Network file system
Generally described, the present invention is directed to a network operating system that provides more effective ways of leveraging the connectivity of computer networks. In one embodiment, an XML virtual machine is implemented that accepts high-level application code written in an XML programming language as input. Functionality is provided to interpret or translate the application code written in an XML programming language into code that is suitable for execution across computer platforms. Moreover, the XML virtual machine supports the Model View Controller (MVC) design paradigm that facilitates true data abstraction from applications to a common data model. Multi-instance applications, with each instance potentially supporting multiple views, may be created and executed.
1. A method implemented in computer-executable instructions that, when executed by a computer processor, produces a document for transmission to a client computing device that describes a folder tree, the method comprising:
in response to receiving a request from the client computing device to access a root folder, querying a folder database for information associated with the root folder describing a user's access rights with regard to the root folder;
authenticating that the user has rights to access the root folder and creating the document that describes the folder tree;
adding metadata associated with the root folder to the document that describes the folder tree;
for each subfolder within the hierarchy of the root folder that has the same permissions with respect to the user as the root folder:
obtaining metadata of the subfolder from the folder database;
adding metadata associated with the subfolder to the document that describes the folder tree; and
for at least one subfolder within the hierarchy of the root folder that has different permissions with respect to the user as the root folder, inserting an XLink corresponding to the subfolder into the document, the XLink allowing the user to access the subfolder once the user's right to access the subfolder is authenticated.
2. The method as recited in claim 1 , further comprising:
querying an index server for information describing each file in the root folder;
adding metadata associated with each file in the root folder to the document that describes the folder tree; and
wherein at least one file in the root folder is of a file type that initiates execution of an application upon the root folder being mounted as a virtual drive on the client computing device.
3. The method as recited in claim 1 , further comprising:
accepting a request from a client computing device to perform a search for a file associated with specified content; and
identifying one or more files from an index having content that matches data provided in the request.
4. The method as recited in claim 1 , wherein adding metadata associated with the root folder to the document that describes the folder tree, includes:
obtaining an identifier of the root folder in the request from the client computing device to access the root folder; and
querying an index server to retrieve a list of files associated with the root folder.
5. The method as recited in claim 4 , further comprising:
searching the list of files for one or more restricted files, each restricted file having associated data that indicates that the user does not have access rights to the file;
removing the one or more restricted files from the list;
returning the list from the index server in the format of an atom feed; and
adding the list to the document that describes the folder tree.