As an addition:
also pointing out what type of errors are likely to cause these errors would
help.
I know that mixing injection with components can give loader constraints,
which is why i created an interface for SuperPage. Moreover, I can mimagine
that cyclic references would cause errors as well. Are there any others that
I should track in my code?
Thanks again,
Geert-Jan
Britske wrote:
>
> I'm going slightly insane on this one..
> that's because everything worked fine, and after some slight modifications
> (none that could cause such errors I believe) I can't backtrack anymore
> where things went wrong.
>
> The error I'm getting is this:
>
> Could not convert 'page.quickNavigation' into a component parameter
> binding: java.lang.LinkageError: Class
> com/wrappt/aroer/base/AbstractNavigationContainer violates loader
> constraints.
> for full stack-trace see entirely below.
>
> location
> classpath:com/wrappt/aroer/components/BaseLayout.tml, line 122, column
> 77
> 117 <div class="h plain">
> 118 <h2>Verfijn de resultaten</h2>
> 119 </div>
> 120 <div class="c">
> 121 <!-- <t:quickForm t:id="quickForm"/>-->
> 122 <t:delegate t:id="quickFormDelegate"
> t:to="page.quickNavigation"/>
> <-- here it happens
> 123 </div>
> 124 <div class="f"> </div>
> 125 </div>
> 126 </div>
> 127 </div>
>
> the setup is not that simple, but here it goes anyway:
>
> - baselayout is a basic layout that wraps all pages as implemented in an
> abstract class called superPage.
> - all pages extend SuperPage.
> - SuperPage implements ISuperPage (for mixing services with components)
> - all pages have a quicknavigation component , although their
> implementation can be different.
> - each quickNavigation-component inherits from AbstractNavigationContainer
> (which is where the loader constraint happens)
>
> the relevant parts:
>
> BaseLayout
> ----------------------
> @Parameter(required = true)
> private ISuperPage page;
> public ISuperPage getPage()
> {
> return (ISuperPage)page;
> }
>
>
> SuperPage (implements ISuperPage)
> --------------
> @Component(parameters={"page=this"})
> private BaseLayout bl;
>
> public abstract AbstractNavigationContainer getQuickNavigation();
>
> Aanbiedingen extends SuperPage
> ----------------------------------
> @Component private QuickFormAllResults quickNavigation;
> public QuickFormAllResults getQuickNavigation() {
> return this.quickNavigation;
> }
>
> Aanbiedingen.tml
> ----------------------
> <t:baselayout t:id="bl"
> xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd";>
> <t:block>
> <t:quickformallresults t:id="quickNavigation"/>
> </t:block>
> ...
> </t:baselayout>
>
> and finally:
> QuickFormAllResults extends AbstractNavigationContainer
> ---------------------
> // nothing intersteing here
>
>
> AbstractNavigationContainer
> -------------------------------
> public SuperPage getPage()
> {
> ..... //uses componentresources to recursively traverse the tree upwards
> until it finds a componet
> of type SuperPage and returns that..
> }
>
>
> I'm really out of options, as I can't seem to comment enough lines to make
> it work: when i comment quicknavigation in baselayout.tml the error
> simply shifts to another component that implements
> AbstractNavigationContainer
>
> Thanks a lot for any help!
> Geert-Jan
>
> p.s: i was on 5.0.7 SNAPSHOT and now back on 5.0.6
>
> stacktrace:
> Caused by: java.lang.LinkageError: Class
> com/wrappt/aroer/base/AbstractNavigationContainer violates loader
> constraints
> at java.lang.ClassLoader.defineClass1(Native Method)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
> at
> java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
> at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
> at java.lang.Class.getDeclaredMethods0(Native Method)
> at java.lang.Class.privateGetDeclaredMethods(Class.java:2395)
> at java.lang.Class.getDeclaredMethods(Class.java:1763)
> at java.beans.Introspector$1.run(Introspector.java:1265)
> at java.security.AccessController.doPrivileged(Native Method)
> at
> java.beans.Introspector.getPublicDeclaredMethods(Introspector.java:1263)
> at java.beans.Introspector.getTargetMethodInfo(Introspector.java:1129)
> at java.beans.Introspector.getBeanInfo(Introspector.java:387)
> at java.beans.Introspector.getBeanInfo(Introspector.java:159)
> at
> org.apache.tapestry.ioc.internal.services.PropertyAccessImpl.buildAdapter(PropertyAccessImpl.java:85)
> ... 72 more
>
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