1. The document discusses model driven development with smart use cases, domain driven design, and Tobago MDA. 2. It introduces smart use cases, domain driven design concepts, and software architecture considerations for model driven development. 3. An example is provided of generating code from a simple smart use case model and domain model using Tobago MDA.

1. MODEL DRIVEN DEVELOPMENT
With smart use cases, domain driven design and Tobago MDA

2. SANDER HOOGENDOORN
Capgemini
Principal technology officer
Chief architect Accelerated Delivery Platform (ADP)
Global agile thought leader
Other
Author books and articles
Speaker at international conferences
Microsoft Partner Advisory Council .NET
Capping IT Off Blog
Magazine columns
Editorial boards & Advisory boards
Web
www.sanderhoogendoorn.com
www.smartusecase.com
Twitter: @aahoogendoorn
LinkedIn: aahoogendoorn
INTRODUCTION TO AGILE 2
©2011 Capgemini. All Rights Reserved

3. AGENDA
Today’s topics
Smart use cases
Domain driven design
Software architecture
Model driven development
with Tobago MDA
Generating code
with Tobago MDA
Demo(s)!
INTRODUCTION TO AGILE 3
©2011 Capgemini. All Rights Reserved

4. SMART USE CASES
A YAGNI approach to requirements

5. AGILE REQUIREMENTS - APPROACH
Cloud Level Kite Level Sea Level Fish Level
B
D
A
Hierarchical E
A D D
Processes
B C F
Use Cases Smart
Project Hierarchical C
Use Cases
Scope Processes
D
Chronological
Processes
INTRODUCTION TO AGILE 5
©2011 Capgemini. All Rights Reserved

6. CLOUD LEVEL
INTRODUCTION TO AGILE 6
©2011 Capgemini. All Rights Reserved

7. KITE LEVEL
INTRODUCTION TO AGILE 7
©2011 Capgemini. All Rights Reserved

8. MODELING SMART USE CASES – SEA AND FISH LEVEL
INTRODUCTION TO AGILE 8
©2011 Capgemini. All Rights Reserved

9. SMART USE CASES
Stereotypes

10. DOMAIN DRIVEN DEVELOPMENT
A brief introduction

11. DOMAIN DRIVEN DEVELOPMENT - VOCABULARY
Entity
Object in the domain model not defined by its attributes,
but by a thread of continuity and identity
Value object
Has no conceptual identity.
Describe a characteristic of a thing
Repository
Methods for retrieving domain objects should delegate to a
specialized 'repository' object such that alternative
implementations may be easily interchanged.
Factory
Methods for creating domain objects should delegate to a
specialized 'factory' object such that alternative
implementations may be easily interchanged.
Service
Implement if an operation does not conceptually belong to
any entity
Implement these operations in services
INTRODUCTION TO AGILE 11
©2011 Capgemini. All Rights Reserved

12. DOMAIN DRIVEN DEVELOPMENT – EXTENDED VOCABULARY
Enumeration *
Restricted and limited set of possible values
Apply only when set of values never changes
Smart reference *
Generic reference entity
Restricted but unlimited list of possible
values
Apply when only reference matters, not
additional values, like in reports or drop
downs
INTRODUCTION TO AGILE 12
©2011 Capgemini. All Rights Reserved

13. ENTITY ATTRIBUTES

14. ENTITY ATTRIBUTES – TYPES OF ATTRIBUTES
Basic types
string, integer, DateTime
Including nullable wrapping
Enumerations
Genders, Categories
Value objects
No specific instances
Isbn, Postcode, Bsn
Simple references
Smart references, such as Language, County
Associations
Other entities such as Customer, Product
Within or outside aggregate
INTRODUCTION TO AGILE 14
©2011 Capgemini. All Rights Reserved

15. VALUE OBJECT – IN USE
INTRODUCTION TO AGILE 15
©2011 Capgemini. All Rights Reserved

16. SMART REFERENCE - TABLE
INTRODUCTION TO AGILE 16
©2011 Capgemini. All Rights Reserved

17. SMART REFERENCE – IN USE
INTRODUCTION TO AGILE 17
©2011 Capgemini. All Rights Reserved

18. SOFTWARE ARCHITECTURE
A true requirements for model driven development

19. Pages
Presentation UserControls
Panels
Use cases
Process Workflow
Domain objects / Entities
Domain Factories / Repositories
Enums / Value objects / Smart references
[Mapping]
Table Gateways
Data / Services Queries
[Mapping]
Outside world Database
INTRODUCTION TO AGILE 19
©2011 Capgemini. All Rights Reserved

20. MODEL DRIVEN DEVELOPMENT
With Tobago MDA

21. User interface Software Architecture
specification
1. Map your 5. Finalize your
business processes application
Existing to smart use cases
Applications Smart
use cases
Forms
Use cases
4. Generate
your code using
Tobago
MDA a text template Frameworks
Specifications engine
Domain
Domain
Model objects
Data / Service
Business
classes
models
2. Set up your Test
3. Establish
scenario’s
domain model your software
Databases
architecture(s)
INTRODUCTION TO AGILE 21
©2011 Capgemini. All Rights Reserved

22. MODEL DRIVEN DEVELOPMENT – TEMPLATE ENGINES
Characteristics
Load UML model (expressed in XMI)
Load templates (from flat files)
Combine elements from UML model with
templates to generate deliverables
Templates
Templates contains code that runs in template
engine
Templates might use a folder model
Generation process
Ability to generate all or individual UML model
elements
Which UML model elements are supported?
Generated deliverables can be code but also
any other document type
INTRODUCTION TO AGILE 22
©2011 Capgemini. All Rights Reserved

23. MODEL DRIVEN DEVELOPMENT - TEMPLATE ENGINES
Properties can
be used in
templates
Template engine
knows (part of)
the UML meta
model
INTRODUCTION TO AGILE 23
©2011 Capgemini. All Rights Reserved

24. MODEL DRIVEN DEVELOPMENT - TEMPLATES
INTRODUCTION TO AGILE 24
©2011 Capgemini. All Rights Reserved

25. GENERATE MANY THINGS E.G. TABLE CREATE SCRIPTS
INTRODUCTION TO AGILE 25
©2011 Capgemini. All Rights Reserved

26. GENERATING CODE
A quick example

27. A SIMPLE SMART USE CASE MODEL
uc Manage Customer
«search»
Select Customer
«incl ude»
«master detail»
Manage Customer
Site Administrator
(from A ctors)
«extend»
«define»
Define Contact
INTRODUCTION TO AGILE 27
©2011 Capgemini. All Rights Reserved

28. A SIMPLE DOMAIN MODEL
class Budapest.Business
«business class» «business class»
Cust omer Cont act
+ Name: string + Name: string
+ Address: string * + Email: Email [0..1]
+ Postcode: Postcode + Phone: PhoneNumber [0..1]
+ City: string + Department: Departments
+ Country: SmartRef
+ Website: Url [0..1]
«enumeration»
Depart ments
Sal es
Purchasing
Helpdesk
Management
INTRODUCTION TO AGILE 28
©2011 Capgemini. All Rights Reserved

29. USING TOBAGO MDA
INTRODUCTION TO AGILE 29
©2011 Capgemini. All Rights Reserved

30. GENERATED CODE IN ASP.NET
INTRODUCTION TO AGILE 30
©2011 Capgemini. All Rights Reserved

31. GENERATED CODE IN SILVERLIGHT
INTRODUCTION TO AGILE 31
©2011 Capgemini. All Rights Reserved

32. WWW.SMARTUSECASE.COM
www.accelerateddeliveryplatform.com

33. REFERENCES AND QUESTIONS
sander.hoogendoorn@capgemini.com
www.sanderhoogendoorn.com | www.smartusecase.com | www.accelerateddeliveryplatform.com
@aahoogendoorn