How to return Collection from from entity bean to servlet?

SERVLET

public class test extends HttpServlet {

@EJB

private LocalBean lookupBean;

protected void processRequest(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

response.setContentType("text/html;charset=UTF-8");

PrintWriter out = response.getWriter();

for(Item i : lookupBean.getMyCollection() )

{

out.println(i.getItemName());

}

out.close();

}

}

BEAN INTERFACE

public interface BeanLocal {

Collection<Item> getMyCollection();

}

BEAN IMPLEMENTATION

@Stateless()

public class Bean implements BeanLocal {

@PersistenceContext()

private EntityManager em;

public Collection<Item> getMyCollection() {

return em.createQuery("SELECT i from ITEM i").getResultList();

}

and if you create an instance of your servlet you'll have to reinitialize LocalBean

@EJB(name="myejbref", beanInterface=BeanLocal.class)

private BeanLocal lookupBean;

private BeanLocal getLookupBean() {

if(lookupBean == null) {

try {

InitialContext ic = new InitialContext();

lookupBean = (BeanLocal) ic.lookup("java:comp/env/myejbref");

}

catch(Exception e){

System.out.println(e.getMessage());

}

}

return lookupBean;

}

przemek_cha at 2007-7-13 22:19:11 >