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Mohamed El WakilSubject: SequenceType matching failed" error
Author: Mohamed El Wakil
Date: 27 Jul 2004 12:48 AM
The below XQuery (targeting XMI V1.1) file gives me the "SequenceType matching failed" error. Why?

declare namespace UML = "org.omg.xmi.namespace.UML" ;

declare function local:GetParentIDByID($cls_id)

declare function local:GetAnsc($cls_id,$chs)
if ($cls_id = ()) then $chs else
for $r in $cls_id
let $j := local:GetParentIDByID($r)
let $chn := $chs | $j
return $chn | local:GetAnsc($j,$chn )

declare function local:DIT($cls_id) {count(local:GetAnsc($cls_id,()))+1};


Alberto MassariSubject: Re: SequenceType matching failed" error
Author: Alberto Massari
Date: 27 Jul 2004 10:28 AM
Hi Mohamed,
thanks for the report; the error you get is indeed caused by a bug in our
processor (it assumes that the default type of a parameter in a
user-defined function is item() instead of item()*, so you get an error
when you pass the empty sequence value).

The fix for this bug will be in the next update of Stylus; in the
meanwhile, you can work around it by changing the definitions of the two
functions to be

declare function local:GetParentIDByID($cls_id as item()*)


declare function local:GetAnsc($cls_id as item()*,$chs as item()*)

Thanks again for the report,

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