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

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

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

    Subclasses of DocFreqValueSource in org.apache.lucene.queries.function.valuesource
    Modifier and Type | Class and Description
    --- | ---
    `class` | `IDFValueSource` Function that returns `#idf(long, long)` for every document.
    `class` | `TermFreqValueSource` Function that returns `PostingsEnum.freq()` for the supplied term in every document.
    `class` | `TFValueSource` Function that returns `TFIDFSimilarity.tf(float)` for every document.

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