how to initialize a stateless session bean in jboss 7?

[sodarfish]

hi guys,  I created a simple slsb , and do some initialization in the constructor ,  but when i deploy it, i found that it does not get initialized.

I know @singleton and @startup of JavaEE 6 can do this, but i just want to know is there any other solution  ?   because my application uses Javaee 5 .

I used websphere before, and there is a configation called  start-at-app-start  which allows an ejb get initialized when application start.  Is there something similar to that in

Jboss ?

@Stateless(name= "ApplicationController")

public class ApplicationControllerBean implements ApplicationController {

  /**
   * 
   */
  protected Logger logger= Logger.getLogger( this.getClass());
  protected static ApplicationContext context;

  /**
   * 
   */

  public ApplicationControllerBean() {
    initApplicationContext();
  }

  /**
   * 
   */
  protected void initApplicationContext() {
      System.out.println("Initializing.....");
    }
  }

  public String status() {
    return String.valueOf( System.currentTimeMillis());
  }

}

Thanks !

[wdfink]

It is the responsibillity of the container whether and when to create a SLSB. Here it will be created on first use.

I'm not sure whether there is an option to prefill a pool which create the beans. If I find time I'll have a look.

BTW what you try to achieve with this, the bean should be Stateless.

[ozizka]

In Java EE 5, there isn't a way to trigger a EJB on application deployment. There is a way for doing this in Java EE 6 with @Singleton @Startup beans.

For Java EE 5, the easiest way to get similar functionality is to package your application as a .ear with a .war module (web) and a EJB module. You can then have  a ServletContextListener which will be triggered when the web application is deployed.

Also, search for "startup" (without the quotes) in this EJB forum and you will find some interesting discussions (on page 1 and 2) related to this.

http://www.coderanch.com/t/517685/EJB-JEE/java/Deploy-or-application-start-up

[sodarfish]

thanks for your reply!  i have the same idea as yours, but i didn't find a way to prefill the pool in Jboss 7.x

I try to achieve with that because i want to prepare some (static) data before i use it.

[sodarfish]

I tried that method and it  works , thanks a lot  for your help!

maybe the @Resource annotation  can help me to initialize a bean?   so that i can initialize some  sharing  data  before  use.

public class  TheTriggerBean {

      @Resource

   ApplicationController applicationControllerBean;

      .....

}