[Wicket-user] Multlevel extension does not seem to work

Wed, 09 Nov 2005 17:08:04 -0800

Hi,

I am trying to use wicket:extend mechanism to share common functionality between pages and it seem to work only with one level of hierarchy. When I add another level, I get error (pasted below). Am I doing something incorrectly?

Here is code to reproduce the behavior:
Base.html:
<html>
    <body>
        <span wicket:id="baseLabel">base label</span>
       
        <wicket:child/>
    </body>
</html>

Sub.html:
<html>
    <body>
        <wicket:extend>
            <span wicket:id="subLabel">sub label</span>
        </wicket:extend>

        <wicket:child/>
    </body>
</html>

SubSub.html:
<html>
    <body>
        <wicket:extend>
            <p>Sub sub</p>
        </wicket:extend>
    </body>
</html>

Base.java:
package com.aspectivity.wicket.bugs;

import wicket.markup.html.WebPage;
import wicket.markup.html.basic.Label;

public class Base extends WebPage {
    public Base() {
        add(new Label("baseLabel", "This is label added by base"));
    }
}

Sub.java:
package com.aspectivity.wicket.bugs;

import wicket.markup.html.basic.Label;

public class Sub extends Base {
    public Sub() {
        add(new Label("subLabel", "This is label added by sub"));
    }
}

SubSub.java:
package com.aspectivity.wicket.bugs;

public class SubSub extends Sub {
}

With this code, I get the following exception:
wicket.markup.MarkupNotFoundException: Markup of type 'html' for component 'com.aspectivity.wicket.bugs.SubSub' not found. Enable debug messages for wicket.util.resource.Resource to get a list of all filenames tried:
[Page class = com.aspectivity.wicket.bugs.SubSub, id = 0]
    at wicket.MarkupContainer.getAssociatedMarkupStream(MarkupContainer.java:720)
    at wicket.Page.onRender(Page.java:778)
    at wicket.Component.render(Component.java:1163)
    at wicket.Page.doRender(Page.java:251)
    at wicket.protocol.http.WebRequestCycle.redirectTo(WebRequestCycle.java:276)
    at wicket.RequestCycle.respond(RequestCycle.java:934)
    at wicket.RequestCycle.request(RequestCycle.java:411)
    at wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:208)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:358)
    at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:294)
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
    at org.mortbay.http.HttpContext.handle(HttpContext.java:1807)
    at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:525)
    at org.mortbay.http.HttpContext.handle(HttpContext.java:1757)
    at org.mortbay.http.HttpServer.service(HttpServer.java:879)
    at org.mortbay.http.HttpConnection.service(HttpConnection.java:790)
    at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:961)
    at org.mortbay.http.HttpConnection.handle(HttpConnection.java:807)
    at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:218)
    at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:300)
    at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:511)
Caused by: wicket.WicketRuntimeException: Expected to find <wicket:child/> in base markup
    at wicket.markup.InheritedMarkupMerger.mergeMarkups(InheritedMarkupMerger.java:209)
    at wicket.markup.MarkupCache.checkForMarkupInheritance(MarkupCache.java:418)
    at wicket.markup.MarkupCache.loadMarkup(MarkupCache.java:225)
    at wicket.markup.MarkupCache.loadMarkupAndWatchForChanges(MarkupCache.java:300)
    at wicket.markup.MarkupCache.getMarkup(MarkupCache.java:183)
    at wicket.markup.MarkupCache.getMarkupStream(MarkupCache.java:100)
    at wicket.markup.MarkupCache.getMarkupStream(MarkupCache.java:83)
    at wicket.MarkupContainer.getAssociatedMarkupStream(MarkupContainer.java:710)
    ... 22 more

Component Tree

Component tree for [Page class = com.aspectivity.wicket.bugs.SubSub, id = 0]:

# Path Type Model Object
1    baseLabel    wicket.markup.html.basic.Label    This is label added by base   
2    subLabel    wicket.markup.html.basic.Label    This is label added by sub  

-Ramnivas




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