Persistency Support for Mobile Objects in the COMET Heterogeneous Environment

Open distributed computing in an internetwork environment has gained considerable attention in the past few years. This paper presents COMET, a Common Object Management EnvironmenT, that investigates basic problems associated with distributed computing in an internet environment with mobile objects. COMET's persistency support is based on typed memory, manipulated by persistent actions. The use of typed memory enables transparent handling of the presentation management issues that are unavoidable in a heterogeneous environment. Persistent actions on the other hand ensure that the typed memory is manipulated in a consistent manner. The typed memory approach presents a conceptually simple persistency model to the object programmer. The approach is general enough to be applied to other problem areas, e.g. for the realization of replicated and atomic objects. 1. Introduction In the past few years world-wide connectivity of computing equipment has become a reality. Local computing faciliti..