## 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.lucene3x | Codec to support Lucene 3.x indexes (readonly)
org.apache.lucene.codecs.lucene40 | Lucene 4.0 file format.
org.apache.lucene.codecs.lucene41 | Lucene 4.1 file format.
org.apache.lucene.codecs.lucene42 | Lucene 4.2 file format.
org.apache.lucene.codecs.perfield | Postings format that can delegate to different formats per-field.
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 and 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` | `PostingsFormat` Encodes/decodes terms, postings, and proximity data.

### Uses of NamedSPILoader.NamedSPI in org.apache.lucene.codecs.lucene3x

Classes in org.apache.lucene.codecs.lucene3x that implement NamedSPILoader.NamedSPI
Modifier and Type | Class and Description
--- | ---
`class` | `Lucene3xCodec` Deprecated. Only for reading existing 3.x indexes

### Uses of NamedSPILoader.NamedSPI in org.apache.lucene.codecs.lucene40

Classes in org.apache.lucene.codecs.lucene40 that implement NamedSPILoader.NamedSPI
Modifier and Type | Class and Description
--- | ---
`class` | `Lucene40Codec` Deprecated. Only for reading old 4.0 segments
`class` | `Lucene40DocValuesFormat` Deprecated. Only for reading old 4.0 and 4.1 segments
`class` | `Lucene40PostingsFormat` Deprecated. Only for reading old 4.0 segments

### Uses of NamedSPILoader.NamedSPI in org.apache.lucene.codecs.lucene41

Classes in org.apache.lucene.codecs.lucene41 that implement NamedSPILoader.NamedSPI
Modifier and Type | Class and Description
--- | ---
`class` | `Lucene41Codec` Deprecated. Only for reading old 4.0 segments
`class` | `Lucene41PostingsFormat` Lucene 4.1 postings format, which encodes postings in packed integer blocks for fast decode.

### Uses of NamedSPILoader.NamedSPI in org.apache.lucene.codecs.lucene42

Classes in org.apache.lucene.codecs.lucene42 that implement NamedSPILoader.NamedSPI
Modifier and Type | Class and Description
--- | ---
`class` | `Lucene42Codec` Implements the Lucene 4.2 index format, with configurable per-field postings and docvalues formats.
`class` | `Lucene42DocValuesFormat` Lucene 4.2 DocValues format.

### 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 and Description
--- | ---
`class` | `PerFieldDocValuesFormat` Enables per field docvalues support.
`class` | `PerFieldPostingsFormat` Enables per field postings support.

### 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 and Description
--- | ---
`class` | `NamedSPILoader<S extends NamedSPILoader.NamedSPI>` Helper class for loading named SPIs from classpath (e.g.