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Difference between revisions of "SBVR Exchange Metamodel"

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m (SBVR Serialization Metamodel moved to SBVR Exchange Metamodel: Align with naming in SBVR spec)
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Revision as of 19:03, 12 June 2008

Overview

This page describes the SBVR 1.0 CMOF metamodel that may be used to load and save XMI files (with '.xmi' extension) compliant with the SBVR 1.0 specification.

  • The SBVR CMOF model as published with the OMG specification
  • The model used for code generation is available in CVS: org.eclpse.sbvr.xmi/model/SBVR.uml

Class diagrams created from the original SBVR 1.0 metamodel specification:

General observations about the SBVR CMOF model from the specification:

  • SBVR is defined in terms of SBVR language
    • the CMOF metamodel is generated from the SBVR language
    • the CMOF model in the specification was not created or edited using a UML modeling tool
  • There is no use of composite aggregation anywhere in the model
  • All associations own both property ends and none are navigable from the end classes.

Issues

The following issues were discovered while implementing the SBVR CMOF serialization metamodel.

Issue 1: designation::signifier

Class diagram created from the original SBVR 1.0 metamodel specification:

representation::expression has multiplicity [1..1] and is thus required in all specializations. The SBVR 1.0 specification indicates that designation::signifier {subsets expression}, but the {subsets} reference is not included in the CMOF model. Without the subsets reference, the designation subclass will require values for both expression and signifier.

  • Change designation::signifier to add {subsets expression}

The specification also shows that designation::signifier has multiplicity [1..1], but it is [0..*] in the CMOF model. This expanded multiplicity is also incompatible with use of {subsets}.

  • Change designation::signifier multiplicity to [1..1]

Issue 2:

Issue 3:

Resolutions

Track the resolution of issues by OMG SBVR revision task force committee.