xml - Evaluating if an attribute value is parseable to a xs:int -

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background:

i trying perform query (using xquery 3.0) on attribute value (attrname) might either xs:string or xs:int, lets call $a.

if $a able parsed xs:int want compare against xs:int variable $v (<, <=, =, etc.). otherwise, if xs:string want perform different comparison.

xml example

<root>   <element attrname="1">this xs:int</element>   <element attrname="a">this xs:string</element> </root>

pseudo-code

if $a xs:int   else if $a xs:string   else

my issue:

i not able find proper way of evaluating if $a xs:int before performing operation.

you can use if ($a castable xs:int) expression1 else expression2.


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