Introduction

Peter Dologdolog [at] cs [dot] aau [dot] dk2.2.05Intelligent Web and Information SystemsSeptember 9, 2010

Web Aplications Engineering

For this course:- is a software applications engineering for the web

platforms with specifics given by the web environment- Specifics (from the book):

- Higher accessibility of distributed information and services

- Document-centric hypertext interface- Variable technologies for data management- Variable presentation technologies and engines- Architecture complexity

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Goal of the course

To guide you through the specifics in processes, requirements, design, implementation, customization, quality evaluation, … beyond your project

To give you choices you can decide aboutTo help with choices in your semester project design

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Schedule

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This Lecture

Introduction: doneApplications (cca 30min) -> to inspire you beyond what you

selectedTechnologies overview (cca 30min) just in my words and only

now, you have the whole course on it -> Internet Technologies

Processes (30 min) -> in relation to SOE last semester

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Applications

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Types of Applications

HomepagesWith client side scriptingWith various presentation optionsInteractive presentationsWith multimedia objectsData IntensiveSocialWorkgroupInternet of things

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Homepages

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With Client Side Scripting

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With various presentation options

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Interactive Presentations

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With Multimedia Objects

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Data Intesive

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Social

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Workgroup

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Service Oriented

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Internet of Things

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The Web Engineering Scenario

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Technology Evolution

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HTTP

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HTML

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XML

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DTD

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XML Schema

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Namespaces

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FORMS and Java Script

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Server Side Scripting

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Forms and Calling Server Side

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Server Side Applications and Frameworks

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Servlets as one example of server side extension code

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Generated Page through a servlet

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Servlets: how does it work

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JSP: Java Servlets

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JSP typical content

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JSP Example

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Application Server Architecture

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Alternatives

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Web Services

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Service Oriented Architecture

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Usually for Integration of Legacy Enterprise Systems

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New Directions

RESTful web servicesUse of HTTP protocolUse of URIs to address operationsStateless web servicesState Encoded in URIData through HTTP – JSON or XMLFor example at iGoogle and used with AJAX

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Processes

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Spiral Model

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Unified Process

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30 days

24 hours

Product BacklogAs prioritized by Product Owner

Sprint Backlog

Backlog tasksexpandedby team

Potentially ShippableProduct Increment

Daily ScrumMeeting

Scrum Lifecycle (SOE last semester)

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SCRUM Practices (SOE Last Semester)Product Backlog

Sprint

Sprint Planning Meeting

Sprint Backlog

Roles - Product Owner, Scrum Master, Scrum Team

Daily Scrum Meeting

Sprint Review Meeting

Web Engineering Process from the Book

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Process on the Time Scale

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WebML Example

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WSDM Example

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OOHDM Example

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