Using getRuntime().exec() within EJB

[Vinoth Selvaraj]

Hi,

Is there any restriction in using getRuntime().exec() within EJB to create a new process. Also, can we create threads from within EJB?

With Regards
Vinoth Selvaraj

[Paul Sturrock]

You can do neither.

From the J2EE Spec.:

The enterprise bean must not attempt to manage threads. The enterprise bean must not attempt
to start, stop, suspend, or resume a thread, or to change a thread�s priority or name. The enterprise
bean must not attempt to manage thread groups.

Calling Runtime.exec() is opening a security hole. Why do you need to do this?
[ December 12, 2006: Message edited by: Paul Sturrock ]

[Vinoth Selvaraj]

The application in which i am working in, has to invoke a perl script in the remote machine and get the results from a file written by it.

So, please suggest, how to implementt this in EJB module. Or alternatively can we have a web component in the server which will handle this requirement.

[Vinoth Selvaraj]

Is there any possibility to implement this requirement from EJB??

[Deepa Raja]

In the MDB,
Runtime javaRuntime = Runtime.getRuntime();
Process p = javaRuntime.exec(jobName );
p.waitFor();
return p.exitValue();
This will call your job which is specified. It will work.
But i dont know that it would be a right choice.(Security)