Architecting - MDA and RUP and RUP.pdfRational Unified Process (RUP) Model-Driven Architecture (MDA)...

®

IBM Software Group

© 2004 IBM Corporation

MDA and RUP

Peter [email protected]

IBM Software Group | Rational software

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Agenda

� Models and Model-Driven Development (MDD)

� Rational Unified Process (RUP)

� Model-Driven Architecture (MDA)

� Aligning MDA with RUP

� Automating MDA

� Summary


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What is a model?

� “A complete description of a system from a particular perspective”

[RUP]


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Why do we model?

� To manage complexity

� To clearly understand different concerns

� To detect errors and omissions early in the lifecycle

� To examine the relative merits of different options

� To communicate with stakeholders

� To drive implementation

� To understand the impact of change

� To ensure that resources are deployed efficiently


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What is Model Driven Development?

Testing

RequirementsAnalysis &

DesignImplementation


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Why Model Driven Development?

� To speed up project delivery

�In the absence of heroics, it is the fastest way to get from A to B

� To improve the quality of the delivered system

�Each model can act as a “quality gate”

� To weave together multiple stakeholder views

�Stakeholders have different, yet related, concerns

� To improve team working

�Models form the basis of a “contract” between project roles

� To be more efficient

�Reusing models (and model elements) throughout the lifecycle


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Agenda





� Automating MDA

� Summary


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Rational Unified Process


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Models throughout the lifecycle


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Use Case Model


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Use Case Model

� Basic flow of the “Create Order” Use Case

1. The use case starts when the Sales Clerk receives a request to place an

Order from a Customer (who, for example, has contacted the Sales Clerk

by phone, email or post).

2. The Customer details are retrieved.

3. The Customer details, together with relevant details about each Order Item,

are added to the Order.

4. A request to place the Order is made.

5. Stock levels are checked to ensure that the Order can be fulfilled, and the

Order is placed.

6. The use case ends.


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Analysis Model


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Analysis Model


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Analysis Model


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Design Model

OrderEntry

Accounting Shipping

FulfillmentAccount

ManagementCustomer

Management


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Design Model


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Design Model


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Design Model


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Agenda





� Automating MDA

� Summary


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Model Driven Architecture (MDA)

� Model-Driven Development (MDD)

�Is a general term used by IBM and other

organizations


�Is a specific initiative of the Object Management

Group (OMG)

�Builds upon open standards (UML, MOF, CWM, …)

�Is not yet a standard – more of a philosophy

�Models aren’t necessarily visual (e.g. code)

�Other standards being driven by MDA (e.g. QVT)


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MDA Concepts – models and transformations

Code

CIM >> PIM

Transformation

PIM >> PSM

Transformation

PSM >> Code

Transformation

Computation Independent Model(CIM)

Business Analyst

Platform Independent Model(PIM)

Architect / Designer

Platform SpecificModel(PSM)

Developer / Tester

CIM >> CIM

Transformation

PIM >> PIM

Transformation

PSM >> PSM

Transformation


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Relationships between models is not one to one

� A PIM is usually described in UML

� Bridges between PSMs can be generated as well as PSMs

Platform Independent Model (PIM)

EJB(PSM)

SQL(PSM)

SQL(Code)

EJB(Code)

EJB – SQL mapping(PSM)

EJB – SQL mapping(Code)


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Agenda





� Automating MDA

� Summary


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RUP Models and MDA� RUP

�Business Use-Case Model

�Business Analysis Model

�Use-Case Model

�Analysis Model

�Data Model (logical)

�Design Model

�Data Model (physical)

� Implementation Model

�Deployment Model

� MDA

�CIM

�CIM

�CIM

�PIM

�PIM

�PIM (logical elements) / PSM

�PSM

�PSM

�PSM


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Agenda





� Automating MDA

� Summary


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Models and transformations� Model-model transformation

�E.g. Use-Case Model to Analysis Model

� Model-code transformation

�E.g. code generation, database schema generation

� Code-model transformation

�E.g. model generation from code

�E.g. visual trace

� Architected RAD


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Conceptual Integrity


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Business Analysis Model to Use Case Model


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Use Case Model to Analysis Model


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Analysis Model to Design Model


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Design Model to Implementation Model


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Design Model to Data Model


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Volvo IT – JNX Framework

Design Model

Domain Model

Implementation Model

Requirements

synchronize

Platform-specific Model

Platform-independent ModelModel

templates

Patterns

Patternstransform

extend

Patternsintegrate

validate

Code & TestBusiness

logic

RAS

Repository

Service

Reusable asset

(.ras file)

Reusable asset

(.ras file)

Reusable asset

(.ras file)

Reusable asset

(.ras file)


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MDA Information Center� http://www-306.ibm.com/software/rational/mda/


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Summary

� Visual modeling is a software development best practice

� Modeling is a cornerstone of the Rational Unified Process (RUP)

� Model-Driven Architecture (MDA) is a relevant standardisation initiative

� RUP aligns with the MDA philosophy

� MDA approaches can be automated using appropriate tooling


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Architecting - MDA and RUP and RUP.pdfRational Unified Process (RUP) Model-Driven Architecture (MDA)...

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