External persistence of session state information

• US 20060248119A1
• Filed: 04/29/2005
• Published: 11/02/2006
• Est. Priority Date: 04/29/2005
• Status: Active Grant

• Current Assignee: SAP SE
• Original Assignee: SAP AG (SAP SE)
• Inventors: Stanev, Georgi, Galchev, Gailin
• Granted Patent: US 7,761,435 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 9/461 Saving or restoring of program or task context

Abstract

A method performed by a computing system is described. The method involves receiving a deployment descriptor that specifies a persistence scope that is external to the computing system. The method also involves, as a consequence of the receiving, instantiating a plug-in for a database that is external to the computing system. The method also involves, over the course of a session, managing the persistence of the session'"'"'s session state information in said database by, with program code provided by the plug-in, translating a first command that is not specific to the database into a second command that is specific to the database. The session state information comprises a plurality of attributes. The first command is to cause a process to be performed. The process is selected from the group consisting of: storing in the database one of the attributes; and, retrieving from the database one of the attributes.

Claims

1. A method performed by a computing system, comprising:

a) receiving a deployment descriptor that specifies a persistence scope that is external to said computing system;

b) as a consequence of said receiving, instantiating a plug-in for a database that is external to said computing system; and

,

c) over the course of a session, managing the persistence of said session'"'"'s session state information in said database by, with program code provided by said plug-in, translating a first command that is not specific to said database into a second command that is specific to said database, said session state information comprising a plurality of attributes, said first command to cause a process to be performed, said process selected from the group consisting of;

storing in said database one of said attributes; and

,

retrieving from said database one of said attributes.

2. The method of claim 1 wherein said managing the persistence of said session'"'"'s session state information with code provided by said plug-in further comprises storing said session information in a row of a table stored within said database, said table containing session state information for other sessions that are managed according to said session'"'"'s session management criteria.

3. The method of claim 2 wherein said managing the persistence of said session'"'"'s session state information with program code provided by said plug-in further comprises translating a third command that is not specific to said database into a fourth command that is specific to said database, said third command to cause a second process to be performed, said second process selected from the group consisting of:

retrieving from said database one of said attributes and a same attribute from the session state information of said other sessions;

retrieving from said database one of said attributes and a same attribute from the session state information of those of said other sessions that are expired, said session also being expired; and

,

retrieving from said database all of said attributes and all attributes from those of said sessions that are expired, said session also being expired.

4. The method of claim 1 wherein said managing the persistence of said session'"'"'s session state information with program code provided by said plug-in further comprises translating a third command that is not specific to said database into a fourth command that is specific to said database, said third command to cause a second process to be performed, said second process selected from the group consisting of:

retrieving from said database all of said attributes; and

deleting from said database all of said attributes.

5. The method of claim 1 wherein:

said one of said attributes is serialized prior to said storing; and

,

said one of said attributes is deserialized after said storing.

6. The method of claim 1 wherein said managing the persistence of said session'"'"'s session state information with program code provided by said plug-in further comprises translating a third command that is not specific to said database into a fourth command that is specific to said database, said third command to cause a second process to be performed, said second process selected from the group consisting of:

retrieving from said database a session identification for said session;

retrieving from said database information used to determine if said session has expired;

updating in said database information used to determine if said session has expired.

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

a) as a consequence of processing a received deployment descriptor that specifies a persistence scope that is external to a computing system that comprises said machine, instantiating a plug-in for a database this is external to said computing system; and

,

b) over the course of a session, managing the persistence of said session'"'"'s session state information in said database by, with program code provided by said plug-in, translating a first command that is not specific to said database into a second command that is specific to said database, said session state information comprising a plurality of attributes, said first command to cause a process to be performed, said process selected from the group consisting of;

storing in said database one of said attributes; and

,

retrieving from said database one of said attributes.

8. The article of manufacture of claim 7 wherein said managing the persistence of said session'"'"'s session state information with code provided by said plug-in further comprises storing said session information in a row of a table stored within said database, said table containing session state information for other sessions that are managed according to said session'"'"'s session management criteria.

9. The article of manufacture of claim 8 wherein said managing the persistence of said session'"'"'s session state information with program code provided by said plug-in further comprises translating a third command that is not specific to said database into a fourth command that is specific to said database, said third command to cause a second process to be performed, said second process selected from the group consisting of:

retrieving from said database one of said attributes and a same attribute from the session state information of said other sessions;

retrieving from said database one of said attributes and a same attribute from the session state information of those of said other sessions that are expired, said session also being expired; and

,

retrieving from said database all of said attributes and all attributes from those of said sessions that are expired, said session also being expired.

10. The article of manufacture of claim 7 wherein said managing the persistence of said session'"'"'s session state information with program code provided by said plug-in further comprises translating a third command that is not specific to said database into a fourth command that is specific to said database, said third command to cause a second process to be performed, said second process selected from the group consisting of:

retrieving from said database all of said attributes; and

deleting from said database all of said attributes.

11. The article of manufacture of claim 7 wherein:

said one of said attributes is serialized prior to said storing; and

,

said one of said attributes is deserialized after said storing.

12. The article of manufacture of claim 7 wherein said managing the persistence of said session'"'"'s session state information with program code provided by said plug-in further comprises translating a third command that is not specific to said database into a fourth command that is specific to said database, said third command to cause a second process to be performed, said second process selected from the group consisting of:

retrieving from said database a session identification for said session;

retrieving from said database information used to determine if said session has expired;

updating in said database information used to determine if said session has expired.

13. 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:

a) as a consequence of processing a received deployment descriptor that specifies a persistence scope that is external to a computing system that comprises said machine, instantiating a plug-in for a database this is external to said computing system; and

,

b) over the course of a session, managing the persistence of said session'"'"'s session state information in said database system by, with program code provided by said plug-in, translating a first command that is not specific to said database into a second command that is specific to said database, said session state information comprising a plurality of attributes, said first command to cause a process to be performed, said process selected from the group consisting of;

storing in said database one of said attributes; and

,

retrieving from said database one of said attributes.

14. The computing system of claim 13 wherein said managing the persistence of said session'"'"'s session state information with code provided by said plug-in further comprises storing said session information in a row of a table stored within said database, said table containing session state information for other sessions that are managed according to said session'"'"'s session management criteria.

15. The computing system of claim 14 wherein said managing the persistence of said session'"'"'s session state information with program code provided by said plug-in further comprises translating a third command that is not specific to said database into a fourth command that is specific to said database, said third command to cause a second process to be performed, said second process selected from the group consisting of:

retrieving from said database one of said attributes and a same attribute from the session state information of said other sessions;

retrieving from said database one of said attributes and a same attribute from the session state information of those of said other sessions that are expired, said session also being expired; and

,

retrieving from said database all of said attributes and all attributes from those of said sessions that are expired, said session also being expired.

16. The computing system of claim 13 wherein said managing the persistence of said session'"'"'s session state information with program code provided by said plug-in further comprises translating a third command that is not specific to said database into a fourth command that is specific to said database, said third command to cause a second process to be performed, said second process selected from the group consisting of:

retrieving from said database all of said attributes; and

deleting from said database all of said attributes.

17. The computing system of claim 13 wherein:

said one of said attributes is serialized prior to said storing; and

,

said one of said attributes is deserialized after said storing.

18. The computing system of claim 13 wherein said managing the persistence of said session'"'"'s session state information with program code provided by said plug-in further comprises translating a third command that is not specific to said database into a fourth command that is specific to said database, said third command to cause a second process to be performed, said second process selected from the group consisting of:

retrieving from said database a session identification for said session;

retrieving from said database information used to determine if said session has expired;

updating in said database information used to determine if said session has expired.