Method for creating object inheritance
US6230159A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1997 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | Apr 30, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99944
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An object-oriented interface is used to provide inheritance of object property information. A set of base object classes are created and stored in a persistent object state in non-volatile storage. A set of derived objects are then created using the base object classes and inherited base object property information. Derived object classes are saved in a persistent object state in non-volatile storage as a "delta" or difference between the derived object information and the inherited base object information. Saving only the derived class objects as a delta saves a significant amount of computer resources. When derived object is loaded, the base object class from which the derived object class inherited information is loaded first, then the derived object class delta is loaded. The two step loading process allows any changes made to the base object class to be automatically reflected in the derived object class by inheritance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.