Dirkk, thx for your answer.
I am really sorry, but definitively, I don't know how to use xquery:eval with the last release.
Following your advise, I tried the following one, but it does not work:
declare function local:eval_helper($exp, $args){ let $query := 'declare variable $xml external; $xml' let $vars := map { '$xml':= $args } return xquery:eval('$xml'||$exp,$vars) }; declare variable $test := <toto><tata>1</tata></toto>; local:eval_helper('//tata', $test)
Could you try yourself ? I mean, can you make the above user case working ? This use case worked fineley with BaseX7.8 beta 6aeaebf, before the external variable correction.
2014-02-01 Dirk Kirsten dk@basex.org:
Hi Jean-Marc,
external variables now have to be explicitly declared. You can do so by:
declare variable $xml external;Cheers, Dirk
On 01/02/14 09:16, jean-marc Mercier wrote:
Hi,
I am extensively using a function wrapping xquery:eval. My use case is roughly the following :
declare function local:eval_helper($exp, $args){xquery:eval('$xml'||$exp,map{'$xml' := $args})}; declare variable $test := <toto><tata>1</tata></toto>; local:eval_helper3('//tata', $test)
Since the following correction : [1] https://github.com/BaseXdb/basex/issues/833, the previous code raises
now a
[XPST0008] Undefined variable $xml.
I have tried several combinations to find a workaround, none are working
:
- declare function local:eval_helper($exp,
$args){xquery:eval(''||$exp,map{'' := $args})}; ([XPDY0050] Root of the context item must be a document node.).
- declare function local:eval_helper($exp,
$args){xquery:evaluate($arg||$exp)};
[XPTY0019] Steps within a path expression must yield nodes; xs:integer found. -- declare variable $xml external := "xml", : [XPST0008] Undefined
variable
$xml.
What is the correct workaround ?
Cheers
Jean-Marc
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