Faculty of Informatics, University of Lugano School of Information, UC Berkeley

Introduction

RESTful Web Services:
Principles, Patterns, Emerging Technologies
[./]
Tutorial at WWW2010 [http://www2010.org/] (Raleigh, North Carolina)

Cesare Pautasso (Faculty of Informatics, University of Lugano)
Erik Wilde (School of Information, UC Berkeley)

April 27, 2010

Creative Commons License [http://creativecommons.org/licenses/by/3.0/]

This work is licensed under a CC
Attribution 3.0 Unported License
[http://creativecommons.org/licenses/by/3.0/]

Contents Cesare Pautasso: Introduction

Contents

Cesare Pautasso: Introduction
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(2) Abstract

This introduction presents the schedule, the tutorial presenters, and some background for the tutorial. Specifically, we briefly mention all the *OA terms that have been invented in recent years, such as SOA (Services), ROA (Resources), WOA (Web), SynOA (Syndication), and EOA (Event), and set them into context. Our main goal is to explain our notion of SOA for the purpose of this tutorial, and what we perceive as the core tasks when moving from SOA to REST.



Cesare Pautasso: Introduction
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(3) Schedule



Presenters

Outline (Presenters)

  1. Presenters [2]
  2. *OA Overload [8]
Presenters Cesare Pautasso: Introduction
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(5) Cesare Pautasso

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Presenters Cesare Pautasso: Introduction
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(6) Erik Wilde

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*OA Overload

Outline (*OA Overload)

  1. Presenters [2]
  2. *OA Overload [8]
*OA Overload Cesare Pautasso: Introduction
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(8) SOA and REST



*OA Overload Cesare Pautasso: Introduction
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(9) What is SOA?

  1. Alignment of business objectives and IT
    • can be implemented with any architecture, technology, product
    • SOA explained like this is more for business-oriented people
    • this definition is not within the realm of technical terms
  2. Technical architecture (interfaces are exposing services)
    • focus on IT and the idea of services as the main abstraction
    • still little guidance on how exactly a service is identified and exposed
    • this definition is in the right space, but often highly underspecified
  3. SOA as the high-level explanation for WS-* Web Services [http://en.wikipedia.org/wiki/Web_service]
    • this is how SOA as a buzzword started (SOA as architecture for Web Services)
    • most SOA products are focusing on this (rather narrow) view of Web Services
    • this definition has many implicit decisions built-in


*OA Overload Cesare Pautasso: Introduction
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(10) From SOA to REST



*OA Overload Cesare Pautasso: Introduction
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(11) What are Web Services?

Definition: A Web service is a software system designed to support interoperable machine-to-machine interaction over a network. It has an interface described in a machine-processable format (specifically WSDL). Other systems interact with the Web service in a manner prescribed by its description using SOAP messages, typically conveyed using HTTP with an XML serialization in conjunction with other Web-related standards.

Web Services Architecture, W3C Working Group Note, February 11, 2004 [http://www.w3.org/TR/ws-arch/#whatis]



*OA Overload Cesare Pautasso: Introduction
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(12) Resource Oriented Architecture (ROA)

RESTful Web Services

*OA Overload Cesare Pautasso: Introduction
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(13) Web Oriented Architecture (WOA)



*OA Overload Cesare Pautasso: Introduction
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(14) Syndication Oriented Architecture (SynOA)



*OA Overload Cesare Pautasso: Introduction
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(15) Event Oriented Architecture (EOA)



Cesare Pautasso: Introduction
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(16) Conclusions



Cesare Pautasso: Introduction
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(17) Schedule



April 27, 2010 RESTful Web Services:
Principles, Patterns, Emerging Technologies
[./]
Tutorial at WWW2010 [http://www2010.org/] (Raleigh, North Carolina)