Localities and Indirections-A Foundation for Interaction in Confederated Persistent Object Stores

摘要

Given a persistent object store such as the Napier88 store, this paper develops a model of interaction allowing programs in one store to access remote objects and to distribute their computation to other cooperating stores. Our model is based on a mechanism that allows stores to indirectly access one another's resources. Computations initiated at a store may directly access local objects but to access objects elsewhere, indirections are provided to allow them to "cross-over." The model we proposed differs from existing ones in that we do not seek to blur the distinction between remote and local objects as in one-world models. Wide-areas are the primary networks that our model targets and we illustrate its use in Napier88 but the model should integrate cleanly in other similar object-based or object-oriented languages.