Shared closure persistence of session state information

• US 20060248199A1
• Filed: 04/29/2005
• Published: 11/02/2006
• Est. Priority Date: 04/29/2005
• Status: Abandoned Application

• Current Assignee: SAP AG (SAP SE)
• Original Assignee: SAP AG (SAP SE)
• Inventors: Stanev, Georgi
• Application Number:
  US11/118,020
• Publication Number:
  US 20060248199A1
• Time in Patent Office: Days
• US Class Current: 709/227
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 67/142 Managing session states for stateless protocols; Signalling session states; State transitions; Keeping-state mechanisms
• CPC Class Codes: H04L 67/145 avoiding end of session, e.g. keep-alive, heartbeats, resumption message or wake-up for inactive or interrupted session

Abstract

A method is described in which, as a consequence of receiving a deployment descriptor that specifies a persistence scope that does not extend beyond a computing system, over the course of a session, persisting session state information for the session in a shared memory of the computing system that is accessible to multiple virtual machines of the computing system. The session state information comprises a plurality of attributes. The persisting of the session state information comprises storing an object for one of the attributes to the shared memory. The object does not contain a reference to another object and another object does not contain a reference to the object.

Claims

1. A method, comprising:

a) receiving a deployment descriptor that specifies a persistence scope that does not extend beyond a computing system; and

,

b) as a consequence of said receiving, over the course of a session, persisting session state information for said session in a shared memory of said computing system that is accessible to multiple virtual machines of said computing system, said session state information comprising a plurality of attributes, said persisting of said session state information comprising storing an object for one of said attributes to said shared memory, said object not containing a reference to another object and another object not containing a reference to said object.

2. The method of claim 1 wherein said persistence strategy is specified for an application.

3. The method of claim 2 wherein said method further comprises recognizing a shared session domain in said shared memory in which said session state information and other session state information that is to be treated with the same session management criteria as said session state information is stored.

4. The method of claim 1 wherein said deployment descriptor further specifies a persistence frequency selected from the group consisting of:

on request; and

,

on attribute.

5. The method of claim 4 wherein if said on request persistence frequency is specified said object'"'"'s content is updated because a request has been received for said session.

6. The method of claim 4 wherein if said on attribute persistence frequency is specified said object'"'"'s content is updated because said one of said attributes is changed.

7. The method of claim 1 wherein more than one of said virtual machines run on a single CPU.

8. An article of manufacture including program code which, when executed by a machine, causes the machine to perform a method, the method comprising:

as a consequence of receiving a deployment descriptor that specifies a persistence scope that does not extend beyond a computing system, over the course of a session, persisting session state information for said session in a shared memory of said computing system that is accessible to multiple virtual machines of said computing system, said session state information comprising a plurality of attributes, said persisting of said session state information comprising storing an object for one of said attributes to said shared memory, said object not containing a reference to another object and another object not containing a reference to said object.

9. The article of manufacture of claim 8 wherein said persistence strategy is specified for an application.

10. The article of manufacture of claim 9 wherein said method further comprises recognizing a shared session domain in said shared memory in which said session state information and other session state information that is to be treated with the same session management criteria as said session state information is stored.

11. The article of manufacture of claim 8 wherein said deployment descriptor further specifies a persistence frequency selected from the group consisting of:

on request; and

,

on attribute.

12. The article of manufacture of claim 11 wherein if said on request persistence frequency is specified said object'"'"'s content is updated because a request has been received for said session.

13. The article of manufacture of claim 11 wherein if said on attribute persistence frequency is specified said object'"'"'s content is updated because said one of said attributes is changed.

14. A computing system comprising a machine, said computing system also comprising instructions disposed on a computer readable medium, said instructions capable of being executed by said machine to perform a method, said method comprising:

as a consequence of receiving a deployment descriptor that specifies a persistence scope that does not extend beyond a computing system, over the course of a session, persisting session state information for said session in a shared memory of said computing system that is accessible to multiple virtual machines of said computing system, said session state information comprising a plurality of attributes, said persisting of said session state information comprising storing an object for one of said attributes to said shared memory, said object not containing a reference to another object and another object not containing a reference to said object.

15. The computing system of claim 14 wherein said deployment descriptor further specifies a persistence frequency selected from the group consisting of:

on request; and

,

on attribute.

16. The computing system of claim 15 wherein if said on request persistence frequency is specified said object'"'"'s content is updated because a request has been received for said session.

17. The computing system of claim 15 wherein if said on attribute persistence frequency is specified said object'"'"'s content is updated because said one of said attributes is changed.

18. The computing system of claim 14 wherein more than one of said virtual machines run on a single CPU.