Read only derived atribute

Hi,
Is it possible to have a read only derived attribute with toplink? For instance the attribute managerName on the employee would be populated by a pl/sql function.
The generated SQL would have to look like this
EMPNO, JOB, COMM, MGR, SAL, HIREDATE, ENAME, DEPTNO,
manager_api.get_managerName(EMPNO) MANAGER_NAME
FROM EMP
Would I be able to build something like this by extending DirectToFieldMapping or is it not meant to be used that way?
I don't want to use custom select SQL because then ExpressionBuilder won't work anymore.
Thank you,
Calin Medianu

I thought of that, but can not do it. I am generating my mappings from a legacy repository that looks very much like an oracle designer repository + a lot of other metadata. I'd rather not create a view because then I have to generate views + insteadof triggers for all my tables and cannot do that for some non-technical reasons.
I'm not necessarily looking for an easy solution, I kind of need to get it right. In my case the requirement is to populate the attribute from a pl/sql function that I call with the PK of the current row as an argument.
I solved this by using a converter that converts that PK column to a QueryBasedValueHolder, then my program works but uses lazy fetching (which I don't want) and I could not get it to use bind variables (which annoys the DBA). I wrote about this in here populating attribute from result of pl_sql function another limitation of this solution is that I can not use more that one column as input to the pl/sql function, which would be a nice thing to have.
Thanks a lot for taking the time to respond.
Calin

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KGelling wrote:
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Generally when creating a Word file from either a Mac or Win7 pc and opening it on two different machines (either one first) it always prompts that the file is open and will be opened as read only. However opening a CSS file does not prompt that it is alr

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Finally I think I have found the problem.
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