public static void invalidateObjects(EOEditingContext ec, NSArray list) {
   NSMutableArray listGIDs = new NSMutableArray();
   for (int i = 0; i < list.count(); i++) {
     listGIDs.addObject(ec.globalIDForObject((EOEnterpriseObject) list.objectAtIndex(i)));
   }
   ec.invalidateObjectsWithGlobalIDs(listGIDs);
 }
 /** invalide l'object record passe en parametre */
 public static void invalidateObject(EOEditingContext ec, EOGenericRecord record) {
   NSArray listGIDs = new NSArray(new Object[] {ec.globalIDForObject(record)});
   ec.invalidateObjectsWithGlobalIDs(listGIDs);
 }