Implementing Asynchronous Remote Method Invocation in JavaKatrina

Java's Remote Method Invocation is an example of a synchronous communication mechanism with a well deened protocol. Many software systems require more exibility in their communication mechanisms , including asynchronous communication and delayed referencing of objects (Futures). This paper introduces a novel mechanism allowing Java remote objects to use extended communication protocols without changes to the underlying wire or serialisation protocols. These extensions can be utilised by standard remote objects without additional coding changes and can be incorporated with standard Java clients. This paper explores the possibilities of implementing client controlled versus server controlled asynchronous communication and dynamic selection of protocols through the use of a precompiler for the remote object classes. A discussion of the possibility of integrating Futures and Batched Futures, and any required programming abstractions, into this mechanism is conducted. It is proposed that this mechanism can be used in any object system that is based on Fragmented Objects, which use a stub or proxy to provide transparent access to remote server methods.