Method Invocation for Persistent Objects with Dynamic Multikeys

• US 20070276778A1
• Filed: 05/15/2006
• Published: 11/29/2007
• Est. Priority Date: 05/15/2006
• Status: Active Grant

• Current Assignee: Avaya Incorporated
• Original Assignee: Avaya Incorporated
• Inventors: Klemm, Reinhard
• Granted Patent: US 10,324,735 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/289 Object oriented databases
• CPC Class Codes: G06F 9/449 Object-oriented method invocation or resolution
• CPC Class Codes: G06F 9/4493 Object persistence

Abstract

A mechanism is disclosed that enables the invocation of methods of object instances that have persistent data and a mutable key. A mutable key capability is advantageous in a variety of applications, such as monitoring a set of users and their login status on a plurality of media servers (e.g., an email server, an instant messaging server, a voice mail server, a video server, an audio-conferencing server, etc.). The methods that can be invoked include get methods, set methods, unset methods, finder methods, destructors, and business methods. Implementations based on the Enterprise JavaBean specification are disclosed for three illustrative embodiments of the present invention. The illustrative embodiments of the present invention can also be implemented in accordance with object persistence mechanisms other than Enterprise JavaBeans.

Claims

1. A process comprising invoking a method that accesses a mutable key for a persistent object instance.

2. The process of claim 1 wherein said method sets the value of said mutable key.

3. The process of claim 1 wherein said mutable key is capable of having a plurality of different values at the same time, and wherein said method comprises at least one of:

adding a value to said mutable key, deleting a value of said mutable key, and changing a value of said mutable key.

4. The process of claim 1 wherein said method comprises at least one of:

generating a persistent object instance, and deleting a persistent object instance.

5. A process comprising invoking a method of an object instance, wherein said object instance has (i) one or more persistent fields and (ii) a method that accesses a mutable key.

6. The process of claim 5 wherein said object instance belongs to an object class that implements an Enterprise JavaBean interface.

7. The process of claim 5 wherein said method sets the value of said mutable key.

8. The process of claim 5 wherein said mutable key is capable of having a plurality of different values at the same time, and wherein said method comprises at least one of:

adding a value to said mutable key, deleting a value of said mutable key, and changing a value of said mutable key.

9. The process of claim 8 wherein said object instance is associated with another object instance that is persistent and comprises a data structure, and wherein said method comprises at least one of:

adding a value of said mutable key to said data structure, deleting a value of said mutable key from said data structure, and changing a value of said mutable key in said data structure.

10. The process of claim 5 wherein said method comprises at least one of:

generating a persistent object instance, and deleting a persistent object instance.

11. A process comprising invoking a method for finding an object instance based on a value of a key, wherein said object instance has (i) one or more persistent fields and (ii) a method that is capable of changing the value of said key.

12. The process of claim 11 wherein said object instance belongs to an object class that implements an Enterprise JavaBean interface.

13. The process of claim 11 wherein said method comprises finding, based on said value of said key, another object instance that is persistent.

14. A process comprising executing a method that accesses a mutable key for a persistent object instance.

15. The process of claim 14 wherein said method sets the value of said mutable key.

16. The process of claim 14 wherein said mutable key is capable of having a plurality of different values at the same time, and wherein said method comprises at least one of:

adding a value to said mutable key, deleting a value of said mutable key, and changing a value of said mutable key.

17. The process of claim 14 wherein said method comprises at least one of:

generating a persistent object instance, and deleting a persistent object instance.

18. A process comprising executing a method of an object instance, wherein said object instance has (i) one or more persistent fields and (ii) a method that accesses a mutable key.

19. The process of claim 18 wherein said object instance belongs to an object class that implements an Enterprise JavaBean interface.

20. The process of claim 18 wherein said method sets the value of said mutable key.

21. The process of claim 18 wherein said mutable key is capable of having a plurality of different values at the same time, and wherein said method comprises at least one of:

adding a value to said mutable key, deleting a value of said mutable key, and changing a value of said mutable key.

22. The process of claim 21 wherein said object instance is associated with another object instance that is persistent and comprises a data structure, and wherein said method comprises at least one of:

adding a value of said mutable key to said data structure, deleting a value of said mutable key from said data structure, and changing a value of said mutable key in said data structure.

23. The process of claim 18 wherein said method comprises at least one of:

generating a persistent object instance, and deleting a persistent object instance.

24. A process comprising executing a method for finding an object instance based on a value of a key, wherein said object instance has (i) one or more persistent fields and (ii) a method that is capable of changing the value of said key.

25. The process of claim 24 wherein said object instance belongs to an object class that implements an Enterprise JavaBean interface.

26. The process of claim 24 wherein said method comprises finding, based on said value of said key, another object instance that is persistent.