ESUG 2012, Ghent

1. Advanced
ESUG 2012 Ghent
Aug 30, 2012
Thursday, August 30, 12

2. Seaside 2.x
Seaside
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3. Seaside 3.x
Core Javascript
JQuery
Session
Component
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4. What is Seaside-Core
• “Seaside Meta”
• Web Framework Framework
• HTTP Abstraction
• Servlet API
• Rack
• WSGI
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5. Why Seaside-Core
• portable (dialect and server)
• battle tested
• objects, not strings
• familiar objects
• negligible overhead
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6. Seaside 3.x
Core
Component
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7. Seaside 3.x
Core
Component REST
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8. Seaside 3.x
Core
Component REST …
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9. WARequestHandler
Request
Response
RH
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10. WARequestHandler
/conferences /esug /2012
RH RH RH
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11. WARequestFilter
RH
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12. WASession 2.8
• current request
• jump to
• last continuation
• continuations
• monitor
•…
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13. WASession 3.x
• continuations
• properties
• (document handlers)
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14. WARequestContext
• request
• response
• handler stack
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15. Request Handler Stack
1 2 3
1 1 1
2 2
3
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16. WAPathConsumer
/conferences/esug/2012/…
RH RH RH
/esug/2012/… /2012/… /…
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17. WADispatcher
‘conferences’ -> aRequestHandler
‘sponsors’ -> aRequestHandler
‘…’ -> aRequestHanlder
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18. WASeverAdapter
provides template methods for converting
provides start and stop hooks
provides easy integration with ser ver manager UI
you don’t have to use it
sets up request context
XXRequest WARequest
SA RH
XXRespone WARespone
WARequestContext
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19. Frank
a micro framework inspired by Sinatra
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20. Seaside-REST
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21. Disclaimer
• REST in this context simply means “pretty URLs”
• pretty URLs for web services, not web applications
• this will feel a little weird
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22. index
<get>
^ ‘Hello World’
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23. index
<get>
<path: ‘index.html’>
^ ‘Hello World’
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24. indexHtml
<get>
<path: ‘index’>
<produces: ‘text/html’>
^ ‘<h1>Hello World</h1>’
Accept: text/html
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25. indexXml
<get>
<path: ‘index’>
<produces: ‘text/xml’>
^ ‘<hello><world/></hello>’
Accept: text/xml
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26. uploadXml
<post>
<consumes: ‘text/xml’>
…
Content-Type: text/xml
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27. uploadCsv
<post>
<consumes: ‘text/csv’>
…
Content-Type: text/csv
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28. getAllStartingAt: start limit: limit named: name
<get>
<path: ‘/{name}/_all_docs?start={start}&limit={limit}’>
...
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29. #shouldCacheRoutes
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30. WARestfulComponentFilter
count: count
<get>
<path: '/{count}'>
self startSessionWithRoot: (WACounter new
count: count greaseInteger;
yourself)
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31. Data Binding
• XML or JSON canvas
• Magritte-XML
• Magritte-JSON
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32. Dialects
• GemStone
• Pharo
• VAST
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33. Seaside 3.1
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34. Session Tracking Fully Customizable
• query fields
• cookie only
• cookie if supported, query field otherwise
• cookie for browser, IP for crawler
• SSL session id (*)
• path parameter (*)
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35. Path Parameter
• /;_s=KAAWl0x3c6KLnN6Q
• doesn’t need to be hidden form parameter
• required by some load balancers
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36. WAMain gone
• specify initial continuation
• subclass WASessionContinuation if you
used to subclass WAMain
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37. WAPluggableActionContinuation
• replace WAActionPhaseContinuation
subclasses with
WACallbackProcessingActionContinuation
subclasses
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38. JSON
• separate from JavaScript
• various subtle bugs fixed
• canvas API
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39. Streaming Redone
• on demand flushing
• continuation that flushes after rendering </head>
• better portability to other servers
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40. HTML 5
•#multipleValuesCallback:
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41. Document Handlers
• stored in session
• no longer stored alongside sessions
• _d
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42. Other News
• Nick now part of core team
• experimental Pharo 2.0 support
• walkback should open at correct place in
VW
• platforms can implement optimized HTML
escaping
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43. Help Wanted
• Morphic Control panel for Pharo 2.0
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44. Seaside Sprint
• Friday at Vooruit
• Saturday at Camp location
• (Sunday)
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45. Seaside Sprint Sponsors
• Reza Razavi
• 2Rivers
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46. Links
• https://github.com/marschall/esug-2012-presentation
• http://ss3.gemstone.com/ss/frank
• http://code.google.com/p/seaside/wiki/Seaside310Changelog
• http://book.seaside.st/book/advanced/restful
• http://code.google.com/p/seaside/wiki/SeasideRest
Thursday, August 30, 12