Package org.apache.accumulo.core.file.rfile.bcfile

Class Utils.Version

  • All Implemented Interfaces:
    Comparable<Utils.Version>
    Enclosing class:
    Utils
    public static final class Utils.Version
extends Object
implements Comparable<Utils.Version>
    A generic Version class. We suggest applications built on top of TFile use this class to maintain version information in their meta blocks. A version number consists of a major version and a minor version. The suggested usage of major and minor version number is to increment major version number when the new storage format is not backward compatible, and increment the minor version otherwise.

    • Constructor Detail

      • Version

        public Version​(DataInput in)
        throws IOException
        Construct the Version object by reading from the input stream.
        Parameters:
        in - input stream
        Throws:
        IOException

      • Version

        public Version​(short major,
               short minor)
        Constructor.
        Parameters:
        major - major version.
        minor - minor version.

    • Method Detail

      • write

        public void write​(DataOutput out)
           throws IOException
        Write the object to a DataOutput. The serialized format of the Version is major version followed by minor version, both as big-endian short integers.
        Parameters:
        out - The DataOutput object.
        Throws:
        IOException

      • size

        public static int size()
        Get the size of the serialized Version object.
        Returns:
        serialized size of the version object.

      • compatibleWith

        public boolean compatibleWith​(Utils.Version other)
        Test compatibility.
        Parameters:
        other - The Version object to test compatibility with.
        Returns:
        true if both versions have the same major version number; false otherwise.

      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class Object