XQuery (eg. Zorba or DataPower) does not support the namespace axis.


<a><pre:b xmlns:pre="urn:u"/><pre:c xmlns:pre="urn:u"/></a>

can be created by computed element constructors (2) by this:

element {"a"}{
(
element {fn:QName("urn:u", "pre:b")}{},
element {fn:QName("urn:u", "pre:c")}{}
)
}

Is it true, that "equivalent" (not sure whether right term) XML
<a xmlns:pre="urn:u"><pre:b/><pre:c/></a>

cannot be created by computed element constructors in XQuery?


It can be created by XSLT 1.0+EXSLT stylesheet:

$ java -jar ~/Desktop/saxon6-5-5/saxon.jar dummy.xml compel.xsl ; echo
<a xmlns:pre="urn:u"><pre:b/><pre:c/></a>
$
$ cat compel.xsl
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:exslt = "http://exslt.org/common"
<xsl:output omit-xml-declaration="yes" />

<xsl:template match="/">
<xsl:variable name="tmp">
<xsl:element name="a">
<xsl:attribute name="pre:ʎɯɯnp" xmlns:pre="urn:u"/>
<xsl:element name="pre:b" xmlns:pre="urn:u"/>
<xsl:element name="pre:c" xmlns:pre="urn:u"/>
</xsl:element>
</xsl:variable>

<xsl:apply-templates select="exslt:node-set($tmp)/*"/>
</xsl:template>

<xsl:template match="*">
<xsl:copy>
<xsl:copy-of select="namespace::*|attribute::*[local-name
()!='ʎɯɯnp']"/>
<xsl:apply-templates select="*"/>
</xsl:copy>
</xsl:template>

</xsl:stylesheet>
$


(1) http://www.w3.org/TR/xpath20/#dt-in-scope-namespaces
(2) http://www.w3.org/TR/xquery/#id-computedElements

Mit besten Gruessen / Best wishes,

Hermann Stamm-Wilbrandt
Level 3 support for XML Compiler team and Fixpack team lead
WebSphere DataPower SOA Appliances
https://www.ibm.com/developerworks/mydeveloperworks/blogs/HermannSW/
https://twitter.com/HermannSW/
http://stamm-wilbrandt.de/GraphvizFiddle/
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