1. Managing variability in
software applications

2. Managing variability in software applications
About me
 Stephan Hochdörfer, bitExpert AG
 Department Manager Research Labs
 S.Hochdoerfer@bitExpert.de
 @shochdoerfer

3. Managing variability in software applications
One customer, optimized solution

4. Managing variability in software applications
Developer vs. Businessman

5. Managing variability in software applications
Different requirements

6. Managing variability in software applications
Different requirements: intensive workload

7. Managing variability in software applications
Different requirements: Performance

8. Managing variability in software applications
Where will this lead to?

9. Managing variability in software applications
Maintanance nightmare!

10. Managing variability in software applications
Standardize you should!

11. Managing variability in software applications
Application framework?

12. Managing variability in software applications
Plugin based approach?

13. Managing variability in software applications
Configuration chaos?

14. Managing variability in software applications
No automation?

15. Managing variability in software applications
Generalize you should!

16. Managing variability in software applications
Generative Programming
Dealing with software system
families, reusable
implementation components
and configuration knowledge.

17. Managing variability in software applications
Generative Programming: The workflow
Generator
Generator

18. Managing variability in software applications
Generative Programming: The workflow
Configuration
Configuration
(DSL)
(DSL)
Generator
Generator

19. Managing variability in software applications
Generative Programming: The workflow
Configuration
Configuration
(DSL)
(DSL)
Implementation-
Implementation-
components
Generator
Generator
components

20. Managing variability in software applications
Generative Programming: The workflow
Configuration
Configuration
(DSL)
(DSL)
1..n
Implementation-
Implementation-
components
Generator
Generator Product
components Product

21. Managing variability in software applications
Generative Programming: The workflow
Configuration
Configuration
(DSL)
(DSL)
Implementation-
Implementation-
components
Generator
Generator Customer 11
components Customer

22. Managing variability in software applications
Generative Programming: The workflow
Configuration
Configuration
(DSL)
(DSL)
Customer 22
Customer
Implementation-
Implementation-
components
Generator
Generator Customer 11
components Customer

23. Managing variability in software applications
Focus on the (software system) family!

24. Managing variability in software applications
Software System Family
Set of applications with similar
properties as well as special
properties for each individual
member.

25. Managing variability in software applications
Phase 1: Domain analysis

26. Managing variability in software applications
Listen to the customers

27. Managing variability in software applications
Talk to domain experts

28. Managing variability in software applications
Do the requirements make sense?

29. Managing variability in software applications
Does it belong to the family?

30. Managing variability in software applications
Does it belong to the family?

31. Managing variability in software applications
Does it belong to the family?

32. Managing variability in software applications
Does it belong to the family? Maybe...

33. Managing variability in software applications
Does it belong to the family? No!

34. Managing variability in software applications
Does it belong to the family? No!

35. Managing variability in software applications
Phase 2: Domain design

36. Managing variability in software applications
Feature Modelling

37. Managing variability in software applications
Phase 3: Domain implementation

38. Managing variability in software applications
Implementation components

39. Managing variability in software applications
Configuration Knowledge

40. Managing variability in software applications
Generative Programming
Generator
Domain Engineering
Domain-
analysis
Domain-
design
Domain-
implementation

41. Managing variability in software applications
Generative Programming
Generator Product
Domain Engineering App. Engineering
New
requirements
Domain- Requirements
analysis analysis
Domain- Product
design configuration
Components,
Domain- DSL, Testing and
implementation Generators,
Infrastructure
integration

42. Managing variability in software applications
Technology projection

43. Managing variability in software applications
Implement the generator...

44. Managing variability in software applications
Standardize you should!

45. Managing variability in software applications
Software generator framework

46. Managing variability in software applications
Generative Programming: The goal
Increasing the productivity,
quality, and time-to-market.

47. Managing variability in software applications
Generative Programming: The goal
Create an optimized application
on demand!

48. Managing variability in software applications
Generative Programming: The goal
Automate the assembling of the
components!

49. Managing variability in software applications
Generative Programming: Bonus points

50. Managing variability in software applications
Generative Programming: Bonus points
Less error-prone, due to the
automation.

51. Managing variability in software applications
Generative Programming: Bonus points
Reduce application complexity.

52. Managing variability in software applications
Generative Programming: Bonus points
Just one code repository:
The software generator

53. Managing variability in software applications
Generative Programming: Bonus points
Reduce maintenance support.

54. Managing variability in software applications
Generative Programming: Bonus points
Implementation
Feature
component

55. Managing variability in software applications
Generative Programming: Bonus points
Feature Customer

56. Managing variability in software applications
Generative Programming: Bonus points
Customer
Feature
Implementation
component

57. Managing variability in software applications
Generative Programming: The book

58. Managing variability in software applications
Curious for more?
http://replicatorframework.org

59. Thank you!

60. Flickr Credits
http://www.flickr.com/photos/andresrueda/3452940751/
http://www.flickr.com/photos/andresrueda/3455410635/