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

- Packages that use DocValuesProducer
  Package | Description
  --- | ---
  org.apache.lucene.codecs | Codecs API: API for customization of the encoding and structure of the index.
  org.apache.lucene.codecs.lucene90 | Lucene 9.0 file 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 DocValuesProducer in org.apache.lucene.codecs

    Methods in org.apache.lucene.codecs that return DocValuesProducer
    Modifier and Type | Method | Description
    --- | --- | ---
    `abstract DocValuesProducer` | DocValuesFormat.`fieldsProducer​(SegmentReadState state)` | Returns a `DocValuesProducer` to read docvalues from the index.
    `DocValuesProducer` | DocValuesProducer.`getMergeInstance()` | Returns an instance optimized for merging.

    Methods in org.apache.lucene.codecs with parameters of type DocValuesProducer
    Modifier and Type | Method | Description
    --- | --- | ---
    `abstract void` | DocValuesConsumer.`addBinaryField​(FieldInfo field, DocValuesProducer valuesProducer)` | Writes binary docvalues for a field.
    `abstract void` | DocValuesConsumer.`addNumericField​(FieldInfo field, DocValuesProducer valuesProducer)` | Writes numeric docvalues for a field.
    `abstract void` | DocValuesConsumer.`addSortedField​(FieldInfo field, DocValuesProducer valuesProducer)` | Writes pre-sorted binary docvalues for a field.
    `abstract void` | DocValuesConsumer.`addSortedNumericField​(FieldInfo field, DocValuesProducer valuesProducer)` | Writes pre-sorted numeric docvalues for a field
    `abstract void` | DocValuesConsumer.`addSortedSetField​(FieldInfo field, DocValuesProducer valuesProducer)` | Writes pre-sorted set docvalues for a field

  - ### Uses of DocValuesProducer in org.apache.lucene.codecs.lucene90

    Methods in org.apache.lucene.codecs.lucene90 that return DocValuesProducer
    Modifier and Type | Method | Description
    --- | --- | ---
    `DocValuesProducer` | Lucene90DocValuesFormat.`fieldsProducer​(SegmentReadState state)` |

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

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

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

    Subclasses of DocValuesProducer in org.apache.lucene.index
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `EmptyDocValuesProducer` | Abstract base class implementing a `DocValuesProducer` that has no doc values.

    Fields in org.apache.lucene.index declared as DocValuesProducer
    Modifier and Type | Field | Description
    --- | --- | ---
    `DocValuesProducer[]` | MergeState.`docValuesProducers` | DocValues producers being merged

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