Realizing the leasing concept in CORBA-based applications

ABSTRACT

Although in recent years the concept of leasing has become more and more popular in the field of distributed object-oriented systems, it has not yet been incorporated in the current specification of the widespread CORBA standard.In this paper, we present an approach to the problem of realizing the leasing concept in a CORBA environment. We examine different leasing variants, such as exclusive or shared leasing, leasing with or without prolongation, etc., describe different ways to implement these variants in CORBA, e.g., based on a specialized object adapter, a runtime library or framework, or a CORBA service, and we discuss the advantages and disadvantages of each approach.Furthermore, we show how existing CORBAservices such as Naming, Trading, and Property Service can benefit from leasing facilities. Finally, we briefly present some architectural details of our own implementation of an exemplary CORBA Leasing Service.

REFERENCES

• 1: M. Aleksy , R. Gitzel, Design and Implementation of a Leasing Service for CORBA-Based Applications, Proceedings of the First International Symposium on Cyber Worlds (CW'02), p.0054, November 06-08, 2002
• 2: Belaïd, D., Provenzano, N. and Taconet, Ch. Dynamic Management of CORBA Trader Federation. In: Proc. of 4th USENIX Conf. on Object-Oriented Technologies and Systems (COOTS), 27.-30. April 1998, Santa Fe, New Mexico, USA.
• 3: Jain, P. and Kircher, M. Leasing. In Proc. of 7th Patterns Languages of Programs Conference (PLoP 2000), 13-16 August 2000, Allerton Park, Monticello, Illinois, USA.
• 4: Thomas J. Mowbray , Raphael C. Malveau, CORBA design patterns, John Wiley & Sons, Inc., New York, NY, 1997
• 5: OMG. Event Service Specification Version 1.2; OMG Technical Document Number formal/2004-10-02, 2004.
• 6: OMG. Licensing Service Specification. OMG Technical Document Number formal/2000-06-17, 2000.
• 7: OMG. Naming Service Specification Version 1.3. OMG Technical Document Number formal/2004-10-03, 2004.
• 8: OMG: Property Service Specification. OMG Technical Document Number formal/2000-06-22, 2000.
• 9: OMG. The Common Object Request Broker: Architecture and Specification Version 3.0.3. OMG Technical Document Number formal/2004-03-12, 2004.
• 10: OMG. Time Service Specification Version 1.1. OMG Technical Document Number formal/02-05-06, 2002.
• 11: OMG. Trading Object Service Specification. OMG Technical Document Number formal/2000-06-27, 2000.
• 12: Sun Microsystems Inc. Distributed Leasing Specification. July 1998.
• 13: Sun Microsystems Inc. JiniTM Architecture Specification. December 2001.

INDEX TERMS

Keywords:
CORBA, distributed systems, leasing, services