Designing object systems: object-oriented modelling with Syntropy
Designing object systems: object-oriented modelling with Syntropy
The object constraint language: precise modeling with UML
The object constraint language: precise modeling with UML
Modelling systems: practical tools and techniques in software development
Modelling systems: practical tools and techniques in software development
The Unicode standard version 3.0
The Unicode standard version 3.0
The Java Language Specification
The Java Language Specification
Reflections on the Object Constraint Language
«UML» '98 Selected papers from the First International Workshop on The Unified Modeling Language «UML»'98: Beyond the Notation
On Formalizing the UML Object Constraint Language OCL
ER '98 Proceedings of the 17th International Conference on Conceptual Modeling
Interpreting the Object Constraint Language
APSEC '98 Proceedings of the Fifth Asia Pacific Software Engineering Conference
Modeling Languages: Syntax, Semantics and All That Stuff, Part I: The Basic Stuff
Modeling Languages: Syntax, Semantics and All That Stuff, Part I: The Basic Stuff
Programming in Modula-2
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The Object Constraint Language (OCL) is a part of the Unified Modeling Language (UML) - an emerging standard language for object-oriented analysis and design. OCL is designed as a formal language for specifying constraints that cannot be expressed conveniently using UML's diagrammatic notation.This article describes results of a careful analysis of the syntactic structure of OCL, resulting in a number of improvements of the OCL-syntax. In particular, a new and better readable grammar describing OCL is defined. The paper enhances not only the language OCL itself, but in particular its presentation.Given the new grammar, a Java-style variant of OCL with essentially the same abstract grammar is defined, which should be more comfortable to Java-programmers.