How to make a session bean interact with a entity bean?

Question

hi,
An entity bean has been created and tested successfully. Values entered into the test app are successfully entered into the pointbase db.
Now trying to create the same feature through session beans. when the method is invoked, it appears ok, but when the database is queried the values have not been entered. Is there anything that could have been missed or incorrect?
the steps to setting up session bean
1)add code to create for JNDI lookup
public void ejbCreate() {
System.out.println("Entering oneManagerEJB.ejbCreate()");
Context c = null;
Object result = null;
if (this.myoneHome == null) {
try {
c = new InitialContext();
result =
c.lookup("java:comp/env/ejb/one");
myoneHome =
(oneHome)javax.rmi.PortableRemoteObject.narrow(result,
oneHome.class);
catch (Exception e) {System.out.println("Error: "+
            e); }
2) add business method to enter values into entity bean
public void createone(int number) {
System.out.println("Entering ");
try {
one oneinfo =
myoneHome.create(number);
} catch (Exception e) {
// Join the following two lines in the Source Editor
System.out.println("Error in " + e);
// Join the following two lines in the Source Editor
System.out.println("Leaving ");
3) declare variables and namings
import javax.naming.*;
private oneHome myoneHome;
4) add reference to logical session bean
ejb/one
5) create test app and add entity bean "one" to module. check mappings.
run app

Answer 1

I would do several things which will help track down the problem:
1. Where you have println statements you may want to change these to exceptions, the session bean won't really work if these problems occur and may silently fail. For example, throw a runtime exeption or EJBException to indicate that the entity bean home interface cannot be found.
2. When you create the test application you should replace the ejb module which is automatically created with the ejb module or module(s) containing both of the ejb's. This will ensure that the configuration is preserved. The test application is a standard J2EE application, so modules can be added (you could even have multiple test applications each testing a different ejb, make sure that you use different context roots).
Chris