As a use case I'm trying to catch typos and other 'man made'
errors. How might a transformatron catch those?
Two defensive techniques are:
1. Use the as attribute on your template:
<xsl:template match="foo" as="element(p)">
<xsl:apply-templates select="/foo/bar"/>
</xsl:template>
If the apply-templates call doesn't result in a <p> (for whatever
reason) then you will get an error.
2. Use a variable with the as attribute:
<xsl:variable name="bar" select="/foo/bar" as="element(bar)"/>
If the variable doesn't select a bar element, then you'll get an error.
Ultimately though, the best defense is result validation and a tight schema.
--
Andrew Welch
http://andrewjwelch.com
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