Hugh,

As Gerrit mentioned, the issue you have encountered is due to the xslt:transform function returning, essentially, a parsed XML document, so the serialization controls that are declared in the XSLT are not being used. If you want the serialized output of the XSLT you can use the xslt:transform-text function. For example:

let $in := <root><child>hello</child></root>

let $xslt := doc('rss.xslt')

let $out := xslt:transform-text($in, $xslt)

return file:write-text('out.xml', $out)

I hope this helps.

Vincent

http://docs.basex.org/wiki/XSLT_Module#xslt:transform-text

http://docs.basex.org/wiki/File_Module#file:write-text

From: BaseX-Talk <basex-talk-bounces@mailman.uni-konstanz.de> on behalf of Hugh Guiney <hugh.guiney@gmail.com>
Sent: Wednesday, August 1, 2018 5:47:55 PM
To: Imsieke, Gerrit, le-tex
Cc: basex-talk@mailman.uni-konstanz.de
Subject: Re: [basex-talk] Can't get `cdata-section-elements` to work at all for XSLT output

Thanks for testing Gerrit, that's good to know. Sounds like a
regression then. Shall I go ahead and file this on Github or does it
need further confirmation?

Christian, your suggestion seems to work around the issue; the CDATA
sections do come in that way. Except, all the elements get sent back
entity-escaped for some reason. I have to manually reverse it back
into XML using `result.replace( />/gi, '>' ).replace( /</gi, '<'
)` in JavaScript. Not sure if that is a separate issue or expected
behavior.

On Wed, Aug 1, 2018 at 2:50 PM, Imsieke, Gerrit, le-tex
<gerrit.imsieke@le-tex.de> wrote:
> Hi Hugh,
>
> The second version where you specify the serialization options in XQuery
> works for me (BaseX GUI 8.6.5 with Saxon PE 9.6.0.7:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <rss xmlns="http://backend.userland.com/rss2"
> xmlns:content="http://purl.org/rss/1.0/modules/content/" version="2.0">
> <content:encoded><![CDATA[hi]]></content:encoded>
> <content:encoded><![CDATA[howdy]]></content:encoded>
> <content:encoded/>
> </rss>
>
> The first version cannot generate CDATA sections since the XSLT processor is
> not serializing anything; it’s the XQuery processor that serializes the
> result.
>
> The error that you are seeing, XPST0081, would be generated if there were no
> namespace declaration for the prefix 'content', maybe caused by an
> indistinguishable look-alike non-ASCII character in 'content'. Doesn’t seem
> to be the case. Maybe this is a bug that is specific to BaseX 9?
>
> Gerrit
>
>
>
> On 01.08.2018 21:17, Hugh Guiney wrote:
>>
>> Hello,
>>
>> First off, loving BaseX so far! Using it as the backend for an API I’m
>> building. However, I’m running into an issue. I’m trying to transform
>> my database XML into an RSS 2.0 feed. It’s mostly working fine, but I
>> can’t output CDATA content at all, which I need to do for
>> `content:encoded` elements.
>>
>> Specs:
>>
>> - BaseX 9.0.2 (started via basexserver script)
>> - Saxon-HE 9.8.0.12J from Saxonica
>> - java version "1.8.0_112"
>> - basex 0.9.0 (NodeJS)
>> - macOS Sierra 10.12.6
>>
>> ### First Attempt
>>
>> I set `cdata-section-elements` in the XSLT.
>>
>> rss.xq:
>> ```
>> xquery version "3.0";
>> declare option output:omit-xml-declaration "no";
>>
>> let $in :=
>> <root>
>> <child>hello</child>
>> </root>
>> let $style := doc( 'rss.xslt' )
>> return xslt:transform( $in, $style )
>> ```
>>
>> rss.xslt:
>> ```
>> <?xml version="1.0" encoding="UTF-8"?>
>> <xsl:transform
>> version="3.0"
>> xmlns="http://backend.userland.com/rss2"
>> xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
>> xmlns:content="http://purl.org/rss/1.0/modules/content/"
>>>
>>>
>> <xsl:output
>> omit-xml-declaration="no"
>> cdata-section-elements="content:encoded"
>> />
>> <xsl:template match="/">
>> <rss version="2.0">
>> <content:encoded>hi</content:encoded>
>> <content:encoded><xsl:text>howdy</xsl:text></content:encoded>
>> <content:encoded><xsl:value-of select="//child"
>> /></content:encoded>
>> </rss>
>> </xsl:template>
>> </xsl:transform>
>> ```
>>
>> Result:
>> ```
>> <?xml version="1.0" encoding="UTF-8"?>
>> <rss xmlns="http://backend.userland.com/rss2"
>> xmlns:content="http://purl.org/rss/1.0/modules/content/"
>> version="2.0">
>> <content:encoded>hi</content:encoded>
>> <content:encoded>howdy</content:encoded>
>> <content:encoded>hello</content:encoded>
>> </rss>
>> ```
>>
>> No CDATA sections.
>>
>> ### Second Attempt
>>
>> I set `cdata-section-elements` in the XQuery.
>>
>> rss.xq:
>> ```
>> xquery version "3.0";
>> declare namespace content = "http://purl.org/rss/1.0/modules/content/";
>> declare option output:omit-xml-declaration "no";
>> declare option output:cdata-section-elements "content:encoded";
>>
>> let $in :=
>> <root>
>> <child>hello</child>
>> </root>
>> let $style := doc( 'rss.xslt' )
>> return xslt:transform( $in, $style )
>> ```
>>
>> rss.xslt:
>> [Unchanged]
>>
>> Result:
>> [XPST0081] No namespace declared for 'content:encoded'.
>>
>> Clearly I declared the namespace two lines up.
>>
>> This looks like a bug to me, but any help appreciated if I’ve missed a
>> step here.
>>
>> Thanks,
>> Hugh
>>
>