[jboss-user] [JBoss Seam] - selectManyMenu validation error

[jonathan.shin]

I created EJB3 ManyToMany entities.  User has a many to many relationship with Role.  A user can have zero or more roles, and a role can have zero or more users.  But, I?m getting validation error (?roles: Value is not a valid option?) when I clicked the ?Save? button.

User Entity:

  | @Entity
  | @Table(name = "User")
  | public class User implements java.io.Serializable {
  | ...
  | @ManyToMany
  | @JoinTable(name="User_Role",
  | 		joinColumns=@JoinColumn(name="user_id", referencedColumnName="user_id"),
  | 	  inverseJoinColumns=@JoinColumn(name="role_id", referencedColumnName="role_id")
  | 	  )
  | public List<Role> getRoles() {
  | 	return this.roles;
  | }
  | 
  | public void setRoles(List<Role> roles) {
  | 	this.roles = roles;
  | }
  | }
  | 
  | 

UserHome Object:

  | @Name("userHome")
  | public class UserHome extends EntityHome<User> {
  | 
  | 	public void setUserUserId(Integer id) {
  | 		setId(id);
  | 	}
  | 
  | 	public Integer getUserUserId() {
  | 		return (Integer) getId();
  | 	}
  | 
  | 	@Override
  | 	protected User createInstance() {
  | 		User user = new User();
  | 		return user;
  | 	}
  | ...
  | 	public List<Role> getRoles() {
  | 		return getInstance() == null ? null : new ArrayList<Role>(
  | 				getInstance().getRoles());
  | 	}
  | 
  | }
  | 

Role Entity:

  | @Entity
  | @Name("role")
  | @Scope(SESSION)
  | @Table(name = "Role")
  | public class Role implements java.io.Serializable
  | {
  | 
  | 	private int roleId;
  | 
  | 	private String name;
  | 
  | 	private List<User> users;
  | 
  | 	public Role()
  | 	{
  | 		System.out.println("Default Constructor");
  | 	}
  | ...
  | 	@Column(name = "NAME", length = 50)
  | 	@Length(max = 50)
  | 	@NotNull
  | 	public String getName()
  | 	{
  | 		return this.name;
  | 	}
  | 
  | 	public void setName(String name)
  | 	{
  | 		this.name = name;
  | 	}
  | 
  | 	@ManyToMany(mappedBy = "roles")
  | 	public List<User> getUsers()
  | 	{
  | 		return this.users;
  | 	}
  | 
  | 	public void setUsers(List<User> users)
  | 	{
  | 		this.users = users;
  | 	}
  | }
  | 

Converter:

  | @Name("converters")
  | public class Converters
  | {
  | 
  |    @Transactional
  |    public Converter getRoleConverter() {
  |       return new Converter() {
  | 
  |          @Transactional
  |          public Object getAsObject(FacesContext arg0, UIComponent arg1, String arg2) throws ConverterException
  |          {
  |             if (arg2 == null) {
  |                return null;
  |             }
  |             try {
  |                return  ((EntityManager) Component.getInstance("entityManager")).find(Role.class, Integer.valueOf(arg2));
  |             } catch (NumberFormatException e) {
  |               throw new ConverterException("Cannot find selected Role", e);
  |             }
  |          }
  | 
  |          @Transactional
  |          public String getAsString(FacesContext arg0, UIComponent arg1, Object arg2) throws ConverterException
  |          {
  |            if (arg2 instanceof Role)
  |             {
  |         	   Role role = (Role) arg2;
  |                Integer tempId =  (Integer) role.getRoleId();
  |                return tempId.toString();
  |             }
  |            else
  |            {
  |               return null;
  |            }
  |          }
  |          
  |       };
  |    }
  | }
  | 

UserEdit.xhtml view:

  | ...
  | 			<h:outputLabel for="role">
  |                         Roles
  |                   </h:outputLabel>
  |                   <s:decorate id="roleDecoration">
  | 			<h:selectManyMenu id="roles" value="#{userHome.instance.roles}" size="5"  converter="#{converters.roleConverter}">
  | 			<s:selectItems value="#{roleList.resultList}" var="role" label="#{role.name}" noSelectionLabel="Please Select..." hideNoSelectionLabel="true"/>
  | 			</h:selectManyMenu>
  |                   </s:decorate>
  | ...
  |             <h:commandButton id="save" 
  |                           value="Save" 
  |                          action="#{userHome.persist}"
  |                        disabled="#{!userHome.wired}"
  |                        rendered="#{!userHome.managed}"/>  
  | ...
  | 


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