Recoverable proxy object in an object oriented environment

Details Recoverable proxy object in an object oriented environment Recoverable proxy object in an object oriented environment

1996-09-06

1999-05-11

Levy, Stuart S.

Data processing: database and file management or data structures

Database design

Data structure types

395683, 707103, G06F15/163

Patent

active

059037253

ABSTRACT:
A mechanism is described for protecting a server against invalid usage of proxy objects after malfunction of a server and also for transparently re-creating proxy objects in a client of a client-server distributed processing system. A proxy class is used that has additional attributes indicating the name of the target object in the server, an indication as to whether the name is presently valid and an alternate pointer to the target object. A proxy register object in the client maintains pointers to all the proxy objects which point to objects in the server. On malfunction of the server, and consequent invalidity of the proxy objects, the proxy register object causes all proxy objects to be refreshed.

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S Menon, R J LeBlanc Jr, "Object Replacement using Dynamic Proxy Updates", Proceedings of the Second International Workshop on configurable distributed systems (1994), pp. 82-91.
S Maffeis, "A Flexible System Design to Support Object-Groups and Object-Oriented Distributed Programming", Object based distributed programming ECOOP '93 Workshop proceedings, 1994, pp. 213-224.
A Dave, M Sefika, R Campbell, "Proxies, Application Interfaces, and Distributed Systems", "Proceedings of the Second International Workshop on Object Orientation in Operating Systems", 1992, pp. 212-220.
A. Dave et al, "Proxies, Application Interfaces, and Distributed Systems", "Proceedings of the Second International Workshop on Object Orientation in Operating Systems," 1992, pp. 212-220, 1992.

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