## Uses of Interface
org.apache.lucene.util.NamedSPILoader.NamedSPI

- Packages that use NamedSPILoader.NamedSPI
  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.lucene99 | Lucene 9.9 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.
  org.apache.lucene.search | Code to search indices.
  org.apache.lucene.util | Some utility classes.

- - ### Uses of NamedSPILoader.NamedSPI in org.apache.lucene.codecs

    Classes in org.apache.lucene.codecs that implement NamedSPILoader.NamedSPI
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `Codec` | Encodes/decodes an inverted index segment.
    `class` | `DocValuesFormat` | Encodes/decodes per-document values.
    `class` | `FilterCodec` | A codec that forwards all its method calls to another codec.
    `class` | `KnnVectorsFormat` | Encodes/decodes per-document vector and any associated indexing structures required to support nearest-neighbor search
    `class` | `PostingsFormat` | Encodes/decodes terms, postings, and proximity data.

  - ### Uses of NamedSPILoader.NamedSPI in org.apache.lucene.codecs.lucene90

    Classes in org.apache.lucene.codecs.lucene90 that implement NamedSPILoader.NamedSPI
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `Lucene90DocValuesFormat` | Lucene 9.0 DocValues format.

  - ### Uses of NamedSPILoader.NamedSPI in org.apache.lucene.codecs.lucene99

    Classes in org.apache.lucene.codecs.lucene99 that implement NamedSPILoader.NamedSPI
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `Lucene99Codec` | Implements the Lucene 9.9 index format
    `class` | `Lucene99HnswScalarQuantizedVectorsFormat` | Lucene 9.9 vector format, which encodes numeric vector values into an associated graph connecting the documents having values.
    `class` | `Lucene99HnswVectorsFormat` | Lucene 9.9 vector format, which encodes numeric vector values into an associated graph connecting the documents having values.
    `class` | `Lucene99PostingsFormat` | Lucene 9.9 postings format, which encodes postings in packed integer blocks for fast decode.

  - ### Uses of NamedSPILoader.NamedSPI in org.apache.lucene.codecs.perfield

    Classes in org.apache.lucene.codecs.perfield that implement NamedSPILoader.NamedSPI
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `PerFieldDocValuesFormat` | Enables per field docvalues support.
    `class` | `PerFieldKnnVectorsFormat` | Enables per field numeric vector support.
    `class` | `PerFieldPostingsFormat` | Enables per field postings support.

  - ### Uses of NamedSPILoader.NamedSPI in org.apache.lucene.index

    Classes in org.apache.lucene.index that implement NamedSPILoader.NamedSPI
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `SortFieldProvider` | Reads/Writes a named SortField from a segment info file, used to record index sorts

  - ### Uses of NamedSPILoader.NamedSPI in org.apache.lucene.search

    Classes in org.apache.lucene.search that implement NamedSPILoader.NamedSPI
    Modifier and Type | Class | Description
    --- | --- | ---
    `static class` | `SortedNumericSortField.Provider` | A SortFieldProvider for this sort field
    `static class` | `SortedSetSortField.Provider` | A SortFieldProvider for this sort
    `static class` | `SortField.Provider` | A SortFieldProvider for field sorts

  - ### Uses of NamedSPILoader.NamedSPI in org.apache.lucene.util

    Classes in org.apache.lucene.util with type parameters of type NamedSPILoader.NamedSPI
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `NamedSPILoader<S extends NamedSPILoader.NamedSPI>` | Helper class for loading named SPIs from classpath (e.g.