gistfile1.js

var DavFolder = new Resource('davFolder', {
  "@save": function() {
    throw "what happens if I throw during a save?";
  }
});

DavFolder.root = function() {
  davFolders = DavFolder.search({ parentId: null, name: "/" });
  switch (davFolders.length) {
    case 0:
      var davFolder = new DavFolder();
      davFolder.parentId = null;
      davFolder.name = "/";
      davFolder.save();
      return davFolder;
      break;
    case 1:
      return davFolders[0];
      break;
    default:
      return "barf";
      //throw "Got an unexpected number of root folders.";
  }
};