# Hierarchy For Package org.apache.lucene.backward_codecs.lucene91

Package Hierarchies:

- All Packages

## Class Hierarchy

- java.lang.Object
  - org.apache.lucene.codecs.Codec (implements org.apache.lucene.util.NamedSPILoader.NamedSPI)
    - org.apache.lucene.backward_codecs.lucene91.Lucene91Codec
  - org.apache.lucene.util.hnsw.HnswGraph
    - org.apache.lucene.backward_codecs.lucene91.Lucene91OnHeapHnswGraph
  - org.apache.lucene.codecs.KnnVectorsFormat (implements org.apache.lucene.util.NamedSPILoader.NamedSPI)
    - org.apache.lucene.backward_codecs.lucene91.Lucene91HnswVectorsFormat
  - org.apache.lucene.codecs.KnnVectorsReader (implements java.io.Closeable)
    - org.apache.lucene.backward_codecs.lucene91.Lucene91HnswVectorsReader
  - org.apache.lucene.backward_codecs.lucene91.Lucene91BoundsChecker
    - org.apache.lucene.backward_codecs.lucene91.Lucene91BoundsChecker.Max
    - org.apache.lucene.backward_codecs.lucene91.Lucene91BoundsChecker.Min
  - org.apache.lucene.backward_codecs.lucene91.Lucene91NeighborArray

## Enum Class Hierarchy

- java.lang.Object
  - java.lang.Enum<E> (implements java.lang.Comparable<T>, java.lang.constant.Constable, java.io.Serializable)
    - org.apache.lucene.backward_codecs.lucene91.Lucene91Codec.Mode