Hey folks,
I got pretty frustrated in the meantime with cayenne, as i think there are
happing some pretty ugly thingsin cayenne's internals.
At first, I again need help on deleting objects with relationships.
Let's say I've got one table called "booking" with its entity Booking.
And I've got another table extras with entity Extras.
The relationship is from booking to Extras one to many (1-n entries in Extra
for one booking entry).
I've set both relationships with delete rule to nullify.
Now, sime pseudo-code:
Booking booking = ...;
List<Extras> extras = booking.getExtrasArray();
for (int i= 0;...)
{
booking.getDataContext().deleteObject(extras.get(i));
}
commitChanges();
Now, the data are deleted from the database.
But if I do a booking.getExtrasArray(); again, it still contains the deleted
objects; it seems as if they were cached or so :-/
Even an booking.RemoveFromExtras(extras.get(i)) won't work.
Hiow does the deletion work correctly? I really don't understand why cayenne
won't manage that automatically, for it would be quite logic to remove deleted
objects form the object graph.
Well, some words about the "ugly things": We had some really strange errors
coming up which are at the end quite logic, but do not help finding the problem
so wen spent about 3 hours to find it.
We deleted an entity in the modeler and recreated it. Unfortunately, there was
a reference missing. So cayenne just threw an index out of bounds exception. I
really don't understand such a behaviour either :/ To me, such kind of errors
should be handeled and analyzed automatically by a framework, e.g. like spring
does. Ok, that's it for now. Hope you still like me :-D
Tahnks a lot in advance & kind regards form Hamburg!
Jan
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