private String[] updateUserRoles(Role role, List<String> selectedUsers, Realm realm)
throws Exception {
UserDatabase userDatabase = UserDatabaseManager.getInstance().getUserDatabase(realm);
User[] usersInRole = userDatabase.getUsersInRole(role);
Collection<String> usersNotRemoved = new TreeSet<String>();
for (User user : usersInRole) {
String principalName = user.getPrincipalName();
if (selectedUsers.contains(principalName)) {
// role is already assigned so make sure this don't happen again
selectedUsers.remove(principalName);
} else {
Role[] updatedRoles = removeRole(role, user.getRoles());
try {
userDatabase.updateAccount(user, user.getEmail(), user.getFullname(), updatedRoles);
} catch (GroupsRequiredForUserException e) {
usersNotRemoved.add(principalName);
}
}
}
for (String principalName : selectedUsers) {
User user = userDatabase.getAccount(principalName);
Role[] updatedRoles = addRole(role, user.getRoles());
userDatabase.updateAccount(user, user.getEmail(), user.getFullname(), updatedRoles);
}
return usersNotRemoved.toArray(new String[usersNotRemoved.size()]);
}
