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Local / Remote / Web Service which one to invoke?

ahmad namini
Ranch Hand

Joined: Aug 29, 2002
Posts: 52
Hi all:
I am writing a P2P application using JBoss 3.20 (EJB 2.0) with Axis web services.
Every stateless session bean has a local and remote interface, as well as a proxy which can be invoked via a web service.
For performance, I am constantly invoking logic which does the following:
1. If the method required is local, invoke the local interface of the EJB.
2. If the method reqired is remote, invoke the remote interface of the EJB. If for any reason, JNDI port not open in the firewall, RMI call does not work (typically the call will timeout), invoke the method as a web service.
Obviously for performance, the local call is the best, followed by the remote call, and then the web service call. However, I cannot be certain that I can invoke a remote RMI call. However, I can be certain that the web service (over Http) will work.
My questions are as follows:
1. Is there a nice pattern, which incorporates the above stated details; and
2. Is it possible to 'ping' the JNDI or RMI port to see if a Remote call will work without having to rely on a timeout?
Thanks all.
[ February 03, 2003: Message edited by: Ahmad Namini ]

-Ahmad<br />Sun Certified Java Developer (SCJD)<br />Sun Certified Java Programmer (SCJP)<p>"You got to be careful if you don't know where you're going, because you might not get there." -Yogi Berra
Mark Lybarger
Ranch Hand

Joined: Dec 19, 2003
Posts: 72
your post is fairly dated, but i'm searching for something of the same. have you found a pattern to implement?
I agree. Here's the link:
subject: Local / Remote / Web Service which one to invoke?