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From Ville Virtanen <ville.virta...@cerion.fi>
Subject [T5] Any component nullpointer
Date Fri, 02 Jan 2009 19:05:53 GMT

Hello,

I have a mixin that takes two Any components as parameters. As long as the
Any components are *before* the mixin in the template everything is ok, but
if I move the Any component after the mixin (after the component that
contains the mixin) it throws nullpointer while trying to access the client
id.

Small part from Any.java:
     public String getClientId()
    {
        if (uniqueId == null)
        {
            uniqueId = renderSupport.allocateClientId(clientId);
            anyElement.forceAttributes("id", uniqueId);
        }

        return uniqueId;
    }

The anyElement is always null if the mixin is before the anyElement in the
template. Should the any component do some initialization there if
anyElement is null?

 - Ville

The mixin:
    @Parameter(allowNull=true,defaultPrefix="component")
    private Any sumField;

    @Parameter(allowNull=true,defaultPrefix="component")
    private Any priceField;

    /**
     * The field component to which this mixin is attached.
     */
    @InjectContainer
    private ClientElement clientElement;

    @Environmental
    private RenderSupport renderSupport;

    @Inject
    private ComponentResources componentResources;

    void afterRender(MarkupWriter writer) throws Exception
    {
        String df = JSUtil.commaSeparatedListToJSStringArray(disableFields);
        String ccf =
JSUtil.commaSeparatedListToJSStringArray(classChangeFields);
        String sumFieldString = "";
        if(componentResources.isBound("sumField")){
            sumFieldString = sumField.getClientId();
        }
        String priceFieldString = "";
        if(componentResources.isBound("priceField")){
            priceFieldString = priceField.getClientId();
        }

        renderSupport.addScript("disableAndChangeElements('%s', '%s', '%s',
%s, %s, '%s', '%s');", clientElement.getClientId(), enabledCssClass,
disabledCssClass, ccf, df, sumFieldString, priceFieldString);
    }

And the stacktrace:
        *
org.apache.tapestry5.corelib.components.Any.getClientId(Any.java:75)
        *
com.orient.web.customer.mixins.DisableAndChangeClass.afterRender(DisableAndChangeClass.java:63)
        *
com.orient.web.customer.mixins.DisableAndChangeClass.afterRender(DisableAndChangeClass.java)
        *
org.apache.tapestry5.internal.structure.ComponentPageElementImpl$6$1.run(ComponentPageElementImpl.java:203)
        *
org.apache.tapestry5.internal.structure.ComponentPageElementImpl.invoke(ComponentPageElementImpl.java:925)
        *
org.apache.tapestry5.internal.structure.ComponentPageElementImpl.access$200(ComponentPageElementImpl.java:50)
        *
org.apache.tapestry5.internal.structure.ComponentPageElementImpl$6.render(ComponentPageElementImpl.java:207)
        *
org.apache.tapestry5.internal.services.RenderQueueImpl.run(RenderQueueImpl.java:72)
        *
org.apache.tapestry5.internal.services.PageRenderQueueImpl.render(PageRenderQueueImpl.java:121)
        *
org.apache.tapestry5.services.TapestryModule$19.renderMarkup(TapestryModule.java:1200)
        *
org.apache.tapestry5.services.TapestryModule$29.renderMarkup(TapestryModule.java:1580)
        *
org.apache.tapestry5.services.TapestryModule$28.renderMarkup(TapestryModule.java:1561)
        *
org.apache.tapestry5.services.TapestryModule$27.renderMarkup(TapestryModule.java:1543)
        *
org.apache.tapestry5.services.TapestryModule$26.renderMarkup(TapestryModule.java:1525)
        *
org.apache.tapestry5.services.TapestryModule$25.renderMarkup(TapestryModule.java:1495)
        *
org.apache.tapestry5.internal.services.PageMarkupRendererImpl.renderPageMarkup(PageMarkupRendererImpl.java:64)
        *
org.apache.tapestry5.internal.services.PageResponseRendererImpl.renderPageResponse(PageResponseRendererImpl.java:57)
        *
org.apache.tapestry5.internal.services.PageRenderRequestHandlerImpl.handle(PageRenderRequestHandlerImpl.java:59)
        *
org.apache.tapestry5.services.TapestryModule$35.handle(TapestryModule.java:1779)
        *
com.orient.framework.tapestry.filter.ProtectedPageFilterImpl.handle(ProtectedPageFilterImpl.java:51)
        *
org.apache.tapestry5.internal.services.PageRenderDispatcher.process(PageRenderDispatcher.java:92)
        *
org.apache.tapestry5.internal.services.PageRenderDispatcher.dispatch(PageRenderDispatcher.java:71)
        *
org.apache.tapestry5.services.TapestryModule$17.service(TapestryModule.java:1029)
        *
org.apache.tapestry5.internal.services.LocalizationFilter.service(LocalizationFilter.java:42)
        *
org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:26)
        *
org.apache.tapestry5.services.TapestryModule$3.service(TapestryModule.java:621)
        *
org.apache.tapestry5.services.TapestryModule$2.service(TapestryModule.java:611)
        *
org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:85)
        *
com.orient.web.customer.services.CustomerclientModule$1.service(CustomerclientModule.java:334)
        *
org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:93)
        *
org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:84)
        *
org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:83)
        *
org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:106)
        *
org.apache.tapestry5.services.TapestryModule$16.service(TapestryModule.java:1007)
        *
org.apache.tapestry5.upload.internal.services.MultipartServletRequestFilter.service(MultipartServletRequestFilter.java:44)
        *
com.orient.web.customer.services.CustomerclientModule$3.service(CustomerclientModule.java:393)
        *
org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62)
        *
org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:179)
        *
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1115)
        *
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:361)
        *
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
        *
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
        *
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:756)
        *
org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:417)
        *
org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:206)
        *
org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
        *
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
        * org.mortbay.jetty.Server.handle(Server.java:324)
        *
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:502)
        *
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:826)
        * org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:523)
        * org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
        * org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:377)
        *
org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228)
        *
org.mortbay.jetty.security.SslSocketConnector$SslConnection.run(SslSocketConnector.java:635)
        *
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:497)


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