[Exist-open] [ERROR cannot convert xs:boolean('true') to a node set] Something to be aware of if you are updating to lastest RC.

[Casey J. <cas...@jo...>]

Since the query processor has gotten stricter with the new update I have
ran into a few things which don't work anymore. One of which produces this
somewhat cryptic message:

ERROR cannot convert xs:boolean('true') to a node set

Which I know can be caused by a number of things, but in my case it was
this code:

let $resolved-additional-atts := for $att-ref in $attUses[*not(@default or
@required="true")*]
                    return $att-ref/@ref

Specifically: *not(@default or @required="true")*

It was very hard to find because the processor did not report the error on
the correct line, instead it reported it several functions up in the
execution stack. I had to walk through the xquery with log pushes to find
the problem.

To fix it, I simply changed the statement to a different equivalent boolean
logic: *not(@default) and not(@required="true")*

I'm sure there is a good reason for this, but the obscurity was pretty
irritating. Hopefully I can help someone that finds themselves in a similar
problem.


Cheers,
Casey

--
Casey Jordan
easyDITA a product of Jorsek LLC
"CaseyDJordan" on LinkedIn, Twitter & Facebook
(585) 348 7399
easydita.com


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