MDA

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MDA Model Driven Architecture

• Olivier Riboux

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Overview

• What is MDA?
• The Challenges MDA addresses
• Developing in the MDA
• Benefits / Conclusion
• Case Study Magnet Communications Inc.
• Questions

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What is Model Driven Architecture?

• MDA is defined and developed by the OMG since
  March 2001.
• Main ideas
• Addresses the complete system development life
  cycle
• Separate specification from implementation
• Specify a system that is independent of a
  platform
• Transform a platform-independent (PIM) system
  specification into a specific platform (PSM)
• Code generation
• Applies directly to the mix
• ? Programming language ? Network
• ? Operating system ? Middleware

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The Challenges MDA addresses

• Portability
• Cross-Platform Operability
• Platform Independence
• Domain Specific
• Productivity

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System Development Lifecycle Process
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Foundational Concepts of the MDA
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Developing in the MDA

• PIM
• Platform Independent Model(PIM) represents
  business functionality and behavior without
  technology details
• PSM
• Applies a standard mapping to create or generate
  a Platform Specific Model (PSM) from the PIM
• Code Model
• Create or generate the code for PSM

Platform Independent Model
Platform Specific Model
Code Model
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Platform Independence using MDA
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THE Difference with other software modeling tools
MDA Independence between the -Application
Developers -Platform Experts -Domain Experts

• Classic Approach
• The developers must comprehend
• problem domain
• Platform features

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MDA Specifications MOF

• MDA is about expressing data and process
  precisely using formal languages.
• How do we keep up with evolving languages or
  new languages?How do we transform models from
  one language to another?
• Solution Meta Object Facility

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Benefits The CIO problem solver

• Achieve Greater Productivity in Creating
  Software
• Reduced Cost
• Reduced Development Time
• Increased ROI
• Improved Application Quality
• Rapid Inclusion of Emerging Technologies
• Increases stability and lifetime
• Reduces complexity

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References

• For more information on the subject
• OMGs MDA Website
• www.omg.org/mda
• Great articles to get introduced to MDA
• http//www.jaxmagazine.com/itr/online_artikel/psec
  om,id,548,nodeid,147.html

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Case Study Magnet Communications Inc.

• Description provider of secure, Web-based
  business banking solutions for financial
  institutions.
• Project use of J2EE as its target technology to
  develop a new system for small-business cash
  management.
• Problems
• quality of the code not optimal
• coding consisted of cut-and-paste operations in
  order to replicate the design pattern applied to
  the code

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Case Study Magnet Communications Inc.

• Solution
• hired Metanology Inc. as a supplier for UML code
  generation
• Created all the PIMs while developing small
  portion of the application (Loan Package)
• Defined a plug-in that converts CORBA IDL into a
  fully annotated UML models
• Applied the PIMs to these models to generate all
  of the infrastructure code

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Case Study Magnet Communications Inc.

• Benefits
• - the PIM and UML models generate over 90 of
  the total lines-of-code in applications where MDA
  is used
• no errors are introduced from cut and paste
  replication of the patterns

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Questions?