# Hierarchy For Package org.apache.lucene.codecs.lucene99

Package Hierarchies:

- All Packages

## Class Hierarchy

- java.lang.Object
  - org.apache.lucene.codecs.KnnVectorsFormat (implements org.apache.lucene.util.NamedSPILoader.NamedSPI)
    - org.apache.lucene.codecs.hnsw.FlatVectorsFormat
      - org.apache.lucene.codecs.lucene99.Lucene99FlatVectorsFormat
      - org.apache.lucene.codecs.lucene99.Lucene99ScalarQuantizedVectorsFormat
    - org.apache.lucene.codecs.lucene99.Lucene99HnswScalarQuantizedVectorsFormat
    - org.apache.lucene.codecs.lucene99.Lucene99HnswVectorsFormat
  - org.apache.lucene.codecs.KnnVectorsReader (implements java.io.Closeable)
    - org.apache.lucene.codecs.hnsw.FlatVectorsReader (implements org.apache.lucene.util.Accountable)
      - org.apache.lucene.codecs.lucene99.Lucene99FlatVectorsReader
      - org.apache.lucene.codecs.lucene99.Lucene99ScalarQuantizedVectorsReader (implements org.apache.lucene.util.quantization.QuantizedVectorsReader)
    - org.apache.lucene.codecs.lucene99.Lucene99HnswVectorsReader (implements org.apache.lucene.codecs.hnsw.HnswGraphProvider, org.apache.lucene.util.quantization.QuantizedVectorsReader)
  - org.apache.lucene.codecs.KnnVectorsWriter (implements org.apache.lucene.util.Accountable, java.io.Closeable)
    - org.apache.lucene.codecs.hnsw.FlatVectorsWriter
      - org.apache.lucene.codecs.lucene99.Lucene99FlatVectorsWriter
      - org.apache.lucene.codecs.lucene99.Lucene99ScalarQuantizedVectorsWriter
    - org.apache.lucene.codecs.lucene99.Lucene99HnswVectorsWriter
  - org.apache.lucene.index.KnnVectorValues
    - org.apache.lucene.index.ByteVectorValues
      - org.apache.lucene.util.quantization.QuantizedByteVectorValues (implements org.apache.lucene.codecs.lucene95.HasIndexSlice)
        - org.apache.lucene.codecs.lucene99.OffHeapQuantizedByteVectorValues
          - org.apache.lucene.codecs.lucene99.OffHeapQuantizedByteVectorValues.DenseOffHeapVectorValues
  - org.apache.lucene.codecs.lucene99.Lucene99ScalarQuantizedVectorScorer (implements org.apache.lucene.codecs.hnsw.FlatVectorsScorer)
  - org.apache.lucene.codecs.SegmentInfoFormat
    - org.apache.lucene.codecs.lucene99.Lucene99SegmentInfoFormat