Given to following XML,
<root>
<a>a</a>
<b>b</b>
</root>
a stylesheet with only one root template with the instruction
<xsl:apply-templates select="root"/> does the same as a
stylesheet with the
instruction <xsl:value-of select="root"/>, namely: "ab"
(neglecting possible whitespaces).
Is this always correct?
The effect is the same, but by coincidence rather than by definition. I
think the effect will always be the same if the content is untyped.
In 2.0 in the presence of a schema, however, doing the recursive descent
with apply-templates will give you the concatenation of the text nodes,
whereas value-of takes the typed value and converts it to a string, which
may be subtly different. In the worst case, if <root> is described in the
schema as an element with element-only content, value-of will fail, because
such an element has no typed value.
Michael Kay
http://www.saxonica.com/
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