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Towards Overcoming Deficiencies in Constraint Diagrams

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2 Author(s)
Stapleton, G. ; Univ. of Brighton, Brighton ; Delaney, A.

The constraint diagram language was designed to be used in conjunction with the Unified Modelling Language (UML), primarily for placing formal constraints on software models. In particular, constraint diagrams play a similar role to the textual object constraint language in that they can be used for specifying system invariants and operation contracts in the context of a UML model. Constraint diagrams can also be used independently of the UML. In this paper, we illustrate a range of counter-intuitive features of constraint diagrams and highlight some (potential) expressiveness limitations. We propose a generalized version of the constraint diagram language that overcomes the illustrated counter-intuitive features and limitations.

Published in:

Visual Languages and Human-Centric Computing, 2007. VL/HCC 2007. IEEE Symposium on

Date of Conference:

23-27 Sept. 2007