On Nov 1, 2004, at 13:54, Tore Halset wrote:
> Hello.
>
> I am having a strange problem with tapestry and some cayenne objects
> that some of you might be able to help me with. I mailed the tapestry
> list about the same problem in june. See attached message.
>
> I have a realy simple Page called VesselDownloadReport. It has a
> tapestry Insert component that looks like this:
> <span jwcid=..nsert" value="ognl:currentVessel.name"/>
The problem is in the ".name" part of this component. The problem does
not go away if I switch "name" with any other cayenne attributes for
the Vessel.
- Tore.
>
> I have a method in VesselDownloadReport.java named getCurrentVessel()
> that returns a Vessel object. The Vessel object is a cayenne object.
> In its parrent, _Vessel, there are the usual methods for
> setName(String) and getName().
>
> Rendering the page leads to the errormessage in this screenshot:
> http://www.pvv.ntnu.no/~halset/tmp/propertydescriptor.png and in the
> attached message.
>
> Howard M. Lewis Ship (tapestry guru) answered "Perhaps you are
> overriding a property provided by a super class", but I have not done
> so.
>
> Regards,
> - Tore.
>
> Begin forwarded message:
>
>> From: Tore Halset <halse..vv.ntnu.no>
>> Date: June 17, 2004 12:58:23 CEST
>> To: "Tapestry users" <tapestry-use..akarta.apache.org>
>> Subject: Re: Internal error while merging PDs?
>> Reply-To: "Tapestry users" <tapestry-use..akarta.apache.org>
>>
>> On Jun 11, 2004, at 18:23, Jamis Buck wrote:
>>
>>> Here's a new one (for me, anyway). I'm now getting the following
>>> error when I run my Tapestry app:
>>>
>>> PropertyDescriptor: internal error while merging PDs: type
>>> mismatch between read and write methods
>>>
>>> Has anyone else seen this? It doesn't say which methods are causing
>>> the problem, or even which object. I've looked at all of my property
>>> accessors (on all of my pages and components) and they all seem to
>>> have consistent types. I'm not sure where else to look.
>>
>> I am getting the same error. The page is realy simple and I have not
>> found a set/get combination with different types. I am using
>> tapestry-3.0 with ognl-2.6.3. Upgrading ognl to 2.6.5 did not fix the
>> problem. Here is the stacktrace:
>>
>> PropertyDescriptor: internal error while merging PDs: type mismatch
>> between read and write methods
>>
>> Stack Trace:
>>
>> • java.beans.PropertyDescriptor.<init>(PropertyDescriptor.java:343)
>> •
>> java.beans.Introspector.processPropertyDescriptors(Introspector.java:
>> 649)
>> •
>> java.beans.Introspector.getTargetPropertyInfo(Introspector.java:572)
>> • java.beans.Introspector.getBeanInfo(Introspector.java:372)
>> • java.beans.Introspector.getBeanInfo(Introspector.java:144)
>> • ognl.OgnlRuntime.getPropertyDescriptors(OgnlRuntime.java:1253)
>> • ognl.OgnlRuntime.getPropertyDescriptor(OgnlRuntime.java:1272)
>> • ognl.OgnlRuntime.getIndexedPropertyType(OgnlRuntime.java:1474)
>> • ognl.ASTProperty.getIndexedPropertyType(ASTProperty.java:79)
>> • ognl.ASTChain.getValueBody(ASTChain.java:63)
>> • ognl.SimpleNode.getValue(SimpleNode.java:192)
>> • ognl.Ognl.getValue(Ognl.java:335)
>> • ognl.Ognl.getValue(Ognl.java:310)
>> •
>> org.apache.tapestry.binding.ExpressionBinding.resolveProperty(Expressi
>> onBinding.java:201)
>> •
>> org.apache.tapestry.binding.ExpressionBinding.getObject(ExpressionBind
>> ing.java:194)
>> •
>> org.apache.tapestry.binding.AbstractBinding.getObject(AbstractBinding.
>> java:208)
>> •
>> org.apache.tapestry.param.AbstractParameterConnector.getBindingValue(A
>> bstractParameterConnector.java:105)
>> •
>> org.apache.tapestry.param.ObjectParameterConnector.setParameter(Object
>> ParameterConnector.java:53)
>> •
>> org.apache.tapestry.param.ParameterManager.setParameters(ParameterMana
>> ger.java:105)
>> •
>> org.apache.tapestry.AbstractComponent.prepareForRender(AbstractCompone
>> nt.java:898)
>> •
>> org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:
>> 853)
>> •
>> org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.jav
>> a:624)
>> •
>> org.apache.tapestry.components.Foreach.renderComponent(Foreach.java:
>> 122)
>> •
>> org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:
>> 857)
>> •
>> org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.jav
>> a:624)
>> •
>> org.apache.tapestry.components.RenderBody.renderComponent(RenderBody.j
>> ava:45)
>> •
>> org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:
>> 857)
>> •
>> org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.jav
>> a:624)
>> • org.apache.tapestry.html.Body.renderComponent(Body.java:269)
>> •
>> org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:
>> 857)
>> •
>> org.apache.tapestry.AbstractComponent.renderBody(AbstractComponent.jav
>> a:624)
>> • org.apache.tapestry.html.Shell.renderComponent(Shell.java:123)
>> •
>> org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:
>> 857)
>> •
>> org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:
>> 118)
>> •
>> org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:
>> 857)
>> •
>> org.apache.tapestry.BaseComponent.renderComponent(BaseComponent.java:
>> 118)
>> •
>> org.apache.tapestry.AbstractComponent.render(AbstractComponent.java:
>> 857)
>> •
>> org.apache.tapestry.AbstractPage.renderPage(AbstractPage.java:300)
>> •
>> org.apache.tapestry.engine.RequestCycle.renderPage(RequestCycle.java:
>> 371)
>> •
>> org.apache.tapestry.engine.AbstractEngine.renderResponse(AbstractEngin
>> e.java:732)
>> •
>> org.apache.tapestry.engine.DirectService.service(DirectService.java:
>> 174)
>> •
>> org.apache.tapestry.engine.AbstractEngine.service(AbstractEngine.java:
>> 872)
>> •
>> org.apache.tapestry.ApplicationServlet.doService(ApplicationServlet.ja
>> va:197)
>> •
>> org.apache.tapestry.ApplicationServlet.doPost(ApplicationServlet.java:
>> 326)
>> • javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
>> • javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
>>
>> Regards,
>> - Tore.
>>
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