In poking around, I saw a place where if something was
transient, an ArrayList was returned... but I can't find it again
at the
moment; I'll look later tonight when I have a bit of time and see if I
can find it again.
Let us know if you find those - this shouldn't happen in DataObjects.
The code below looks clean, so the cause is somewhere else. Is it
possible that Tapestry or the user code initializes the relationship
list on its own? Do you define collection setters in your DO's
(Cayenne does not by default)?
Andrus
On Jun 27, 2006, at 2:54 AM, Robert Zeigler wrote:
Hi all,
Way back when 1.2B1 was released, I reported a weird fault resolving
exception. I didn't have time then to look into it further. I just
tried
out cayenne 1.2RC2 and am still seeing the same weird behavior (maybe
I'm doing something weird. ;). I do have time now to look into it
further, but am getting stuck before I can get started by a
separate issue.
My code:
public List getTransactionsForCourse(Course course) {
List ret = this.getAssignmentTransactions();
ret =
ExpressionFactory.matchExp("assignment.course.name",course.getName
()).filterObjects(ret);
List orderings = new ArrayList();
orderings.add(new Ordering("assignment.name",true));
orderings.add(new Ordering("scoreAsFloat",false));
Ordering.orderList(ret,orderings);
return ret;
}
assignmentTransactions is a one to many relationship.
Calling said code is resulting in the following exception:
*
org.objectstyle.cayenne.property.AbstractCollectionProperty.ensureColl
ectionValueHolderSet(AbstractCollectionProperty.java:159)
*
org.objectstyle.cayenne.property.AbstractCollectionProperty.injectValu
eHolder(AbstractCollectionProperty.java:142)
*
org.objectstyle.cayenne.property.BaseClassDescriptor.injectValueHolder
s(BaseClassDescriptor.java:218)
* org.objectstyle.cayenne.access.DataContext.localObject
(DataContext.java:1924)
*
org.objectstyle.cayenne.access.ObjectResolver.objectFromDataRow
(ObjectResolver.java:237)
*
org.objectstyle.cayenne.access.ObjectResolver.objectsFromDataRows
(ObjectResolver.java:155)
*
org.objectstyle.cayenne.access.ObjectResolver.synchronizedObjectsFromD
ataRows(ObjectResolver.java:134)
*
org.objectstyle.cayenne.access.DataDomainQueryAction.interceptObjectCo
nversion(DataDomainQueryAction.java:373)
* org.objectstyle.cayenne.access.DataDomainQueryAction.execute
(DataDomainQueryAction.java:151)
* org.objectstyle.cayenne.access.DataDomain.onQuery
(DataDomain.java:766)
* org.objectstyle.cayenne.util.ObjectContextQueryAction.runQuery
(ObjectContextQueryAction.java:253)
* org.objectstyle.cayenne.access.DataContextQueryAction.execute
(DataContextQueryAction.java:90)
* org.objectstyle.cayenne.access.DataContext.onQuery
(DataContext.java:1422)
* org.objectstyle.cayenne.access.DataContext.performQuery
(DataContext.java:1411)
* org.objectstyle.cayenne.access.ToManyList.resolvedObjectList
(ToManyList.java:343)
* org.objectstyle.cayenne.access.ToManyList.size
(ToManyList.java:296)
* org.objectstyle.cayenne.exp.Expression.filterObjects
(Expression.java:458)
* org.eledge.domain.User.getTransactionsForCourse(User.java:92)
* org.eledge.domain.User.getGradebookGradedResponses(User.java:
197)
* org.eledge.domain.User.getGradedGradebookGradedResponses
(User.java:192)
* org.eledge.domain.User.getHasGradedGradebookGradedResponses
(User.java:188)
* sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
* sun.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.java:39)
* sun.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAccessorImpl.java:25)
* java.lang.reflect.Method.invoke(Method.java:585)
* ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:491)
* ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:785)
* ognl.ObjectMethodAccessor.callMethod
(ObjectMethodAccessor.java:61)
* ognl.OgnlRuntime.callMethod(OgnlRuntime.java:819)
* ognl.ASTMethod.getValueBody(ASTMethod.java:75)
* 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.binding.ExpressionBinding.resolveProperty
(ExpressionBinding.java:201)
* org.apache.tapestry.binding.ExpressionBinding.getObject
(ExpressionBinding.java:194)
* org.apache.tapestry.binding.AbstractBinding.getBoolean
(AbstractBinding.java:77)
*
org.apache.tapestry.param.BooleanParameterConnector.setParameter
(BooleanParameterConnector.java:51)
* org.apache.tapestry.param.ParameterManager.setParameters
(ParameterManager.java:105)
* org.apache.tapestry.AbstractComponent.prepareForRender
(AbstractComponent.java:898)
* org.apache.tapestry.AbstractComponent.render
(AbstractComponent.java:853)
* org.apache.tapestry.AbstractComponent.renderBody
(AbstractComponent.java:624)
* org.apache.tapestry.components.RenderBody.renderComponent
(RenderBody.java:45)
* org.apache.tapestry.AbstractComponent.render
(AbstractComponent.java:857)
* org.apache.tapestry.AbstractComponent.renderBody
(AbstractComponent.java:624)
* org.apache.tapestry.components.RenderBody.renderComponent
(RenderBody.java:45)
* org.apache.tapestry.AbstractComponent.render
(AbstractComponent.java:857)
* org.apache.tapestry.AbstractComponent.renderBody
(AbstractComponent.java:624)
* org.apache.tapestry.html.Body.renderComponent(Body.java:269)
* org.apache.tapestry.AbstractComponent.render
(AbstractComponent.java:857)
* org.apache.tapestry.AbstractComponent.renderBody
(AbstractComponent.java:624)
* org.apache.tapestry.components.RenderBody.renderComponent
(RenderBody.java:45)
* org.apache.tapestry.AbstractComponent.render
(AbstractComponent.java:857)
* org.apache.tapestry.AbstractComponent.renderBody
(AbstractComponent.java:624)
* org.apache.tapestry.html.Shell.renderComponent(Shell.java:124)
* 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.AbstractComponent.renderBody
(AbstractComponent.java:624)
* org.mb.tapestry.base.IfBean.renderComponent(IfBean.java:83)
* 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:368)
* org.apache.tapestry.engine.AbstractEngine.renderResponse
(AbstractEngine.java:749)
* org.apache.tapestry.engine.PageService.service
(PageService.java:77)
* org.apache.tapestry.engine.AbstractEngine.service
(AbstractEngine.java:889)
* org.eledge.EledgeEngine.service(EledgeEngine.java:60)
* org.apache.tapestry.ApplicationServlet.doService
(ApplicationServlet.java:198)
* org.apache.tapestry.ApplicationServlet.doGet
(ApplicationServlet.java:159)
* javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
* javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
* org.mortbay.jetty.servlet.ServletHolder.handle
(ServletHolder.java:428)
* org.mortbay.jetty.servlet.WebApplicationHandler
$CachedChain.doFilter(WebApplicationHandler.java:830)
* org.eledge.OldEledgePagesFilter.doFilter
(OldEledgePagesFilter.java:64)
* org.mortbay.jetty.servlet.WebApplicationHandler
$CachedChain.doFilter(WebApplicationHandler.java:821)
* org.mortbay.jetty.servlet.WebApplicationHandler.dispatch
(WebApplicationHandler.java:471)
* org.mortbay.jetty.servlet.ServletHandler.handle
(ServletHandler.java:568)
* org.mortbay.http.HttpContext.handle(HttpContext.java:1530)
* org.mortbay.jetty.servlet.WebApplicationContext.handle
(WebApplicationContext.java:633)
* org.mortbay.http.HttpContext.handle(HttpContext.java:1482)
* org.mortbay.http.HttpServer.service(HttpServer.java:909)
* org.mortbay.http.HttpConnection.service(HttpConnection.java:816)
* org.mortbay.http.HttpConnection.handleNext
(HttpConnection.java:982)
* org.mortbay.http.HttpConnection.handle(HttpConnection.java:833)
* org.mortbay.http.SocketListener.handleConnection
(SocketListener.java:244)
* org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)
* org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)
This is a tapestry (3.0.3) webapp, running with the JettyLauncher.
I've
done a clean recompile, but no good. I dug into the code, and it looks
like ensureCollectionValueHolderSet is trying to cast an ArrayList
as a
ValueHolder. In poking around, I saw a place where if something was
transient, an ArrayList was returned... but I can't find it again
at the
moment; I'll look later tonight when I have a bit of time and see if I
can find it again. Anyway... thoughts? Cayenne bug? Something I've
screwed up?
Robert
