JBIDE-3033 is a start point for this issue. After collection all ambiguous cases - dialog with relation selection table should appear (seems next step for "Hibernate: add JPA annotations" dialog is suitable). Table columns:

Class & Association - not editable fields;
Type & Owner - editable fields with comboboxes;
for example from JBIDE-3033:

if we change Type and/or Owner for Person - Type and/or Owner for related Foto should be changed automatically.
after this should be possible preview changes.