try {
IFolderManagement folders = MapperRegistry.getInstance().
getFolderManagement();
AuthUser aUser = ServiceProvider.getAuthenticationService().authenticateHash(user.getLoginName(),
user.getPassword());
List <ExplorerTreeNode> nodes = folders.reallyGetFolders(aUser);
for (ExplorerTreeNode nd: nodes) {
folders.delete(nd);
}
} catch (SQLException e) {
e.printStackTrace();