various exceptions with cayenne 1.2RC2

From: Robert Zeigler (robert..uregumption.com)
Date: Mon Jun 26 2006 - 18:54:15 EDT

  • Next message: Andrus Adamchik: "Re: various exceptions with cayenne 1.2RC2"

    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



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