Persistent session and data in transparently distributed objects

• US 7,146,532 B2
• Filed: 02/05/2001
• Issued: 12/05/2006
• Est. Priority Date: 02/05/2001
• Status: Expired due to Fees

• Current Assignee: Affiniti, Inc.
• Original Assignee: Affiniti, Inc.
• Inventors: McCabe, Harry
• Primary Examiner(s): Beausoliel, Robert
• Assistant Examiner(s): MCCARTHY, CHRISTOPHER S
• Application Number:
  US09/777,292
• Publication Number:
  US 20020152423A1
• Time in Patent Office: 2,129 Days
• Field of Search: 714/15, 714/4, 714/43, 714/49, 709/313, 709/315, 709/227, 719/313, 719/315, 719/316
• US Class Current: 714/15
• CPC Class Codes: G06F 9/4493 Object persistence

Abstract

This invention presents a method and system for persistent session and data control across transparently distributed objects. Persistent data control enables a system to reconnect users to the appropriate data areas after a system fault. Persistent session control enables a user to reestablish the state of a previous session with the data, regardless of intervening outages at any one or many parts of the network. The invention uses persistent data objects and persistent data control objects to create persistent sessions and data control across the network.

Claims

1. A computerized method to recover session information and data after a change in a network, the method comprising:

connecting a persistent data object to a first persistent data control object;

transacting data in a data area in response to a request by the persistent data object, with the first persistent data control object controlling the transaction of the data in the data area;

dynamically replicating the data area in a plurality of alternate persistent data control objects located anywhere in the network; and

connecting the persistent data object to an alternate persistent data control object upon notification of the change in the system, with the alternate persistent data control object obtaining control of the transaction of the data in the data area upon the change in the network.

2. The method of claim 1, wherein the network comprises an Application comprised of objects, a System Registry, and a Messaging Scheme.

3. The method of claim 2, the method further comprising the persistent data object communicating with the first persistent data control object and the alternate persistent data control object through the Messaging Scheme.

4. The method of claim 2, the method further comprising the determining the change in the network by sending a message to the first persistent data control object to determine the current state of the first persistent data control object.

5. The method of claim 1, wherein the change in the network comprises a failure of the first persistent data control object.

6. The method of claim 1, the method further comprising creating a data area in response to a request by the persistent data object, with the first persistent data control object controlling the creation of the data area.

7. The method of claim 1, the method further comprising connecting the persistent data object to a second persistent data control object.

8. The method of claim 1, the method further comprising storing the data area in a media device.

9. The method of claim 8, wherein the media device is chosen from the list consisting of a memory, hard disc drive, and a networked media device.

10. The method of claim 1, wherein session information is stored in the first persistent data control object and replicated in alternate persistent data control objects.

11. The method of claim 1, wherein the connection of the persistent data object to the alternate persistent data control object is done transparently to a user.

12. The method of claim 1, the method further comprising requesting a transaction of data in the data area by a user, with the user sending the request to the persistent data object.

13. The method of claim 12, wherein the user is selected from the list consisting of a person, a program, a person using a program, a program using a program, and expanding levels of programs using programs.

14. A computerized method to recover session information and data after a change in a network, the method comprising:

connecting a persistent data object to a first persistent data control object;

transacting data in a data area in response to a request by the persistent data object, with the first persistent data control object controlling the transaction of the data in the data area;

dynamically replicating the data area in at least one alternate persistent data control object located anywhere in the network; and

connecting the persistent data object to an alternate persistent data control object upon notification of the change in the system, with the alternate persistent data control object obtaining control of the transaction of the data in the data area upon the change in the network;

wherein the connecting the persistent data object to an alternate persistent data control object additionally comprises negotiating the alternate persistent data control object; and

wherein the negotiating the alternate persistent data control object comprises using a name-based negotiating method.

15. A computerized method to recover session information and data after a change in a network, the method comprising:

connecting a persistent data object to a first persistent data control object;

transacting data in a data area in response to a request by the persistent data object, with the first persistent data control object controlling the transaction of the data in the data area;

dynamically replicating the data area in at least one alternate persistent data control object located anywhere in the network; and

connecting the persistent data object to an alternate persistent data control object upon notification of the change in the system, with the alternate persistent data control object obtaining control of the transaction of the data in the data area upon the change in the network;

wherein the change in the network additionally comprises adding an additional alternate data control object.

16. A computerized method to recover session information and data after a change in a network, the method comprising:

connecting a persistent data object to a first persistent data control object;

transacting data in a data area in response to a request by the persistent data object, with the first persistent data control object controlling the transaction of the data in the data area;

dynamically replicating the data area in at least one alternate persistent data control object located anywhere in the network; and

connecting the persistent data object to an alternate persistent data control object upon notification of the change in the system, with the alternate persistent data control object obtaining control of the transaction of the data in the data area upon the change in the network;

wherein the network comprises an Application comprised of objects, a System Registry, and a Messaging Scheme that determines the change in the network and notifies the persistent data object;

wherein an additional alternate data control object is used for end of day archiving of the data area.

17. A computerized method to recover session information and data after a change in a network, the method comprising:

connecting a persistent data object to a first persistent data control object;

transacting data in a data area in response to a request by the persistent data object, with the first persistent data control object controlling the transaction of the data in the data area;

dynamically replicating the data area in at least one alternate persistent data control object located anywhere in the network; and

connecting the persistent data object to an alternate persistent data control object upon notification of the change in the system, with the alternate persistent data control object obtaining control of the transaction of the data in the data area upon the change in the network;

wherein the network comprises an Application comprised of objects, a System Registry, and a Messaging Scheme;

the method further comprising registering the persistent data control objects with the System Registry, and finding the first persistent data control object by querying the System Registry.