selectManyMenu validation error
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}"/>
...
