/**
* Hilfsmethode zur Ermittlung der aktuellen User Id
*
* @return long id
* @throws NullPointerException
*/
private long getCurrentUserId() throws NullPointerException {
FacesContext fc = FacesContext.getCurrentInstance();
ExternalContext externalContext = fc.getExternalContext();
long id = Long.parseLong(externalContext.getUserPrincipal().getName());
return id;
}
