Re: [xsl] user defined data elements in stylesheets

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

Am 06.12.2019 um 11:55 schrieb Mukul Gandhi gandhi.mukul@xxxxxxxxx:
> Hi all,
> B  B I'm trying to use 'user defined data elements' in an XSLT stylesheet.
>
> Following is my XSLT transformation example,
>
> XML input document:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <root>
> B  B <a val="-1"/>
> B  B <a val="-4"/>
> B  B <a val="5"/>
> B  B <a val="3"/>
> B  B <a val="2"/>
> </root>
>
> XSLT stylesheet (file proc1.xsl, with local absolute URI
> file:///e:/xslt_examples/basic/proc1.xsl):
>
> <?xml version="1.0" encoding="UTF-8"?>
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
> B  B  B  B  B  B  B  B  B  B  B  B 
B xmlns:m_ns0="http://example.com/my_meta_data";
> B  B  B  B  B  B  B  B  B  B  B  B  B exclude-result-prefixes="m_ns0"
> B  B  B  B  B  B  B  B  B  B  B  B  B version="3.0">
>
> B  B  <xsl:output method="xml" indent="yes"/>
> B  B  <!-- this is the user defined data element -->
> B  B  <m_ns0:names>
> B  B  B  B <name>jill</name>
> B  B  B  B <name>jane</name>
> B  B  B  B <name>hello1</name>
> B  B  </m_ns0:names>
>
> B  B  <xsl:template match="root">
> B  B  B  B <result>
> B  B  B  B  B  <xsl:copy-of
select="document('file:///e:/xslt_examples/basic/proc1.xsl')/xsl:stylesheet/m
_ns0:names"
> copy-namespaces="no"/>
> B  B  B  B  B  <xsl:apply-templates select="a[number(@val) gt 0]"
mode="gt0"/>
> B  B  B  B  B  <xsl:apply-templates select="a[number(@val) lt 0]"
mode="lt0"/>
> B  B  B  B </result>
> B  B  </xsl:template>
>
> B  B  <xsl:template match="a" mode="gt0">
> B  B  B  <val><xsl:value-of select="@val"/>: positive</val>
> B  B  </xsl:template>
>
> B  B  <xsl:template match="a" mode="lt0">
> B  B  B  <val><xsl:value-of select="@val"/>: negative</val>
> B  B  </xsl:template>
>
> </xsl:stylesheet>
>
> The above transformation produces, following result,
>
> <?xml version="1.0" encoding="UTF-8"?>
> <result>
> B  B <m_ns0:names xmlns:m_ns0="http://example.com/my_meta_data";>
> B  B  B  <name>jill</name>
> B  B  B  <name>jane</name>
> B  B  B  <name>hello1</name>
> B  B </m_ns0:names>
> B  B <val>5: positive</val>
> B  B <val>3: positive</val>
> B  B <val>2: positive</val>
> B  B <val>-1: negative</val>
> B  B <val>-4: negative</val>
> </result>
>
> The above output is what I'm expecting.
>
> Following are my questions,
>
> You could see that, within my stylesheet, I've used following
> stylesheet instruction,
> <xsl:copy-of
select="document('file:///e:/xslt_examples/basic/proc1.xsl')/xsl:stylesheet/m
_ns0:names"
> copy-namespaces="no"/>
>
> I've used the absolute URI of the stylesheet document, as argument to
> the document() function. Is it possible, to specify the stylesheet
> document reference to the document() function in a portable way (i.e,
> not an absolute URI)?

The usual way is

B B  document('')

but it is not portable in any case, if the stylesheet was loaded from a
string for instance, that call might fail.

In XSLT 2 and 3 I think I would prefer to use a parameter or variable
with element contents instead of user defined data elements, I think
user defined data elements are mainly useful in XSLT 1 to work around
the result tree restriction of any param/variable containing nodes.