Wicket Live on Stage features a Wicket project that has been in production use for over a year. The application is a web application for dutch highschools for administration of students' data for funding, guidance, graduation, attendance and financial purposes. The presentation describes the road to choosing Wicket as the core framework, and includes screenshots of the live demo (which isn't captured in this presentation) of Vocus (http://www.vocuslis.nl).

1. Wicket Live on Stage
A Wicket case study

2. Agenda
• Why Wicket?
• What is Vocus?
• Wicket in Action

3. Topicus
• ASP/SAAS provider
• healthcare
• education
• finance
• insurance

4. Topicus Gifkikker

5. ket
ic
hy W
W

6. Web 2002
• Struts
• JSPs
• OJB

7. Web 2003
• Maverick
• Velocity
• Baritus
• Hibernate

8. Parnassys

9. Parnassys: searching

10. Parnassys: attendance

11. Problems with MVC
• 1 change requires N files to be modified
(for large values of N)
• high learning curve
• back button
• procedural programming
• little to no reuse
• complex UI neigh impossible

12. Web 2005
• Wicket
• Hibernate 3!
• Java 5
• Start of Vocus

13. Vocus
• Student information system
• Secondary/High school
• SaaS solution
• Fully web based

14. Functionality
• Registration
• Funding
• Results/Exams
• Student guidance
• Attendance

15. Wicket usage
• Started with 1.1
• Moved along with 1.2
• Backports from 1.3 into custom 1.2 branch
• Currently migrating to 1.3

16. DEMO

17. Student information at a glance
(data has been scrambled)

18. Entering grades from home
(data has been scrambled)

19. Wicket’s TreeTable in action
(data has been scrambled)

20. Chart 2
300000
#Requests
225000
150000
75000
0
2007-09-12 2007-09-18 2007-09-24 2007-09-30 2007-10-06 2007-10-12 2007-10-18 2007-10-24 2007-10-30 2007-11-05 2007-11-11 2007-11-17 2007-11-23 2007-11-29
>300 users

21. Keeping your server
alive
• request logger
• serialization check
• use a profiler
• pick the right GC
• run on JDK 6 (mustang)

22. function ClickZoekresultaten(url) {
if($('SRP_SearchResultsPanel').style.display=='none') {
new Ajax.Updater(
'SRP_SearchResultsPanel',
url,
{
asynchronous : true,
method : 'get',
onComplete : function() {
Effect.SlideDown('SRP_SearchResultsPanel',
{duration : 0.5});
Behaviour.apply();
}
}
);
} else {
Effect.SlideUp('SRP_SearchResultsPanel',
{duration : 0.5});
}
}

23. add(new AttributeModifier(quot;onclickquot;, true, new Model()
{
@Override
public Object getObject(Component component)
{
return quot;ClickZoekresultaten('quot; + component.urlFor(ILinkListener.INTERFACE)
+ quot;'); return false;quot;;
}
}));
public void onClick()
{
Panel panel = (Panel) getParent().get(quot;resultatenquot;);
showResultaten();
ComponentRequestTarget target = new ComponentRequestTarget(panel);
WebRequestCycle cycle = (WebRequestCycle) RequestCycle.get();
// zet de contenttype op xml om UTF-8 goed voor elkaar te krijgen
WebResponse response = (WebResponse) cycle.getResponse();
response.setContentType(quot;text/xmlquot;);
response.setLastModifiedTime(Time.START_OF_UNIX_TIME);
response.setHeader(quot;Cache-controlquot;, quot;no-cache, must-revalidatequot;);
cycle.setRequestTarget(target);
}

24. Questions?

25. BEER!