Introducing OAT

OAT - the OpenLink AJAX Toolkit

What is OAT?

• Full-blown JS solution
• Open-source
• Pure JS: client side only
  • can take advantage of server support
• Goal: everything you need, but not more
  • Prototype < OAT < dojo

OAT parts

• Base library
  • prototypes, events, DOM, messages
  • loader.js, cca 25kB
• Library files
  • widgets, APIs, data access
  • nearly 100 files
• Documentation
• Sample applications

Important & unique features

• OpenAjax compatible
• On-demand loading
• Data access
  • SQL, JSON, XML, RDF, …
• Widgets
• Useful applications, not just tech demos

Feature: OpenAjax conformance

• No pollution of global namespace
  • global object window.OAT
  • exceptions: $, $v
  • prototyping: Date, String, Array (not Object!)
• Integration with OpenAjax hub
  • OpenAjax.registerLibrary
  • OpenAjax.registerGlobals

Feature: on-demand loading

• Framework in many small JS files
• User-defined variable featureList
  • var featureList = ["ajax2","grid"]
• Only necessary components are downloaded
  • automatic dependency handling
• Can be performed at runtime
  • OAT.Loader.loadFeatures(features, callback)

Feature: Data access

• SQL data
  • via XML/A SOAP; scrollable cursors
• XML, JSON
  • omnipresent AJAX, JSON security
  • XPath filtering
• RDF
  • triple parser, SPARQL
• Web Services
  • WSDL/SOAP

Feature: Widgets I.

• Data visualization
  • Grid, Charts, Tree, Timeline, Graph
  • Pivot table: unique solution
    

Feature: Widgets II.

• Eye candies
  • Windows, Fisheye, Rounded corners
  • SVG, Sparklines
    

Feature: Widgets III.

• Miscellaneous
  • WebDAV Browser, <a>++
    

Feature: Applications I.

• SQL Query By Example
  • Interactive SQL query builder
  • http://demo.openlinksw.com/DAV/JS/qbe/index.html
    

Feature: Applications II.

• Database Designer
  • Draw your DB schema in browser
  • http://demo.openlinksw.com/DAV/JS/designer/index.html
    

Feature: Applications III.

• Forms Designer
  • Create a form and fill it with data
  • http://demo.openlinksw.com/DAV/JS/formdesigner/index.html
    

Feature: Applications IV.

• SPARQL QBE
  • Visual SPARQL query builder
  • http://demo.openlinksw.com/isparql/
    

Feature: Applications V.

• RDF Browser
  • Explore the RDF world!
  • http://demo.openlinksw.com/DAV/JS/rdfbrowser/index.html>
    

Feature: Applications VI.

• OAT Demo
  • "Kitchen sink" application
  • http://demo.openlinksw.com/DAV/JS/demo/index.html
    

Virtuoso - a perfect companion

• OpenLink Virtuoso complements OAT
  • but is not necessary
• XML/A data provider
  • via SOAP requests
• WebDAV host
  • save/load to DAV via OAT's DAV Browser
• RDF Sponger & proxy
  • extracts metadata from web pages

Summary

• OAT - JavaScript framework
  • yet another, but extremely powerful
• Original and usable set of features
  • data access, widgets, applications
• Web 2.0 Ready
  • Widgets and Applications that enable Mashups with or without coding
• Web 3.0 (Semantic Data Web) Ready
  • SPARQL Query Language and Protocol support via RDF Aware Widgets, Libraries, and Applications