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From: haim@taichi.uucp (24122-Haim Kilov(L028)m000)
Newsgroups: comp.object
Subject: Re: "Wrappers" and "Container Objects"
Keywords: wrappers, container objects
Message-ID: <1991Jun25.144937.2059@porthos.cc.bellcore.com>
Date: 25 Jun 91 14:49:37 GMT
References: <D2150022.ix4dgb@bse.com>
Sender: netnews@porthos.cc.bellcore.com (USENET System Software)
Reply-To: haim@taichi.UUCP (24122-Haim Kilov)
Organization: Bellcore, Livingston, NJ
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I have tried to define a "general", i.e., not necessarily homogenous, composite
entity in [H.Kilov. Generic information modeling concepts: a reusable component
library, TOOLS'91, Prentice-Hall, 1991, pp. 187-201]. This definition seems
to be close enough to Y.Wand's [Y.Wand. A proposal for a formal model of
objects. In: Object-oriented concepts, databases, and applications. ACM Press
(Addison-Wesley), 1989, pp. 537-559], with an important exception concerning
emergent properties: Wand considers all emergent properties of a composite
to be "linked by object laws" to properties of its constituents, whereas
this need not be the case. There are some differences concerning resultant
properties as well.

Hope this helps.

-Haim Kilov
haim@bcr.cc.bellcore.com