Editorial - Object-Oriented Systems

Editorial: Aliasing in object-oriented systems

Aliasing is naturally endemic in object-oriented programs. Every object in an object-oriented program can refer to many other objects, so the overall topology of a program is a general graph. The state of an object can rely on the states of all of the other objects it references. Aliasing occurs when one object is reachable via multiple paths, usually because it is referenced by several other o...

DIF8901 Object-Oriented Systems

1. Abstract This essay presents two object based techniques whose interrelations are hotly debated on various forums on the world wide web. The first is the common object orientation approach, and the other is frame based, knowledge based systems. There are so many similarities between the two, that many people view them as the same. Today we have object extensions to " AI languages " that can ...

Refactoring Object-Oriented Systems

Refactoring of information systems is hard, for two reasons. On the one hand, large databases exist which have to be adjusted. On the other hand, many programs access that data. These programs all have to be migrated in a consistent manner such that their semantics does not change. It cannot be relied upon, however, that no running processes exist during such a migration. Consequently, a refact...

Correct Object-Oriented Systems in

Operating Systems: Why Object-Oriented?

The implementor of an operating system service faces inherent dilemmas in choosing implementation strategies. A new approach to operating system design is emerging in which, rather than attempting to hide these dilemmas, they are exposed to clients, using a meta-protocols. Objectoriented programming techniques play an important role in enabling meta-protocols to expose these dilemmas to the cli...