Method and system for automatic object refresh

• US 6,009,440 A
• Filed: 09/19/1997
• Issued: 12/28/1999
• Est. Priority Date: 09/19/1997
• Status: Expired due to Term

• Current Assignee: Verizon Patent and Licensing Incorporated (Verizon Communications Inc.)
• Original Assignee: MCI Communications Corporation (Verizon Communications Inc.)
• Inventors: Johnson, William J., Watson, Kevin K.
• Primary Examiner(s): Black, Thomas G.
• Assistant Examiner(s): Mizrahi, Diane D.
• Application Number:
  US08/934,164
• Time in Patent Office: 830 Days
• Field of Search: 707/1-10, 707/100, 707/200-204, 705/28, 702/182, 710/200, 710/39, 712/1, 713/323, 713/200, 345/339, 345/340, 345/344, 345/352, 345/511, 364/238.3, 395/676, 395/682, 395/500, 395/709, 395/712, 395/230, 709/230, 380/4, 380/24
• US Class Current: 1/1
• CPC Class Codes: G06F 16/2358 Change logging, detection, and notification replication G06F16/27
• CPC Class Codes: G06F 16/2372 Updates performed during offline database operations
• CPC Class Codes: G06F 9/4488 Object-oriented
• CPC Class Codes: Y10S 707/99952 Coherency, e.g. same view to multiple users
• CPC Class Codes: Y10S 707/99953 Recoverability
• CPC Class Codes: Y10S 707/99954 Version management

Abstract

A method and system for automatic object refresh. A target object specification is associated to a source object specification for performing a replacement (refresh) of at least one target object with a corresponding source object. When a target object is accessed for the first time, or released from a last access, one or more source objects may replace (refresh) the locations of one or more corresponding target objects. A comparison of values of an identical attribute may be performed, such as a date/time stamp, or trap count, of corresponding source and target objects. The refresh may be conditional depending on the outcome of the comparison. The conditional refresh is: an automatic replacement of at least one of the objects of the target object specification with a corresponding object of the source object specification, an automatic asynchronous notification that a more current or suitable object exists and option for automatic refresh therefrom, or an automatic replacement of at least one of the objects of the target object specification with a corresponding object of likely better stability. The source object specification and target object specification may be specified with wildcards, map files, or environment variables. The source objects and target objects may be located locally, or remotely, to the data processing system that accesses the objects.

Claims

1. A method of automatic refresh of objects in a data processing system, comprising the steps of:

determining an ordered set of target objects in a target object specification;

determining an ordered set of source objects in a source object specification, said ordered set of source objects corresponding by order to said ordered set of target objects;

comparing values of identical attributes of an accessed target object of said ordered set of target objects with a corresponding source object of said ordered set of source objects

assessing a difference in said values of identical attributes;

performing a conditional refresh to the location of said accessed target object with said corresponding source object in accordance to said difference;

parsing and deciphering configurations of said data processing system;

building a refresh table in system memory that is semantically equivalent to said configurations; and

associating parameters specified with said configurations to said target object specification and said source object specification in said refresh table.

2. The method of claim 1 wherein the step of performing a conditional refresh to the location of said accessed target object with said corresponding source object in accordance to said difference, comprises the steps of:

determining said accessed target object associated to a system trap;

incrementing a trap count for said accessed target object;

determining if said trap count exceeds a trap tolerance configured with said parameters; and

performing a refresh of said accessed target object with said corresponding source object in accordance with said trap count in relation to said trap tolerance.

3. A method of automatic refresh of objects in a data processing system, comprising the steps of:

determining an ordered set of target objects in a target object specification;

determining an ordered set of source objects in a source object specification, said ordered set of source objects corresponding by order to said ordered set of target objects;

comparing values of identical attributes of an accessed target object of said ordered set of target objects with a corresponding source object of said ordered set of source objects, wherein said identical attributes comprises trap attributes of said accessed target object and said corresponding source object;

assessing a difference in said values of identical attributes; and

performing a conditional refresh to the location of said accessed target object with said corresponding source object in accordance to said difference.

4. The method of claim 3 wherein said identical attributes comprises date/time stamps of said accessed target object and said corresponding source object.

5. The method of claim 3 wherein the step of performing a conditional refresh to the location of said accessed target object with said corresponding source object in accordance to said difference, comprises the step of automatically copying any subset of source objects from said ordered set of source objects to the locations of corresponding target objects from said ordered set of target objects.

6. The method of claim 3 wherein the step of performing a conditional refresh to the location of said accessed target object with said corresponding source object in accordance to said difference, comprises the step of automatically performing a refresh before the first access of said accessed target object, or after the last release from access of said accessed target object.

7. The method of claim 3 wherein the step of performing a conditional refresh to the location of said accessed target object with said corresponding source object in accordance to said difference, comprises the steps of:

presenting an asynchronous prompt to a user of said data processing system, said prompt indicating information describing a pending refresh;

accepting a user action from said user prompt; and

performing a conditional refresh of said accessed target object with said corresponding source object in accordance with said user action.

8. The method of claim 3 wherein said accessed target object is one of either locally located, or remotely located, to said data processing system.

9. The method of claim 3 wherein said corresponding source object is one of either locally located, or remotely located, to said data processing system.

10. A method of automatic refresh of objects in a data processing system, comprising the steps of:

determining an ordered set of target objects in a target object specification;

determining an ordered set of source objects in a source object specification, said ordered set of source objects corresponding by order to said ordered set of target objects;

determining an unconditional refresh of at least one accessed target object of said ordered set of target objects with a corresponding source object of said ordered set of source objects; and

performing a refresh to the location of said accessed target object with said corresponding source object.

11. A data processing system for automatic refresh of objects, said data processing system comprising:

means for determining an ordered set of target objects in a target object specification,

means for determining an ordered set of source objects in a source object specification, said ordered set of source objects corresponding by order to said ordered set of target objects;

means for comparing values of identical attributes of an accessed target object of said ordered set of target objects with a corresponding source object of said ordered set of source objects, and assessing a difference in said values of identical attributes;

means for performing a conditional refresh to the location of said accessed target object with said corresponding source object in accordance to said difference;

means for parsing and deciphering configurations of said data processing system;

means for building a refresh table in system memory that is semantically equivalent to said configurations; and

means for associating parameters specified with said configurations to said target object specification and said source object specification in said refresh table.

12. The system of claim 11 wherein said means for performing a conditional refresh to the location of said accessed target object with said corresponding source object in accordance to said difference, comprises:

means for determining said accessed target object associated to a system trap;

means for incrementing a trap count for said accessed target object;

means for determining if said trap count exceeds a trap tolerance configured with said parameters; and

means for performing a refresh of said accessed target object with said corresponding source object in accordance with said trap count in relation to said trap tolerance.

13. A data processing system for automatic refresh of objects, said data processing system comprising:

means for determining an ordered set of target objects in a target object specification;

means for determining an ordered set of source objects in a source object specification, said ordered set of source objects corresponding by order to said ordered set of target objects;

means for comparing values of identical attributes of an accessed target object of said ordered set of target objects with a corresponding source object of said ordered set of source objects and assessing a difference in said values of identical attributes, wherein said identical attributes comprises trap attributes of said accessed target object and said corresponding source object; and

means for performing a conditional refresh to the location of said accessed target object with said corresponding source object in accordance to said difference.

14. The system of claim 13 wherein said identical attributes comprises date/time stamps of said accessed target object and said corresponding source object.

15. The system of claim 13 wherein said means for performing a conditional refresh to the location of said accessed target object with said corresponding source object in accordance to said difference, comprises means for automatically copying any subset of source objects from said ordered set of source objects to the locations of corresponding target objects from said ordered set of target objects.

16. The system of claim 13 wherein said means for performing a conditional refresh to the location of said accessed target object with said corresponding source object in accordance to said difference, comprises means for automatically performing a refresh before the first access of said accessed target object, or after the last release from access of said accessed target object.

17. The system of claim 13 wherein said means for performing a conditional refresh to the location of said accessed target object with said corresponding source object in accordance to said difference, comprises:

means for presenting an asynchronous prompt to a user of said data processing system, said prompt indicating information describing a pending refresh;

means for accepting a user action from said user prompt; and

means for performing a conditional refresh of said accessed target object with said corresponding source object in accordance with said user action.

18. The system of claim 13 wherein said accessed target object is one of either locally located, or remotely located, to said data processing system, and wherein said corresponding source object is one of either locally located, or remotely located, to said data processing system.