package beans; import java.util.List; import javax.ejb.LocalBean; import javax.ejb.Stateless; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import model.Tema; /** * Session Bean implementation class getConceptoList */ @Stateless @LocalBean public class AdministrationBean { @PersistenceContext EntityManager em; /** * Default constructor. */ public AdministrationBean() { // TODO Auto-generated constructor stub } public List getConceptoList(int idTema) { Tema tema = em.find(Tema.class, idTema); List conceptoList = tema.getConceptoList(); System.out.println(conceptoList.toString()); return conceptoList; } }