Explicit Batching for Distributed Objects

Step 1 - Download BRMI package

Before starting, head over to the Download section and grab BRMI. There are two parts of it, the first is BatchGen toolkit used to automatically generate the client batching interface, the second is BRMI runtime support package.

Step 2 - Using BatchGen

Using BatchGen generator is simple. just download our binary distribution in jar format, then you can invoke it by typing 'java -jar BatchGen.jar -batch' + packagename.classname.

Step 3 - Create the batching interface

Firstly let's create a simple interface for our example program. The code for the legacy RMI program is as follow,

then we can use BatchGen to automatically generate the Batch interface by invoking it as,

C:\Yang\workspace>java -jar BatchGen.jar conditionalTest.RemoteConditionalTest

two interfaces will be generated, they are BRemoteConditionalTest and CRemoteConditionalTest

They will be used as the client stub to communicate with BRMI server runtime.

Step 4 - Service implementation

In this example, the remote services will be implemented as follows,
RemoteConditionalTestImpl

Step 5 - Invoking server

The server can be invoked as follows,
TestServer

Step 6 - Running client

The client can be invoked as follows,
TestClient

Congratulations!

That's it folks! Once you have a legacy RMI application, it's EASY to rewrite it into BRMI one with a performance gain as much as you can imagine.