Persistency support for mobile objects in the COMET heterogeneous environment

Open distributed computing in an internetwork environment has gained considerable attention. The 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