Re: [wsbpel] wsbpel 3/31/2006: propertyAlias and Return of MultipleNodes

[Monica J Martin <Monica.Martin@Sun.COM>]

> mm1: In the F2F when we discussed query and expressions, we touched on 
> the application of the XPATH in the propertyAlias to the variable 
> value and what happens if this results in a response that contains 
> anything other than exactly one information item and/or a collection 
> of CII, i.e. a bpel:selectionFailure fault MUST be thrown in the 
> context of <copy> operation.  I believe the text was rewritten in 
> Section 8 although at the time we suggested deletion.  Part of the 
> reason for the rewording or deletion was because: In queries, is it 
> acceptable to return multiple nodes with this function and the 
> selections are filtered in the expression and end up with one node.
> I don't see that we have specifically provide such a hint later in 
> Section 8.2.6 as suggested. Is there still a need to do so? (Note: The 
> text provided are brief notes, not proposed specification language if 
> appropriate). Thanks. 

mm2: In looking further I see the propertyAlias reference is in Section 
9.2. Do we still need the hint?  Is there any reason to still consider 
why we originally wished to delete this text in the F2F and that is 
still relevant. Thanks.

Reference: 
http://www.oasis-open.org/apps/org/workgroup/wsbpel/download.php/17462/reviewOfChapter9.rev1.5.doc