0. Does <apply-templates select="xyz" /> perform a match on the xyz
node??? xyz node and all its immediate children only??? or xyz node
and all descendants of xyz node?
the xpath xyz selects a set of nodes, in this case the set of all
children of the current node with that name. Templates are then applied
to those nodes (only) in document order. this call to apply templates
will not apply templates to descendants of any of these
nodes. Descendants will only be processed if one of the templates that
is applied recursively applies templates. (The default template for
elements applies templates to child nodes, so there maty not be any
explict calls to apply-templates)
How does one get rid of default templates?
1. Does
<template match="xyz"> ... </template>
match xyz regardless of whether I wanted it do do so or not?
If you didn't want it to match xyz you would presumably use a different
match pattern. The template _matches_ xyz but it may or may not be
executed depending on whether templates are ever applied to that node.
What I'm
trying to say there is no starting point of execution which I can use
to then decide which template should be applied at any given moment???
In XSLT 1 the starting point is always / so if for example you have
<xsl:template match="/">
hello world
</xsl:template>
then processing any input document always produces "hello world" it
doesn't matter what other match templates are in the stylesheet as they
will never be executed as this template just outputs the text and stops
it does not apply templates to any more nodes.
What's the behaviour of xslt 2.0 in this regards?
4. What's the best practice for using applying templates in terms of
when to use which form??
<apply-templates />
<apply-templates select="xyz" />
<apply-templates select="xyz" mode="foo" />
<call-template name="bar" />
It's not a case of best practice, they all do different things.
What do each do differently? I don't have experience with
xslt(obviously apparent) but it appears that using call-template can
achieve what the others achieve plus the use of parameters.
Also, are there any efficiency implications with each of these ?
Many thanks for the reply, it has cleared up a lot of things I was
struggling with :S
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