Package org.apache.avro.file

Class Codec

java.lang.Object
org.apache.avro.file.Codec
Direct Known Subclasses:
BZip2Codec, DeflateCodec, SnappyCodec, XZCodec, ZstandardCodec
public abstract class Codec extends Object
Interface for Avro-supported compression codecs for data files. Note that Codec objects may maintain internal state (e.g. buffers) and are not thread safe.

  • Constructor Details

    • Codec

      public Codec()

  • Method Details

    • getName

      public abstract String getName()
      Name of the codec; written to the file's metadata.

    • compress

      public abstract ByteBuffer compress(ByteBuffer uncompressedData) throws IOException
      Compresses the input data
      Throws:
      IOException

    • decompress

      public abstract ByteBuffer decompress(ByteBuffer compressedData) throws IOException
      Decompress the data
      Throws:
      IOException

    • equals

      public abstract boolean equals(Object other)
      Codecs must implement an equals() method. Two codecs, A and B are equal if: the result of A and B decompressing content compressed by A is the same AND the result of A and B decompressing content compressed by B is the same
      Overrides:
      equals in class Object

    • hashCode

      public abstract int hashCode()
      Codecs must implement a hashCode() method that is consistent with equals().
      Overrides:
      hashCode in class Object

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • computeOffset

      protected static int computeOffset(ByteBuffer data)