Issue 1169:  Non-normative MODL issue (boca-rtf)
Source:  (, )
Nature:  Revision
Severity: 
Summary: Summary: Section 7.1, pages 225-234 include a representation of the Boca model
 expressed in MODL.   MODL is a non-normative, proprietary language which
 has some limitations with respect to proper representation and
 transformation of BOCA meta model semantics into MOF compliant IDL.  As
 explained in the preamble of the Appendix 3, MOF has no normative form
 of expression.   As referenced in the MODL text, there are a number of
 MOF/MODL representational problems.   There are errors due to the manual
 process of going from CDL to UML to MODL to MOF.  Somewhere in these
 manual transformations, there appeared added operations (e.g.,
 GeneralModel::NameSpace::lookup),   added assertions (e.g.,
 GeneralModel::NamedElement::NameSyntax), added exceptions (e.g.,
 GeneralModel::NameSpace::Element_Not_Found),  lost references ("blind"
 associations in their place), etc.   As a consequence, the MODL does not
 reflect the BOCA meta model.
 

Resolution: 
Revised Text: 
Actions taken:
April 22, 1998: received issue
June 23, 1998: closed issue
Discussion: 

End of Annotations:=====
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From: Tom Digre <tom-d@dataaccess.com>
To: "'issues'" <issues@omg.org>
Cc: "'Boca RTF'" <boca-rtf@omg.org>
Subject: boca-rtf issue: non-normative MODL
Date: Wed, 22 Apr 1998 12:54:40 -0400

BOCA
Section 7.1, pages 225-234 include a representation of the Boca model
expressed in MODL.   MODL is a non-normative, proprietary language
which
has some limitations with respect to proper representation and
transformation of BOCA meta model semantics into MOF compliant IDL.
As
explained in the preamble of the Appendix 3, MOF has no normative form
of expression.   As referenced in the MODL text, there are a number of
MOF/MODL representational problems.   There are errors due to the
manual
process of going from CDL to UML to MODL to MOF.  Somewhere in these
manual transformations, there appeared added operations (e.g.,
GeneralModel::NameSpace::lookup),   added assertions (e.g.,
GeneralModel::NamedElement::NameSyntax), added exceptions (e.g.,
GeneralModel::NameSpace::Element_Not_Found),  lost references ("blind"
associations in their place), etc.   As a consequence, the MODL does
not
reflect the BOCA meta model.

Recommendation:  Since MODL is not normative, there is no normative
MOF
textual representation or transformation, and errors are inevitable in
the manual transformation process, recommend removal of the MODL
section
7.1 as irrelevant, unusable, and incorrect.    

Tom Digre