Business Driven SOA

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• Business Driven SOA

Edwin Schumacher Director of Product
Management edwin.schumacher_at_compuware.com
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Development strategiesBuilding dynamic,
business-driven applications faster

• Faster increase productivity dramatically
• Model-Driven Architecture (MDA) based Development
• Dynamic ability to change, agility
• Service Oriented Architecture (SOA)
• Business-driven applications close the gap
  between business and IT
• Business Process Automation (BPA)

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Faster DevelopmentThrough a Model-Driven
Architecture based approach
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Productivity Analysis Comparing MDA-based to
Code-Centric Development

• Conducted by The Middleware Company
• Compared two development paradigms
• MDA environment against a traditional
  code-centric IDE
• Two teams
• Each had 1 architect 2 developers
• Architected and produced the same J2EE
  application one using MDA, the other using a
  code-centric, enterprise-caliber IDE
• Report available on http//www.omg.org/mda/presen
  tations.htm Title MDA Productivity
  Study, June 2003

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Study ResultsThe Middleware Company

• MDA team delivered an error-free application in
  330 hours versus 507 hours with the IDE tool,
  which equates to 35 productivity increase
• One of the programmers expected that the MDA team
  would have been 10-20 faster were it not for the
  fact that this was their first project using the
  tool
• The quality of the code of an application built
  with an MDA tool is comparable if not better than
  applications that are built with traditional
  techniques

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EDS StudyDriving Business Agility with MDA-based
development

• Background
• Conducted by a SUN Certified J2EE
  Architect/Developer from EDS
• Compared two development paradigms
• MDA environment against a traditional
  code-centric IDE
• Approach taken
• Pet Store specification used
• Compared lines of handcrafted code
• Migration from EJB 1.1 to 2.0
• Report available on http//www.eds.com/thought/th
  ought_leadership_agility_model_arch.pdf

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Study ResultsEDS

• Lines of handcrafted code
• J2EE Pet Store using MDA development tool 610
• J2EE Pet Store 14,273
• On average the developer wrote only one to four
  lines of Java code manually for each 200 lines
  generated automatically
• Upgrading to EJB 2.0
• Took less than 30 minutes to upgrade. This would
  typically be a manual process, taking several
  months
• Bottom line
• Significant productivity gains achieved with MDA
  tool during application development and
  maintenance
• Clearly demonstrates how MDA protects existing
  investments

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Model-Driven Architecture based Development
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Ability to ChangeThrough a Business Driven
Service Oriented Architecture
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Business ModelStep One

• Expressed in UML
• Structure and behaviour
• Class Model and Service Model
• Develop at a high abstraction level
• Business centric
• Undistorted by technical details
• Focus on application functionality
• Enrich with business rules
• Constraints
• Expressions
• Automated reuse of model definitions and business
  rules
• Change applications rapidly in the model

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Architecture ModelStep Two
Business Model

• Automatic transformation from Business Model to
  Architecture Model
• Consistency and quality
• Logically layered components
• Presentation Model
• Data schemas, Web components etc.
• Business Logic Model
• Data schemas, key classes, entity components,
  session components etc.
• Data Model
• Relational data schema
• Tables, columns, keys etc.

Design Patterns
Architecture Model
Code Model
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Code ModelStep Three

• Automatic transformation from Architecture Model
  to Code
• Productivity, quality and consistency
• J2EE Core Patterns
• Presentation Tier
• MVC framework (Struts)
• Java Server Pages, Servlets
• Business Logic Tier
• Bean class, home/remote and primary key classes
  etc.
• According to EJB specification
• Data Access Tier
• SQL scripts for target database
• Application deployment descriptors
• For target application server

Transformation Patterns
Business Model
Technology Patterns
Architecture Model
Code Patterns
Code Model
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Service EnablementCoherent Migration to a
Service Oriented Architecture

• SOA is more than just Web services
• Integration Model
• Import WSDL, IDL, COBOL Copybooks (CICS and
  IMS/TM),Java/EJB signatures, SAP business
  objects, DBMS,etc.
• Automatic re-design to business model
  throughre-design patterns enabling
  participation of legacy applications in a SOA
• Reduce complexity through adapter approach

Business Model
Architecture Model
Code Model
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A Service Oriented ArchitectureIncreases the
ability to change - flexibility

• Web-based
• Java Server Pages

Presentation Logic
Application

• Contains business logic
• Integration layer
• Exposable as Web Service

Business Logic

• Automatically generated
• Distributed
• Manage persistency

Data Logic
Data

• Create new database
• Upload existing database

Data Storage
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Closing the Gap between Business and ITBusiness
Process Automation leveraging SOA
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The Evolution of Enterprise Application
Development
Development paradigm
Business IT alignment
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Business Process Automation The next step after
SOA

• Organisational model
• Actors and Roles
• Process model

Process
Enter Order
Business Process
Ship Order
Check Customer
Send Message

• Web-based
• Client-Server
• Wireless

Presentation Services
Application
Business Logic Services

• Contain business logic
• Manage the transaction
• Integration layer

Data Access Services

• Generated
• Distributed
• Manage data integrity

Data

• Create new database
• Upload existing database

Databases
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Business Process Management

• Process focus
• Goals-driven
• Customer orientation

task
customer
customer
Shipping
Production
Sales
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Conclusion

• Model-Driven Architecture based development (MDA)
• Focus on automating the translations from
  Business Model to Architecture to Code as they
  are the main source of errors Model Driven
  Architecture
• Service Oriented Architecture (SOA)
• Make sure Application Services relate to Business
  Operations
• Web Services are just one implementation of a SOA
• Take an evolutionary approach to SOA
  implementation
• Business Process Automation (BPA)
• A Service Oriented Architecture is the foundation
  for Business Process Automation
• Integrate BPA into your application development
  paradigm process-oriented application
  development

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