No. Fetch specs work directly against the database, so if the column
doesn't exist (as with derived attributes), it can't work. You would
have to do a fetch on a superset, then use an in-memory qualifier to
include your derived attribute.
Ken
On Apr 16, 2007, at 10:45 AM, Catarina Vieira Simoes wrote:
Hi!
Is it possible to do a FetchSpecification over derived attributes?
I tried and I got the error:
java.lang.IllegalStateException: sqlStringForAttribute: attempt to
generate SQL for attribute 'attributeName' on entity 'EntityName'
with undefined column name. You must define a column name for this
attribute before attempting a database operation.
Since the derived attribute doesn't have a real column it should
work, no? :)
Thank you in advance.
Sincerely,
Catarina
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