XSLT <xsl:namespace-alias> element

XSLT element

Definition and Usage

The <xsl:namespace-alias> element is used to replace the namespace in the stylesheet with a different namespace in the output, in other words, using another prefix to replace the prefix associated with the given namespace.

Note:<xsl:namespace-alias> is a top-level element (top-level element) and must be a child element of <xsl:stylesheet> or <xsl:transform>.

Sometimes, an XSLT file generates another XSLT. This brings up a problem with namespaces because there is no clear way to declare two prefixes for the same namespace, and the processor will not treat the two prefixes as the same namespace and operate on them. The <xsl:namespace-alias> command can assign a transition namespace to an alternative prefix, apply the stylesheet, and then map the alternative namespace to the XSLT namespace.

Although file generation from XSL to XSL is the main purpose of this command, it is not the only use. This command can be used in any place where there is a namespace conflict (for example, xsi: schema data type namespace).

Syntax

<xsl:namespace-alias
stylesheet-prefix="prefix|#default"
result-prefix="prefix|"#default"/>

Attribute

Attribute Value Description
stylesheet-prefix
  • prefix
  • #default
 Required. Defines the namespace you want to change.
result-prefix
  • prefix
  • #default
 Required. Defines the expected namespace for the output.

Instance

Example 1

Prefix wxsl converts to prefix xsl: in the output:

<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:wxsl="http://www.codew3c.com/w3style.xsl">
<xsl:namespace-alias stylesheet-prefix="wxsl" result-prefix="xsl"/>
<xsl:template match="/">
  <wxsl:stylesheet>
    <xsl:apply-templates/>
  </wxsl:stylesheet>
</xsl:template>
</xsl:stylesheet>

XSLT element