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Posted to users@tapestry.apache.org by digital boy <22...@googlemail.com> on 2008/11/10 17:31:32 UTC
ClassCastException for objects of the same class
Hi,I am rather new to Hibernate, Spring and Tapestry. So I do not
know/understand where exactly my current problem arises from. My guess is,
that Tapestry complains (as seen in the exception stack trace)
I want to create a tag cloud component for Tapestry. In order to retrieve
tag data for this component, I wrote a TagManager (Spring) which then
utilizes a TagDAO (Hibernate) in order to access the tags stored in my
database model. For creating the tag cloud, I need a kind of weight which
represents the number of occurrences of a certain tag. This is why I created
a bean named WeightedTag. This bean is used with a ResultTransformer that
passes all the query results into the right objects. Debugging output in the
TagDAO class shows me, that this whole thing works. All the tag names and
their weight are in the appropriate fields of the WeightedTag objects.
The actual problem arises, when the component gets this List of WeightedTags
List<WeightedTag>. For whatsoever reason this component throws an Exception
with the following stack trace which I do not understand. The root cause
seems to be a ClassCastException for Objects of the very same class. I tried
all kinds of variations already. None of them worked.
So is this a bug, a feature or just my limited java skills?
Cheers,
Martin
Here is the stack trace:
org.apache.tapestry5.ioc.internal.util.TapestryException:
xxx.xxxx.base.WeightedTag
cannot be cast to xxx.xxxx.base.WeightedTag [at
classpath:xxx/xxxx/components/TagCloud.tml, line 7, column 107]
at
org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:57)
at
org.apache.tapestry5.internal.structure.ExpansionPageElement.render(ExpansionPageElement.java:47)
at
org.apache.tapestry5.internal.services.RenderQueueImpl.run(RenderQueueImpl.java:68)
at
org.apache.tapestry5.internal.services.PageRenderQueueImpl.render(PageRenderQueueImpl.java:108)
at $PageRenderQueue_11d87265edc.render($PageRenderQueue_11d87265edc.java)
at $PageRenderQueue_11d87265ed5.render($PageRenderQueue_11d87265ed5.java)
at
org.apache.tapestry5.services.TapestryModule$14.renderMarkup(TapestryModule.java:1128)
at
org.apache.tapestry5.services.TapestryModule$23.renderMarkup(TapestryModule.java:1472)
at
$MarkupRenderer_11d87265ede.renderMarkup($MarkupRenderer_11d87265ede.java)
at
org.apache.tapestry5.services.TapestryModule$22.renderMarkup(TapestryModule.java:1453)
at
$MarkupRenderer_11d87265ede.renderMarkup($MarkupRenderer_11d87265ede.java)
at
org.apache.tapestry5.services.TapestryModule$21.renderMarkup(TapestryModule.java:1435)
at
$MarkupRenderer_11d87265ede.renderMarkup($MarkupRenderer_11d87265ede.java)
at
org.apache.tapestry5.services.TapestryModule$20.renderMarkup(TapestryModule.java:1415)
at
$MarkupRenderer_11d87265ede.renderMarkup($MarkupRenderer_11d87265ede.java)
at
$MarkupRenderer_11d87265eda.renderMarkup($MarkupRenderer_11d87265eda.java)
at
org.apache.tapestry5.internal.services.PageMarkupRendererImpl.renderPageMarkup(PageMarkupRendererImpl.java:55)
at
$PageMarkupRenderer_11d87265ed8.renderPageMarkup($PageMarkupRenderer_11d87265ed8.java)
at
org.apache.tapestry5.internal.services.PageResponseRendererImpl.renderPageResponse(PageResponseRendererImpl.java:57)
at
$PageResponseRenderer_11d87265e68.renderPageResponse($PageResponseRenderer_11d87265e68.java)
at
org.apache.tapestry5.internal.services.PageRenderRequestHandlerImpl.handle(PageRenderRequestHandlerImpl.java:59)
at
org.apache.tapestry5.services.TapestryModule$28.handle(TapestryModule.java:1672)
at
$PageRenderRequestHandler_11d87265e69.handle($PageRenderRequestHandler_11d87265e69.java)
at
$PageRenderRequestHandler_11d87265e5d.handle($PageRenderRequestHandler_11d87265e5d.java)
at
org.apache.tapestry5.internal.services.PageRenderDispatcher.process(PageRenderDispatcher.java:97)
at
org.apache.tapestry5.internal.services.PageRenderDispatcher.dispatch(PageRenderDispatcher.java:83)
at $Dispatcher_11d87265e64.dispatch($Dispatcher_11d87265e64.java)
at $Dispatcher_11d87265e55.dispatch($Dispatcher_11d87265e55.java)
at
org.apache.tapestry5.services.TapestryModule$12.service(TapestryModule.java:938)
at
org.apache.tapestry5.internal.services.LocalizationFilter.service(LocalizationFilter.java:42)
at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
at
org.apache.tapestry5.services.TapestryModule$2.service(TapestryModule.java:586)
at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
at
org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:26)
at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
at
org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:79)
at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
at
org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:93)
at
org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:84)
at
org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:75)
at
org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:106)
at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
at $RequestHandler_11d87265e4e.service($RequestHandler_11d87265e4e.java)
at
org.apache.tapestry5.services.TapestryModule$11.service(TapestryModule.java:918)
at
org.apache.tapestry5.upload.internal.services.MultipartServletRequestFilter.service(MultipartServletRequestFilter.java:44)
at
$HttpServletRequestHandler_11d87265e4f.service($HttpServletRequestHandler_11d87265e4f.java)
at
org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62)
at
$HttpServletRequestFilter_11d87265e4d.service($HttpServletRequestFilter_11d87265e4d.java)
at
$HttpServletRequestHandler_11d87265e4f.service($HttpServletRequestHandler_11d87265e4f.java)
at
$HttpServletRequestHandler_11d87265e4b.service($HttpServletRequestHandler_11d87265e4b.java)
at org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:168)
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:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassCastException: xxx.xxxx.base.WeightedTag cannot be
cast to xxx.xxxx.base.WeightedTag
at xxx.xxxx.components.TagCloud.getTags(TagCloud.java:65)
at $PropertyConduit_11d87265ef2.get($PropertyConduit_11d87265ef2.java)
at
org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:53)
... 62 more
10-11-2008 17:08:51:434 9 ERROR
org.apache.tapestry5.services.TapestryModule.RequestExceptionHandler -
Processing of request failed with uncaught exception: Render queue error in
Expansion[PropBinding[expansion
Index:tagcloud(tags)]]: xxx.xxxx.base.WeightedTag cannot be cast
to xxx.xxxx.base.WeightedTag
org.apache.tapestry5.internal.services.RenderQueueException: Render queue
error in Expansion[PropBinding[expansion
Index:tagcloud(tags)]]: xxx.xxxx.base.WeightedTag cannot be cast
to xxx.xxxx.base.WeightedTag [at classpath:xxx/xxxx/components/TagCloud.tml,
line 7, column 107]
at
org.apache.tapestry5.internal.services.RenderQueueImpl.run(RenderQueueImpl.java:80)
at
org.apache.tapestry5.internal.services.PageRenderQueueImpl.render(PageRenderQueueImpl.java:108)
at $PageRenderQueue_11d87265edc.render($PageRenderQueue_11d87265edc.java)
at $PageRenderQueue_11d87265ed5.render($PageRenderQueue_11d87265ed5.java)
at
org.apache.tapestry5.services.TapestryModule$14.renderMarkup(TapestryModule.java:1128)
at
org.apache.tapestry5.services.TapestryModule$23.renderMarkup(TapestryModule.java:1472)
at
$MarkupRenderer_11d87265ede.renderMarkup($MarkupRenderer_11d87265ede.java)
at
org.apache.tapestry5.services.TapestryModule$22.renderMarkup(TapestryModule.java:1453)
at
$MarkupRenderer_11d87265ede.renderMarkup($MarkupRenderer_11d87265ede.java)
at
org.apache.tapestry5.services.TapestryModule$21.renderMarkup(TapestryModule.java:1435)
at
$MarkupRenderer_11d87265ede.renderMarkup($MarkupRenderer_11d87265ede.java)
at
org.apache.tapestry5.services.TapestryModule$20.renderMarkup(TapestryModule.java:1415)
at
$MarkupRenderer_11d87265ede.renderMarkup($MarkupRenderer_11d87265ede.java)
at
$MarkupRenderer_11d87265eda.renderMarkup($MarkupRenderer_11d87265eda.java)
at
org.apache.tapestry5.internal.services.PageMarkupRendererImpl.renderPageMarkup(PageMarkupRendererImpl.java:55)
at
$PageMarkupRenderer_11d87265ed8.renderPageMarkup($PageMarkupRenderer_11d87265ed8.java)
at
org.apache.tapestry5.internal.services.PageResponseRendererImpl.renderPageResponse(PageResponseRendererImpl.java:57)
at
$PageResponseRenderer_11d87265e68.renderPageResponse($PageResponseRenderer_11d87265e68.java)
at
org.apache.tapestry5.internal.services.PageRenderRequestHandlerImpl.handle(PageRenderRequestHandlerImpl.java:59)
at
org.apache.tapestry5.services.TapestryModule$28.handle(TapestryModule.java:1672)
at
$PageRenderRequestHandler_11d87265e69.handle($PageRenderRequestHandler_11d87265e69.java)
at
$PageRenderRequestHandler_11d87265e5d.handle($PageRenderRequestHandler_11d87265e5d.java)
at
org.apache.tapestry5.internal.services.PageRenderDispatcher.process(PageRenderDispatcher.java:97)
at
org.apache.tapestry5.internal.services.PageRenderDispatcher.dispatch(PageRenderDispatcher.java:83)
at $Dispatcher_11d87265e64.dispatch($Dispatcher_11d87265e64.java)
at $Dispatcher_11d87265e55.dispatch($Dispatcher_11d87265e55.java)
at
org.apache.tapestry5.services.TapestryModule$12.service(TapestryModule.java:938)
at
org.apache.tapestry5.internal.services.LocalizationFilter.service(LocalizationFilter.java:42)
at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
at
org.apache.tapestry5.services.TapestryModule$2.service(TapestryModule.java:586)
at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
at
org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:26)
at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
at
org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:79)
at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
at
org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:93)
at
org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:84)
at
org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:75)
at
org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:106)
at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
at $RequestHandler_11d87265e4e.service($RequestHandler_11d87265e4e.java)
at
org.apache.tapestry5.services.TapestryModule$11.service(TapestryModule.java:918)
at
org.apache.tapestry5.upload.internal.services.MultipartServletRequestFilter.service(MultipartServletRequestFilter.java:44)
at
$HttpServletRequestHandler_11d87265e4f.service($HttpServletRequestHandler_11d87265e4f.java)
at
org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62)
at
$HttpServletRequestFilter_11d87265e4d.service($HttpServletRequestFilter_11d87265e4d.java)
at
$HttpServletRequestHandler_11d87265e4f.service($HttpServletRequestHandler_11d87265e4f.java)
at
$HttpServletRequestHandler_11d87265e4b.service($HttpServletRequestHandler_11d87265e4b.java)
at org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:168)
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:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Unknown Source)
Caused by:
org.apache.tapestry5.ioc.internal.util.TapestryException:
xxx.xxxx.base.WeightedTag
cannot be cast to xxx.xxxx.base.WeightedTag [at
classpath:xxx/xxxx/components/TagCloud.tml, line 7, column 107]
at
org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:57)
at
org.apache.tapestry5.internal.structure.ExpansionPageElement.render(ExpansionPageElement.java:47)
at
org.apache.tapestry5.internal.services.RenderQueueImpl.run(RenderQueueImpl.java:68)
... 60 more
Caused by: java.lang.ClassCastException: xxx.xxxx.base.WeightedTag cannot be
cast to xxx.xxxx.base.WeightedTag
at xxx.xxxx.components.TagCloud.getTags(TagCloud.java:65)
at $PropertyConduit_11d87265ef2.get($PropertyConduit_11d87265ef2.java)
at
org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:53)
... 62 more
Re: ClassCastException for objects of the same class
Posted by "Thiago H. de Paula Figueiredo" <th...@gmail.com>.
Em Mon, 10 Nov 2008 14:18:57 -0300, Howard Lewis Ship <hl...@gmail.com>
escreveu:
> FAQ
>
> http://tapestry.formos.com/nightly/tapestry5/faq/general.html#classcastexception
In other words, you can't use a Tapestry-transformed class (page, mixin,
component) in a non Tapestry-transformed class. I discovered it the hard
way when I tried to pass a Form instance to a service . . .
--
Thiago H. de Paula Figueiredo
Independent Java consultant, developer, and instructor
http://www.arsmachina.com.br/thiago
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Re: ClassCastException for objects of the same class
Posted by Howard Lewis Ship <hl...@gmail.com>.
FAQ
http://tapestry.formos.com/nightly/tapestry5/faq/general.html#classcastexception
On Mon, Nov 10, 2008 at 8:31 AM, digital boy
<22...@googlemail.com> wrote:
> Hi,I am rather new to Hibernate, Spring and Tapestry. So I do not
> know/understand where exactly my current problem arises from. My guess is,
> that Tapestry complains (as seen in the exception stack trace)
> I want to create a tag cloud component for Tapestry. In order to retrieve
> tag data for this component, I wrote a TagManager (Spring) which then
> utilizes a TagDAO (Hibernate) in order to access the tags stored in my
> database model. For creating the tag cloud, I need a kind of weight which
> represents the number of occurrences of a certain tag. This is why I created
> a bean named WeightedTag. This bean is used with a ResultTransformer that
> passes all the query results into the right objects. Debugging output in the
> TagDAO class shows me, that this whole thing works. All the tag names and
> their weight are in the appropriate fields of the WeightedTag objects.
>
> The actual problem arises, when the component gets this List of WeightedTags
> List<WeightedTag>. For whatsoever reason this component throws an Exception
> with the following stack trace which I do not understand. The root cause
> seems to be a ClassCastException for Objects of the very same class. I tried
> all kinds of variations already. None of them worked.
>
> So is this a bug, a feature or just my limited java skills?
>
> Cheers,
> Martin
>
> Here is the stack trace:
>
> org.apache.tapestry5.ioc.internal.util.TapestryException:
> xxx.xxxx.base.WeightedTag
> cannot be cast to xxx.xxxx.base.WeightedTag [at
> classpath:xxx/xxxx/components/TagCloud.tml, line 7, column 107]
> at
> org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:57)
> at
> org.apache.tapestry5.internal.structure.ExpansionPageElement.render(ExpansionPageElement.java:47)
> at
> org.apache.tapestry5.internal.services.RenderQueueImpl.run(RenderQueueImpl.java:68)
> at
> org.apache.tapestry5.internal.services.PageRenderQueueImpl.render(PageRenderQueueImpl.java:108)
> at $PageRenderQueue_11d87265edc.render($PageRenderQueue_11d87265edc.java)
> at $PageRenderQueue_11d87265ed5.render($PageRenderQueue_11d87265ed5.java)
> at
> org.apache.tapestry5.services.TapestryModule$14.renderMarkup(TapestryModule.java:1128)
> at
> org.apache.tapestry5.services.TapestryModule$23.renderMarkup(TapestryModule.java:1472)
> at
> $MarkupRenderer_11d87265ede.renderMarkup($MarkupRenderer_11d87265ede.java)
> at
> org.apache.tapestry5.services.TapestryModule$22.renderMarkup(TapestryModule.java:1453)
> at
> $MarkupRenderer_11d87265ede.renderMarkup($MarkupRenderer_11d87265ede.java)
> at
> org.apache.tapestry5.services.TapestryModule$21.renderMarkup(TapestryModule.java:1435)
> at
> $MarkupRenderer_11d87265ede.renderMarkup($MarkupRenderer_11d87265ede.java)
> at
> org.apache.tapestry5.services.TapestryModule$20.renderMarkup(TapestryModule.java:1415)
> at
> $MarkupRenderer_11d87265ede.renderMarkup($MarkupRenderer_11d87265ede.java)
> at
> $MarkupRenderer_11d87265eda.renderMarkup($MarkupRenderer_11d87265eda.java)
> at
> org.apache.tapestry5.internal.services.PageMarkupRendererImpl.renderPageMarkup(PageMarkupRendererImpl.java:55)
> at
> $PageMarkupRenderer_11d87265ed8.renderPageMarkup($PageMarkupRenderer_11d87265ed8.java)
> at
> org.apache.tapestry5.internal.services.PageResponseRendererImpl.renderPageResponse(PageResponseRendererImpl.java:57)
> at
> $PageResponseRenderer_11d87265e68.renderPageResponse($PageResponseRenderer_11d87265e68.java)
> at
> org.apache.tapestry5.internal.services.PageRenderRequestHandlerImpl.handle(PageRenderRequestHandlerImpl.java:59)
> at
> org.apache.tapestry5.services.TapestryModule$28.handle(TapestryModule.java:1672)
> at
> $PageRenderRequestHandler_11d87265e69.handle($PageRenderRequestHandler_11d87265e69.java)
> at
> $PageRenderRequestHandler_11d87265e5d.handle($PageRenderRequestHandler_11d87265e5d.java)
> at
> org.apache.tapestry5.internal.services.PageRenderDispatcher.process(PageRenderDispatcher.java:97)
> at
> org.apache.tapestry5.internal.services.PageRenderDispatcher.dispatch(PageRenderDispatcher.java:83)
> at $Dispatcher_11d87265e64.dispatch($Dispatcher_11d87265e64.java)
> at $Dispatcher_11d87265e55.dispatch($Dispatcher_11d87265e55.java)
> at
> org.apache.tapestry5.services.TapestryModule$12.service(TapestryModule.java:938)
> at
> org.apache.tapestry5.internal.services.LocalizationFilter.service(LocalizationFilter.java:42)
> at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
> at
> org.apache.tapestry5.services.TapestryModule$2.service(TapestryModule.java:586)
> at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
> at
> org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:26)
> at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
> at
> org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:79)
> at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
> at
> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:93)
> at
> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:84)
> at
> org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:75)
> at
> org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:106)
> at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
> at $RequestHandler_11d87265e4e.service($RequestHandler_11d87265e4e.java)
> at
> org.apache.tapestry5.services.TapestryModule$11.service(TapestryModule.java:918)
> at
> org.apache.tapestry5.upload.internal.services.MultipartServletRequestFilter.service(MultipartServletRequestFilter.java:44)
> at
> $HttpServletRequestHandler_11d87265e4f.service($HttpServletRequestHandler_11d87265e4f.java)
> at
> org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62)
> at
> $HttpServletRequestFilter_11d87265e4d.service($HttpServletRequestFilter_11d87265e4d.java)
> at
> $HttpServletRequestHandler_11d87265e4f.service($HttpServletRequestHandler_11d87265e4f.java)
> at
> $HttpServletRequestHandler_11d87265e4b.service($HttpServletRequestHandler_11d87265e4b.java)
> at org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:168)
> 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:233)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
> at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
> at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
> at java.lang.Thread.run(Unknown Source)
> Caused by: java.lang.ClassCastException: xxx.xxxx.base.WeightedTag cannot be
> cast to xxx.xxxx.base.WeightedTag
> at xxx.xxxx.components.TagCloud.getTags(TagCloud.java:65)
> at $PropertyConduit_11d87265ef2.get($PropertyConduit_11d87265ef2.java)
> at
> org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:53)
> ... 62 more
> 10-11-2008 17:08:51:434 9 ERROR
> org.apache.tapestry5.services.TapestryModule.RequestExceptionHandler -
> Processing of request failed with uncaught exception: Render queue error in
> Expansion[PropBinding[expansion
> Index:tagcloud(tags)]]: xxx.xxxx.base.WeightedTag cannot be cast
> to xxx.xxxx.base.WeightedTag
> org.apache.tapestry5.internal.services.RenderQueueException: Render queue
> error in Expansion[PropBinding[expansion
> Index:tagcloud(tags)]]: xxx.xxxx.base.WeightedTag cannot be cast
> to xxx.xxxx.base.WeightedTag [at classpath:xxx/xxxx/components/TagCloud.tml,
> line 7, column 107]
> at
> org.apache.tapestry5.internal.services.RenderQueueImpl.run(RenderQueueImpl.java:80)
> at
> org.apache.tapestry5.internal.services.PageRenderQueueImpl.render(PageRenderQueueImpl.java:108)
> at $PageRenderQueue_11d87265edc.render($PageRenderQueue_11d87265edc.java)
> at $PageRenderQueue_11d87265ed5.render($PageRenderQueue_11d87265ed5.java)
> at
> org.apache.tapestry5.services.TapestryModule$14.renderMarkup(TapestryModule.java:1128)
> at
> org.apache.tapestry5.services.TapestryModule$23.renderMarkup(TapestryModule.java:1472)
> at
> $MarkupRenderer_11d87265ede.renderMarkup($MarkupRenderer_11d87265ede.java)
> at
> org.apache.tapestry5.services.TapestryModule$22.renderMarkup(TapestryModule.java:1453)
> at
> $MarkupRenderer_11d87265ede.renderMarkup($MarkupRenderer_11d87265ede.java)
> at
> org.apache.tapestry5.services.TapestryModule$21.renderMarkup(TapestryModule.java:1435)
> at
> $MarkupRenderer_11d87265ede.renderMarkup($MarkupRenderer_11d87265ede.java)
> at
> org.apache.tapestry5.services.TapestryModule$20.renderMarkup(TapestryModule.java:1415)
> at
> $MarkupRenderer_11d87265ede.renderMarkup($MarkupRenderer_11d87265ede.java)
> at
> $MarkupRenderer_11d87265eda.renderMarkup($MarkupRenderer_11d87265eda.java)
> at
> org.apache.tapestry5.internal.services.PageMarkupRendererImpl.renderPageMarkup(PageMarkupRendererImpl.java:55)
> at
> $PageMarkupRenderer_11d87265ed8.renderPageMarkup($PageMarkupRenderer_11d87265ed8.java)
> at
> org.apache.tapestry5.internal.services.PageResponseRendererImpl.renderPageResponse(PageResponseRendererImpl.java:57)
> at
> $PageResponseRenderer_11d87265e68.renderPageResponse($PageResponseRenderer_11d87265e68.java)
> at
> org.apache.tapestry5.internal.services.PageRenderRequestHandlerImpl.handle(PageRenderRequestHandlerImpl.java:59)
> at
> org.apache.tapestry5.services.TapestryModule$28.handle(TapestryModule.java:1672)
> at
> $PageRenderRequestHandler_11d87265e69.handle($PageRenderRequestHandler_11d87265e69.java)
> at
> $PageRenderRequestHandler_11d87265e5d.handle($PageRenderRequestHandler_11d87265e5d.java)
> at
> org.apache.tapestry5.internal.services.PageRenderDispatcher.process(PageRenderDispatcher.java:97)
> at
> org.apache.tapestry5.internal.services.PageRenderDispatcher.dispatch(PageRenderDispatcher.java:83)
> at $Dispatcher_11d87265e64.dispatch($Dispatcher_11d87265e64.java)
> at $Dispatcher_11d87265e55.dispatch($Dispatcher_11d87265e55.java)
> at
> org.apache.tapestry5.services.TapestryModule$12.service(TapestryModule.java:938)
> at
> org.apache.tapestry5.internal.services.LocalizationFilter.service(LocalizationFilter.java:42)
> at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
> at
> org.apache.tapestry5.services.TapestryModule$2.service(TapestryModule.java:586)
> at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
> at
> org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:26)
> at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
> at
> org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:79)
> at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
> at
> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:93)
> at
> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:84)
> at
> org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:75)
> at
> org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:106)
> at $RequestHandler_11d87265e56.service($RequestHandler_11d87265e56.java)
> at $RequestHandler_11d87265e4e.service($RequestHandler_11d87265e4e.java)
> at
> org.apache.tapestry5.services.TapestryModule$11.service(TapestryModule.java:918)
> at
> org.apache.tapestry5.upload.internal.services.MultipartServletRequestFilter.service(MultipartServletRequestFilter.java:44)
> at
> $HttpServletRequestHandler_11d87265e4f.service($HttpServletRequestHandler_11d87265e4f.java)
> at
> org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62)
> at
> $HttpServletRequestFilter_11d87265e4d.service($HttpServletRequestFilter_11d87265e4d.java)
> at
> $HttpServletRequestHandler_11d87265e4f.service($HttpServletRequestHandler_11d87265e4f.java)
> at
> $HttpServletRequestHandler_11d87265e4b.service($HttpServletRequestHandler_11d87265e4b.java)
> at org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:168)
> 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:233)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
> at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
> at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
> at java.lang.Thread.run(Unknown Source)
> Caused by:
> org.apache.tapestry5.ioc.internal.util.TapestryException:
> xxx.xxxx.base.WeightedTag
> cannot be cast to xxx.xxxx.base.WeightedTag [at
> classpath:xxx/xxxx/components/TagCloud.tml, line 7, column 107]
> at
> org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:57)
> at
> org.apache.tapestry5.internal.structure.ExpansionPageElement.render(ExpansionPageElement.java:47)
> at
> org.apache.tapestry5.internal.services.RenderQueueImpl.run(RenderQueueImpl.java:68)
> ... 60 more
> Caused by: java.lang.ClassCastException: xxx.xxxx.base.WeightedTag cannot be
> cast to xxx.xxxx.base.WeightedTag
> at xxx.xxxx.components.TagCloud.getTags(TagCloud.java:65)
> at $PropertyConduit_11d87265ef2.get($PropertyConduit_11d87265ef2.java)
> at
> org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:53)
> ... 62 more
>
--
Howard M. Lewis Ship
Creator Apache Tapestry and Apache HiveMind
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