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Namespace aliasing

In advanced programming, e.g. when a stylesheet is generated by another stylesheet, it is some times useful to use aliases for namespaces to be outputed.

Element xsl:namespace-alias is very useful in such a case. In the example the first alias moves element from "oooooo" namespace to "rrrrrr" namespace and so we have r:yyy in the output. The second alias moves unprefixed element in the stylesheet to the "ssssss" namespace and so we have s:ppp. The third alias moves elements from "zzzzzz" namespace to default result namespace, in this case the element xxx is in the null namespace.

XSLT

      <xsl:stylesheet
                  xmlns:o="oooooo"
                  xmlns:r="rrrrrr"
                  xmlns:s="ssssss"
                  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                  xmlns:z="zzzzzz"
                  version="2.0">
            <xsl:output  method="xml"
                        indent="yes"
                        omit-xml-declaration="yes"/>
            <xsl:namespace-alias  stylesheet-prefix="o"
                        result-prefix="r"/>
            <xsl:namespace-alias  stylesheet-prefix="#default"
                        result-prefix="s"/>
            <xsl:namespace-alias  stylesheet-prefix="z"
                        result-prefix="#default"/>

            <xsl:template  match="/aaa">
                  <z:xxx  xsl:exclude-result-prefixes="#all">
                        <o:yyy/>
                        <ppp/>
                  </z:xxx>
            </xsl:template>

      </xsl:stylesheet>

XML

<aaa/>

Output

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