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

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

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

  Subclasses of LongFieldSource in org.apache.lucene.queries.function.valuesource
  Modifier and Type
  Class
  Description
  `class`
  `MultiValuedLongFieldSource`
  Obtains long field values from `LeafReader.getSortedNumericDocValues(java.lang.String)` and using a `SortedNumericSelector` it gives a single-valued ValueSource view of a field.