This is the question (from Enthuware):
A stateless session bean S1 uses another stateless session bean S2 and requests a dependency injection using the following statement (contained in S1's code):
@EJB(name="ejb/S2", beanInterface=S2Local.class)
S2Local interface is as follows:
package com.enthu.ejbplus;
import javax.ejb.Local;
@Local
public interface SLocal {
String m1();
}
Given the above, complete the following S2Bean's code so that bean S1 will work as expected.
package com.enthu.ejbplus;
import javax.annotation.*;
import javax.ejb.*;
// insert lines here...
@Resource
SessionContext sctx;
public String m1(){ return "hello!"; }
}
And this are the answers:
1.
@Stateless
public class S2Bean implements S2Local {
2.
@Stateless(name="ejb/S2")
public class S2Bean implements S2Local {
3.
@Stateless
@Local(S2Local.class)
public class S2Bean {
4.
@Stateless(name="ejb/S2")
public class S2Bean {
5.
None of these.
Enthuware says that the correct answer is 2.
My dubt is for number 1, that is excluded with this reason:
This will not work because in the absence of 'name' in @Stateless, this bean will be associated with the name of S2Bean but S1 bean is looking for ejb/S2.
Binding the injected
ejb by name, isn't done with beanName attribute??
The name attribut isn't used to bind an ejb reference to ENC entry name??
Thanks.
Germano
