# Hierarchy For Package org.apache.lucene.codecs

Package Hierarchies:

- All Packages

## Class Hierarchy

- java.lang.Object
  - org.apache.lucene.codecs.Codec (implements org.apache.lucene.util.NamedSPILoader.NamedSPI)
    - org.apache.lucene.codecs.FilterCodec
  - org.apache.lucene.codecs.CodecUtil
  - org.apache.lucene.codecs.CompetitiveImpactAccumulator
  - org.apache.lucene.codecs.CompoundFormat
  - org.apache.lucene.store.Directory (implements java.io.Closeable)
    - org.apache.lucene.codecs.CompoundDirectory
  - org.apache.lucene.codecs.DocValuesConsumer (implements java.io.Closeable)
  - org.apache.lucene.codecs.DocValuesFormat (implements org.apache.lucene.util.NamedSPILoader.NamedSPI)
  - org.apache.lucene.codecs.DocValuesProducer (implements java.io.Closeable)
  - org.apache.lucene.codecs.FieldInfosFormat
  - org.apache.lucene.index.Fields (implements java.lang.Iterable<T>)
    - org.apache.lucene.codecs.FieldsProducer (implements java.io.Closeable)
  - org.apache.lucene.codecs.FieldsConsumer (implements java.io.Closeable)
  - org.apache.lucene.codecs.FlatVectorsFormat
  - org.apache.lucene.codecs.FlatVectorsReader (implements org.apache.lucene.util.Accountable, java.io.Closeable)
  - org.apache.lucene.codecs.FlatVectorsWriter (implements org.apache.lucene.util.Accountable, java.io.Closeable)
  - org.apache.lucene.codecs.KnnFieldVectorsWriter<T> (implements org.apache.lucene.util.Accountable)
    - org.apache.lucene.codecs.FlatFieldVectorsWriter<T>
  - org.apache.lucene.codecs.KnnVectorsFormat (implements org.apache.lucene.util.NamedSPILoader.NamedSPI)
  - org.apache.lucene.codecs.KnnVectorsReader (implements org.apache.lucene.util.Accountable, java.io.Closeable)
  - org.apache.lucene.codecs.KnnVectorsWriter (implements org.apache.lucene.util.Accountable, java.io.Closeable)
    - org.apache.lucene.codecs.BufferingKnnVectorsWriter
  - org.apache.lucene.codecs.KnnVectorsWriter.MergedVectorValues
  - org.apache.lucene.codecs.LiveDocsFormat
  - org.apache.lucene.codecs.MultiLevelSkipListReader (implements java.io.Closeable)
  - org.apache.lucene.codecs.MultiLevelSkipListWriter
  - org.apache.lucene.codecs.MutablePointTree (implements org.apache.lucene.index.PointValues.PointTree)
  - org.apache.lucene.codecs.NormsConsumer (implements java.io.Closeable)
  - org.apache.lucene.codecs.NormsFormat
  - org.apache.lucene.codecs.NormsProducer (implements java.io.Closeable)
  - org.apache.lucene.codecs.PointsFormat
  - org.apache.lucene.codecs.PointsReader (implements java.io.Closeable)
  - org.apache.lucene.codecs.PointsWriter (implements java.io.Closeable)
  - org.apache.lucene.codecs.PostingsFormat (implements org.apache.lucene.util.NamedSPILoader.NamedSPI)
  - org.apache.lucene.codecs.PostingsReaderBase (implements java.io.Closeable)
  - org.apache.lucene.codecs.PostingsWriterBase (implements java.io.Closeable)
    - org.apache.lucene.codecs.PushPostingsWriterBase
  - org.apache.lucene.codecs.SegmentInfoFormat
  - org.apache.lucene.index.StoredFields
    - org.apache.lucene.codecs.StoredFieldsReader (implements java.lang.Cloneable, java.io.Closeable)
  - org.apache.lucene.codecs.StoredFieldsFormat
  - org.apache.lucene.codecs.StoredFieldsWriter (implements org.apache.lucene.util.Accountable, java.io.Closeable)
  - org.apache.lucene.index.StoredFieldVisitor
    - org.apache.lucene.codecs.StoredFieldsWriter.MergeVisitor
  - org.apache.lucene.index.TermState (implements java.lang.Cloneable)
    - org.apache.lucene.index.OrdTermState
      - org.apache.lucene.codecs.BlockTermState
  - org.apache.lucene.codecs.TermStats
  - org.apache.lucene.index.TermVectors
    - org.apache.lucene.codecs.TermVectorsReader (implements java.lang.Cloneable, java.io.Closeable)
  - org.apache.lucene.codecs.TermVectorsFormat
  - org.apache.lucene.codecs.TermVectorsWriter (implements org.apache.lucene.util.Accountable, java.io.Closeable)

## Interface Hierarchy

- org.apache.lucene.codecs.HnswGraphProvider