Hi folks,
I've searched the forum, but I didn't find a topic solving my problem.
I modified the booking example to test the capabilities of Seam. I have to say,
Seam is very nice.
As I said, I modified the booking example. I left the LoginAction as it was.
After logging in, the user sees a personalized welcome message. The Name is
retrieved from a database. It works fine. The User enters his token and is
welcomed with his name.
A panelNavigation2 (nested in a f:view) displays some sort of navigation in the
sidebar. As you see, I use myFaces. One of the navigation Items calls a method
in a stateless bean, where I want the user component to be injected. But this
doesn't work. Debugging this code reveals that as soon as the called method is
invoked, user equals null. I don't know, what's wrong with my code. It's
similar to the booking example (i.e. ChangePasswordAction).
User.java:
package myprog.entities;
|
| import java.io.Serializable;
|
| import javax.persistence.Column;
| import javax.persistence.Entity;
| import javax.persistence.Id;
| import javax.persistence.Table;
|
| import org.hibernate.validator.Length;
| import org.hibernate.validator.NotNull;
| import org.jboss.seam.annotations.Name;
| import org.jboss.seam.annotations.Scope;
| import static org.jboss.seam.ScopeType.SESSION;
|
| @Entity
| @Table(name="USERS")
| @Name("user")
| @Scope(SESSION)
| public class User implements Serializable {
| private String m_ID;
| private String m_Name;
| private String m_Phone;
| private String m_Email;
| private int m_isDeveloper;
| private int m_isTester;
| private Integer m_isAdmin;
| private String m_Password;
| private String m_TOTRoot;
| private String m_PWToken;
| private Integer m_isQPV;
|
| public User(String p_id, String p_name, String p_password, String
p_email, String p_phone) {
| super();
| m_ID = p_id;
| m_Name = p_name;
| m_Password = p_password;
| m_Email = p_email;
| m_Phone = p_phone;
| }
|
| public User() {
| }
|
| @Column(name="USR_ID")
| @Id
| @NotNull
| @Length(min=2, max=10)
| public String getID() {
| return m_ID;
| }
|
| //Here follow all the needed getters and setters
| }
The LoginAction:
package myprog.sessions;
|
| import java.util.List;
|
| import javax.ejb.Interceptor;
| import javax.ejb.Stateful;
| import javax.ejb.Stateless;
| import javax.faces.application.FacesMessage;
| import javax.faces.context.FacesContext;
| import javax.persistence.EntityManager;
| import javax.persistence.PersistenceContext;
|
| import org.jboss.seam.annotations.In;
| import org.jboss.seam.annotations.Name;
| import org.jboss.seam.annotations.Out;
| import org.jboss.seam.contexts.Context;
| import org.jboss.seam.ejb.SeamInterceptor;
|
| import myprog.entities.User;
|
| @Stateless
| @Name("login")
| @Interceptor(SeamInterceptor.class)
| public class LoginAction implements ILogin {
| @In @Out
| private User user;
|
| @PersistenceContext(unitName="myProgDatabase")
| private EntityManager em;
|
| @In
| private Context sessionContext;
|
| @In
| private FacesContext facesContext;
|
| public String login() {
| List<User> results = em.createQuery(
| "from User where ID=:username")
| .setParameter("username",
user.getID()).getResultList();
|
| if (results.size() == 0) {
| facesContext.addMessage(null, new FacesMessage("Invalid
login"));
| return "login";
| } else {
| user = results.get(0);
| sessionContext.set("loggedIn", true);
| return "main";
| }
|
| }
| }
Here is the component with the called method:
package myprog.sessions;
|
| import java.util.List;
|
| import javax.ejb.Interceptor;
| import javax.ejb.Stateful;
| import javax.ejb.Stateless;
| import javax.persistence.EntityManager;
| import javax.persistence.PersistenceContext;
|
| import org.hibernate.validator.Valid;
| import org.jboss.seam.ScopeType;
| import org.jboss.seam.annotations.In;
| import org.jboss.seam.annotations.Name;
| import org.jboss.seam.annotations.Out;
| import org.jboss.seam.annotations.Scope;
| import org.jboss.seam.contexts.Context;
| import org.jboss.seam.ejb.SeamInterceptor;
|
| import myprog.entities.Testaction;
| import myprog.entities.User;
|
| @Stateless
| @LoggedIn
| @Name("showListForDevelopers")
| @Interceptor(SeamInterceptor.class)
| public class ShowListForDevelopers implements IShowListForDevelopers {
| @PersistenceContext(unitName = "myProgDatabase")
| private EntityManager em;
|
| @In @Valid
| private User user;
|
| public Testaction[] getTestactions() {
| List<Testaction> result = em.createQuery(
| "from Testaction where DevUsrID=:dev order by
ID asc"
| ).setParameter("dev",
user.getID()).getResultList();
| return result.toArray(new Testaction[result.size()]);
| }
| }
As I said, in getTestactions() the user isn't injected. Has anybody any idea?
Might be it's important to know, that the method is called from a
panelNavigation2 item. But I think, this shouldn't make any difference.
Thank you
Newlukai
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