Nederlands
Contact
Sitemap
Search
OrganisationEEMCS EPrints Service
 |
|
|
||||||||||||||||||||||||||||||||
|
|
|
|
|
||||||||||||||||||||||||||||||
|
|
|
||||||||||||||||||||||||||||||||
|
|
|
|
|
||||||||||||||||||||||||||||||
|
|
Wieringa, R.J. and de Jonge, W. and Spruit, P.A.
(1994)
Roles and Dynamic Subclasses: a modal logic approach.
In: ECOOP 1994, 4-8 July 1994, Bologna, Italy.
pp. 32-59.
Lecture Notes in Computer Science 821.
Springer.
ISSN 0302-9743
ISBN 3540582029
Full text available as:
Official URL: http://dx.doi.org/10.1007/BFb0052175 AbstractIn this paper, we argue that object-oriented models must be able to represent three kinds of taxonomic structures: static subclasses, dynamic subclasses and role classes. If CAR is a static subclass of VEHICLE, then a vehicle that is not a car can never migrate to the CAR subclass. If EMPloyee is a dynamic subclass of PERSON, then a PERSON that is not an employee may migrate to EMP. In both cases, an instance of the subclass is identical to an instance of the superclass. Finally, if EMP is modeled as a role class of PERSON every employee differs from every person, but a PERSON instance can acquire one or more EMP instances as roles. We outline an approach to formalizing these taxonomic structures in order-sorted dynamic logic with equality.
Export this item as: To correct this item please ask your editor Repository Staff Only: edit this item |
|
|
||||||||||||||||||||||||||||||
|
|
|
||||||||||||||||||||||||||||||||
|
|
|
|
|
||||||||||||||||||||||||||||||
|
|
|
||||||||||||||||||||||||||||||||
