Re: [xsl] Suggestions for filtering algorithm

["Martin Honnen martin.honnen@xxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

Am 18.12.2019 um 04:08 schrieb Rick Quatro rick@xxxxxxxxxxxxxx:
>
> Hi All,
>
> I have an XML file with parts similar to this:
>
> <?xml version="1.0" encoding="UTF-8"?>
>
> <parts>
>
>     <part no="123456" desc="HOSE KIT"/>
>
>     <part no="234567" desc="HOSE FITTINGS"/>
>
>     <part no="345678" desc="HOSE SEGMENT"/>
>
> </parts>
>
> When processing the parts with XSLT 2, I want to filter out some of
> the parts based on words or phrases that the user supplies. I was
> thinking of a lookup XML file that they could maintain:
>
> <?xml version="1.0" encoding="UTF-8"?>
>
> <exclude>
>
>     <exclude>FITTINGS</exclude>
>
>     <exclude>SEGMENT</exclude>
>
> </exclude>
>
> This is a roughed out stylesheet, but I am not sure the best way to
> use the look up. I could convert the <exclude> elements to a regular
> expression and apply it to the @desc attribute, but I am not sure if
> there is a better approach that I am missing.
>
> <?xml version="1.0" encoding="UTF-8"?>
>
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
>
> xmlns:xs="http://www.w3.org/2001/XMLSchema";
>
>     exclude-result-prefixes="xs"
>
>     version="2.0">
>
>     <xsl:variable name="exclude" select="doc('excludes.xml')"/>
>
>     <xsl:template match="/parts">
>
>         <xsl:apply-templates/>
>
>     </xsl:template>
>

If you add an empty template

   <xsl:template match="part[some $exclude in $exclude/exclude/exclude
satisifes matches(@desc, $exclude) ]"/>

then any matched "part"s will not be processed, for the rest you can set
up the identity transformation. Or you can of course use any such
predicate in an apply-templates e.g.

   <xsl:apply-templates select="part[not(some $exclude in
$exclude/exclude/exclude satisifes matches(@desc, $exclude))]"/>