METHODS AND APPARATUS TO MAINTAIN VALIDITY OF SHARED INFORMATION

• US 20110088091A1
• Filed: 06/17/2010
• Published: 04/14/2011
• Est. Priority Date: 06/19/2009
• Status: Abandoned Application

• Current Assignee: Blackberry Limited
• Original Assignee: Blackberry Limited
• Inventors: Bibr, Viera, Fritsch, Laura Brindusa, Petronijevic, Dejan, Shirzadi, Farhoud, Shenfield, Michael, Bells, Matthew, Godfrey, James
• Application Number:
  US12/817,954
• Publication Number:
  US 20110088091A1
• Time in Patent Office: Days
• US Class Current: 726/21
• CPC Class Codes: G06F 21/6209 to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself
• CPC Class Codes: G06F 21/6227 where protection concerns the structure of data, e.g. records, types, queries
• CPC Class Codes: G06F 2221/2141 Access rights, e.g. capability lists, access control lists, access tables, access matrices

Abstract

Example methods and apparatus to maintain validity of shared information are disclosed. A disclosed example method involves receiving a communication requesting an extensible markup language (XML) document from an XML document management client associated with a principal. In addition, the example method involves generating a subset of the XML document for the principal such that validity of the subset is ensured by including all document parts required according to an XML schema despite the principal having access rights to only certain parts of the XML document but not other parts. The other parts are included in the subset without values.

Claims

1. A method performed by an extensible markup language (XML) document management server, the method comprising:

receiving a communication requesting an XML document from an XML document management client associated with a principal; and

generating a subset of the XML document for the principal such that validity of the subset is ensured by including all document parts required according to an XML schema despite the principal having access rights to only certain parts of the XML document but not other parts,

wherein the other parts are included in the subset without values.

2. The method of claim 1, wherein generating comprises:

supplying placeholders in the subset of the XML document, the placeholders representing the other parts for which the principal has no access rights.

3. The method of claim 2, wherein the placeholder is a blank.

4. The method of claim 2, wherein the placeholder is a value indicating a restriction or restricted access.

5. The method of claim 1, wherein the communication requesting the XML document is an XML configuration access protocol (XCAP) request.

6. The method of claim 1, wherein the XML document management server is an XML document management (XDM) server (XDMS) that is compliant with the Open Mobile Alliance (OMA) XDM Enabler specification.

7. A tangible computer readable medium storing instructions which cause a processor of a network apparatus to execute a server that performs the method of claim 1.

8. A network apparatus comprising:

a processor executing a server configured to;

receive, from an extensible markup language (XML) document management client associated with a principal, a communication requesting an XML document; and

generate a subset of the XML document for the principal such that validity of the subset is ensured by including all document parts required according to an XML schema despite the principal having access rights to only certain parts of the XML document but not other parts, wherein the other parts are included in the subset without values.

9. The apparatus of claim 8, wherein the operation to generate a subset of the XML document comprises:

supplying placeholders in the subset of the XML document, the placeholders representing the other parts for which the principal has no access rights.

10. The apparatus of claim 9, wherein the placeholder is a blank.

11. The apparatus of claim 9, wherein the placeholder is a value indicating a restriction or restricted access.

12. The apparatus of claim 8, wherein the communication requesting the XML document is an XML configuration access protocol (XCAP) request.

13. The apparatus of claim 8, wherein the XML document management server is an XML document management (XDM) server (XDMS) that is compliant with the Open Mobile Alliance (OMA) XDM Enabler specification.

14. A method performed by an extensible markup language (XML) document management client, the method comprising:

sending, to an XML document management server, a communication requesting an XML document,

wherein the communication causes the XML document management server to generate a subset of the XML document for the principal such that validity of the subset is ensured by including all document parts required according to an XML schema despite the principal having access rights to only certain parts of the XML document but not other parts, and

wherein the other parts are included in the subset without values.

15. The method of claim 14, wherein validity of the subset is ensured by supplying placeholders in the subset of the XML document, the placeholders representing the other parts for which the principal has no access rights.

16. The method of claim 15, wherein the placeholder is a blank.

17. The method of claim 15, wherein the placeholder is a value indicating a restriction or restricted access.

18. The method of claim 14, wherein the communication requesting the XML document is an XML configuration access protocol (XCAP) request.

19. The method of claim 14, wherein the XML document management client is an XML document management (XDM) client (XDMC) that is compliant with the Open Mobile Alliance (OMA) XDM Enabler specification.

20. A tangible computer readable medium storing instructions which cause a processor of a mobile communication device to execute a client that performs the method of claim 14.

21. A mobile communication device comprising:

a processor executing an XML document management client configured to send, to an XML document management server, a communication requesting an XML document,

wherein the communication causes the XML document management server to generate a subset of the XML document for the principal such that validity of the subset is ensured by including all document parts required according to an XML schema despite the principal having access rights to only certain parts of the XML document but not other parts, and

wherein the other parts are included in the subset without values.

22. The device of claim 21, wherein validity of the subset is ensured by supplying placeholders in the subset of the XML document, the placeholders representing the other parts for which the principal has no access rights.

23. The device of claim 22, wherein the placeholder is a blank.

24. The device of claim 22, wherein the placeholder is a value indicating a restriction or restricted access.

25. The device of claim 21, wherein the communication requesting the XML document is an XML configuration access protocol (XCAP) request.

26. The device of claim 21, wherein the XML document management client is an XML document management (XDM) client (XDMC) that is compliant with the Open Mobile Alliance (OMA) XDM Enabler specification.