Problem updating a date field via UnitOfWork - TopLink 9.0.3

Hello,
we want to change an exisiting application that employs TopLink 9.0.3, Build 423.
The data is stored in an Oracle 9.2.0.6.
The specific table has a composite primary key consisting of four fields.
I can easily create a new Object (foo)
uow.registerNewObject(foo)
uow.commit()
and see the results in the database.
If I obtain an exising Object (bar) and change an integer
bar = (Bar) Session.readObject(Bar.class, expr);
cloneBar = (Bar) uow.registerObject(bar);
cloneBar.setSomething(42);
uow.commit()
everything is fine.
But if I dare to change a Date field
cloneBar.setSomethingElse(cal.getTime());
then
uow.hasChanges()
returns true
but the update does not happen. It is neither logged nor is the data changed in the database.
Is this a known bug?
What have I done wrong?
How can I avoid using hard-coded SQL to update my Bar object?
Bye,
Stephan

Hello,
it is very disturbing, but I finally found the reason for this problem.
After decompiling the Project class file (we have no source code of this third-party library), I saw that the mapping for this specific field is set to "readOnly".
I did not know that TopLink is able to have specific fields "readOnly" and others "readWrite", but it can handle this!
So it seems that the behaviour is not a bug but a feature :-(
We can change the mapping before creating the session, with the result that the field is updatable.
Have a nice day.

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Message was edited by:
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