public void addManagers(int resourceId, List<String> managers) {
   Connection con = initCon();
   try {
     ResourcesManagerDAO.removeAllManagers(con, resourceId);
     Iterator<String> it = managers.iterator();
     while (it.hasNext()) {
       String manager = it.next();
       String managerId = manager.split("/")[0];
       addManager(resourceId, Integer.parseInt(managerId));
     }
   } catch (SQLException e) {
     throw new ResourcesManagerRuntimeException(
         "ResourcesManagerBmEJB.addManagers()",
         SilverpeasRuntimeException.ERROR,
         "resourcesManager.EX_ADD_MANAGER",
         e);
   } finally {
     fermerCon(con);
   }
 }