At the end of
http://www.playframework.org/documentation/1.0.3/crud
one can read:
Limitation
The crud module will show the relations that are unidirectional in one
entity: the one that does not have the mappedBy attribute.
What is the limitation? Probably you meant "will not show" instead of
"will show"? Even if that's the case, I've just tried the CRUD module
on an entity which has a 1-1 relationship defined by
@OneToOne(cascade=CascadeType.ALL) only i.e. without the mappedBy
attribute and it still works.