Markup As An Api
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Markup As An API, "publish once, publish anywhere". Looking for data portability.
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Markup As An Api
- 1. MAAA! Markup as an API “Publish once, publish anywhere” Jean-Jacques Halans
- 2. World Wide Web • HTML • describes documents • the links between documents
- 3. World Wide Web • Read • Print • Bookmark (tag) • Copy/paste
- 4. World Wide Web • Screen scraping • breaks easily • no meta information
- 5. World Wide Web • XML • price aggregators • product queries • WebServices, SOAP, WSDL • RPC, SOA • REST • http://flickr.com/photos/tags/penguin • http://api.flickr.com/services/rest/? method=flickr.photos.search&tags=pengiun
- 6. World Wide Web • New formats for sharing: • RSS, Atom • duplication
- 7. Web Standards • Web Standards Project (WaSP) • Web Standards Group • promotion of standards • separation of content, styling and behavior • semantic HTML
- 8. Semantic Web • Knowledge representation (CS, AI) • Resource Description Framework (RDF) • general method of modeling information • making statements about resources • triples: subject-predicate-object expressions • JJ - IsBornIn - Belgium
- 9. Semantic Web • Web Ontology Language (OWL) • greater machine interpretability of Web content • provides additional vocabulary + a formal semantics
- 10. Semantic Web • Problem • not much RDF data online yet; • up-to-date terms, ontologies missing for many application domains; • academic • time-consuming.
- 11. Semantic Web • eRDF (‘embedded’) • FOAF • RDFa (‘attributes’)
- 12. RDFa example <p xmlns:dc=quot;http://purl.org/dc/elements/1.1/quot; about=quot;http://www.example.com/books/wikinomicsquot;> In his latest book <em property=quot;dc:titlequot;>Wikinomics</em>, <span property=quot;dc:authorquot;>Don Tapscott</span> explains deep changes in technology, demographics and business. The book is due to be published in span>. property=quot;dc:datequot; content=quot;2006-10-01quot;>October 2006</ <span </p>
- 13. Semantic HTML • Correct use of • heading levels and paragraphs to introduce structure; • tables — tabular data; • blockquotes.
- 14. Rich semantics • Standardization of Microformats; • Small pieces of metadata within the markup: rich semantics; • Discovered, interpreted by machines.
- 15. More CSS • CSS Signatures <body id=”www-halans-be”> • CSS naming conventions • ‘header,’ ‘footer’, ‘navigation’
- 16. HTML5 • New tags • <section> • <header> • <footer> • <address> • ...
- 17. Structured Blogging • “giving bloggers the tools to create and syndicate structured information, such as reviews and events.” • structuredbloggin.org
- 18. HInclude • HInclude • include bits of HTML, using the browser • http://www.mnot.net/javascript/hinclude/ <html xmlns:hx=quot;http://purl.org/NET/hincludequot;> <head> <script src=quot;/lib/hinclude.jsquot; type=quot;text/javascriptquot;></script> <hx:include src=quot;/other/document/here.htmlquot;></hx:include>
- 19. Purple-Include • Purple-Include • “a client-side JavaScript library that allows you to do client-side transclusions” • URL + XPath, or fragment identifier • <hx:include src=quot;http://foo.com/purple.html#nid32quot; /> • http://blueoxen.net/c/purple/purple-include/
- 20. Discussion • Publish once, publish everywhere • Other tools? • Copyright • Security • ...