public function reload($projets, $project_id, $project_ref, Doctrine_Connection $conn = null, $openNodes)
 {
     if ($conn == null) {
         $conn = Doctrine_Manager::connection();
     }
     $items = $projets->getElementsByTagName("ei_trees");
     if ($items->length > 0) {
         //ya t-il des éléments à traiter?
         $ei_trees = $items->item(0)->getElementsByTagName("ei_tree");
         $collection = new Doctrine_Collection("EiTree");
         if ($ei_trees != null) {
             foreach ($ei_trees as $ei_tree) {
                 $id = $ei_tree->getAttribute("id");
                 //recherche du profil en base
                 if ($id != null) {
                     $q = Doctrine_Core::getTable('EiTree')->findOneById($id);
                 }
                 if ($q && $q != null) {
                     //si l'element existe , on fait une mise à jour
                     $q->name = $ei_tree->getElementsByTagName("name")->item(0)->nodeValue;
                     $q->type = $ei_tree->getElementsByTagName("type")->item(0)->nodeValue;
                     $q->obj_id = $ei_tree->getElementsByTagName("obj_id")->item(0)->nodeValue;
                     $q->ref_obj = $ei_tree->getElementsByTagName("ref_obj")->item(0)->nodeValue;
                     $q->is_root = $ei_tree->getElementsByTagName("is_root")->item(0)->nodeValue;
                     if ($ei_tree->getElementsByTagName("path")->length > 0) {
                         $q->path = $ei_tree->getElementsByTagName("path")->item(0)->nodeValue;
                     }
                     $q->project_id = $project_id;
                     $q->project_ref = $project_ref;
                     $q->position = $ei_tree->getElementsByTagName("position")->item(0)->nodeValue;
                     $q->root_id = $ei_tree->getElementsByTagName("root_id")->item(0)->nodeValue;
                     $q->save($conn);
                 } else {
                     //l'élément n'existe pas encore, et dans ce cas on le crée
                     $new_ei_tree = new EiTree();
                     $new_ei_tree->setId($id);
                     $new_ei_tree->name = $ei_tree->getElementsByTagName("name")->item(0)->nodeValue;
                     $new_ei_tree->type = $ei_tree->getElementsByTagName("type")->item(0)->nodeValue;
                     $new_ei_tree->obj_id = $ei_tree->getElementsByTagName("obj_id")->item(0)->nodeValue;
                     $new_ei_tree->ref_obj = $ei_tree->getElementsByTagName("ref_obj")->item(0)->nodeValue;
                     $new_ei_tree->is_root = $ei_tree->getElementsByTagName("is_root")->item(0)->nodeValue;
                     if ($ei_tree->getElementsByTagName("path")->length > 0) {
                         $new_ei_tree->path = $ei_tree->getElementsByTagName("path")->item(0)->nodeValue;
                     }
                     $new_ei_tree->project_id = $project_id;
                     $new_ei_tree->project_ref = $project_ref;
                     $new_ei_tree->position = $ei_tree->getElementsByTagName("position")->item(0)->nodeValue;
                     $new_ei_tree->root_id = $ei_tree->getElementsByTagName("root_id")->item(0)->nodeValue;
                     $new_ei_tree->save($conn);
                     if (isset($openNodes) && array_key_exists($new_ei_tree->getId(), $openNodes)) {
                         foreach ($openNodes[$new_ei_tree->getId()] as $i => $opened) {
                             $copy = new EiTreeOpenedBy();
                             $copy->setEiTreeId($id);
                             $copy->setUserId($opened->getUserId());
                             $copy->setRefId($opened->getRefId());
                             $copy->save($conn);
                         }
                     }
                 }
             }
             return 1;
         }
         return null;
     }
 }