C'A'S'E'

1
C.A.S.E.
2
CASE

• Computer Aided Software Engineering
• computer tools for helping a software engineering
• modeling tools, with code generators, simulators,
  test generators, etc

3
Tools for software engineering

• Compilers
• Editors
• Debuggers
• Configuration Management
• Test suite management
• Middleware (CORBA, EJB, MTS)

4
CASE

• Excel and Word?
• Sourceforge?

5
Integrated CASE Environment

• Provide a mechanism for sharing SE information
  among all tools in the environment
• Enable a change to one item of information to be
  tracked by related information items
• Provide version control and configuration
  management for all SE information

6
Integrated CASE Environmnet

• Allow nonsequential access to any tool
• Support the software process
• Provide a consistent look and feel
• Support communication among software engineers
• Collect both management and technical metrics

7
CASE in Industry

• Tools advertised as CASE usually focus on
  analysis and design
• Pictures
• Rational Rose
• Together (www.togethersoft.com)

8
Together

• Modeling
• UML
• Patterns
• Development
• Java/C/other
• Round trip engineering
• GUI builder

9
Together Projects

• System is made of one or more projects
• Many people can work on one project
• Project contains a directory for code and
  diagrams
• Can convert code into package diagram and class
  diagram for the project
• Can convert diagrams into code

10
Modeling

• Supports all UML diagrams
• Most support for class diagram, structure diagram
• Library of patterns
• Applying a pattern can add class, association, or
  method

11
Code Generation

• Class diagrams can generate code
• Class template describes what is included with
  each class.
• Special templates, e.g. for EJB
• Method in diagram includes code for method

12
Round Trip Engineering

• Programmers can edit program
• Together will update diagrams
• Solves problem of out of date diagrams

13
Together as an example of CASE

• Variety of tools
• Common project database
• Changes propagated from code to diagrams
• Version control
• Multiuser
• Some metrics

14
Together as an example of CASE

• Focus on pictures
• UML - general purpose modeling language
• Code generation
• Patterns - the latest thing
• Round-trip engineering, demanded by customers

15
Failure of CASE

• 1980 CASE will revolutionize software
• Problems
• no feedback
• diagrams get out of date
• slow progress without improving quality
• 2000 CASE used modestly

16
Future of CASE

• Model-driven Architecture
• http//www.omg.org/mda
• Claim models will be more reusable than code
• A vision, not yet a technology or a process
• Describe system with UML
• Generate all code from model

17
Example of Model Driven Architecture

• Wells Fargo
• Big systems, lots of legacy code, many
  technologies
• A UML model of all the business objects
• Can generate IDL for CORBA, SOAP, COM from the
  UML model

18
(No Transcript)
19
Division of labor

• Business Object Services group maintains the
  model and helps other people understand it.
• Projects usually have people from client group,
  BOS group, and backend data group.
• Model used to generate interfaces for client
  group.

20
Model-driven Architecture

• Model defines data and interfaces
• Model controls middleware
• Model does not describe all the behavior
• Use conventional programming languages
• UML not good at precise behavioral specification
• Many attempts to extend UML so it will be better
  at specifying behavior

21
More OMG standards

• Finance
• Health care
• Telecom
• E-commerce
• Transportation
• Space

22
Next time

• See http//www.projtech.com/info/smmethod.html
• http//www.projtech.com/pdfs/rdaia.pdf