

getSortField, newContext, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Details

TFValueSource

public TFValueSource(String field,
 String val,
 String indexedField,
 BytesRef indexedBytes)

Method Details

name

public String name()

Overrides:

name in class TermFreqValueSource

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()

Overrides:

getValues in class TermFreqValueSource

Throws:

IOException