Apparatus and method for versioning persistent objects
US6223344A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1998 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Jun 11, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99944
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method and apparatus for versioning persistent objects which updates the version of a persistent object by splitting the persistent object up into two sections, a header section and a data section. The header section has a data pointer to the data section. The header section determines the object identity of the persistent object and always remains in place. Since the header section of the object always remains intact, the object identity of the persistent object never changes. When updating the version of the persistent object, the persistent object versioning mechanism simply updates the pointer in the header section of the object to reference a newly created data section. Once the persistent object versioning mechanism updates the data pointer to reference the new data section, existing objects can reference the new version of the persistent object using the original object identity of the persistent object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.