Interface Externalizer

    • Method Detail

      • writeExternal

        void writeExternal​(Object subject,
                           ObjectOutput output)
                    throws IOException
        Write the external representation of an object. The object's class and the externalizer's class will already have been written.
        Parameters:
        subject - the object to externalize
        output - the output
        Throws:
        IOException - if an error occurs
      • createExternal

        Object createExternal​(Class<?> subjectType,
                              ObjectInput input)
                       throws IOException,
                              ClassNotFoundException
        Create an instance of a type. The object may then be initialized from input, or that may be deferred to the readExternal() method. Instances may simply delegate the task to the given Creator. Note that this method is called only on the leaf class, so externalizers for non-final classes that initialize the instance from the stream need to be aware of this.
        Parameters:
        subjectType - the type of object to create
        input - the input
        Returns:
        the new instance
        Throws:
        IOException - if an error occurs
        ClassNotFoundException - if a class could not be found during read