Calling native C++ legacy program from Message Driven Bean

[waikhom]

Hi,

Could you please help me out on this problem:

I am having a C++ program which does mathematical calculation and whan to reuse it in my JEE application. I thought of using MDB and call this C++ code using JNI. Does JBoss support calling native programs using JNI? I heard that using JNI call from EJB is not supported by specification.

I also thought of keeping the C++ code as stand alone application by writing a C++ daemon program which will listen to message queue and process the request and send the response back to my J2EE env. This sounds interesting but since this is not in a container, there are many issues like fault tolerance and clustering of this C++ code in production env.

If I can direct call this C++ code using JNI.. I can deploy it on production with all the advantages of having JBoss server.

Please help me out on this issue.

Thanks,

Waikhom

[dimitris]

JBoss will know nothing if you use JNI, so it's really up to you. The risk of JNI is that you can always screw up the whole JVM if you are not carefull.

JBoss itself, doesn't use JNI, except for the embedded JBoss Web that has optional native connectors.

[waikhom]

You mean JBoss will support calling JNI native C++ program? What is your opinion in this kind of scenarion? I am looking for an architectural solution.

Thanks,
Waikhom

[dimitris]

How you define "will support"? There is no much difference if you use JNI in a standalone application or inside an application server.