Frank Schönheit - Sun Microsystems Germany wrote:
Hi Stephan,
In many languages and language implementations, exceptions are
considered a mechanism for error recovery and using them incurs
noticeable performance overhead. Therefore, I think it is useful to
limit exceptions to error recovery in UNO, too.
Hmm. I take this as a VetoException to my original design ...
So if I want to transport more information than just a boolean
"accepted/vetoed" flag from the listeners to the broadcaster, what would
be the best way?
A complex return type? A complex type as output parameter, with a
boolean return type?
Out-parameters are frowned upon in UNO circles (because they have
awkward to use mappings in languages like Java), so the best solution
seems a complex return type---com.sun.star.beans.Optional might be handy
here.
Thanks & Ciao
Frank
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