private List<GrantedAuthority> populateGrantedAuthorities() {
final List<GrantedAuthority> grantedAuthorities = new ArrayList<GrantedAuthority>();
for (final Role role : this.roles) {
final Collection<Permission> permissions = role.getPermissions();
for (final Permission permission : permissions) {
grantedAuthorities.add(new SimpleGrantedAuthority(permission.getCode()));
}
}
return grantedAuthorities;
}
