IBM Rational Software

Transcription

1 IBM Rational Software Development Conference 2008 Pushing open new DOORS: Support for next generation methodologies for capturing and analyzing requirements Phani Challa Rick Banerjee IBM Corporation

2 What challenges our tools? 2

3 New Ways of Working 3

4 The Million $ Questions Q. What is the next paradigm shift? Q. Which methodology would be the best one to design systems in the new paradigm? Q. What are the requirements on our tools to support this methodology? 4

5 The next turn on the road Pow! 5

6 is Agent Oriented Programming Pow! 6

7 Pow! Ugh! Another paradigm 7

8 Pow! What is AOP? 8

9 Pow! - Roots in AI - Abstraction at the knowledge level 9

10 Pow! - An agent is one who is authorized to act for or in the place of another - agents have their own will : autonomy - agents are able to interact with each other :social ability - agents respond to stimulus : reactivity - agents take initiative : pro-activity 10

11 Agent Example Pow! Autonomy Social Ability Reactivity Pro-activity 11

12 OOP Machine State AOP Mental State/Beliefs Pow! Procedures Methods Interaction I/O Plans Actions Communication Negotiation Social Ability 12

13 Is it all just mumbo jumbo? Need for Open Architectures Need to adapt to Continuous Change Need to evolve to work with new components Need to evolve to work with new requirements Need for Portability Need for Robust, Autonomous, Proactive systems 13

14 Is it all just mumbo jumbo? Electronic Commerce Enterprise Resource Planning Air Traffic Control Systems Computer Viruses/Worms Computer Games (Players in Quake) Trading agents in ebay Web Spiders - Google 14

15 The Million $ Questions Q. What is the next paradigm shift? - AOP Q. Which methodology would be the best one to design systems in the new paradigm? Q. What are the requirements on our tools to support this methodology? 15

16 How to build AOP systems? 16

17 The Million $ Questions Q. What is the next paradigm shift? - AOP Q. Which methodology would be the best one to design systems in the new paradigm? - TROPOS Q. What are the requirements on our tools to support this methodology? 17

18 TROPOS Pow! What is TROPOS? Why TROPOS? Case Study - Travel Portal Early Requirement Analysis Late Requirement Analysis 18

19 What is TROPOS? Pow! A brief overview Tropos = To Change (Greek) PAOLO BRESCIANI (University of Trento, Italy) 19

20 What is TROPOS? The use of agents and other AOP related notions through all phases of the methodology. The critical role of early requirements to capture not only the what and how but also the why. Allows for a more refined analysis of system dependencies Better identification of functional and non-functional requirements. 20

21 What is TROPOS? Pow! Early Requirements Late Requirements Architectural Design Detailed Design 21

22 What is TROPOS? Pow! Early Requirements Late Requirements Architectural Design Detailed Design 22

23 What is TROPOS? Pow! Concepts in TROPOS Actor Goal Plan Resource Dependency Capability 23

24 What is TROPOS? Pow! Concepts in TROPOS Actor Modeling Dependency Modeling Goal Modeling Plan Modeling Capability Modeling 24

25 The Case Study Pow! The Travel Portal 25

26 Early Requirements in TROPOS Pow! Q. What exactly happens in this phase? Q. Why?? 26

27 Early Requirements in TROPOS Q. What exactly happens in this phase? Identify Domain stakeholders Model them as social actors who depend on one another - For Goals to be achieved - Plans to be performed and - Resources to be furnished 27

28 Early Requirements in TROPOS Q. Why this phase? Formal analysis of connection between the intentions of the different stakeholders and the system-to-be. State the why, beside the what and how, of the system functionalities. Verify how the final implementation matches initial needs. 28

29 The Case Study Pow! Early Requirement Analysis 29

30 The Case Study Domain Stakeholders Customer Airlines Hotels Tour Operators 30

31 The Case Study Actor Diagram 31

32 The Case Study Goal Modeling Means-end analysis Contribution analysis AND/OR decomposition. 32

33 The Case Study Goal Modeling 33

34 The Case Study Goal Modeling 34

35 The Case Study Goal Modeling 35

36 The Case Study Goal Modeling 36

37 Late Requirements Pow! Q. What exactly happens in this phase? Q. Why?? 37

38 Late Requirements in TROPOS Q. What exactly happens in this phase? Conceptual model is extended including a new actor - system Dependencies with other actors define all the functional and non-functional requirements of the system-to-be 38

39 The Case Study Pow! Late Requirement Analysis 39

40 The Case Study Goal Modeling 40

41 The Case Study Goal Modeling 41

42 The Case Study Goal Modeling 42

43 Pow! But hey, where are the agents?? 43

44 What is TROPOS? Pow! Early Requirements Late Requirements Architectural Design Detailed Design 44

45 Architectural Design in TROPOS Q. What exactly happens in this phase? Definition of system s global architecture in terms of sub-systems (Actors) interconnected through data and control flows (Dependencies) 45

46 Architectural Design in TROPOS 46

47 What is TROPOS? Pow! Early Requirements Late Requirements Architectural Design Detailed Design 47

48 Detailed Design in TROPOS Q. What exactly happens in this phase? Specification of the agents micro level Agents goals, beliefs, and capabilities, as well as communication among agents are specified in detail 48

49 The Million $ Questions Q. What is the next paradigm shift? - AOP Q. Which methodology would be the best one to design systems in the new paradigm? - TROPOS Q. What are the requirements on our tools to support this methodology? 49

50 The Case Study Pow! Implementation in DOORS 50

51 Implementation in DOORS 51

52 Implementation in DOORS 52

53 Implementation in DOORS 53

54 Implementation in DOORS 54

55 Implementation in DOORS 55

56 Implementation in DOORS Suspicion 56

57 The Million $ Questions Q. What is the next paradigm shift? - AOP Q. Which methodology would be the best one to design systems in the new paradigm? - TROPOS Q. What are the requirements on our tools to support this methodology? 57

58 DOORS for TROPOS Traceability between Goals, Plans and Goal & Plan Decompositions Recording dependencies between Actors through Links 58

59 DOORS for TROPOS Analyzing requirements on system-to-be through traceability analysis after Late Requirements, through analysis of dependencies 59

60 TROPOS for DOORS Support for TROPOS diagrams: Symbols Links from elements of diagrams to elements of other diagrams Grammar 60

61 The Million $ Questions Q. What is the next paradigm shift? - AOP Q. Which methodology would be the best one to design systems in the new paradigm? - TROPOS Q. What are the requirements on our tools to support this methodology? Editor for diagrams 61

62 The Big Takeaways Early Requirements. With or without TROPOS. AOP abstraction at the knowledge level TROPOS AOP concepts through all phases TROPOS Visual Capture of Requirements 62

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