METHOD, SYSTEM, AND PROGRAM PRODUCT FOR ALIGNING MODELS

• US 20080275895A1
• Filed: 05/03/2007
• Published: 11/06/2008
• Est. Priority Date: 05/03/2007
• Status: Abandoned Application

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Luu, Duc N., Leroux, Daniel D., Weng, Tao, Letkeman, Kim D.
• Application Number:
  US11/744,090
• Publication Number:
  US 20080275895A1
• Time in Patent Office: Days
• US Class Current: 707/101
• CPC Class Codes: G06F 8/71 Version control security arrangements therefor G06F21/57; Configuration management

Abstract

The present invention provides a model identity re-alignment algorithm that allows models with similar structures but substantial identity differences to be aligned such that all similar elements have the same identity. This causes the two models to appear to have come from a common ancestor. Once the two models have been aligned with one another, it can be used as a contributor in a two or three way merge and thus, becomes a part of the normal development work flow. This allows any two models to be aligned and then participate in a normal version control work flow. It also helps eliminate massive numbers of trivial differences. It addition, it is simpler and less error prone than manual systems.

Claims

1. A method for aligning a model, comprising:

selecting a descendant model to be aligned;

selecting an ancestor model to serve as a baseline set of identities;

changing an identifier of the descendant model to match an identifier of the ancestor model;

creating a database of matching keys with new identities by iterating the ancestor model;

iterating the descendant model and generating a matching descendant key for each element of the descendant model; and

searching the database for the matching descendant key for each element of the descendant model.

2. The method of claim 1, further comprising:

if the searching fails to locate a descendant matching key for an element of the descendent model in the database;

generating a new identifier for the descendent model; and

recording the identity with the descendant matching key in the database.

3. The method of claim 2, the generating comprising:

if the element has an identifier;

storing the identifier;

if the element lacks an identifier;

determining if the element has a parent identifier; and

adding a unique identifier to the parent identifier for the element.

4. The method of claim 1, further comprising compressing the database.

5. The method of claim 4, the compressing comprising compressing the database using a cyclic redundancy check (CRC).

6. The method of claim 5, the CRC comprising CRC32.

7. The method of claim 1, further comprising mapping a second descendant model to the descendant model, if the second descendant model did not originate from the ancestor model.

8. A system for aligning a model, comprising:

a selection module for selecting a descendant model to be aligned and for selecting an ancestor model to serve as a baseline set of identities;

an identifier module for changing an identifier of the descendant model to match an identifier of the ancestor model;

a database module for creating a database of matching keys with new identities by iterating the ancestor model;

an iteration module for iterating the descendant model and generating a matching descendant key for each element of the descendant model; and

a query module for searching the database for the matching descendant key for each element of the descendant model.

9. The system of claim 8, the identifier module being further adapted to:

generate a new identifier for the descendent model; and

record the identity with the descendant matching key in the database.

10. The system of claim 9, the identifier module being adapted to generate the new identifier by:

if the element has an identifier;

storing the identifier;

if the element lacks an identifier;

determining if the element has a parent identifier; and

adding a unique identifier to the parent identifier for the element.

11. The system of claim 8, further comprising a compression module for compressing the database.

12. The system of claim 11, the compression module being adapted to compress the database using a cyclic redundancy check (CRC).

13. The system of claim 12, the CRC comprising CRC32.

14. The system of claim 8, further comprising a mapping module for mapping a second descendant model to the descendant model, if the second descendant model did not originate from the ancestor model.

15. A program product stored on a computer readable medium for aligning a model, the computer readable medium comprising program code for causing a computer system to:

select a descendant model to be aligned;

select an ancestor model to serve as a baseline set of identities;

change an identifier of the descendant model to match an identifier of the ancestor model;

create a database of matching keys with new identities by iterate the ancestor model;

iterate the descendant model and generate a match descendant key for each element of the descendant model; and

search the database for the match descendant key for each element of the descendant model.

16. The program product of claim 15, the computer readable medium comprising program code for causing the computer system to:

if the search fails to locate a descendant match key for an element of the descendent model in the database;

generate a new identifier for the descendent model; and

record the identity with the descendant match key in the database.

17. The program product of claim 16, the computer readable medium comprising program code for causing the computer system to:

if the element has an identifier;

store the identifier;

if the element lacks an identifier;

determine if the element has a parent identifier; and

add a unique identifier to the parent identifier for the element.

18. The program product of claim 15, further the computer readable medium comprising program code for causing the computer system to compress the database.

19. The program product of claim 18, the computer readable medium comprising program code for causing the computer system compress the database us a cyclic redundancy check (CRC).

20. The program product of claim 19, the CRC comprising CRC32.

21. The program product of claim 15, the computer readable medium comprising program code for causing the computer system map a second descendant model to the descendant model, if the second descendant model did not originate from the ancestor model.

22. A method for deploying a system for aligning a model, comprising:

providing a computer infrastructure being operable to;

select a descendant model to be aligned;

select an ancestor model to serve as a baseline set of identities;

change an identifier of the descendant model to match an identifier of the ancestor model;

create a database of matching keys with new identities by iterate the ancestor model;

iterate the descendant model and generate a match descendant key for each element of the descendant model; and

search the database for the match descendant key for each element of the descendant model.