oasis ebusiness service oriented architecture

2004 Adobe Systems Incorporated. All Rights Reserved.bc

eBusiness Service Oriented Architecture

“not your grandfathers eBusiness architecture”

Duane Nickull

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2004 Adobe Systems Incorporated. All Rights Reserved. 2081904 22:50

What is Architecture and SOA?Expressing Architectureeb SOA - Introduction - ViewsArchitectural Patterns

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SOA – a way of architecture

Service Oriented Architecture – generally for software. Begs the question “What is Software Architecture?” No single answer. Closest definition:

“A software architecture for a system is the structure or

structures of the system, which consist of elements and

their externally visible properties, and the relationships

among them” 1

[1] “Documenting Software Architectures”, Addison Wesley, Clements et al, pp xxv, ISBN 0201703726

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What is Service Oriented Architecture (SOA)?

SOA is an Architectural Paradigm for software systems. Marketing Pitch: SOA is a higher generalization of both

ebXML and Web Services. Roots in Object Oriented (OO) programming

methodology. Components in a state of readiness - may be “called” or

“invoked”. Modern SOA based on internet (communications) and

XML (data format). Event based in nature.

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Architecture Reference Model for eb SOA

Business Requirements

PatternsMetamodel

Provides requirements

for

Basic SOAPatterns

elaborated as

provides meta model for

Electronic Business Patterns

Specialized Patterns (Idioms)

Core Architecture

Specification Document

Catalogue of Patterns

DescriptionsViews

Reference modelFor architectureArchitecture

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Architectural Patterns

Developed by Christopher Alexander -> house building. Recognizes recurring patterns and documents them. Important Architectural Description Language (ADL). Not tied to any:

specific data type programming philosophy or paradigm programming language methodology

“As an element in the world, each pattern is a relationship Between a certain context, a certain system of forces

which occur repeatedly in that context, and a certain spatial configuration which allows these forces to resolve themselves.”

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eb SOA – Metamodel for Architectural Patterns

Speaks to Business Users

Speaks to Implementers

Level of Technical Detail

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eb SOA Technical Specifications

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Why is eBusiness SOA needed?

?

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Why is eBusiness SOA needed?

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What eb SOA is

A set of blueprints and architectural patterns declaring the components and relationships between them necessary to facilitate electronic business on a global basis.

A reconciliation/mapping of how technology may be employed to facilitate the requirements of electronic business.

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What eb SOA is not:

ebXML Web Services Constraints on either Implementable by itself Complete (Catalog of Patterns may be added to

indefinitely) Favorable to any specific vendor Programming language or platform specific

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eb SOA Conceptual View

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eb SOA - Functional Service View

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eb SOA – Logical Data Model View

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Catalog of Patterns Not complete

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Basic Service with Input Validation Pattern (Static)

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Basic Service with Input Validation Pattern (Dynamic)

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Serial Service Pattern

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Parallel Service Pattern

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Summary

Generalized superset of Web Services, ebXML, UN/CEFACT architectures

Work underway – 60+ participant companies/individuals Stable Architectural Reference Model Will not duplicate work of WS-I; will rely on WS-I for

input and implementation constraints.

References: http://www.oasis-open.org/committees/comments/form.php?wg_abb

rev=ebsoa

http://www.w3c.org http://www.ws-i.org http://www.ebxml.org http://www.oasis-open.org

oasis ebusiness service oriented architecture

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