Help with dashboard widget

Hi,

Wonder if anyone can help with something. I am trying to write a new
dashboard widget. I've found a couple of pages on the web
(http://cruisecontrol.sourceforge.net/widgets.html and
http://www.nabble.com/Dashboard-PMD-widget...-td11127239.html), and
looked up the source of the dashboard widgets as shipped with CC. Using
these resources, I've written the following:

 

import
net.sourceforge.cruisecontrol.dashboard.widgets.AbstractXslOutputWidget;

import net.sourceforge.cruisecontrol.dashboard.widgets.Widget;

 

public class VerifyIFPDashboardWidget extends AbstractXslOutputWidget
implements Widget { 

 

      public String getDisplayName() { 

            return "Verify IFP Results"; 

      } 

 

      public String getXslPath() { 

            return "/webapps/cruisecontrol/xsl/verifyIFP.xsl"; 

      } 

 

} 

 

(instead of extending AbstractXslOutputWidget I have also tried writing
my own 'public Object getOutput(Map parameters)' method. Both give the
same result)

 

I've told CC about my new widget by adding it in dashboard-config.xml:

        <subtabs>

            <subtab
class="net.sourceforge.cruisecontrol.dashboard.widgets.ErrorsAndWarnings
MessagesWidget" />

            <subtab class="VerifyIFPDashboardWidget" />

        </subtabs>

 

I then restart CC. If I try to use dashboard with a browser, I see my
list of projects; but then when I try to click on one (to see the screen
with the tabs, and hopefully my new one), I get the following stack
trace:


HTTP ERROR: 500

argument type mismatch

RequestURI=/dashboard/tab/build/detail/projectA


Caused by:

java.lang.IllegalArgumentException: argument type mismatch
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav
a:39)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Impl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at
org.springframework.web.servlet.mvc.multiaction.MultiActionController.in
vokeExceptionHandler(MultiActionController.java:646)
        at
org.springframework.web.servlet.mvc.multiaction.MultiActionController.ha
ndleException(MultiActionController.java:616)
        at
org.springframework.web.servlet.mvc.multiaction.MultiActionController.in
vokeNamedMethod(MultiActionController.java:451)
        at
org.springframework.web.servlet.mvc.multiaction.MultiActionController.ha
ndleRequestInternal(MultiActionController.java:384)
        at
org.springframework.web.servlet.mvc.AbstractController.handleRequest(Abs
tractController.java:153)
        at
org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handl
e(SimpleControllerHandlerAdapter.java:48)
        at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherS
ervlet.java:858)
        at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherSe
rvlet.java:792)
        at
org.springframework.web.servlet.FrameworkServlet.processRequest(Framewor
kServlet.java:476)
        at
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.
java:431)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
        at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
        at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:2
16)
        at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
        at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)
        at
org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
        at
org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandler
Collection.java:206)
        at
org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.jav
a:114)
        at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
        at org.mortbay.jetty.Server.handle(Server.java:324)
        at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
        at
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConne
ction.java:829)
        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:513)
        at
org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
        at
org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
        at
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:
395)
        at
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java
:488)

Powered by Jetty:// <http://jetty.mortbay.org/> 

(The same stack trace is in the CC log file)

 

 

What have I done wrong? Any ideas?

Cheers

 

Nathan

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