Methods and apparatus for providing transparent persistence in a distributed object operating environment

Patent 5848419 Issued on December 8, 1998. Estimated Expiration Date:

May 21, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

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Inventors

Application

No. 859888 filed on 05/21/1997

US Classes:

707/103R, Object-oriented database structure707/100, DATABASE SCHEMA OR DATA STRUCTURE715/513Structured document (e.g., HTML, SGML, ODA, CDA)

Examiners

Primary: Amsbury, Wayne
Assistant: Corrielus, Jean B.

Attorney, Agent or Firm

Beyer & Weaver, LLP

International Class

G06F 017/30

Abstract

A number of methods and apparatus are disclosed for providing transparent persistence in a distributed object operating environment are disclosed. In general, the present invention teaches replacing the value in the object's data pointer (addressing information which points to the objects limited persistent memory) with a pointer value which points out to another persistent storage device. In preferred embodiments, a persistent storage manager (external and transparent to the distributed object) maintains the object data. In a specific embodiment, a distributed object framework is provided which has the mechanism for providing the transparent persistent strategy of the present invention. An object developer develops object implementations which the distributed object generates distributed objects with, in the process automatically providing transparent persistence.

Other References

Rao, Bindu R., C++ and the OOP Paradigm, 1993, published by McGraw-Hill Inc., pp. 165-171
Millard et al., "Run-Time Support and Storage Management for Memory-Mapped Persistent Objects," Proceedings of 13th International Conference on Distributed Computing Systems, (Cat 93CH3282-1), 25-28 May 1993, ISBN 0-8186-3770-6, IEEE Computer Society Press, Los Alamitos, CA
Marc Shapiro, "A binding Protocol for Distributed Shared Objects," Proceedings of the 14th International Conference on Distributed Computing Systems, Jun. 21-24, 1994, ISBN 0-8186-5840-1, IEEE Computer Society Press, L Alamitos, CA
Richard P. Gabriel, "Persistence in a programming environment: an object-oriented database can make the difference", Dr. Dobb's Journal, v17, n12, p. 46(6), Dec. 199