Something wrong with whole view layer :/ - getting NPE

[yacho]

OK so im past my DB problems but now i got something like :

i have 2 views in my app - index and register.

index renders fine - when i click on register link it follows me to the register.xhtml view wich is ok but i get NPE Exception :

java.lang.NullPointerException
 at com.sun.faces.renderkit.html_basic.MenuRenderer.renderOption(MenuRenderer.java:580)
 at com.sun.faces.renderkit.html_basic.MenuRenderer.renderOptions(MenuRenderer.java:757)
 at com.sun.faces.renderkit.html_basic.MenuRenderer.renderSelect(MenuRenderer.java:811)
 at com.sun.faces.renderkit.html_basic.MenuRenderer.encodeEnd(MenuRenderer.java:335)
 at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:836)
 at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:279)
 at com.sun.faces.renderkit.html_basic.GridRenderer.encodeChildren(GridRenderer.java:242)
 at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
 at org.ajax4jsf.framework.renderer.RendererBase.renderChild(RendererBase.java:282)
 at org.ajax4jsf.framework.renderer.RendererBase.renderChildren(RendererBase.java:262)
 at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:189)
 at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:184)
 at org.ajax4jsf.framework.renderer.RendererBase.encodeChildren(RendererBase.java:121)
 at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
 at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886)
 at javax.faces.render.Renderer.encodeChildren(Renderer.java:137)
 at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
 at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886)
 at javax.faces.component.UIComponent.encodeAll(UIComponent.java:892)
 at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:577)
 at org.ajax4jsf.framework.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
 at org.ajax4jsf.framework.ajax.AjaxViewHandler.renderView(AjaxViewHandler.java:233)
 at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
 at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
 at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
 at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:63)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
 at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:87)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
 at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:63)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
 at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:46)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
 at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:127)
 at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:277)
 at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:40)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
 at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:140)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
 at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
 at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
 at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:580)
 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
 at java.lang.Thread.run(Thread.java:595)

Also i get some warnings about duplicated seam libraries but to be honest i dont know how to eliminate them.

Please help :/

[norman.richards]

What does your view look like?

[yacho]

View looks like this : http://phpfi.com/263397 (sorry for not pasting via bb - i think phpfi is kinda cleaner and easier to read.)

[smithbstl]

I was getting a similar error the other day (Seam Beta 1). It was occurring when using a rich:tabPanel. I was using ajax switching for the tabs and it was on a particular tab I getting errors. It only happened after I refactored a monolithic xhtml file to use facelet templating. I never got it resolved (other than to switch to client side switching)

[yacho]

the most irrating part is that it worked like a week ago :P

[yacho]

when view wich works (index.xhtml) gets rendered i get the following on AS console :

21:46:44,843 ERROR [STDERR] 2007-09-17 21:46:44 com.sun.facelets.compiler.TagLib
raryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/JBossAS/server/default/deploy/magisterka1
.ear/magisterka1.war/WEB-INF/lib/richfaces-3.0.1.jar!/META-INF/rich.taglib.xml
21:46:45,000 ERROR [STDERR] 2007-09-17 21:46:45 com.sun.facelets.compiler.TagLib
raryConfig loadImplicit
INFO: Added Library from: jar:file:/D:/JBossAS/server/default/deploy/magisterka1
.ear/magisterka1.war/WEB-INF/lib/ajax4jsf-1.1.1.jar!/META-INF/a4j.taglib.xml

[yacho]

OK the thing that causes the error is <h:selectOneMenu> tag - when i cut it off it runs smooth - anyone can tell me why this happens ?

[asavitsky]

The bug is in JSF RI, filed here: https://javaserverfaces.dev.java.net/issues/show_bug.cgi?id=616

Just grab the CVS version of com.sun.faces.renderkit.html_basic.MenuRenderer, and you should be ok.

[yacho]

sorry 4 asking silly questions but how to exchange one file in jar archive ?

[yacho]

And where JBoss AS holds its jsf-impl.jar ? only jsf jar I can find is in my project tree in lib/ (project was generated with seam-gen) is this the right place ?

[asavitsky]

Yes, this sounds about right (though I never used seam-gen, so I have no idea about the structures it creates). Overriding a class is trivial - just include the correct version in WEB-INF/classes, this will override the JAR version. To be on the safe side, you might as well open the JAR with any ZIP program (WinZip, WinRAR, etc.) and delete the old class version. Is this a web (WAR) project you have, or a full-blown EAR?

[yacho]

My App is an EAR and i wonder - jsf is actually a web thingie so WEB-INF/classes should be ok.
but this is jsf-impl so does that change the deal or not ?

[asavitsky]

Yes, jsf-impl is the correct file. Make sure it's listed as part of WAR libraries (not EAR, so you don't run into classloading problems), and then override the class in WEB-INF/classes. Should work.

[yacho]

hymm - when i try to acces CVS i get error like so :

cvs -d :pserver:[e-mail]:/cvs checkout javaserverfaces-sources
User yacho doesn't have <VersionControl - Read> access to project javaserverfaces-sources

I's there any chance someone could send me compiled MenuRenderer.class ? or explain how to get read perissions ?

[asavitsky]

Just make the changes yourself, then (you did read the bug report details, didn't you?).

Grab MenuRenderer from the latest RI release.

Scroll to the end of renderOption method, and change the following code block

if (curItem.isEscape()) {
 String label = curItem.getLabel();
 if (label == null) {
 label = curItem.getValue().toString();
 }
 writer.writeText(label, component, "label");
 } else {
 writer.write(curItem.getLabel());
 }

to this one:

if (curItem.isEscape()) {
 String label = curItem.getLabel();
 if (label == null) {
 label = valueString;
 }
 writer.writeText(label, component, "label");
 } else {
 writer.write(curItem.getLabel());
 }

Include the changed file in your web project (mind the correct package name), this should automatically place the compiled class into WEB-INF/classes.