Hi,
Class A, has one attribute like the following :
@ManyToOne(optional = true, cascade = CascadeType.ALL)
@JoinColumn(name = "B_ID")
private B b = null;
Not surprisingly, this is producing, in the table A, a column like the
following :
B_ID bigint(20) Yes NULL
Note that the column is nullable.
If I switch optional to false :
@ManyToOne(optional = false, cascade = CascadeType.ALL)
The generated column is still nullable.
Any idea why ? I was waiting for not null join column in the database.
Despite that, it's all working fine 100%.
In case of a search on A, if optional = false, only A that has B are taken by
the request.
If I switch back optional to true, all A (with ot without B) are taken into
account.
So, it look like it works fine but why the column is nullable when optional =
false ?
Using OpenJPA 2 with MySQL.
Thanks !
