Question

I’m trying to work at a Roles script in JSF. For my set-up I have the following JPA tags in the class UserType:

@ManyToMany
@JoinTable(name = "Usertype_Permissions",
joinColumns = {
    @JoinColumn(name = "USERTYPE_ID", referencedColumnName = "id")},
inverseJoinColumns = {
    @JoinColumn(name = "PERMISSION_ID", referencedColumnName = "id")})
public List<Permission> permissionList;

This creates an extra table in my database with the values.

Now, my question is, what is the best way to link this to a JSF page with checkboxes? I was thinking that only if a checkbox is ticked it is stored in the joined table “Usertype_Permissions” and if it is not ticked it isn’t saved at all.

However, upon going to the page where I can setup the permissions I want to see the granted permissions (ticked and saved in “UserType_Permissions”) and the ones that aren’t granted (thus not saved).

Any hints/ideas how to accomplish this?

Answer 1

Best way was to put all the database login into my EJB and pass Lists of the Object through 🙂