Hello Ionel,
if finder's return type is a local interface then if the entity is not
found, FinderException is thrown.
If finder's return type is Collection or Set then if no entity is
found an empty Collection or Set is returned (w/o exception).
alex
Friday, July 25, 2003, 4:53:08 PM, Ionel
one short question regarding the return type Collection or Set..
I thought a finder always returns a Collection or atleast the default
finders. Or is there a way to make it return a Set. If yes, then is there a
performance gain between the two return types..and we extensivley use
iterators over
Hello Janardhan,
you're right, Set is not allowed as the return type for a finder.
Sorry for confusion.
alex
Monday, July 28, 2003, 10:47:14 AM, Janardhan Burugupalli wrote:
JB one short question regarding the return type Collection or Set..
JB I thought a finder always returns a Collection
Further clarification:
I thought that if you specify DISTINCT in the EJBQL query then the system
creates a Set underneath, but returns it as a Collection. This, of course,
is fine as Set extends/implements Collection.
Ciao,
Jonathan O'Connor
Development Manager
XCOM Dublin
Phone: +353 1 872 3305
Hi,
What happens if a finder doesn't find any beans matching its query ?
Does a FinderException is thrown or does a null value is returned ?
Thanks,
Ionel
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