org.apache.lucene.queries.function.valuesource

Class SimpleFloatFunction

java.lang.Object

org.apache.lucene.queries.function.ValueSource

org.apache.lucene.queries.function.valuesource.SingleFunction

org.apache.lucene.queries.function.valuesource.SimpleFloatFunction

public abstract class SimpleFloatFunction
extends SingleFunction

A simple float function with a single argument

Field Summary

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

source

Constructor Summary

Constructors

Constructor and Description
SimpleFloatFunction(ValueSource source)

Method Summary

Modifier and Type	Method and Description
protected abstract float	func(int doc, FunctionValues vals)
FunctionValues	getValues(java.util.Map context, LeafReaderContext readerContext) Gets the values for this reader and the context that was previously passed to createWeight().

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

createWeight, description, equals, hashCode, 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

Constructor Detail

SimpleFloatFunction

public SimpleFloatFunction(ValueSource source)

Method Detail

func

protected abstract float func(int doc,
                              FunctionValues vals)
                       throws java.io.IOException

Throws:

java.io.IOException

getValues

public FunctionValues getValues(java.util.Map context,
                                LeafReaderContext readerContext)
                         throws java.io.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:

java.io.IOException