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Multi-object cooperation in distributed object bases

Kottmann, Dietmar; Lockemann, Peter C.; Walter, Hans-Dirk


It is an emerging trend to build large information systems in a
component-based fashion where the components follow the concept of
object. Applications are constructed by organizing pre-built objects
such that they cooperate with each other to perform some task.
However, considerable programming effort is required to express
multi-object constraints in terms of the traditional message-passing
mechanism. This observation lead many authors to suggest
communication abstractions in object models. One promising approach
is to separate multi-object constraints from the objects and collect
them into a separate construct. We call this construct an alliance.

Unlike other approaches we allow alliances to involve large sets of
long-lived objects which may dynamically vary during the - also
potentially long - life-time of the alliance. Alliances are not only
visible at the specification level but are also computational
entities which enforce multi-object constraints at run-time.
They do so in an unreliable world, i.e., we do not assume that
objects will always meet their obligations in a cooperation.

Since objects may often be distributed across a network, we
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Volltext §
DOI: 10.5445/IR/34495
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Programmstrukturen und Datenorganisation (IPD)
Institut für Telematik (TM)
Publikationstyp Buch
Publikationsjahr 1995
Sprache Englisch
Identifikator urn:nbn:de:swb:90-AAA344951
KITopen-ID: 34495
Erscheinungsvermerk Karlsruhe 1995. (Interner Bericht. Fakultät für Informatik, Universität Karlsruhe. 1995,16.)
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