I have a collection of objects mapped with an idbag:

<idbag name="permissions" table="t_publication_permission">
<collection-id column="id" type="long">
<generator class="sequence">
<param name="sequence">s_publication_permission_id</param>
</generator>
</collection-id>
<key column="publication" not-null="true" />
<many-to-many column="permission" class="uk.gov.ukti.bpb.domain.user.Permission" fetch="join" />
</idbag>

All is fine if I use a List:
private List<Permission> permissions;

If i change to Set, I get Xcps:
org.springframework.orm.hibernate3.HibernateSystemException:
IllegalArgumentException occurred while calling setter of uk.gov.ukti.bpb.domain.user.Publication.groups

So my inital question is, is it possible to map a Set using an idbag, or must it be a List ?



Matt

A <set> must be mapped to an ISet. A <bag> and <idbag> must be mapped to an IList. Similarly, a <map> must be mapped to an IDictionary. Mixing and matching is not supported.