1. Tools for ODP – an MDA approach
D.H.Akehurst

2. Overview OMG standards and tools Metamodelling Transformations
An approach to Language Specification
Tools from such specifications
Language specification for ODP viewpoints
Inter-viewpoint correspondences
Summary

3. OMG standards and tools
The technologies standardised by the OMG have significantly more take up than the ISO/ITU RM-ODP standard!
YES / NO
Why is this ?
Better Standards ?
OMG Marketing ?
Easier Concepts ?
Metamodelling ?
Tool Support ?

4. Use OMG techniques for ODP
metamodel the viewpoint concepts
define example languages/concrete syntax
more than one!
give example specifications
define mappings/transformations between syntax and viewpoint concepts
helps reduce ambiguity
may increase understanding of how to use the syntax
helps with generating tools that conform to the standard

5. Metamodelling Creating a Class Diagram !
Modelling the concepts of a language
Instances of the model are expressions or sentences written using the language modelled.
destination
State
incomming
name : String
Transition
source
outgoing
guard : Expr
event : Expr
action : Expr

6. Transformations
Specification of a relationship between one model and another.
A number of variations
text based, graphical based, uni/bi-directional, relation-based, grammar-based.
OMG QVT standard
Transformations, Relations, Mappings A B R
domainType
rangeType
expression

7. An approach to Language SpecificationVP
Concepts
Concrete Syntax
(or specific language)
Transformation

8. Tools from such specifications
Metamodels -> Repositories
KMF, EMF, etc
Transformations -> Implementations
Starting to arrive
ATL, YATL, QVT approaches, etc
Metamodels -> Concrete Syntax Editors
still to come
can be hand coded
(KMF example)
Domain specific modelling tools will bring this.

9. Multiple Languages Z
Bespoke CS
ODP VP
Concepts
UML
LOTOS

10. Language specification for ODP viewpoints
Should we define bespoke languages for the ODP viewpoints ?
YES / NO
Metamodelling and Transformations gives an approach.
Is it too prescriptive?
Discuss other approaches?
Facilitates easy generation of tools from the specifications!

11. Inter-Viewpoint Correspondences
An important part of an ODP spec
How do we specify them ?
Can define some on viewpoint metamodels
need system specification before doing much
Need a language to define them
Is a Transformation language appropriate ?
Need some examples

12. Summary Produce Viewpoint Metamodels
Produce One or more Concrete Syntax specs for each viewpoint
Use Transformations to define CS to VpMm spec
Generate prototype tools from specs to encourage adoption and use of ODP.
Look at use of transformations specs in relation to Inter-viewpoint correspondences.