Re: [xsl] question on filtering a one-to-many relationship

[Michael Kay <mike@xxxxxxxxxxxx>]

On 06/03/2012 09:30, Robby Pelssers wrote:
> Hi all,
>
> Just to make my use case clear I quickly came up with a simple example showing my use case.
>
> I need to write a function that enables me to return all<person>'s  which have at least 1 child that MATCHES a specific search string.
>
>            persons/person[matches(upper-case(children/child/name), upper-case($searchString))]
>
> Above expression does not work as the matches can only handle a single string as input and not a sequence of names.  So I was wondering what would be an elegant way to solve this puzzler?
persons/person[some $n in children/child/name satisifies 
matches(upper-case($n), upper-case($searchString))]

or if you prefer to avoid range variables,

persons/person[children/child/name[matches(upper-case(.), 
upper-case($searchString))]]

(I'm not sure that applying upper-case() to a regular expression is 
particularly good practice, however - for example it will change \w to \W).

Michael Kay
Saxonica
> Kind regards,
> Robby Pelssers
>
>
> <persons>
>    <person>
>      <name>Robby</name>
> 	<children>
> 	<child>
> 	<name>Lindsey</name>
> 	<child>
> 	<child>
> 	<name>Valerie<name>
> 	</child>
> 	</children>
>    <person>
>    <person>
>      <name>Audrey</name>
> 	<children>
> 	<child>
> 	<name>Linn</name>
> 	<child>
> 	<child>
> 	<name>Tamara<name>
> 	</child>
> 	</children>
>    </person>
> </persons>