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Computer Science > Software Engineering

arXiv:1305.6114v1 (cs)
[Submitted on 27 May 2013]

Title:Relaxing Behavioural Inheritance

Authors:Nuno Amálio (University of Luxembourg)
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Abstract:Object-oriented (OO) inheritance allows the definition of families of classes in a hierarchical way. In behavioural inheritance, a strong version, it should be possible to substitute an object of a subclass for an object of its superclass without any observable effect on the system. Behavioural inheritance is related to formal refinement, but, as observed in the literature, the refinement constraints are too restrictive, ruling out many useful OO subclassings. This paper studies behavioural inheritance in the context of ZOO, an object-oriented style for Z. To overcome refinement's restrictions, this paper proposes relaxations to the behavioural inheritance refinement rules. The work is presented for Z, but the results are applicable to any OO language that supports design-by-contract.
Comments: In Proceedings Refine 2013, arXiv:1305.5634
Subjects: Software Engineering (cs.SE)
ACM classes: D.2.4
Cite as: arXiv:1305.6114 [cs.SE]
  (or arXiv:1305.6114v1 [cs.SE] for this version)
  https://doi.org/10.48550/arXiv.1305.6114
Journal reference: EPTCS 115, 2013, pp. 68-83
Related DOI: https://doi.org/10.4204/EPTCS.115.5

Submission history

From: EPTCS [view email] [via EPTCS proxy]
[v1] Mon, 27 May 2013 05:40:17 UTC (273 KB)
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