adm workshop chicago 2004

I T & S A e r o s p a c e D e f e n c e

ADM for Large Distributed Safety Critical SystemsWhy do we need ADM ?

ADM to fill the gap between tomorrow and yesterday technologies

Emmanuel FUCHS

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ADM: Architecture Driven Modernization

� Big Picture: ADM vs MDA for ATC

� Safety critical domain : ATC

� MDA vs ADM� What we want ?

� Future: MDA for safety critical systems

� Today : Closed to Software Chaos

� ADM To fill the gap between future and today� ADM process� ADM standards� ADM Tools

� Short term: code optimization

� Medium term: language translation

� Long term: architecture excavation

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Safety Critical Command and Control System

� ATC� Power� Medical� Industrial � (Trading)

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Air Traffic Control

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Air Traffic Control process

Flight Data Processing

Radar Data Processing

transmitterReceiver

RADAR

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-

Filled Fligth Plan

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Air Traffic Control process

Flight Data Processing

Radar Data Processing

transmitterReceiver

RADAR

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-

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ATC center

Flight PlanProcessingFlight Plan

Processing

SupervisoryControlSupervisory

Control

SimulatorSimulator

RecordingReplayRecording

Replay

controllerWorkingPosition


Radar Data ProcessingRadar Data

Processing

Radar FrontProcessingRadar Front

Processing

LAN

AFTN/CIDINATFM

ADJACENTFIR'S/TWR'S

MET Centres

Voice control and

communicationsVoice control

and communications

• Intercom• Priority• Public• RADIO A/G



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MDA And reverse MDA : ADM

Class

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MDA

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ADM

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Model

Code

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Class

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Client

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MDA

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Model

Code

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MDA transformation flow

PIMPlatform Independent Model

PSMPlatform Specific Model

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Transformation

Transformation

Code

Model

Model

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..

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Transformation

Transformation

DomainModel

MiddlewareModel

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..

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Transformation

Transformation

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ADM

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Model

Code

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ADM transformation flow



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Transformation

Transformation

Code

Model

Model

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..

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Transformation

Transformation

Code

Model

Model

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MDA Model Weaver

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MDA model Weaving

PPLLAATTFFOORRMM

DDOOMMAAIINN

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MDA model Weaving

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PPLLAATTFFOORRMM

DDOOMMAAIINN

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MDA model weaving

TTEECCHHNNIICCAALL

DDOOMMAAIINN

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MDA Modelling

� Domain Modelling� Very expensive and heavy work

� Require domain experts� Busy in finalising and validating current developments.

� So not 100% available.

� Not trained to object techniques.

� …

� Technical Modelling� Middleware

� Platform

� COTS

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Current Situation

� Complex Large distributed safety critical system reused and reused.

� What may happen :

� Architecture Erosion

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What We May Have :

First Instance:Sound Architecture

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What We May Have :

First Reuse

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What We May Have :

Second Reuse

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What We May Have :

Third Reuse

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What We May Have :

Fourth Reuse

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What We May Have :

N Reuse

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What We May Have :

N+1 Reuse

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What We May Have :

N+n Reuse

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What We May Have :

N+N Reuse

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What We May Have :

N+N+1 Reuse

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What We May Have :

N*m Reuse

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What We May Have :

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N*N Reuse

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What We May Have :

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What We May Have :

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MDA Implies Models !!!

� Applying MDA to Large Scale Distributed Systems implies having Domain Object Model !!!

� Where are they ?� In the code of operational and well proved existing systems.

� And in the minds of domain experts.

� We need a way to fill the gap between Legacy experts and MDA expert.

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Large Scale Distributed Systems

Ada

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OODAda

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CORBAAda

Technology Breakthrough

Today Future

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UMLAda

Technology Gap

Today Future

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CCMAda

Technology Chasm

Today FuturePast

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MDAAda

Technology abyss

Today FuturePast

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Today

Past Future

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Today

Past Future

No models

ErodedArchitecture

ObsoleteTechnologies

MDD

Models Driven Development

Last efficient technologies

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Today

PastFuture

No models

ErodedArchitecture

ObsoleteTechnologies

MDD

Models Driven Development

Last efficient technologies

ADM

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Domain Experts Training to MDA

� Domain experts learn quickly and efficiently brand new technology when they can reused them in short term to solve their current problems.

� ADM : Applies MDA to leverage legacy reuse.� MOF, UML and meta modelling can be used to managed

code.� It is easier for old technology users to start MDA at the code

level.� Then they can raise the level of abstraction by using MDA

Meta Modelling and Transformation.

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ADM: Change Management For

� Improvement: Short Term� Modifications

� Refactoring

� Restructuring � Migration: Mid Term

� Reuse

� Interoperability

� Porting

� Translation into another language� Excavation: Long Term

� Componentization

� Domain modelling

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Legacy to asset transformation

Legacy

. ... ..

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Asset

. ... ..

..ADM MDA

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ADM process

..

.. ..

.. ..

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MDA

Domain Expert

ADM

ADM with MDA MDA Expert

ADM Expert

ADM Expert

MDA Expert

Class

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Client

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ADM process: Code Model And Meta Model

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ADM

ADM Expert

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Code ModelAnd Code Meta Model

Ada

Code

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ADM process: Code Automatic Refactoring

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MDA

ADM Expert

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Code ModelAnd Code Meta Model

ADM with MDA

Ada

Code

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ADM process: Language Migration

..

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MDA

Domain Expert

ADM


ADM Expert

ADM Expert

MDA Expert

Class

Class

Client

ClassAda

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Babel Tower Syndrome

� Current Tools:

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Heteroclites Tools VS standard Tools

� Future Tools: OMG ADM� ADM task force� ADM RFP.

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MDA standard ADM

� Meta Model: MOF.� Legacy MOF meta model� Transformation rules : QVT, …� …

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Code Washing Machine

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Ada Code Cleaner

. ... ..

..

. . . .. . . . . .

.

Dirty

Ada

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Ada Code Cleaner

. ... ..

..

. . . .. . . . . .

. ..

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...

... .

.

...

... .

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..

Dirty

AdaClean

Ada

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Ada Code Cleaner

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MDA ADM

ADM with MDA

Class

Class

Client

ClassCode Code

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ADM Code cleaner process

..

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MDA

Domain Expert

ADM


ADM Expert

ADM Expert

MDA Expert

Class

Class

Client

ClassAda Ada

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Language movers

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Language movers

Today

Past

Future

AdaC++Java

ADM

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Language movers

Today

Past

Future

AdaC++Java

ADM

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Language movers

Today

Past

Future

AdaC++Java

ADM

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Language movers

Today

Past

Future

AdaC++Java

ADM

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Language movers

Today

Past

Future

AdaC++Java

ADM

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Language movers

Today

Past

Future

AdaC++Java

ADM

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Language movers

Today

Past

Future

AdaC++Java

ADM

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Language movers

Today

Past

Future

AdaC++Java

ADM

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Language movers

Today

Past

Future

AdaC++Java

ADM

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Language movers

Today

Past

Future

AdaC++Java

ADM

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ADM Code movers process

..

.. ..

.. ..

.. ..

..

MDA ADM

ADM with MDA

Class

Class

Client

ClassAda

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ADM Code movers process

..

.. ..

.. ..

.. ..

..

MDA

Domain Expert

ADM


ADM Expert

ADM Expert

MDA Expert

Class

Class

Client

ClassAda

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Architecture Erosion

N*N Reuse

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ADM: Architecture Excavator

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Back to initial architecture

First Instance:Sound Architecture

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ADM excavator VS MDA weaver

ADM Excavator MDA weaver

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MDA model Weaving

PPLLAATTFFOORRMM

DDOOMMAAIINN

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MDA model Weaving

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PPLLAATTFFOORRMM

DDOOMMAAIINN

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MDA model weaving

TTEECCHHNNIICCAALL

DDOOMMAAIINN

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ADM reverse weaving

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Code Model

TTEECCHHNNIICCAALL

DDOOMMAAIINN

ADM reverse weaving

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Code Model

ADM reverse weaving

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PPLLAATTFFOORRMM

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ADM reverse weaving

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PPLLAATTFFOORRMM

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ADM reverse weaving

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PPLLAATTFFOORRMM

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ADM reverse weaving

� ��Class

Class

Client

Class

Class

Class

Client

Class

DomainModel

TechnicalModel

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ADM architecture excavator process

..

.. ..

..

ADM

ADM with MDA

Class

Class

Client

Class

Class

Class

Client

Class

Class

Class

Client

Class

Domain Model Technical ModelADM

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Future of ADM: automatic maintenance

� Evolutionary systems

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Questions

Thank You For Your Attention

Questions are welcomeContacts :

[email protected]

adm workshop chicago 2004

Business

c e d e f e n c e adm

e r o s p

technologies emmanuel