[Objectbridge-developers] Object Bridge Newbie

[Charles A. <cha...@hp...>]

Hi All,

I'm beginning to play about using OJB with some of my own classes and
tables, and I seem to be getting some bizarre behaviour; it seems that
setting an attribute on a class tries to modify a different column on the
database than is specified in the mapping file. This only seems to happen on
an update, not on an insert.

It seems that the order of FieldDescriptors in the file is significant; and
possibly the id attribute of the FieldDesciptor.

I think perhaps I might be able to dig a little more out about whats going
on if I understood how OJB uses the mapping file; does it cross-reference
the column in the file with the field on the class by
a) name ?
b) position of the FieldDescriptor in the file with the position of the
field in the class (e.g. the first FieldDescriptor->first declared field in
the class) ?
c) id of the FieldDescriptor in the file with the position of the field in
the class (e.g. <FieldDescriptor id="1"> ->first declared field in the
class) ?
d) Something else ?

a) would seem to me to be the best way of doing it, but I don't think this
is the way it is done.

Any help would be welcomed,

With thanks,

Charles


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