Change log handler for synchronizing data sources

• US 7,363,327 B2
• Filed: 05/28/2004
• Issued: 04/22/2008
• Est. Priority Date: 05/28/2004
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Bali, Bahri B., Greenlee, Gordan G.
• Primary Examiner(s): Gaffin; Jeffrey
• Assistant Examiner(s): Veillard; Jacques
• Application Number:
  US10/857,405
• Publication Number:
  US 20050267921A1
• Time in Patent Office: 1,425 Days
• Field of Search: 707 1- 4, 707 7- 10, 707100-102, 707/104.1, 707200-204, 709/203, 709/226, 711/4, 711111-114, 711/202, 711/203, 711/161
• US Class Current: 1/1
• CPC Class Codes: G06F 16/27 Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
• CPC Class Codes: Y10S 707/99952 Coherency, e.g. same view to multiple users
• CPC Class Codes: Y10S 707/99953 Recoverability

Abstract

The present invention provides a change log handler than can accommodate a change log having an entry that includes more than one modification operation or multi-valued attributes. The change log handler typically includes a change parser for parsing change attributes corresponding to the change log that identify changes to the first data source. Such changes can include a plurality of modification operations as reflected in a single entry of the change log. The change log handler also includes a change reflector for applying the changes to a second data source.

Claims

1. A computer-implemented method for synchronizing data sources, comprising:

parsing a change log having a plurality of entries, wherein at least one of the plurality of entries includes a plurality of modification operations for a first data source;

determining changes to the first data source based on the parsing, wherein the changes include the plurality of modification operations of the at least one of the plurality of entries; and

applying the changes to a second data source to synchronize the second data source with the first data source.

2. The method of claim 1, further comprising detecting a type of data for each of the plurality log entries.

3. The method of claim 1, wherein the first data source and the second data sources are directories.

4. The method of claim 3, wherein the directories are LDAP directories.

5. The method of claim 1, wherein the first data source and the second data source are databases.

6. The method of claim 1, wherein the change log is an IBM Directory Server (IDS) change log.

7. The method of claim 1, wherein the parsing step comprising parsing change attributes corresponding to the change log, and wherein the change attributes identify the changes to the first data source as recorded in the change log.

8. The method of claim 7, further comprising receiving the change attributes from a connector in communication with the change log.

9. The method of claim 1, wherein the connector is part of an IBM Directory Integrator (IDI).

10. A computer-implemented method for synchronizing data sources, comprising:

receiving change attributes corresponding to a change log having a plurality of entries, wherein ateast one of the plurality of entries includes a plurality of modification operations for a first data source, and wherein the change attributes identify changes to the first data source as recorded in the change log;

parsing the change attributes to determine the changes, wherein the changes include the plurality of modification operations of the ateast one of the plurality of entries; and

applying the changes to a second data source to synchronize the second data source with the first data source.

11. The method of claim 10, further comprising detecting a type of data for each of the plurality log entries.

12. The method of claim 10, wherein the first data source and the second data sources are directories.

13. The method of claim 12, wherein the directories are LDAP directories.

14. The method of claim 10, wherein the first data source and the second data source are databases.

15. The method of claim 10, wherein the change log is an IBM Directory Server (IDS) change log.

16. The method of claim 15, wherein the receiving step comprises receiving the change attributes from a connector in communication with the change log.

17. The method of claim 10, wherein the connector is part of an IBM Directory Integrator (IDI).