Question

So, we have many models with EntitySet<t> fields, and by default they all have associations like

[Association(PairTo = "Owner", OnTargetRemove = OnRemoveAction.Clear)]
[Field]
public EntitySet<RegFieldAuditLog> ChangedFields { get; set; }

and it seems to me, thats the proper default type for all Many-to-One fields.

I've seen none examples in real world when I needed Deny action on remove from EntitySet. Moreover, it makes me type more unneeded stuff in my code. Is it possible to make OnTargetRemove = OnRemoveAction.Clear to be the default action for this types of fields?

Accepted Answer

If the question is about your particular case, you can do this by implementing IModule.OnDefinitionsBuilt method. You should look for all the entity sets with this default and check the attribute there for the same value. If it isn't explicitly defined, change the value to your own default.

If the question is about DataObjects.Net default, I'm not so sure. I agree that most of entity sets are cleared with their owner's removal, but getting exception instead of implicit removal of items seems preferable (IMO, of course). At least, nothing unexpected will happen in this case.

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