Hello, I'm new to hibernate and there's a behavior I don't undersand:

I have 2 tables linked by a one-to-one association.

For a test purpose, I do a hql query in a servlet to select on record from the parent table.
In the child table, there is no correspondant record for the particular parent table record.

So the sql query generated by hibernate returns correctly a classic outer join with one record from the parent table outer joined with a null record from the child table. This is ok.

But what I don't understand is that in my java servlet that does the query, I got the following message "No row with the given identifier exists: xxx, of class: child table"

But the hql query I made in the servlet, concerns just the parent table, but because of the one-to-one association, hibernate generates the outer join with the child table.

So why does the java resultset not return a row whereas the sql outer joint returns well a record ?

I hope I'm clear !!!

Olivier Steinberg

Thank's for help.

Just an idea, have you tried using the $ syntax in your mapping documents, like de.blabla.A$B where B is your inner class, and A your outer? This may work, but maybe just for static inner classes, I don't think for normal inner classes.

I don't really think Hibernate can persist normal inner classes, on retrieval, the link to the parent would have to be created somehow, and I don't think this is possible ... but maybe Hibernate surprises me once more ;) Does someone else know something about this?

Oh sorry, this went to the wrong thread ... arrrgh. Better go to bed

There is probably a not-null="true" or something in your mapping that force Hibernate to expect the corresponding child. Wo mapping it's hard to tell