CompuwareCorporation Business Driven SOA Edwin Schumacher

CompuwareCorporation

Business Driven SOA

Edwin SchumacherDirector of Product [email protected]

CompuwareCorporation Page 2

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)


Faster DevelopmentThrough a Model-Driven Architecture based approach


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/presentations.htm

Title: ‘MDA Productivity Study, June 2003’


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


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/thought_leadership_agility_model_arch.pdf


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


Model-Driven Architecture based Development

Translate toArchitecture

Translate toCode

Automation through

Transformationpatterns

Increaseconsistency

Improvemanageability

Ensurealignment

Business Model• Business-centric • No technology details

• Standards based (UML)

Architecture Model• Implementation technology • Blueprint• J2EE/.NET

Code Model• Complete executable results • Protect generated code• Enable customization

Business changes by Business Analysts

Architecture changesby Architects

Code changesby developers

Separation ofconcerns


Ability to ChangeThrough a Business Driven Service Oriented Architecture


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


Architecture ModelStep Two

• 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.

BusinessModel

CodeModel

Architecture Model

DesignPatterns

DesignPatterns


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

TransformationPatterns

Business Model

CodeModel

Architecture Model

CodePatterns

CodePatterns

TechnologyPatternsTechnology

Patterns


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

CodeModel

Architecture Model

DesignPatterns

DesignPatterns

CodePatterns

CodePatterns

• CICS

• IMS/TM

• Java, EJB

• Web Services

• SAP

• DBMS

• Corba

• Monolithic

• MQSeries, JMS

Import

Re-DesignPatterns

Re-DesignPatterns


A Service Oriented ArchitectureIncreases the ability to change - flexibility

Data

DataDataStorageStorage

• Create new databaseCreate new database• Upload existing databaseUpload existing database

DataDataLogicLogic

• Automatically generatedAutomatically generated• DistributedDistributed• Manage persistencyManage persistency

BusinessBusinessLogicLogicA

pp

licati

on

• Contains business logicContains business logic• Integration layerIntegration layer• Exposable as Web ServiceExposable as Web Service

PresentationPresentationLogicLogic

• Web-basedWeb-based• Java Server PagesJava Server Pages


Closing the Gap between Business and IT

Business Process Automation leveraging SOA


Business Process Automation• Align application with business process• Key Performance Indicators• Service Level Agreements

Service Oriented Architecture• Ability to change – agility• Accelerate integration

Model-Driven Architecturebased Development• Improved productivity• Services by design - architecture

The Evolution of Enterprise Application Development

Dev

elop

men

t par

adig

m

Business – IT alignment


Business Process Automation The next step after SOA

Data

DatabasesDatabases• Create new databaseCreate new database• Upload existing databaseUpload existing database

DataDataAccessAccessServicesServices

• GeneratedGenerated• DistributedDistributed• Manage data integrityManage data integrity

BusinessBusinessLogicLogicServicesServicesA

pp

licati

on

• Contain business logicContain business logic• Manage the transactionManage the transaction• Integration layerIntegration layer

PresentationPresentationServicesServices

• Web-basedWeb-based• Client-ServerClient-Server• WirelessWireless

Enter Order

ShipOrderBusinessBusiness

ProcessProcess

• Organisational modelOrganisational model• Actors and RolesActors and Roles• Process modelProcess model

CheckCustomer

Send Message

Pro

cess


Business Process Management

Sal

es

Pro

du

ctio

n

Sh

ipp

ing

task task task

cu

sto

me

r

cu

sto

me

r

• Process focus• Goals-driven• Customer orientation• Monitor performance indicators• Tuning by workflow & business rules

Continuous Monitoring & Tuning

Change


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

CompuwareCorporation Business Driven SOA Edwin Schumacher

Documents

business model step

service model

code model step

modeldriven architecture

architecture model consistency

architecture model step

business agility

code productivity