Passing runtime parameters to EJB

[Douglas Kent]

Hello,
I need to pass some parameters to my stateless session EJB (mail server info) at creation. Have looked in the associated deployment descriptors (ejb-jar.xml, etc) and see that there is no extensibility there. Anyone have any ideas about how to do this?

[Steve Chernyak]

We use properties files

[Marcos Maia]

Hi,
you can use from the ejb-jar.xml dd:

 
<env-entry>
        <env-entry-name>host</env-entry-name>
<env-entry-type>java.lang.String </env-entry-type>
<env-entry-value>192.168.0.1</env-entry-value>
      </env-entry>
<env-entry>
        <env-entry-name>port</env-entry-name>
<env-entry-type>java.lang.String </env-entry-type>
<env-entry-value>8001</env-entry-value>
      </env-entry>
 

then from your implementation:

  
InitialContext ic = new InitialContext();
String host = (String) (ic.lookup("java:/comp/env/host"));
String port = (String)(ic.lookup("java:/comp/env/port"));

regards.
[ June 14, 2002: Message edited by: Marcos Maia ]

[seshu kumar]

One Problem with setting these in the descriptor as env entries is, that it might be necessary to redeploy the app in the appserver(for changes).
(Unless of course the Appserver allows you to edit the descriptor while the App is running.
I worked on iPlanet and it requires a redeploy.
I think weblogic allows you to edit descriptors through admin console.Correct me If I'm wrong!
)
Properties file seems to be more easier to manage.

[Marcos Maia]

Originally posted by seshu kumar:
One Problem with setting these in the descriptor as env entries is, that it might be necessary to redeploy the app in the appserver(for changes).
(Unless of course the Appserver allows you to edit the descriptor while the App is running.
I worked on iPlanet and it requires a redeploy.
I think weblogic allows you to edit descriptors through admin console.Correct me If I'm wrong!
)
Properties file seems to be more easier to manage.

Hi,
Yes, you�re wrigth about WebLogic 6x, you can edit the dd through the admin console.

[Malli Raman]

Is it possible to pass runtime properties for a servlet.
Regards,
Raman.

[Tim Holloway]

Originally posted by Malli Subramanian Raman:
[QB]Is it possible to pass runtime properties for a servlet.

If it wasn't, Struts wouldn't work.
Both properties files and the web.xml file are available, in addition to the runtime environmental sources such as JNDI.