# Hierarchy For Package org.apache.cassandra.io.util

Package Hierarchies:

- All Packages

## Class Hierarchy

- java.lang.Object
  - org.apache.cassandra.io.util.AbstractReaderFileProxy (implements org.apache.cassandra.io.util.ReaderFileProxy)
    - org.apache.cassandra.io.util.CompressedChunkReader (implements org.apache.cassandra.io.util.ChunkReader)
      - org.apache.cassandra.io.util.CompressedChunkReader.Mmap
      - org.apache.cassandra.io.util.CompressedChunkReader.Standard
  - org.apache.cassandra.io.util.BufferManagingRebufferer (implements org.apache.cassandra.io.util.Rebufferer, org.apache.cassandra.io.util.Rebufferer.BufferHolder)
    - org.apache.cassandra.io.util.BufferManagingRebufferer.Aligned
    - org.apache.cassandra.io.util.BufferManagingRebufferer.Unaligned
  - org.apache.cassandra.io.util.ChecksummedRandomAccessReader
  - org.apache.cassandra.io.util.ChecksumWriter
  - org.apache.cassandra.io.util.DataIntegrityMetadata
  - org.apache.cassandra.io.util.DataIntegrityMetadata.ChecksumValidator (implements java.io.Closeable)
  - org.apache.cassandra.io.util.DataIntegrityMetadata.FileDigestValidator (implements java.io.Closeable)
  - org.apache.cassandra.io.util.FileHandle.Builder (implements java.lang.AutoCloseable)
  - org.apache.cassandra.io.util.FileUtils
  - java.io.InputStream (implements java.io.Closeable)
    - org.apache.cassandra.io.util.FastByteArrayInputStream
    - java.io.FilterInputStream
      - java.io.DataInputStream (implements java.io.DataInput)
        - org.apache.cassandra.io.util.DataInputPlus.DataInputStreamPlus (implements org.apache.cassandra.io.util.DataInputPlus)
      - org.apache.cassandra.io.util.LengthAvailableInputStream
      - org.apache.cassandra.io.util.RewindableDataInputStreamPlus (implements java.io.Closeable, org.apache.cassandra.io.util.RewindableDataInput)
      - org.apache.cassandra.io.util.TrackedInputStream (implements org.apache.cassandra.io.util.BytesReadTracker)
    - org.apache.cassandra.io.util.RebufferingInputStream (implements java.io.Closeable, org.apache.cassandra.io.util.DataInputPlus)
      - org.apache.cassandra.io.util.DataInputBuffer
        - org.apache.cassandra.io.util.FileSegmentInputStream (implements org.apache.cassandra.io.util.FileDataInput)
      - org.apache.cassandra.io.util.MemoryInputStream (implements java.io.DataInput)
      - org.apache.cassandra.io.util.NIODataInputStream
      - org.apache.cassandra.io.util.RandomAccessReader (implements org.apache.cassandra.io.util.FileDataInput)
  - org.apache.cassandra.io.util.LimitingRebufferer (implements org.apache.cassandra.io.util.Rebufferer, org.apache.cassandra.io.util.Rebufferer.BufferHolder)
  - org.apache.cassandra.io.util.Memory (implements java.lang.AutoCloseable)
    - org.apache.cassandra.io.util.SafeMemory (implements org.apache.cassandra.utils.concurrent.SharedCloseable)
  - org.apache.cassandra.io.util.MmappedRegions.Region (implements org.apache.cassandra.io.util.Rebufferer.BufferHolder)
  - org.apache.cassandra.io.util.MmappedRegions.Tidier (implements org.apache.cassandra.utils.concurrent.RefCounted.Tidy)
  - java.io.OutputStream (implements java.io.Closeable, java.io.Flushable)
    - org.apache.cassandra.io.util.DataOutputStreamPlus (implements org.apache.cassandra.io.util.DataOutputPlus)
      - org.apache.cassandra.io.util.BufferedDataOutputStreamPlus
        - org.apache.cassandra.io.util.DataOutputBuffer
          - org.apache.cassandra.io.util.DataOutputBufferFixed
          - org.apache.cassandra.io.util.SafeMemoryWriter
        - org.apache.cassandra.io.util.SequentialWriter (implements org.apache.cassandra.utils.concurrent.Transactional)
          - org.apache.cassandra.io.util.ChecksummedSequentialWriter
      - org.apache.cassandra.io.util.UnbufferedDataOutputStreamPlus
        - org.apache.cassandra.io.util.WrappedDataOutputStreamPlus
    - org.apache.cassandra.io.util.MemoryOutputStream
  - org.apache.cassandra.io.util.RewindableDataInputStreamPlus.RewindableDataInputPlusMark (implements org.apache.cassandra.io.util.DataPosition)
  - org.apache.cassandra.io.util.SequentialWriter.BufferedFileWriterMark (implements org.apache.cassandra.io.util.DataPosition)
  - org.apache.cassandra.io.util.SequentialWriterOption
  - org.apache.cassandra.io.util.SequentialWriterOption.Builder
  - org.apache.cassandra.utils.concurrent.SharedCloseableImpl (implements org.apache.cassandra.utils.concurrent.SharedCloseable)
    - org.apache.cassandra.io.util.ChannelProxy
    - org.apache.cassandra.io.util.FileHandle
    - org.apache.cassandra.io.util.MmappedRegions
  - org.apache.cassandra.io.util.SpinningDiskOptimizationStrategy (implements org.apache.cassandra.io.util.DiskOptimizationStrategy)
  - org.apache.cassandra.io.util.SsdDiskOptimizationStrategy (implements org.apache.cassandra.io.util.DiskOptimizationStrategy)
  - java.lang.Throwable (implements java.io.Serializable)
    - java.lang.Exception
      - java.lang.RuntimeException
        - org.apache.cassandra.io.util.CorruptFileException
  - org.apache.cassandra.io.util.TrackedDataInputPlus (implements org.apache.cassandra.io.util.BytesReadTracker, org.apache.cassandra.io.util.DataInputPlus)
  - org.apache.cassandra.utils.concurrent.Transactional.AbstractTransactional (implements org.apache.cassandra.utils.concurrent.Transactional)
    - org.apache.cassandra.io.util.SequentialWriter.TransactionalProxy
      - org.apache.cassandra.io.util.ChecksummedSequentialWriter.TransactionalProxy

## Interface Hierarchy

- java.lang.AutoCloseable
  - java.io.Closeable
    - org.apache.cassandra.io.util.FileDataInput (also extends org.apache.cassandra.io.util.RewindableDataInput)
  - org.apache.cassandra.io.util.ReaderFileProxy
    - org.apache.cassandra.io.util.Rebufferer
    - org.apache.cassandra.io.util.RebuffererFactory
      - org.apache.cassandra.io.util.ChunkReader
- org.apache.cassandra.io.util.BytesReadTracker
- java.io.DataInput
  - org.apache.cassandra.io.util.DataInputPlus
    - org.apache.cassandra.io.util.RewindableDataInput
      - org.apache.cassandra.io.util.FileDataInput (also extends java.io.Closeable)
- java.io.DataOutput
  - org.apache.cassandra.io.util.DataOutputPlus
- org.apache.cassandra.io.util.DataPosition
- org.apache.cassandra.io.util.DiskOptimizationStrategy
- org.apache.cassandra.io.util.Rebufferer.BufferHolder