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https://issues.apache.org/jira/browse/IBATIS-352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12462324
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Donovan Frew commented on IBATIS-352:
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Thanks Paul. I tried your solution and it worked like a charm. I had figured
that I was approaching it incorrectly. I guess these discussions will help to
improve the documentation.
> Problems with Complex Properties + Sets & enums
> -----------------------------------------------
>
> Key: IBATIS-352
> URL: https://issues.apache.org/jira/browse/IBATIS-352
> Project: iBatis for Java
> Issue Type: Bug
> Components: SQL Maps
> Affects Versions: 2.2.0
> Environment: JDK 1.5, IBATIS SQL Maps 2.2.0.638, Spring 2.0
> Reporter: Andrew Bethell
> Attachments: domain.zip, join-resultmap with enum.txt, lazy-load with
> set.txt, sqlmap.zip
>
>
> There doesnt seem to be support for lazy-loading complex properties of type
> 'java.util.Set', only List collections - (stack trace attached to this
> issue).
> I have to use Set collections at the moment, as when I upgraded from IBATIS
> SQLMaps 2.17 to 2.22, the 'groupBy' attribute for resultmaps did not seem to
> make data in (List) complex properties distinct by ID, where as in version
> 2.17 this was the case.
> Strangely though, when loading complex properties with joins+resultMaps, Set
> properties work correctly - except when items in the Set contain enum types
> (stack trace attached for this too).
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