cayenne-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Robert Zeigler <robe...@puregumption.com>
Subject Re: various exceptions with cayenne 1.2RC2
Date Tue, 27 Jun 2006 15:00:45 GMT
Didn't get back to this last night, sorry. Ok, I sat down and wrote a
quick test to call the same code, external of tapestry.
The code outside of tapestry didn't result in a class cast exception.
Instead, it resulted in an ExpressionException (unable to evaluate
assignment.name).  Turns out that the assignment object doesn't have a
"name" property (it's "title"). The thing that seems odd here is that
the code throws no exceptions with M5 (I suspect this has to do with
removing BeanUtils as a dependency?).

Anyway... the lack of a ClassCastException says that something weird
must be happening in tapestry or my code somewhere. I'll keep looking. 
I don't define collection setters in the DO; neither my code nor
tapestry should be initializing the relationship, but I'll keep digging
to see what I can find.

Robert


Andrus Adamchik wrote:
>
>> 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.ensureCollectionValueHolderSet(AbstractCollectionProperty.java:159)
>>
>>
>>     *
>> org.objectstyle.cayenne.property.AbstractCollectionProperty.injectValueHolder(AbstractCollectionProperty.java:142)
>>
>>
>>     *
>> org.objectstyle.cayenne.property.BaseClassDescriptor.injectValueHolders(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.synchronizedObjectsFromDataRows(ObjectResolver.java:134)
>>
>>
>>     *
>> org.objectstyle.cayenne.access.DataDomainQueryAction.interceptObjectConversion(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
>>
>


Mime
View raw message