Please comment on how to inject entityManager into Seam component action. And explain the way to call em.createQuery to check the db.
thank in advance.
package com.nov.session;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Logger;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;
import org.jboss.seam.log.Log;
import org.jboss.seam.security.Identity;
import org.jboss.seam.faces.FacesMessages;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.NoResultException;
import java.util.List;
import javax.ejb.Stateless;
import static org.jboss.seam.ScopeType.EVENT;
import com.nov.entity.Customers;
@Name("authenticator")
public class Authenticator {
@Logger
Log log;
@In FacesMessages facesMessages;
@In
Identity identity;
public boolean authenticate() {
return true;
}
/*
@PersistenceContext
private EntityManager em;
public boolean authenticate() {
log.info("authenticating #0...^^^^^^^^username........................", identity.getUsername());
log.info("authenticating #0...^^^^^^^^^password........................", identity.getPassword());
try {
Customers customers = (Customers)em.createQuery("select u from Customers u where customers_email_address=:email_address and customers_password=:password")
.setParameter("email_address", identity.getUsername())
.setParameter("password", identity.getPassword())
.getSingleResult();
if (customers == null) {
return false;
}
identity.addRole("customers");
return true;
} catch (NoResultException ex){
log.info("authenticating #0...^^^^^^^^NORESULTEXCEPTION........................", ex.toString());
facesMessages.add("Invaild username and password. Username is your registered email address"); return false;
}
}
*/
}
