generate xhtml output

[Russell Edens]

first off - after my first week inside the turbine source, im very
impressed. (<-blatant pandering, but ernest)

im trying to generate xhtml output and im struggling.

the problem i am having is in my velocity templates im making a call to
$page.setStyleSheet($content.getURI("css/default.css")) which call into:
    turbine.util.template.TemplatePageAttributes.setStyleSheet(String url)
    {
        data.getPage().getHead().addElement(new Link()
                .setRel("stylesheet").setType("text/css").setHref(url));
        return this;
    }

i want it to ommit new ecs.xhtml.link() instead.  so i created a derived
class that uses the ecs.xhtml classes like so:
    public class JVTemplatePageAttributes extends TemplatePageAttributes
    {
        private RunData data = null;

        public JVTemplatePageAttributes(RunData data)
        {
            super(data);
            this.data = data;
        }

        public TemplatePageAttributes setStyleSheet(String url)
        {
            data.getPage().getHead().addElement(new link()
                    .setRel("stylesheet").setType("text/css").setHref(url));
            return this;
        }
    }

so i dug and found that page is initialized in the
turbine.services.velocity.TurbineVelocityService class.  i attempted to
override this class by defining my own class the inherits from it and then
reference that in the TurbineResources.properties
file.  (i.e.,
services.TurbineVelocityService.classname=org.jvoom.turbine.services.velocit
y.JVTurbineVelocityService)  the class looks like:

    public class JVTurbineVelocityService extends TurbineVelocityService
        implements VelocityService
    {
        public Context getContext(RunData data)
        {
            Context context = super.getContext(data);
            // replace the page object with our own that handles xhtml
            context.put ( "page", new JVTemplatePageAttributes(data) );
            return context;
        }
    }

this all sounds great.  (if there is a better way to do this, please let me
know!)
the problem occurs when initializing the service i get the following:

    Horrible Exception: java.lang.ClassCastException:
org.jvoom.turbine.services.velocity.JVTurbineVelocityService
        at
org.apache.turbine.services.BaseInitableBroker.getInitableInstance(BaseInita
bleBroker.java:258)
    rethrown as org.apache.turbine.services.InstantiationException: Class
org.jvoom.turbine.services.velocity.JVTurbineVelocityService doesn't
implement Initable.
        at
org.apache.turbine.services.BaseInitableBroker.getInitableInstance(BaseInita
bleBroker.java:293)
        at
org.apache.turbine.services.BaseServiceBroker.getServiceInstance(BaseService
Broker.java:316)
    rethrown as org.apache.turbine.services.InstantiationException: Failed
to instantiate service TurbineVelocityService.

yet when i add a the following test code into JVTurbineVelocityService and
run it it runs with no class cast exceptions:

    public static void main(String args[])
    {
        try
        {
            Initable initable =
(Initable)Class.forName("org.jvoom.turbine.services.velocity.JVTurbineVeloci
tyService").newInstance();
        }catch(Exception e)
        {
            e.printStackTrace();
        }
    }

im at a loss.  (btw - yes i checked my classpath <g>)
any help would be greatly appreciated!!




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