I think I have found another corner case on the
https://hibernate.atlassian.net/browse/HHH-9798 regression.
The cited example is:
@OneToOne(fetch = FetchType.LAZY)
@JoinTable(
name = "ITEM_SHIPMENT", // Required!
joinColumns =
@JoinColumn(name = "SHIPMENT_ID"), // Defaults to ID
inverseJoinColumns =
@JoinColumn(name = "ITEM_ID", // Defaults to AUCTION_ID
nullable = false,
unique = true)
)
protected Item auction;
but an equally similar case ought to be:
@OneToOne(fetch = FetchType.LAZY)
@JoinTable(
name = "ITEM_SHIPMENT", // Required!
)
protected Item auction;
The rationale here is that a @JoinTable is used to “not have the null rows”
that would be present if a @JoinColumn was to be used on an
@OneToOne(optional=true). I cannot find in the spec where this is implied,
required, or excluded.
Otherwise one would have to say:
@OneToOne(fetch = FetchType.LAZY)
@JoinTable(
name = "ITEM_SHIPMENT", // Required!
inverseJoinColumns =
@JoinColumn(nullable = false,
unique = true)
)
protected Item auction;
Thoughts?
-Jason
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