[jboss-user] [EJB 3.0] - Re: Hibernate3: Cannot simultaneously fetch multiple bags
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Mon May 14 06:44:15 EDT 2007
The "problem" comes from the following code:
| private Collection<Role> roles = new ArrayList<Role>();
| private Collection<Group> groups = new ArrayList<Group>();
A Collection is treated as a "bag". You have have some possibilities to fix it.
An easy solution is to use the @CollectionID. Another solution would be to change them to List<> and then use the @IndexColum, and the final solution is to change the to Set<>. You must read up on Hibernate Collection mapping first, to see whats suits your data model best.
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