I'll fix the ClassCastException, however real fix for prefetching over
flattened relationships will require more thought.
Andrus
> On Mar 15, 2004, at 21:32, Andrus Adamchik wrote:
>
>> This has been fixed in CVS and will be a part of March 16th nightly
>> build. I implemented an algorithm organizing all prefetch queries in a
>> dependency tree to properly connect prefetched objects with each
>> other.
>
> Thanks a lot! You have indeed fixed prefetch of multistep toMany
> relations.
>
> I think the fix introduced a bug. Or made a bug worse. As stated in bug
> CAY-15, prefetching over a flattened many to many does not work. I do
> not know if I should report this as a new bug, or append it to CAY-15.
>
> Adding a query.addPrefetch(String) over a flattended many to many used
> (before nightly 2004-3-16) to leed to a correct prefetch query. The
> problem was that the result from the prefetch query was not inserted
> into the graph. (I have some huge flattened many-to-many).
>
> After 2004-3-16 I get the following exception:
> Exception in thread "main" java.lang.ClassCastException
> at
> org.objectstyle.cayenne.access.util.SelectObserver.partitionBySource(Sel
> ectObserver.java:236)
> at
> org.objectstyle.cayenne.access.util.SelectObserver$PrefetchTreeNode.reso
> lveObjectTree(SelectObserver.java:403)
> at
> org.objectstyle.cayenne.access.util.SelectObserver$PrefetchTreeNode.reso
> lveObjectTree(SelectObserver.java:375)
> at
> org.objectstyle.cayenne.access.util.SelectObserver.getResultsAsObjects(S
> electObserver.java:187)
> at
> org.objectstyle.cayenne.access.DataContext.performQuery(DataContext.java
> :1200)
>
> Regards,
> - Tore.
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