Training:OCL Expressions: Difference between revisions

OCL Expressions

Revision as of 05:52, 22 June 2023

The Object Constraint Language (OCL) is a declarative language for describing rules that apply to Unified Modeling Language (UML) models developed at IBM and now part of the UML standard. Initially, OCL was only a formal specification language extension to UML.^[1] OCL may now be used with any Meta-Object Facility(MOF), Object Management Group m(OMG),eta-model, including UML.^[2] The Object Constraint Language is a precise text language that provides constraint and object query expressions on any MOF model or meta-model that cannot otherwise be expressed by diagrammatic notation. OCL is a key component of the new OMG standard recommendation for transforming models, the Queries/Views/Transformations (QVT) specification.

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Part 1 OCL Common Expressions

Part 2 OCL: Operators

Part 3 OCL: Derivation Properties

The MDriven Book - See also: Certain important constructs

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-The '''Object Constraint Language (OCL)''' is a [[wikipedia:Declarative_programming|declarative language]] for describing rules that apply to [[UML School|Unified Modeling Language (UML)]] models developed at IBM and is now a part of the UML standard.
+<blockquote>The '''Object Constraint Language''' ('''OCL''') is a [[wikipedia:Declarative_programming|declarative language]] for describing rules that apply to [[wikipedia:Unified_Modeling_Language|Unified Modeling Language (UML)]] models developed at [[wikipedia:IBM|IBM]] and now part of the UML standard. Initially, OCL was only a formal specification language extension to UML.<sup>[1]</sup> OCL may now be used with any [[wikipedia:Meta-Object_Facility|Meta-Object Facility]](MOF), [[wikipedia:Object_Management_Group|Object Management Group]][[wikipedia:Metamodeling|m(OMG),eta-model]], including UML.<sup>[2]</sup> The Object Constraint Language is a precise text language that provides constraint and object query expressions on any MOF model or meta-model that cannot otherwise be expressed by diagrammatic notation. OCL is a key component of the new OMG standard recommendation for transforming models, the Queries/Views/Transformations ([[wikipedia:QVT|QVT]]) specification.</blockquote>
-* Initially, OCL was only a formal specification language extension to UML, but it may now be used with any Meta-Object Facility (MOF) and Object Management Group (OMG) meta-model, including UML.[2]
-* OCL is a precise text language that provides constraint and object query expressions on any MOF model or meta-model that cannot otherwise be expressed by diagrammatic notation. OCL is a key component of the new OMG standard recommendation for transforming models, the Queries/Views/Transformations (QVT) specification.
 ==== Learn more: ====