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Prospettive

Prospettive. Components History. OO COM, CORBA (IDL) JVM, JavaBeans Supporto ai componenti nel Runtime: Interface programming Dynamic loading Metadata and Reflection .Net XML Web Services. Web Oggi. Base: HTML 4.01, XHTML 1.0 CSS 2.1 XML 1.1 PNG Advanced: SVG VML VRML MathML

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Prospettive

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  1. Prospettive

  2. Components History • OO • COM, CORBA (IDL) • JVM, JavaBeans • Supporto ai componenti nel Runtime: • Interface programming • Dynamic loading • Metadata and Reflection • .Net • XML Web Services

  3. Web Oggi • Base: • HTML 4.01, XHTML 1.0 • CSS 2.1 • XML 1.1 • PNG • Advanced: • SVG • VML • VRML • MathML • XSLT • SMIL • XForms

  4. Web Applications • Client Side: • Java • Javascript • DHTML, DOM • Server side: • CGI • Application servers: • JSP, ASP • XML Web Services

  5. Web Components for Application • ASP.Net • JSF, JSF Tags (supersedes JSTL?) • ASP.Net 2.0 Web Parts

  6. New Solutions • Mozilla Roadmap: support for • <canvas> vs SVG • Based on Cairo (a stateful user-level API with capabilities similar to the PDF imaging model) • Rendering on Postcript (stateless) • SVG declarative, DOM state • XUL • XAML

  7. Partiti • Mozilla • XUL, Gecko, Cairo • Apache • Struts, Cocoon • Sun • J2EE, Tomcat, JBoss • Microsoft • Web Parts • XAML, Avalon

  8. Java e Sun • EJBs have always been an exercise in configuration minutia: endless fat books on J2ee, deployment descriptors, application.xml, ejb-jar.xml, ejb refs, etcetera ad nauseum. It does not feel like the simplest thing that could possibly work.

  9. Is HTML Broken? • The HTML development starts to bog down in a sea of complexity and alphabet soup: HTML, CSS, javascript, JSP, ASP, PHP, EJB, … Maintenance costs rise, developing the application on a page-based HTML slows to a crawl. • Struts, JSF, tapestry, velocity, JSP are all Band-Aids for a broken paradigm

  10. Browser extensions • What-WG • Goal: to specify new technologies that make it possible to make much prettier and more usable interfaces with less dependence on complex scripts, less dependence on server-generated pages, and a more seamless user experience • Web Forms • Web Controls: • new input control types for dates, times, e-mail addresses, and numbers • a new client-side validation model • a way to mark input controls as required • a repetition model • control over form submission so that forms can be updated instead of causing the page to be replaced

  11. LASZLO <canvas> <simplelayout spacing="5"/> <class name="box" height="100" width="100" bgcolor="red"/> <class name="borderedbox" extends="box"> <attribute name="bordersize" value="3"/> <view bgcolor="yellow" x="${parent.bordersize}" y="${parent.bordersize}" width="${parent.width - parent.bordersize*2}" height="${parent.height - parent.bordersize*2}"/> </class> <borderedbox/> <borderedbox bordersize="6"/> <borderedbox bordersize="9"/> </canvas>

  12. Semantic Web • RDF • OWL • DAML+OIL

  13. Web Data • XPath • XQuery

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