org.apache.tapestry.BindingException: Unable to read OGNL expression
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Key: TAPESTRY-1482
URL: https://issues.apache.org/jira/browse/TAPESTRY-1482
Project: Tapestry
Issue Type: Bug
Components: Framework
Affects Versions: 4.1.2
Environment: Tapestry 4.1.2 (5/19), ognl (5/19)
Reporter: Heath Nielson
I have a PageError component defined as follows:
.jwc
<component-specification allow-body="false" allow-informal-parameters="false">
<parameter name="delegate" default-value="page.validationDelegate" />
<property name="errorRenderer" />
</component-specification>
.html
<html>
<body jwcid="$content$">
<div jwcid="@If" condition="ognl:delegate.hasErrors" class="error">
<ul>
<li jwcid="@For" source="ognl:delegate.errorRenderers"
value="ognl:errorRenderer" style="color:red;" element="li">
<span jwcid="@Delegator" delegate="ognl:errorRenderer">Error
Message</span>
</li>
</ul>
</div>
</body>
</html>
I include this component in all pages which inherit from FormPage which defines
the following bean:
@Bean(ValidationDelegate.class)
public abstract IValidationDelegate getValidationDelegate();
My login page (the first viewable page) the component works as expected and I
get the following log:
DEBUG org.apache.tapestry.BaseComponent - Begin render Login/$PageError
DEBUG org.apache.tapestry.services.impl.HiveMindExpressionCompiler - Compiling
expr class ognl.ASTChain and root $BaseComponent_20 with
toString:delegate.hasErrors
DEBUG org.apache.tapestry.services.impl.HiveMindExpressionCompiler - Compiling
expr class ognl.ASTChain and root $BaseComponent_20 with
toString:page.validationDelegate
DEBUG org.apache.tapestry.bean.BeanProvider - getBean(validationDelegate)
DEBUG org.apache.tapestry.bean.BeanProvider - Instantiating instance of
org.apache.tapestry.valid.ValidationDelegate
DEBUG org.apache.tapestry.bean.BeanProvider - getBean(validationDelegate)
DEBUG org.apache.tapestry.services.impl.HiveMindExpressionCompiler - Getter
Body: ==================================={ return
((caseTracker.pages.Login)(($BaseComponent_20)$2).getPage()).getValidationDelegate();}
DEBUG org.apache.tapestry.bean.BeanProvider - getBean(validationDelegate)
DEBUG org.apache.tapestry.bean.BeanProvider - getBean(validationDelegate)
DEBUG org.apache.tapestry.services.impl.HiveMindExpressionCompiler - Getter
Body: ==================================={ return ($w)
(((org.apache.tapestry.valid.IValidationDelegate)(($BaseComponent_20)$2).getDelegate()).getHasErrors());}
DEBUG org.apache.tapestry.engine.RequestCycle - Set attribute
org.mb.tapestry.base.IfValue to false
19563 [btpool0-2] DEBUG org.apache.tapestry.BaseComponent - End render
Login/$PageError
However, when I go to the next page which embeds the PageError component, I get
the following error:
DEBUG org.apache.tapestry.BaseComponent - Begin render AddClient/$PageError
DEBUG org.apache.tapestry.engine.RequestCycle - Removing attribute
org.apache.tapestry.html.Shell
DEBUG org.apache.tapestry.engine.AbstractEngine - Uncaught exception
org.apache.tapestry.BindingException: Unable to read OGNL expression '<parsed
OGNL expression>' of [EMAIL PROTECTED]/$PageError]: Unable to read OGNL
expression '<parsed OGNL expression>' of [EMAIL PROTECTED]/$PageError]:
$AddClient_24 [context:/WEB-INF/PageError.html, line 3]
at
org.apache.tapestry.binding.ExpressionBinding.resolveExpression(ExpressionBinding.java:134)
at
org.apache.tapestry.binding.ExpressionBinding.getObject(ExpressionBinding.java:113)
at
org.apache.tapestry.binding.AbstractBinding.getObject(AbstractBinding.java:84)
at
org.apache.tapestry.enhance.EnhanceUtils.toBoolean(EnhanceUtils.java:176)
at $IfBean_4.getCondition($IfBean_4.java)
at
org.apache.tapestry.components.IfBean.evaluateCondition(IfBean.java:116)
at org.apache.tapestry.components.IfBean.renderComponent(IfBean.java:70)
at
org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:723)
at
org.apache.tapestry.services.impl.DefaultResponseBuilder.render(DefaultResponseBuilder.java:184)
at
org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:107)
at
org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:723)
at
org.apache.tapestry.services.impl.DefaultResponseBuilder.render(DefaultResponseBuilder.java:184)
at
org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:537)
at
org.apache.tapestry.components.RenderBody.renderComponent(RenderBody.java:39)
at
org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:723)
at
org.apache.tapestry.services.impl.DefaultResponseBuilder.render(DefaultResponseBuilder.java:184)
at
org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:537)
at org.apache.tapestry.html.Body.renderComponent(Body.java:38)
at
org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:723)
at
org.apache.tapestry.services.impl.DefaultResponseBuilder.render(DefaultResponseBuilder.java:184)
at
org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.java:537)
at org.apache.tapestry.html.Shell.renderComponent(Shell.java:126)
at
org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:723)
at
org.apache.tapestry.services.impl.DefaultResponseBuilder.render(DefaultResponseBuilder.java:184)
at
org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:107)
at
org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:723)
at
org.apache.tapestry.services.impl.DefaultResponseBuilder.render(DefaultResponseBuilder.java:184)
at
org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:107)
at
org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:723)
at
org.apache.tapestry.services.impl.DefaultResponseBuilder.render(DefaultResponseBuilder.java:182)
at org.apache.tapestry.AbstractPage.renderPage(AbstractPage.java:237)
at
org.apache.tapestry.engine.RequestCycle.renderPage(RequestCycle.java:397)
at
org.apache.tapestry.services.impl.DefaultResponseBuilder.renderResponse(DefaultResponseBuilder.java:158)
at
org.apache.tapestry.services.impl.ResponseRendererImpl.renderResponse(ResponseRendererImpl.java:33)
at
$ResponseRenderer_112ab1cb761.renderResponse($ResponseRenderer_112ab1cb761.java)
at
org.apache.tapestry.engine.AbstractEngine.renderResponse(AbstractEngine.java:208)
at
org.apache.tapestry.engine.AbstractEngine.handlePageRedirectException(AbstractEngine.java:336)
at
org.apache.tapestry.engine.AbstractEngine.service(AbstractEngine.java:252)
at
org.apache.tapestry.services.impl.InvokeEngineTerminator.service(InvokeEngineTerminator.java:54)
at
$WebRequestServicer_112ab1cb7bc.service($WebRequestServicer_112ab1cb7bc.java)
at
com.javaforge.tapestry.tapernate.filter.TapernateFilter.service(TapernateFilter.java:81)
at
$WebRequestServicerFilter_112ab1cb7ba.service($WebRequestServicerFilter_112ab1cb7ba.java)
at
$WebRequestServicer_112ab1cb7be.service($WebRequestServicer_112ab1cb7be.java)
at
$WebRequestServicer_112ab1cb7b6.service($WebRequestServicer_112ab1cb7b6.java)
at
org.apache.tapestry.services.impl.WebRequestServicerPipelineBridge.service(WebRequestServicerPipelineBridge.java:61)
at
$ServletRequestServicer_112ab1cb79c.service($ServletRequestServicer_112ab1cb79c.java)
at
org.apache.tapestry.request.DecodedRequestInjector.service(DecodedRequestInjector.java:55)
at
$ServletRequestServicerFilter_112ab1cb798.service($ServletRequestServicerFilter_112ab1cb798.java)
at
$ServletRequestServicer_112ab1cb79e.service($ServletRequestServicer_112ab1cb79e.java)
at
org.apache.tapestry.multipart.MultipartDecoderFilter.service(MultipartDecoderFilter.java:52)
at
$ServletRequestServicerFilter_112ab1cb796.service($ServletRequestServicerFilter_112ab1cb796.java)
at
$ServletRequestServicer_112ab1cb79e.service($ServletRequestServicer_112ab1cb79e.java)
at
org.apache.tapestry.services.impl.SetupRequestEncoding.service(SetupRequestEncoding.java:53)
at
$ServletRequestServicerFilter_112ab1cb79a.service($ServletRequestServicerFilter_112ab1cb79a.java)
at
$ServletRequestServicer_112ab1cb79e.service($ServletRequestServicer_112ab1cb79e.java)
at
$ServletRequestServicer_112ab1cb781.service($ServletRequestServicer_112ab1cb781.java)
at
org.apache.tapestry.ApplicationServlet.doService(ApplicationServlet.java:123)
at
org.apache.tapestry.ApplicationServlet.doGet(ApplicationServlet.java:104)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:747)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:423)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:355)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:226)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:567)
at
org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:147)
at
org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:126)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:119)
at org.mortbay.jetty.Server.handle(Server.java:248)
at
org.mortbay.jetty.HttpConnection.handlerRequest(HttpConnection.java:360)
at
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:614)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:487)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:197)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:288)
at
org.mortbay.jetty.nio.SelectChannelConnector$HttpChannelEndPoint.run(SelectChannelConnector.java:805)
at
org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:475)
Caused by: org.apache.hivemind.ApplicationRuntimeException: Unable to read OGNL
expression '<parsed OGNL expression>' of [EMAIL PROTECTED]/$PageError]: Unable
to read OGNL expression '<parsed OGNL expression>' of [EMAIL
PROTECTED]/$PageError]: $AddClient_24 [context:/WEB-INF/PageError.jwc, line 8,
column 72]
at
org.apache.tapestry.services.impl.ExpressionEvaluatorImpl.read(ExpressionEvaluatorImpl.java:145)
at
$ExpressionEvaluator_112ab1cb896.read($ExpressionEvaluator_112ab1cb896.java)
at
org.apache.tapestry.binding.ExpressionBinding.resolveExpression(ExpressionBinding.java:128)
... 74 more
Caused by: org.apache.tapestry.BindingException: Unable to read OGNL
expression'<parsed OGNL expression>' of [EMAIL
PROTECTED]/$PageError]:$AddClient_24 [context:/WEB-INF/PageError.jwc, line 8,
column 72]
at
org.apache.tapestry.binding.ExpressionBinding.resolveExpression(ExpressionBinding.java:134)
at
org.apache.tapestry.binding.ExpressionBinding.getObject(ExpressionBinding.java:113)
at
org.apache.tapestry.binding.AbstractBinding.getObject(AbstractBinding.java:84)
at $BaseComponent_20.getDelegate($BaseComponent_20.java)
at $ASTChain_112ab1cb8cf.get($ASTChain_112ab1cb8cf.java)
at
org.apache.tapestry.services.impl.ExpressionEvaluatorImpl.read(ExpressionEvaluatorImpl.java:141)
... 76 more
Caused by: org.apache.hivemind.ApplicationRuntimeException: Unable to read OGNL
expression '<parsed OGNL expression>' of [EMAIL PROTECTED]/$PageError]:
$AddClient_24 [context:/WEB-INF/clients/AddClient.html, line 13]
at
org.apache.tapestry.services.impl.ExpressionEvaluatorImpl.read(ExpressionEvaluatorImpl.java:145)
at
$ExpressionEvaluator_112ab1cb896.read($ExpressionEvaluator_112ab1cb896.java)
at
org.apache.tapestry.binding.ExpressionBinding.resolveExpression(ExpressionBinding.java:128)
... 81 more
Caused by: java.lang.ClassCastException: $AddClient_24
at $ASTChain_112ab1cb8d0.get($ASTChain_112ab1cb8d0.java)
at
org.apache.tapestry.services.impl.ExpressionEvaluatorImpl.read(ExpressionEvaluatorImpl.java:141)
... 83 more
The error disappears when I set org.apache.tapestry.disable-caching to true.
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