## Uses of Class
org.apache.lucene.codecs.FieldsProducer

- Packages that use FieldsProducer
  Package | Description
  --- | ---
  org.apache.lucene.codecs | Codecs API: API for customization of the encoding and structure of the index.
  org.apache.lucene.codecs.blocktree | BlockTree terms dictionary.
  org.apache.lucene.codecs.lucene50 | Components from the Lucene 5.0 index format See `org.apache.lucene.codecs.lucene80` for an overview of the index format.
  org.apache.lucene.codecs.perfield | Postings format that can delegate to different formats per-field.
  org.apache.lucene.index | Code to maintain and access indices.

- - ### Uses of FieldsProducer in org.apache.lucene.codecs

    Methods in org.apache.lucene.codecs that return FieldsProducer
    Modifier and Type | Method and Description
    --- | ---
    `abstract FieldsProducer` | PostingsFormat.`fieldsProducer(SegmentReadState state)` Reads a segment.
    `FieldsProducer` | FieldsProducer.`getMergeInstance()` Returns an instance optimized for merging.

  - ### Uses of FieldsProducer in org.apache.lucene.codecs.blocktree

    Subclasses of FieldsProducer in org.apache.lucene.codecs.blocktree
    Modifier and Type | Class and Description
    --- | ---
    `class` | `BlockTreeTermsReader` A block-based terms index and dictionary that assigns terms to variable length blocks according to how they share prefixes.

  - ### Uses of FieldsProducer in org.apache.lucene.codecs.lucene50

    Methods in org.apache.lucene.codecs.lucene50 that return FieldsProducer
    Modifier and Type | Method and Description
    --- | ---
    `FieldsProducer` | Lucene50PostingsFormat.`fieldsProducer(SegmentReadState state)`

  - ### Uses of FieldsProducer in org.apache.lucene.codecs.perfield

    Methods in org.apache.lucene.codecs.perfield that return FieldsProducer
    Modifier and Type | Method and Description
    --- | ---
    `FieldsProducer` | PerFieldPostingsFormat.`fieldsProducer(SegmentReadState state)`

  - ### Uses of FieldsProducer in org.apache.lucene.index

    Fields in org.apache.lucene.index declared as FieldsProducer
    Modifier and Type | Field and Description
    --- | ---
    `FieldsProducer[]` | MergeState.`fieldsProducers` Postings to merge

    Methods in org.apache.lucene.index that return FieldsProducer
    Modifier and Type | Method and Description
    --- | ---
    `FieldsProducer` | FilterCodecReader.`getPostingsReader()`
    `FieldsProducer` | SegmentReader.`getPostingsReader()`
    `abstract FieldsProducer` | CodecReader.`getPostingsReader()` Expert: retrieve underlying FieldsProducer

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