Comments on: JBoss Seam: Coming to an App Server Near You http://www.michaelyuan.com/blog/2006/12/13/jboss-seam-coming-to-an-app-server-near-you/ "Science is a wonderful thing if one does not have to earn one's living at it" -- Albert Einstein Wed, 07 Jan 2009 04:44:46 +0000 http://wordpress.org/?v=2.6 By: Nadenka Lara http://www.michaelyuan.com/blog/2006/12/13/jboss-seam-coming-to-an-app-server-near-you/#comment-64415 Nadenka Lara Tue, 20 May 2008 13:57:57 +0000 http://www.michaelyuan.com/blog/2006/12/13/jboss-seam-coming-to-an-app-server-near-you/#comment-64415 Hello Michael, first of all... i love seam! i have a problem, sadly, i got some troubles. i have created a project (ear) with the seam eclipse plugin. I got 4 projects test, ejb, war and the aer containing references to the ejb and war modules. everything ok... after that i created an ejb project where i want to hoard the model/entities, added a reference to this project in the ear application.xml and referenced this project from the ejb project. The problem is, that seam does not recognize the managed entity beans so i must use things like that: <code> @Name("authenticator") public @Stateless class AuthenticatorBean implements Authenticator { @Logger Log log; @In Identity identity; @EJB UserFacade userFacade; public boolean authenticate() { log.info("authenticating #0", identity.getUsername()); //write your authentication logic here, //return true if the authentication was //successful, false otherwise //TODO: Login Module entwickeln (Factory-Pattern) damit man unterschiedliche Login Arten unterstützen kann User user = userFacade.findUserByCredentials(identity.getUsername(), identity.getPassword()); if(user == null) { return false; } // (needed but don't want to use this) //Contexts.getSessionContext().set("user", user); for(Membership m: user.getMemberships()) { identity.addRole(m.getRole().getRolename()); } return true; } } </code> The Entity: <code> @Entity @Table(name="USER") @Name("user") public class User extends AbstractOrganizationUnit { /** * */ private static final long serialVersionUID = 1L; @NotNull @Column(name="USR_NAME") @Min(8) private String username; @NotNull @Column(name="USR_PWD") @Min(8) private String password; @CollectionOfElements @JoinTable(name="USER_MEMBERSHIP", joinColumns=@JoinColumn(name="USR_ID") ) private Set memberships; /** * */ public User() {} public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public Set getMemberships() { return memberships; } public void setMemberships(Set memberships) { this.memberships = memberships; } /** * @param membership * @return */ public boolean addMembership(Membership membership) { return this.getMemberships().add(membership); } /** * @param membership * @return */ public boolean removeMembership(Membership membership) { return this.getMemberships().remove(membership); } } </code> The Facede/Action Bean: <code> @Name("userFacade") public @Stateless class UserFacadeBean implements UserFacade { @PersistenceContext private EntityManager em; @Logger private Log log; public User findUserByCredentials(String username, String password) { log.debug("findUserByCredentials() called!"); try { return (User)em.createQuery("from User where username=:username and password=:password") .setParameter("username", username) .setParameter("password", password) .getSingleResult(); } catch (RuntimeException e) { log.error("#0 ocurred.", e.getClass().getSimpleName()); return null; } } } </code> The other beans in the projects created by the plugin are recognized and also showed in the "Seam Components View". Could you help me? Thanx in advance, nadenka Hello Michael,

first of all… i love seam! i have a problem, sadly, i got some troubles.

i have created a project (ear) with the seam eclipse plugin. I got 4 projects test, ejb, war and the aer containing references to the ejb and war modules. everything ok… after that i created an ejb project where i want to hoard the model/entities, added a reference to this project in the ear application.xml and referenced this project from the ejb project.
The problem is, that seam does not recognize the managed entity beans so i must use things like that:

@Name("authenticator")
public @Stateless class AuthenticatorBean implements Authenticator {
@Logger Log log;

@In Identity identity;

@EJB UserFacade userFacade;

public boolean authenticate() {
log.info("authenticating #0", identity.getUsername());
//write your authentication logic here,
//return true if the authentication was
//successful, false otherwise
//TODO: Login Module entwickeln (Factory-Pattern) damit man unterschiedliche Login Arten unterstützen kann
User user = userFacade.findUserByCredentials(identity.getUsername(), identity.getPassword());

if(user == null) {
return false;
}

// (needed but don't want to use this) //Contexts.getSessionContext().set("user", user);

for(Membership m: user.getMemberships()) {
identity.addRole(m.getRole().getRolename());
}
return true;
}
}

The Entity:

@Entity
@Table(name="USER")
@Name("user")
public class User extends AbstractOrganizationUnit {
/**
*
*/
private static final long serialVersionUID = 1L;
@NotNull
@Column(name="USR_NAME")
@Min(8)
private String username;
@NotNull
@Column(name="USR_PWD")
@Min(8)
private String password;
@CollectionOfElements
@JoinTable(name="USER_MEMBERSHIP",
joinColumns=@JoinColumn(name="USR_ID")
)
private Set memberships;

/**
*
*/
public User() {}

public String getUsername() {
return username;
}

public void setUsername(String username) {
this.username = username;
}

public String getPassword() {
return password;
}

public void setPassword(String password) {
this.password = password;
}

public Set getMemberships() {
return memberships;
}

public void setMemberships(Set memberships) {
this.memberships = memberships;
}

/**
* @param membership
* @return
*/
public boolean addMembership(Membership membership) {
return this.getMemberships().add(membership);
}

/**
* @param membership
* @return
*/
public boolean removeMembership(Membership membership) {
return this.getMemberships().remove(membership);
}

}

The Facede/Action Bean:

@Name("userFacade")
public @Stateless class UserFacadeBean implements UserFacade {

@PersistenceContext
private EntityManager em;

@Logger
private Log log;

public User findUserByCredentials(String username, String password) {
log.debug("findUserByCredentials() called!");
try {
return (User)em.createQuery("from User where username=:username and password=:password")
.setParameter("username", username)
.setParameter("password", password)
.getSingleResult();
} catch (RuntimeException e) {
log.error("#0 ocurred.", e.getClass().getSimpleName());
return null;
}
}
}

The other beans in the projects created by the plugin are recognized and also showed in the “Seam Components View”.

Could you help me?

Thanx in advance,

nadenka

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