Class Marshaller

java.lang.Object
org.jgroups.util.Marshaller

public class Marshaller extends Object
Title: JGroups Communications Description: Contact me at mail@filip.net Copyright: Copyright (c) 2002 Company: www.filip.net
Version:
1.0 This class marshalls classes, in other words it serializes and deserializes classes to and from object streams. It performs a magic number matching to decrease the number of bytes that are being sent over the wire. If no magic number is available for the class, the classname is sent over instead
Author:
Filip Hanik, Bela Ban
  • Constructor Details

    • Marshaller

      public Marshaller()
  • Method Details

    • read

      public static Externalizable read(ObjectInput in) throws IOException
      reads the magic number, instantiates the class (from the configurator) and invokes the readExternal method on the object. If no magic number is present, the method will read the string and then get the class from the configurator.
      Parameters:
      in - an ObjectInput stream - the stream should be composed as follows:
      [boolean -> int|string -> object data]
      If the boolean is true, then the next value is an int, the magic number.
      If the boolean is false, then the next value is a string (the class name)
      The object data is what the object instance uses to populate its fields
      Throws:
      IOException
    • write

      public static void write(Externalizable inst, ObjectOutput out) throws IOException
      Writes an object to the ObjectOutput stream. If possible, we will send over a magic number instead of the class name so that we transfer less amount of data.
      Parameters:
      inst - - an object instance to be serialized, can not be null
      out - - the ObjectOutput stream we will write the serialized data to
      Throws:
      IOException