EJB not recognized in enterprise application - jsf

Question

I am working on Eclipse and I want to create an enterprise application using Glassfish and MySQL.
I created a Enterprise Application Project, with EJB and WEB modules, named WeatherEJB and WeatherWeb.
In the WeatherEJB project I generated entities from tables, using JPA and also I created a stateless remote session bean, called CountryDAO, which implements CountryDAOBean, in order to wrap over the generated entity Country.
In the WeatherWeb project I added references to the WeatherEJB project in the Java Build bath, project references and module dependencies.
Then, in the WeatherWeb project, I created a managed bean called CountryController (at 'request' scope), which looks like this:
import javax.ejb.EJB;
import model.Country;
import service.CountryDAO;
public class CountryController
{
#EJB
CountryDAO countryDao;
private Country country;
public CountryController()
{
country = new Country();
}
public String saveCountry()
{
String returnValue = "success";
try
{
countryDao.saveCountry(country);
}
catch (Exception e){
e.printStackTrace();
returnValue = "failure";
}
return returnValue;
}
public Country getCountry(){
return country;
}
public void setCountry(Country country){
this.country = country;
}
}
Although I can deploy successfully the application on Glassfish, when I try to access a jsf that uses the CountryController, I get the following errors:
type Exception report
message
descriptionThe server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: javax.faces.FacesException: com.sun.enterprise.InjectionException: Exception attempting to inject Unresolved Ejb-Ref managedBeans.CountryController/countryDao#jndi: service.CountryDAO#null#service.CountryDAO#Session#null into class managedBeans.CountryController
root cause
javax.faces.FacesException: javax.faces.FacesException: com.sun.enterprise.InjectionException: Exception attempting to inject Unresolved Ejb-Ref managedBeans.CountryController/countryDao#jndi: service.CountryDAO#null#service.CountryDAO#Session#null into class managedBeans.CountryController
root cause
javax.faces.FacesException: com.sun.enterprise.InjectionException: Exception attempting to inject Unresolved Ejb-Ref managedBeans.CountryController/countryDao#jndi: service.CountryDAO#null#service.CountryDAO#Session#null into class managedBeans.CountryController
root cause
com.sun.enterprise.InjectionException: Exception attempting to inject Unresolved Ejb-Ref managedBeans.CountryController/countryDao#jndi: service.CountryDAO#null#service.CountryDAO#Session#null into class managedBeans.CountryController
root cause
javax.naming.NameNotFoundException: service.CountryDAO#service.CountryDAO not found
What am I missing? or what am I doing wrong?

Answer 1

Actually, instead of the implementation class:
#EJB
CountryDAO countryDao;
I should have used the interface:
#EJB
CountryDAOBean countryDao;