DYNAMIC SCHEMA ASSEMBLY TO ACCOMMODATE APPLICATION-SPECIFIC METADATA

• US 20080065678A1
• Filed: 09/12/2006
• Published: 03/13/2008
• Est. Priority Date: 09/12/2006
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Petri, John E.
• Granted Patent: US 8,244,694 B2
• Time in Patent Office: Days
• US Class Current: 707/102
• CPC Class Codes: G06F 16/83 Querying

Abstract

Embodiments of the invention provide a method, system, and article of manufacture for the dynamic schema assembly for documents managed by a content management system (CMS). In one embodiment, a transient, application specific markup schema is dynamically generated when a user accesses a data object managed by the CMS. For example, users may perform operations such as checking out a document from the CMS, viewing a document in the CMS or exporting a document from the CMS. The transient schema is configured to accommodate application-specific metadata, without directly changing or interfering with a base schema associated with the data object.

Claims

1. A method for providing dynamic schema assembly to accommodate application specific metadata in data objects managed by a content management system (CMS), comprising:

receiving a request to access a document from the CMS, wherein the document is associated with a base schema;

generating a modified document by embedding the application specific metadata in the document;

generating a transient schema by rewriting an instance of the base schema associated with the document, wherein the modified document may be validated against the transient schema; and

providing the modified document and transient schema to a requesting application in response to the request.

2. The method of claim 1, wherein the CMS stores the document as one or more individual document fragments, and wherein generating the modified document further comprises assembling the one or more document fragments, and wherein the application specific metadata specifies boundaries between the one or more fragments.

3. The method of claim 1, wherein the application specific metadata specifies read/write rules for portions of the document enforced by the client application.

4. The method of claim 1, wherein rewriting the base schema comprises adding elements to the schema describing the application specific metadata.

5. The method of claim 1, wherein the document is an XML document, and wherein the base schema is an XML schema.

6. The method of claim 1, further comprising,

receiving the modified document from the requesting application;

stripping the application specific metadata from the modified document, wherein the modified, stripped document may be validated against the base schema; and

storing the modified, stripped document in the CMS.

7. The method of claim 6, wherein storing the modified, stripped document in the CMS comprises bursting the modified, stripped document into one or more document fragments and storing each fragment in the CMS.

22. A method for deploying computing infrastructure, comprising integrating computer readable code into a computing system, wherein the code in combination with the computing system is adapted to perform the method of claim 1.

8. A computer-readable storage medium containing a program which, when executed, performs an operation for providing dynamic schema assembly to accommodate application specific metadata in data objects managed by a content management system (CMS), the operation comprising:

receiving a request to access a document from the CMS, wherein the document is associated with a base schema;

generating a modified document by embedding the application specific metadata in the document;

generating a transient schema by rewriting an instance of the base schema associated with the document, wherein the modified document may be validated against the transient schema; and

providing the modified document and transient schema to a requesting application in response to the request.

9. The computer-readable storage medium of claim 8, wherein the CMS stores the document as one or more individual document fragments, and wherein generating the modified document further comprises assembling the one or more document fragments, and wherein the application specific metadata specifies boundaries between the one or more fragments.

10. The computer-readable storage medium of claim 8, wherein the application specific metadata specifies read/write rules for portions of the document enforced by the client application.

11. The computer-readable storage medium of claim 8, wherein rewriting the base schema comprises adding elements to the schema describing the application specific metadata.

12. The computer-readable storage medium of claim 8, wherein the document is an XML document, and wherein the base schema is an XML schema.

13. The computer-readable storage medium of claim 8, wherein the operation further comprises:

receiving the modified document from the requesting application;

stripping the application specific metadata from the modified document, wherein the modified, stripped document may be validated against the base schema; and

storing the modified, stripped document in the CMS.

14. The computer-readable storage medium of claim 13, wherein storing the modified, stripped document in the CMS comprises bursting the modified, stripped document into one or more document fragments and storing each fragment in the CMS.

15. A system, comprising:

a processor; and

a memory containing a content management system (CMS) configured to perform a method for providing dynamic schema assembly to accommodate application specific metadata in data objects managed by a content management system (CMS), comprising;

receiving a request to access a document from the CMS, wherein the document is associated with a base schema;

generating a modified document by embedding the application specific metadata in the document;

generating a transient schema by rewriting an instance of the base schema associated with the document, wherein the modified document may be validated against the transient schema; and

providing the modified document and transient schema to a requesting application in response to the request.

16. The system of claim 15, wherein the CMS stores the document as one or more individual document fragments, and wherein generating the modified document further comprises assembling the one or more document fragments, and wherein the application specific metadata specifies boundaries between the one or more fragments.

17. The system of claim 15, wherein the application specific metadata specifies read/write rules for portions of the document enforced by the client application.

18. The system of claim 15, wherein rewriting the base schema comprises adding elements to the schema describing the application specific metadata.

19. The system of claim 15, wherein the document is an XML document, and wherein the base schema is an schema.

20. The system of claim 15, wherein performing the method for providing dynamic schema assembly to accommodate application specific metadata further comprises:

receiving the modified document from the requesting application;

stripping the application specific metadata from the modified document, wherein the modified, stripped document may be validated against the base schema; and

storing the modified, stripped document in the CMS.

21. The system of claim 20, wherein storing the modified, stripped document in the CMS comprises bursting the modified, stripped document into one or more document fragments and storing each fragment in the CMS.