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SWAZoo: A Smalltalk Web Application Server

Learn about SWAZoo, a Smalltalk server offering architecture insights, AIDA/Web framework, and demo downloads for dynamic web applications. Explore HTTP servers, SSL integration, and more.

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SWAZoo: A Smalltalk Web Application Server

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  1. SWAZoo - AIDA A Smalltalk Web Application Server Janko Mivsek Eranova d.o.o. Ljubljana, Slovenia On the sunny side of the Alps

  2. Contents • SWAZoo • goals • architecture • AIDA/Web • demo • architecture

  3. Internet related CS projects • Internet Client/Server framework • Smalltalk Web Application Server • SOAP • XML

  4. SWAZoo • Smalltalk Web Application ZOO :-)) • a CampSmalltalk project • Merging all Web related work together • Commanche, Hydrogen, ByteSmiths toolkit, AIDA/Web • VisualWave, VisualAge SST

  5. SWAZoo • HTTP 1.1 server • Virtual servers • Resource hierarchy • URL resolution • HTTPRequest parsing

  6. Swazoo Architecture HTTP Server Web Site

  7. Plugable Resources Site FileResource AIDA Wiki

  8. Security • SSL (Secure Socket Layer) • SSLSocketAccessor • Integration in Swazoo (comming)

  9. Swazoo live • www.signalground.com • www.reasonability.net

  10. Swazoo ports • VisualWorks 30, 5i • Dolphin • VisualAge (in progress) • SmalltalkX (in progress) • Squeak (coming soon) • Visual Smalltalk (coming soon) • Gemstone (coming soon)

  11. Swazoo info • www.sourceforge.net • latest distributions • mailing list • swazoo.org (coming soon)

  12. AIDA/Web • A Web server • Framework for dynamic web applications

  13. Where is usefull? • Internet • web sites, portals, e-shops, e-commerce, newspapers, discussion forums, … • Intranet, Extranet • Web based business apps • B2B • CRM, Document systems, Unified messaging • ...

  14. AIDA/Web demo

  15. Download it and try! • http://www.eranova.si/aida • complete source • small demo • Open source

  16. Architecture • Original design ideas • MVC for the Web • WebElements • Session management • Security • Persistent everything • Smalltalk Server Pages

  17. Original design ideas • Web of objects • … connected by object references • Web ob pages • … connected by URLl links

  18. Original design ideas • Every object should be able to represent itself as a web page • Object references should be mapped to URL references and vice-versa (automatically!)

  19. MVC on Web domain object a WebApp observee domain object

  20. MVC on Web • Multiple Views of the same object • discussions - hierarchical/cronological • Registration of web print methods for different views

  21. MVC on Web • Web forms • Input fields connected to domain object attributes with a pluggable adapter • Submit button • Action methods

  22. WebElements • Smalltalk objects representing the elements of a web page • text, url links, images, tables, input fields, … • Composite objects • nesting of web elements • reusable web components

  23. Complete path of a WebRequest

  24. Session management • Sessions used to separate users from each other • Web is stateless • Session identification • cookies • parameter in an URL • Sessions are permanent and persistent

  25. Security • Access rights • who is allowed to view or update my object? • Access rights for each view • separate right for update (form submit) • URL links to the prohibited objects are inactive • Authentication

  26. Persistent Everything • Almost all objects of AIDA/Web are persistent • requests, sessions, security, … • Gemstone or Versant ODB used • Lightweight TransactionMonitor • Caching on a AIDA/Web side • 35.000 hits/h

  27. Smalltalk Server Pages • Calls to Smalltalk from HTML static pages • Like ASP, JSP, … • <AIDA WebStatistics printCounter>

  28. Discussion Smalltalk in e-commerce world?

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