The Dagstuhl Middle Metamodel (DMM) is an extensible schema for static models of software. It is a middle-level metamodel since it captures program level entities and their relationships, rather than a full abstract syntax graph (lower level), or architectural abstractions (higher level). DMM can be used to represent models extracted from software written in most common object-oriented and procedural languages. This paper presents the main features of DMM.
The distributed nature of a typical web application combined with the rapid evolution of underlying platforms demands for a plug-in component architecture. Nevertheless, code for controlling distributed activities is usually spread over multiple subsystems, which makes it hard to dynamically reconfigure coordination services. This paper investigates coordination components as a way to encapsulate the coordination of a distributed system into a separate, pluggable entity. In an object-oriented context we introduce two design guidelines (namely, "'turn contracts into objects" and "turn configuration into a factory object") that help developers to separate coordination from computation and to develop reusable and flexible solutions for coordination in distributed systems.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.