System, method, and computer program product for providing and incremental retrieval adaptor

• US 5,900,000 A
• Filed: 03/05/1998
• Issued: 05/04/1999
• Est. Priority Date: 06/07/1995
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Korenshtein, Roni
• Primary Examiner(s): Kulik, Paul V.
• Assistant Examiner(s): Corrielus, Jean M.
• Application Number:
  US09/036,311
• Time in Patent Office: 425 Days
• Field of Search: 707/200, 707/202, 707/203, 707/201, 707/3, 395/707
• US Class Current: 1/1
• CPC Class Codes: G06F 8/48 Incremental compilation software reuse G06F8/36
• CPC Class Codes: G06F 8/71 Version control security arrangements therefor G06F21/57; Configuration management
• CPC Class Codes: Y10S 707/99933 Query processing, i.e. searching
• CPC Class Codes: Y10S 707/99952 Coherency, e.g. same view to multiple users
• CPC Class Codes: Y10S 707/99953 Recoverability

Abstract

A computer program product comprising at least one controller to enable a processor to perform incremental changes in storage and retrieval. The at least one controller comprises an incremental storage adaptor for enabling the processor to store a change associated with a base file, rather than modifying the base file by the change and storing the result as a new file. An incremental retrieval adaptor is included for enabling the processor to merge the change with the base file thereby forming a logical new file. The incremental retrieval adaptor can perform the merging in response to a call from an application running on the processor or another processor, and the incremental retrieval adaptor then provides or otherwise makes the logical new file available to the application.

Claims

1. A computer system for accessing and retrieving data, said computer system comprising:

a processor;

a base file;

a change associated with the base file, rather than modifying the base file by the change and storing the result as a new file; and

an incremental retrieval adaptor for enabling the processor to merge the change with the base file thereby forming a logical new file;

wherein the incremental retrieval adaptor performs the merging in response to a call from an application running on the processor, and the incremental retrieval adaptor then provides or otherwise makes the logical new file available to the application.

2. The system according to claim 1, wherein the change is stored in a domained incremental change repository.

3. The system according to claim 2, wherein the call passes information identifying the domained incremental change repository and the base file to the incremental retrieval adaptor.

4. The system according to claim 2, wherein the incremental retrieval adaptor interfaces with the domained incremental change repository in a process to form a logical new file.

5. The system according to claim 2, wherein the base file has changes in two or more domained incremental change repositories.

6. The system according to claim 2, wherein the base file has a default domained incremental change repository.

7. A method of accessing and retrieving data in a computer system having a processor, said method comprising the steps of:

executing an application by the processor;

accessing by an incremental retrieval adaptor a base file and a change associated with the base file, rather than accessing a new file resulting from the base file modified by the change; and

merging by the incremental retrieval adaptor the change with the base file thereby forming a logical new file;

wherein the incremental retrieval adaptor performs the merging in response to a call from the application running on the processor, and the incremental retrieval adaptor then provides or otherwise makes the logical new file available to the application.

8. The method according to claim 7, wherein the change is stored in a domained incremental change repository.

9. The method according to claim 8, wherein the call passes information identifying the domained incremental change repository and the base file to the incremental retrieval adaptor.

10. The method according to claim 8, wherein the incremental retrieval adaptor interfaces with the domained incremental change repository in a process to form a logical new file.

11. The method according to claim 8, wherein the base file has changes in two or more domained incremental change repositories.

12. The method according to claim 8, wherein the base file has a default domained incremental change repository.

13. An article of manufacture for use in a computer system for accessing and retrieving data in the computer system, said computer system having a processor, said article of manufacture comprising a computer-readable storage medium having a computer program embodied in said medium which may cause the computer system to:

execute an application by the processor;

access by an incremental retrieval adaptor a base file and a change associated with the base file, rather than accessing a new file resulting from the base file modified by the change; and

merge by the incremental retrieval adaptor the change with the base file thereby forming a logical new file;

wherein the incremental retrieval adaptor performs the merging in response to a call from the application running on the processor, and the incremental retrieval adaptor then provides or otherwise makes the logical new file available to the application.

14. The article of manufacture according to claim 13, wherein the change is stored in a domained incremental change repository.

15. The article of manufacture according to claim 14, wherein the call passes information identifying the domained incremental change repository and the base file to the incremental retrieval adaptor.

16. The article of manufacture according to claim 14, wherein the incremental retrieval adaptor interfaces with the domained incremental change repository in a process to form a logical new file.

17. The article of manufacture according to claim 14, wherein the base file has changes in two or more domained incremental change repositories.

18. The article of manufacture according to claim 14, wherein the base file has a default domained incremental change repository.