Pattern oriented architectures for e business systems
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Pattern-Oriented Architectures for E-business Systems. C0MP 9117 Software Architecture. 24 th August 2004. Haryanto, David (z3139532) Nyo, Yupar (z3103328) Wang, Xiaowen (z3089932). Agenda. Introduction

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Pattern oriented architectures for e business systems

Pattern-Oriented Architectures for E-business Systems

C0MP 9117 Software Architecture

24th August 2004

Haryanto, David (z3139532)

Nyo, Yupar (z3103328)

Wang, Xiaowen (z3089932)


Agenda

Agenda

  • Introduction

  • Pattern-Oriented Architecture in e-business domain – the need, challenges and transition.

  • Existing Patterns (IBM, MVC, etc).

  • Case Studies (FutureStep Electronics, Retailers’ Mega Exchange, Artimus).

  • Benefits

  • Future

  • Conclusion

  • References

  • Q & A


The beginning of patterns ref 4 7

The Beginning of Patterns [Ref 4, 7]

  • The use of patterns originated in the field of architecture (for buildings, towns design, etc) during late 1970.

  • Moved into Software Engineering field in the early 1990s as a way to describe solutions to recurring problems encountered in architectural design.


Pattern oriented software architecture ref 4 8

Pattern-Oriented Software Architecture [Ref 4, 8]

  • Proven and repeatable (reusable) architectures, designs.

  • Address a recurring problem that arises in specific design situations.

  • Observed NOT invented.

  • Document/Capture existing, well-proven design experience and solutions.

  • Support the construction of software with defined properties.

  • Identify and specify abstractions.

  • Help to build and manage complex, heterogeneous software.

  • Patterns are a means of documenting software architectures.

  • Properties of POSA.


Challenges problems of e business applications ref 11

Challenges/ Problems of e-business applications [Ref 11]

  • Going beyond traditional enterprise systems

  • Security

  • Performance

  • Availability

  • A need to integrate with existing legacy applications

  • Increased Complexity

  • No room for error

  • Interpretability

  • Time Constraint


The need for pattern oriented architecture in e business ref 8

The Need for Pattern-Oriented Architecture in E-business [Ref 8]

These challenges create needs for Pattern-Oriented Architecture in e-business domain, as POSA’s properties could facilitate them.

  • Recurring problems and similar requirements.

  • Higher degree of integration.

    Especially with existing legacy systems for payment, inventory, etc.

  • Quality and Complexity.

  • Need for speed.

    Crucial! If a system is delivered significantly faster, the better it is for the business, increasing competitive edge.

  • Reuse of patterns can help the workload, reduce the complexity and enhance the quality. It thus fastens the development.


The need for pattern oriented architecture in e business 2

The Need for Pattern-Oriented Architecture in E-business 2

  • E-business systems have to hold water from day one.[Ref 8]

    No room for error with systems that face into the external world. Simply cannot be tolerated. Example : Downtime, Consequence of error for an online mall.

  • Shortage of skills

    Growing Area

  • The need for experiences

    A need for knowledge base that would help architects and designers with limited skills or experiences. Patterns capture the experts’ knowledge and provide proven solutions.

  • Changing technology


Implications and transitions of e business applications designs and architectures

Implications and Transitions of e-business applications’ designs and architectures

[Ref 9]


Pattern oriented architecture and ebusiness

Pattern-Oriented Architecture and ebusiness

  • “One of the major reasons that e-business systems fail is due to problems with the underlying technical architecture.” – McGrath, Vice President, UK Services, Princeton Softtech. [Ref 6]

  • Solution – Reuse the proven architecture, Pattern-Oriented Architecture


Existing patterns

Existing Patterns

  • IBM’s Architecture Patterns for e-business [Ref 8]

  • MVC (Model View Controller Pattern). [Ref 12]

  • Perspective Pattern – Integrate middleware with business models. From Princeton Softech, Subsidiary of Computer Horizon Corp. [Ref 6]

  • Dublo Pattern – To reuse elements of legacy system within multi-tier architectures. From the University of Oldenburg, Germany. [Ref 13]

  • BizArk – A reusable e-business architecture based on pattern-oriented technology. Encompasses main building blocks like CRM, ERP. [Ref 1]

  • And many more….


Mvc pattern of e business application

MVC Pattern of e-business application

[Ref 9]


Ibm s patterns for e business

IBM’s Patterns for E-business

[Ref 8]


Today s e business solutions ref 9

Today’s e-business solutions [Ref 9]


Ibm s patterns for e business business patterns

IBM’s Patterns for E-business : Business Patterns

[Ref 8]


Ibm s patterns for e business integration patterns

IBM’s Patterns for E-business : Integration Patterns

[Ref 8]


Ibm s patterns for e business composite patterns

IBM’s Patterns for E-business : Composite Patterns

[Ref 8]


Ibm s patterns for e business application patterns

IBM’s Patterns for E-business : Application Patterns

  • Application patterns – conceptual layouts that describe how the application components and data within a business solution interact.

  • Select the application pattern that fits best, based on the key business and IT drivers.

[Ref 8]


Ibm s patterns for e business runtime patterns

IBM’s Patterns for E-business : Runtime Patterns

  • Runtime patterns – used to define the logical middleware structure supporting an Application pattern.

  • Select the best-fitting Runtime pattern based on non-functional requirements (for example, availability, performance, security and scalability).

  • Each Application pattern requires one or more Runtime patterns.

[Ref 8]


Ibm s patterns for e business the foundation of the architecture

IBM’s Patterns for E-business The Foundation of the Architecture

[Ref 8]


Case study i future step electronics customer service system online

Case Study I- Future Step Electronics (Customer Service System Online)

  • [Ref 9]


Case study i future step electronics 2 ref 9

Case Study I- Future Step Electronics 2 [Ref 9]


Case study i future step electronics 3 ref 9

Case Study I- Future Step Electronics 3 [Ref 9]


Case study ii retailers mega exchange ref 8

Case Study II – Retailers’ Mega Exchange[Ref 8]


Case study ii retailers mega exchange 2 ref 8

Case Study II – Retailers’ Mega Exchange 2[Ref 8]


Case study ii retailers mega exchange 3 ref 8

Case Study II – Retailers’ Mega Exchange 3[Ref 8]


Case study iii artimus a web based news poster http sourceforge net struts

Case Study III - ArtimusA web-based news poster (http://sourceforge.net/struts)

  • Implement MVC and Layer pattern [Ref 4].

  • Benefit of MVC and Layer pattern.

  • Flexibility to add new component (Lucene search engine component).

Database

Presentation

Layer

Control

Layer

Business

Layer

Integration

Layer

Resource

Layer(JDBC)

Lucene

Search Engine

  • [Ref 4]


Benefits ref 7 8

Benefits [Ref 7, 8]

  • Reusability

  • Greater productivity

  • Enable to use existing skills and proven solutions/architectures

  • Capture the specific knowledge of the most skilled architects within an organization.

  • Retain business and technology knowledge from IT staff that would otherwise disappear once a skilled member leaves the organization

  • Rapid implementation, faster approach.

  • More predictability than those produced by incremental approach.


Benefits 2

Benefits 2

  • Mass customization

  • More cost effective

  • Focus on “what to build” rather than “how to build it”.

  • High quality e-business applications in less time.

  • Address non-functional properties. (E.g. Broker Architecture address interoperability. [Ref 4, pg. 407])

  • Easing workload.

  • Achieve all these without burning out a reduced workforce.


Growing areas future of patterns and e business applications

Growing Areas/Future of Patterns and e-business applications

  • E-business oriented pattern language – a set of patterns that allow the composition and arrangement of prefabricated patterns and components to build e-business applications.

  • Support and training for finding and selecting appropriate patterns.

  • Evaluations and improvements of POSA in e-business domain.

  • To further the use and development of Pattern-Oriented Architecture in e-business domain.


Conclusion

Conclusion

  • No longer “build as you go”.

  • No longer a choice between “buy or build”.

  • Build, buy, rent, connect or any combination. [Ref 8]

  • Do more with little in tough economic conditions. Reusability.

  • Craftsmanship to Industrialization by learning to customize, reuse, and follow the patterns to produce similar but distinct applications.

  • That’s what Pattern-Oriented Architecture offers.


References

References

  • A. Touir, H. Mathkour, T. Al-Naeem, BizArk : A Reusable E-business Architecture based on Pattern-Oriented Technology, Computer Systems and Applications, 2003.

  • D. Manolescu, A. Kunzle, Several Patterns for e-Business Applicaiton,2001.

  • D. Bohinc, Patterns in Software Architecture, Synergy International Limited, 2003.

  • F. Buschmann, R. Meunier, H. Rohnert, P. Sommerlad, M. Stal, Pattern-Oriented Software Architecture : A System of Patterns, John Wiley and Sons, 2001.

  • G. Vasudeva, Patterns for e-business : Leveraging Architectural Patterns in Defining Enterprise Architecture and Solution Architecture , IBM, 2003.

  • R. McGrath, R. Sparks, PRINCETON SOFTECH:Princeton Softech enables fast, high quality ebusiness development, M2 Presswire, Coventry, March 15 2000, pg. 1.

  • T. Blankers, Combining models and patterns: delivering on the promise of increased IT productivity, Java Developer’s Journal, July 2003 v8 i7 pS1(4).


References 2

References 2

  • J. Adams, S. Koushik, G. Vasudeva, G. Galambos, Patterns for e-business- A Strategy for Reuse, IBM Press, August 2001.

  • J. Adams, S. Koushik, G. Vasudeva, G. Galambos, Patterns for e-business- An Executive Overview, IBM, August 2001.

  • J. Adams, Patterns for e-business in Practice, IBM, November,2001.

  • M. Butler, Patterns for e-business – continued evolution, IBM, Butler Direct Limited, July 2001.

  • P. Gopalan, IBM ebusiness : Technology, Solution and Design Overview, Chapter 2, “E- business concepts and technologies”, IBM, 2003.

  • W. Hasselbring, R. .Reussner, The Dublo Architecture Pattern for Smooth Migration of Business Information Systems : An Experience Report, Proceedings of the 26th International Conference on Software Engineering (ICSE ’04), 0270-5257,2004.


Questions and answers

Questions and Answers

Any Question?

THANK YOU.


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