how to reference property value ? quiz question please.

Ken nashua Tue, 03 Jul 2007 07:54:08 -0700

Thanks...

I just have a little question...

I declared an id to a widget and trying to reference a property of thatwidget further below in html.


Here is the code..

<html jwcid="[EMAIL PROTECTED]"title="ognl:page.components.headComponent.title"stylesheet="ognl:assets.stylesheet">


<body jwcid="@Body">
<div id="page">
                <div id="header" class="clearfix">
                        <a href="#" jwcid="@PageLink" page="Home">
                                        <h1 style="padding: 5px;">

<span class="right" jwcid="@Insert"value="ognl:page.components.headComponent.title"/>

                                        </h1>
                        </a>
                </div>

The widget in question is headComponent...

Now the widget CustomHead has no problem referencingognl:page.components.headComponent.title


but thereafter down below in html... it fails nosuchproperty

<span class="right" jwcid="@Insert"value="ognl:page.components.headComponent.title"/>


How am I suppose to refer to this value?

i tried @Persist annotation in the java...

I am at a loss for how to get this thing into the session/page and refer toit.

Can someone help and let me know whats oging on... I believe this is basictapestry 101. Sorry.

Thanks in advance.

Best regards
Ken in nashua

org.apache.tapestry.BindingException

Unable to read OGNL expression '<parsed OGNL expression>' of[EMAIL PROTECTED]/$Border]: source is null for getProperty(null,"title")binding: ExpressionBinding[Home/$Borderpage.components.headComponent.title]

location:       context:/WEB-INF/Border.html, line 8
3       <body jwcid="@Body">
4       <div id="page">
5       <div id="header" class="clearfix">
6       <a href="#" jwcid="@PageLink" page="Home">
7       <h1 style="padding: 5px;">

8 <span class="right" jwcid="@Insert"value="ognl:page.components.headComponent.title"/>

9       </h1>
10      </a>
11      </div>
12

13 


org.apache.hivemind.ApplicationRuntimeException

Unable to read OGNL expression '<parsed OGNL expression>' of[EMAIL PROTECTED]/$Border]: source is null for getProperty(null,"title")

component:      [EMAIL PROTECTED]/$Border]
location:       context:/WEB-INF/Home.html, line 1
1       <span jwcid="@Border">
2       <h1><span key="org.trails.welcome">Welcome to Trails</span></h1>
3       <ul class="glassList">

4 <div class="glassList" jwcid="@Foreach" source="ognl:allDescriptors"value="ognl:descriptor">

5       <li>

6 <a href="#" jwcid="@trails:ListAllLink"typeName="ognl:descriptor.type.name"/>


ognl.OgnlException
source is null for getProperty(null, "title")
Stack Trace:

   * ognl.OgnlRuntime.getProperty(OgnlRuntime.java:1611)
   * ognl.ASTProperty.getValueBody(ASTProperty.java:96)
   * ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
   * ognl.SimpleNode.getValue(SimpleNode.java:210)
   * ognl.ASTChain.getValueBody(ASTChain.java:109)
   * ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
   * ognl.SimpleNode.getValue(SimpleNode.java:210)
   * ognl.Ognl.getValue(Ognl.java:333)
   * ognl.Ognl.getValue(Ognl.java:310)

*org.apache.tapestry.services.impl.ExpressionEvaluatorImpl.readCompiled(ExpressionEvaluatorImpl.java:91)*$ExpressionEvaluator_1138c8dc9ee.readCompiled($ExpressionEvaluator_1138c8dc9ee.java)*org.apache.tapestry.binding.ExpressionBinding.resolveExpression(ExpressionBinding.java:110)*org.apache.tapestry.binding.ExpressionBinding.getObject(ExpressionBinding.java:103)*org.apache.tapestry.binding.AbstractBinding.getObject(AbstractBinding.java:87)

   * $Insert_6.getValue($Insert_6.java)
   * org.apache.tapestry.components.Insert.renderComponent(Insert.java:42)

*org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:617)*org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:434)*org.apache.tapestry.link.DefaultLinkRenderer.renderLink(DefaultLinkRenderer.java:81)*org.apache.tapestry.link.AbstractLinkComponent.renderComponent(AbstractLinkComponent.java:95)*org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:617)*org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:434)

   * org.apache.tapestry.html.Body.renderComponent(Body.java:129)

*org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:617)*org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:434)*org.trails.demo.components.CustomHead.renderComponent(CustomHead.java:219)*org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:617)*org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:92)*org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:617)*org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:92)*org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:617)

   * org.apache.tapestry.AbstractPage.renderPage(AbstractPage.java:275)

*org.apache.tapestry.engine.RequestCycle.renderPage(RequestCycle.java:366)*org.apache.tapestry.services.impl.ResponseRendererImpl.renderResponse(ResponseRendererImpl.java:71)*$ResponseRenderer_1138c8dc8ec.renderResponse($ResponseRenderer_1138c8dc8ec.java)*$ResponseRenderer_1138c8dc8eb.renderResponse($ResponseRenderer_1138c8dc8eb.java)

   * org.apache.tapestry.engine.HomeService.service(HomeService.java:65)
   * $IEngineService_1138c8dc957.service($IEngineService_1138c8dc957.java)

*org.apache.tapestry.services.impl.EngineServiceInnerProxy.service(EngineServiceInnerProxy.java:77)*org.apache.tapestry.services.impl.EngineServiceOuterProxy.service(EngineServiceOuterProxy.java:66)*org.apache.tapestry.engine.AbstractEngine.service(AbstractEngine.java:248)*org.apache.tapestry.services.impl.InvokeEngineTerminator.service(InvokeEngineTerminator.java:60)*$WebRequestServicer_1138c8dc935.service($WebRequestServicer_1138c8dc935.java)

   * org.trails.i18n.LocaleFilter.service(LocaleFilter.java:26)

*$WebRequestServicerFilter_1138c8dc933.service($WebRequestServicerFilter_1138c8dc933.java)*$WebRequestServicer_1138c8dc937.service($WebRequestServicer_1138c8dc937.java)*$WebRequestServicer_1138c8dc92f.service($WebRequestServicer_1138c8dc92f.java)*org.apache.tapestry.services.impl.WebRequestServicerPipelineBridge.service(WebRequestServicerPipelineBridge.java:56)*$ServletRequestServicer_1138c8dc915.service($ServletRequestServicer_1138c8dc915.java)*org.apache.tapestry.request.DecodedRequestInjector.service(DecodedRequestInjector.java:55)*$ServletRequestServicerFilter_1138c8dc911.service($ServletRequestServicerFilter_1138c8dc911.java)*$ServletRequestServicer_1138c8dc917.service($ServletRequestServicer_1138c8dc917.java)*org.apache.tapestry.multipart.MultipartDecoderFilter.service(MultipartDecoderFilter.java:52)*$ServletRequestServicerFilter_1138c8dc90f.service($ServletRequestServicerFilter_1138c8dc90f.java)*$ServletRequestServicer_1138c8dc917.service($ServletRequestServicer_1138c8dc917.java)*org.apache.tapestry.services.impl.SetupRequestEncoding.service(SetupRequestEncoding.java:53)*$ServletRequestServicerFilter_1138c8dc913.service($ServletRequestServicerFilter_1138c8dc913.java)*$ServletRequestServicer_1138c8dc917.service($ServletRequestServicer_1138c8dc917.java)*$ServletRequestServicer_1138c8dc909.service($ServletRequestServicer_1138c8dc909.java)*org.apache.tapestry.ApplicationServlet.doService(ApplicationServlet.java:123)*org.apache.tapestry.ApplicationServlet.doGet(ApplicationServlet.java:79)

   * javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
   * javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
   * org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:491)

*org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1074)*org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:72)*org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1065)*org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:173)*org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:77)*org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1065)*org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:264)*org.acegisecurity.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:107)*org.acegisecurity.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:72)*org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)*org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:110)*org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)*org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)*org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)*org.acegisecurity.wrapper.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:81)*org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)*org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:217)*org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)*org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:229)*org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:274)*org.acegisecurity.util.FilterChainProxy.doFilter(FilterChainProxy.java:148)*org.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:98)*org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1065)*org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:365)*org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:185)*org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)*org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:689)

   * org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:391)

*org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:146)*org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)*org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)

   * org.mortbay.jetty.Server.handle(Server.java:285)

*org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:457)*org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:751)

   * org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:500)
   * org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:209)
   * org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:357)

*org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:329)*org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:4


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how to reference property value ? quiz question please.

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