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From Paul Logasa Bogen II <...@tamu.edu>
Subject Re: Problem commiting changes back to database
Date Wed, 04 Mar 2009 22:43:02 GMT
Thanks, it looks like the map file being used by my program was out of 
date. *facepalm*

plb

Michael Gentry wrote:
> It looks like it might be a mapping error somewhere in your model:
>
>   java.lang.ClassCastException:
>   org.apache.cayenne.reflect.generic.DataObjectToOneProperty cannot be
>   cast to org.apache.cayenne.reflect.ToManyMapProperty at
>
> Double-check to make sure you don't have a to-one/to-many mapping error.
>
> Also, version 3 of Cayenne should be fairly stable for the "Cayenne
> Classic" stuff (non-JPA).
>
>
> On Wed, Mar 4, 2009 at 11:20 AM, Paul Logasa Bogen II <plb@tamu.edu> wrote:
>   
>> I hate to write such a vague message but after googling for a day I don't
>> seem to be getting anywhere debugging an exception I'm getting when I try
>> commit changes to a CayenneDataObject back to the database using Cayenne 3.
>>
>> Here is the line of my code where the exception occurs under:
>>
>> this.ctxt.commitChanges();
>>
>> ctxt is my DataContext which is defined further up in the class like this:
>>
>> private DataContext ctxt = DataContext.createDataContext(true);
>>
>> Here is the exception itself:
>>
>>   Root cause:
>>
>>   java.lang.ClassCastException:
>>   org.apache.cayenne.reflect.generic.DataObjectToOneProperty cannot be
>>   cast to org.apache.cayenne.reflect.ToManyMapProperty at
>>
>> org.apache.cayenne.access.DataDomainSyncBucket.postprocess(DataDomainSyncBucket.java:242)
>>   at
>>
>> org.apache.cayenne.access.DataDomainFlushAction.postprocess(DataDomainFlushAction.java:241)
>>   at
>>
>> org.apache.cayenne.access.DataDomainFlushAction.flush(DataDomainFlushAction.java:149)
>>   at
>>   org.apache.cayenne.access.DataDomain.onSyncFlush(DataDomain.java:820)
>>   at
>>   org.apache.cayenne.access.DataDomain$2.transform(DataDomain.java:787)
>>   at
>>   org.apache.cayenne.access.DataDomain.runInTransaction(DataDomain.java:846)
>>   at org.apache.cayenne.access.DataDomain.onSync(DataDomain.java:784)
>>   at
>>   org.apache.cayenne.access.DataContext.flushToParent(DataContext.java:1171)
>>   at
>>   org.apache.cayenne.access.DataContext.commitChanges(DataContext.java:1073)
>>   at edu.tamu.csdl.dcm.util.Store.commit(Store.java:173) at
>>   edu.tamu.csdl.dcm.ui.actions.SaveAction.onClick(SaveAction.java:32)
>>   at
>>
>> org.wicketstuff.yui.markup.html.menu2.YuiMenuItem$1.onClick(YuiMenuItem.java:31)
>>   at
>>
>> org.apache.wicket.ajax.markup.html.AjaxFallbackLink$1.onEvent(AjaxFallbackLink.java:73)
>>   at
>>
>> org.apache.wicket.ajax.AjaxEventBehavior.respond(AjaxEventBehavior.java:166)
>>   at
>>
>> org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:299)
>>   at
>>
>> org.apache.wicket.request.target.component.listener.BehaviorRequestTarget.processEvents(BehaviorRequestTarget.java:105)
>>   at
>>
>> org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:92)
>>   at
>>
>> org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1192)
>>   at org.apache.wicket.RequestCycle.step(RequestCycle.java:1271) at
>>   org.apache.wicket.RequestCycle.steps(RequestCycle.java:1370) at
>>   org.apache.wicket.RequestCycle.request(RequestCycle.java:501) at
>>   org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:455)
>>   at
>>
>> org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:288)
>>   at
>>
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
>>   at
>>
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
>>   at
>>
>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
>>   at
>>
>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
>>   at
>>
>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
>>   at
>>
>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
>>   at
>>
>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
>>   at
>>
>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
>>   at
>>   org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)
>>   at
>>
>> org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
>>   at
>>
>> org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
>>   at
>>
>> org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
>>   at
>>
>> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
>>   at java.lang.Thread.run(Thread.java:619)
>>
>>   Complete stack:
>>
>>   org.apache.cayenne.CayenneRuntimeException: [v.3.0M5 Dec 09 2008
>>   01:43:15] Commit Exception at
>>   org.apache.cayenne.access.DataContext.flushToParent(DataContext.java:1199)
>>   at
>>   org.apache.cayenne.access.DataContext.commitChanges(DataContext.java:1073)
>>   at edu.tamu.csdl.dcm.util.Store.commit(Store.java:173) at
>>   edu.tamu.csdl.dcm.ui.actions.SaveAction.onClick(SaveAction.java:32)
>>   at
>>
>> org.wicketstuff.yui.markup.html.menu2.YuiMenuItem$1.onClick(YuiMenuItem.java:31)
>>   at
>>
>> org.apache.wicket.ajax.markup.html.AjaxFallbackLink$1.onEvent(AjaxFallbackLink.java:73)
>>   at
>>
>> org.apache.wicket.ajax.AjaxEventBehavior.respond(AjaxEventBehavior.java:166)
>>   at
>>
>> org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:299)
>>   at
>>
>> org.apache.wicket.request.target.component.listener.BehaviorRequestTarget.processEvents(BehaviorRequestTarget.java:105)
>>   at
>>
>> org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:92)
>>   at
>>
>> org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1192)
>>   at org.apache.wicket.RequestCycle.step(RequestCycle.java:1271) at
>>   org.apache.wicket.RequestCycle.steps(RequestCycle.java:1370) at
>>   org.apache.wicket.RequestCycle.request(RequestCycle.java:501) at
>>   org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:455)
>>
>>
>> If someone has an idea or if ya'll want to see more. Just let me know. Of
>> course if using version 3 now is just daft let me know that too. :-P
>>
>> plb
>>
>>
>>     


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