When developing a web application the traditional way is to develop the application from scratch using a general purpose language such as PHP, Grails, Java/JSP, etc. This presentation will show that a second generation wiki (examples based on XWiki: http://xwiki.org) can be used as a web development platform to develop applications on top of it, providing much if not all the needed infrastructure scaffolding. The advantages are similar to those of using an application sever. However whereas an application server offers technical services only, a wiki platform offers higher level services such as content management, rendering, storage, WYSIWYGeditor, user management, and a lot more. Not only are these services offered, you can develop using them in your traditional IDE or in the runtime, directly in wiki pages. This allows developing web applications extremely quickly with a fast turnaround time, which is perfect for adhoc web application development.

1. XWiki
A collaborative development platform runtime based
on the wiki paradigm
Copyright (c) Vincent Massol - 2011
September 2011

2. Agenda
• What is XWiki?
• Development Capabilities
• Why use XWiki?
• QA
Copyright (c) Vincent Massol - 2011

3. What is XWiki?
Copyright (c) Vincent Massol - 2011

4. Is it a first gen Wiki?
Copyright (c) Vincent Massol - 2011

5. Is it a first gen Wiki?
Not only!
Copyright (c) Vincent Massol - 2011

6. Is it an Advanced Wiki?
Copyright (c) Vincent Massol - 2011

7. Is it an Advanced Wiki?
Not only!
Copyright (c) Vincent Massol - 2011

8. It’s a dev platform!
... and a lot more... Copyright (c) Vincent Massol - 2011

9. It’s a dev platform!
... and a lot more... Copyright (c) Vincent Massol - 2011

10. It’s a dev platform!
... and a lot more... Copyright (c) Vincent Massol - 2011

11. It’s a dev platform!
... and a lot more... Copyright (c) Vincent Massol - 2011

12. It’s a dev platform!
... and a lot more... Copyright (c) Vincent Massol - 2011

13. It’s a dev platform!
... and a lot more... Copyright (c) Vincent Massol - 2011

14. It’s a dev platform!
... and a lot more... Copyright (c) Vincent Massol - 2011

15. It’s a dev platform!
... and a lot more... Copyright (c) Vincent Massol - 2011

16. It’s a dev platform!
... and a lot more... Copyright (c) Vincent Massol - 2011

17. It’s a dev platform!
... and a lot more... Copyright (c) Vincent Massol - 2011

18. It’s a dev platform!
... and a lot more... Copyright (c) Vincent Massol - 2011

19. It’s a dev platform!
... and a lot more... Copyright (c) Vincent Massol - 2011

20. It’s a dev platform!
... and a lot more... Copyright (c) Vincent Massol - 2011

21. It’s a dev platform!
... and a lot more... Copyright (c) Vincent Massol - 2011

22. It’s a dev platform!
... and a lot more... Copyright (c) Vincent Massol - 2011

23. It’s a dev platform!
... and a lot more... Copyright (c) Vincent Massol - 2011

24. It’s a dev platform!
... and a lot more... Copyright (c) Vincent Massol - 2011

25. XWiki Platform
... for developing (collaborative) web applications
Copyright (c) Vincent Massol - 2011

26. Multiple Usages
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27. Long tail of Apps
Excel of the
Web
Copyright (c) Vincent Massol - 2011

28. Development
Capabilities
Copyright (c) Vincent Massol - 2011

29. Scripting in Pages (1/2)
Demo
{{groovy}}
@Grab(group='org.codehaus.groovy.modules.http-builder',
module='http-builder', version='0.5.1')
import groovyx.net.http.*
def http = new HTTPBuilder( 'http://nexus.xwiki.org/nexus/' )
def resp = http.get( path: 'service/local/repositories')
println "|=Name|=Type|=Location"
resp.data."repositories-item".each() {
println "|${it.name}|${it.repoType}|${it. contentResourceURI}"
}
{{/groovy}}
Copyright (c) Vincent Massol - 2011

30. Scripting in Pages (2/2)
Demo
{{velocity}}
#set ($xwql = "where doc.content like '%welcome%'")
#foreach ($item in $services.query.xwql($xwql).execute())
#if ($request.confirm == "1")
#set ($itemDoc = $xwiki.getDocument($item))
$itemDoc.setContent($itemDoc.getContent().replaceAll(
"welcome", "bienvenue"))
$itemDoc.save("Replaced bienvenue")
* [[$item>>$item]] replaced!
#else
* [[$item>>$item]]
#end
#end
[[Replace "welcome" by "bienvenue">>?confirm=1]]
{{/velocity}}
Copyright (c) Vincent Massol - 2011

31. Adding MetaData
• Ability to associate arbitrary Demo
data to any wiki page
• Enable structure in the wiki
• Enable Application development
• Future: Application Within Minutes
Copyright (c) Vincent Massol - 2011

32. Wiki Macros
Demo
Copyright (c) Vincent Massol - 2011

33. Skinning & Theming
Demo
Copyright (c) Vincent Massol - 2011

34. Components Demo
@ComponentRole
public interface Macro
{
List<Block> execute();
}
@Component
@Named("message")
@Singleton
public class MessageMacro implements Macro
{
@Inject
private Execution execution;
@Inject
@Named("box")
private Macro boxMacro;
public List<Block> execute()
{
...
}
}
META-INF/components.txt
org.xwiki.rendering.internal.macro.message.MessageMacro
Copyright (c) Vincent Massol - 2011

35. extensions.xwiki.org
Copyright (c) Vincent Massol - 2011

36. Why use XWiki?
Copyright (c) Vincent Massol - 2011

37. Pros (1/2)
• Iterative, Need-based development
• Continuous Delivery
• Online immediately (no deployment
needed)
• Works from day one, immediate feedbacks
Copyright (c) Vincent Massol - 2011

38. Pros (2/2)
• Work collaboratively on creating
applications
• Designers can style while devs create
logic
• Open source
• Strong and meritocratic community
Copyright (c) Vincent Massol - 2011

39. Cons
• Save code in SCM
• ... but SVN Application
• Low integration with existing dev tools
• ... but XEclipse
• ... but WebDAV
• Not an official standard
• Higher “risk”, less trained devs, etc
Copyright (c) Vincent Massol - 2011

40. Q&A
Me
Copyright (c) Vincent Massol - 2011

41. Vincent Massol
vincent@xwiki.com
skype: vmassol
http://about.me/vmassol
http://xwiki.org
http://xwiki.com
Copyright (c) Vincent Massol - 2011