# Hierarchy For Package org.apache.sysds.runtime.compress.io

Package Hierarchies:

- All Packages

## Class Hierarchy

- java.lang.Object
  - org.apache.sysds.runtime.compress.io.CompressedWriteBlock (implements java.io.Serializable, org.apache.hadoop.io.WritableComparable<T>)
  - org.apache.sysds.runtime.compress.io.CompressUnwrap (implements org.apache.spark.api.java.function.Function<T1,R>)
  - org.apache.sysds.runtime.compress.io.CompressWrap (implements org.apache.spark.api.java.function.Function<T1,R>)
  - org.apache.sysds.runtime.compress.io.DictWritable (implements java.io.Serializable, org.apache.hadoop.io.Writable)
  - org.apache.sysds.runtime.compress.io.DictWritable.K (implements java.io.Serializable, org.apache.hadoop.io.Writable)
  - org.apache.sysds.runtime.io.MatrixReader
    - org.apache.sysds.runtime.compress.io.ReaderCompressed
  - org.apache.sysds.runtime.io.MatrixWriter
    - org.apache.sysds.runtime.compress.io.WriterCompressed

## Interface Hierarchy

- org.apache.sysds.runtime.compress.io.ReaderSparkCompressed