[jboss-user] [EJB 3.0] - Re: Query

[andydale]

Hi,

The are a few ways that the multiple bag exception can be avoided.  

You mentioned using a Set instead, this would solve the problem but it has the restriction that it can only contain distinct values so you need to consider if they will work for you.

Another solution would be to use Lists, but i would personally never do this as i have experienced lots of problems (like them missing out the join table they create in queries) with Bi-Directional indexed relationships (using a list to map a oneToMany)

The thrid solution could be to keep using collections, but also annotate with @CollectionId, i have not used this yet, but i reckon it could also run into problems with bi-directional relationships.

Andy

View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4009555#4009555

Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4009555