Object state change and history management mechanism
US6292803A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1997 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Nov 18, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99943
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system of managing changes in the states of interrelated objects provides for synchronization of change notifications transferred between source and target objects. In one embodiment, target objects subscribe to state changes in source objects and the change notifications are provided with unique temporal state identifiers such as a system time stamp or an assigned number to provide a temporal dimension and allow synchronization of the notifications at the target object. The state changes are actually in the form of methods applied to the source, and equivalent or identical methods are then applied to the target. A log of change notifications is provided, and each of the notifications are applied to the target object to synchronize it with relevant source objects to which it is dependent upon and to a particular selected point in time. The source objects comprise relational database objects, objects as in object-oriented systems and objects representing physical phenomena; and the target objects comprise views of data in the source objects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.