The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 23, 2003
Filed:
Nov. 06, 1997
Arthur Reginald Greef, Seattle, WA (US);
Thomas Robert Maguire, Brewster, NY (US);
Frank Castellucci, Amawalk, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
This Object-Oriented programming system migrates persistent objects when their class declarations are modified. The objects and their class descriptions are persistently stored and the persistent versions of an objects' superclass descriptions are compared to later versions of the objects' superclass descriptions. When a persistent version and a later version of the class description for the object differ, the object is migrated from the persistent version to the later version based on the differences between the two superclass descriptions. Finally, the migrated object is persistently stored with changes in its persistent class description.