# Uses of Class
org.apache.lucene.queries.function.valuesource.ConstNumberSource

Packages that use ConstNumberSource
Package
Description
org.apache.lucene.queries.function.valuesource
A variety of functions to use with FunctionQuery.

- ## Uses of ConstNumberSource in org.apache.lucene.queries.function.valuesource

  Subclasses of ConstNumberSource in org.apache.lucene.queries.function.valuesource
  Modifier and Type
  Class
  Description
  `class`
  `ConstValueSource`
  `ConstValueSource` returns a constant for all documents
  `class`
  `DoubleConstValueSource`
  Function that returns a constant double value for every document.