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Home » Boards » Stylus Studio Developer Network » XQuery Help and Discussion » SequenceType matching failed" error
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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($cls_id)
{//XMI/XMI.content/UML:Model/UML:Namespace.ownedElement//UML:Generalization/UML:Generalization.child/UML:Class[@xmi.idref=$cls_id]/../../UML:Generalization.parent/UML:Class/@xmi.idref};

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};

local:DIT("sm$1dafb4e:fba056efa2:-7efd")

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(Deleted User) Subject: Re: SequenceType matching failed" error
Author: (Deleted User)
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()*)

and

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

Thanks again for the report,
Alberto


   
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