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Volume 35, Number 2, 1996
Object technology |
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Table of contents:  HTML |
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Copyright info |
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Technical note—From dynamic supertypes to subjects: A natural way to specify and develop systems |
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by W. H. Harrison, H. Kilov, H. L. Ossher, and I. Simmonds |
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When we understand, specify, and develop systems, we use certain
concepts and constructs to deal with complexity. Object-oriented (OO)
approaches provide good ways for doing so. However, many existing OO
approaches (perhaps based on object models used in existing OO
languages) cannot solve important problems encountered in large and
complex systems. For example, we often have to deal with properties
of "things" that cannot be represented in a neat hierarchy.
Some of these properties may significantly change with time. Moreover,
many of these properties refer to collections of objects without
identifying a single object as "owner" of each property. The
authors of this technical note have separately proposed approaches for
solving these problems, but at very different stages of the
development life cycle. However, the underlying concepts of these
approaches are so close that they can be successfully combined to
provide a common solution that encompasses all stages of the life
cycle.
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