The last paragraph of section 5.8 (Built-in Template Rules) of the
XSLT 1.0 spec reads:
"The built-in template rules are treated as if they were imported
implicitly before the stylesheet and so have lower import precedence
than all other template rules. Thus, the author can override a
built-in template rule by including an explicit template rule."
Therefore, <xsl:apply-imports/> is invoking the built-in rule for the
root node, which is just <xsl:apply-templates/>. Seems right to me.
:)
-Brandon :)
On Wed, Jul 6, 2011 at 9:06 AM, Martin Honnen
<Martin(_dot_)Honnen(_at_)gmx(_dot_)de> wrote:
Recently I came across a stylesheet that did not include nor import any
other modules but used apply-imports, as in the following reduced sample:
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
version="1.0">
<xsl:template match="/">
<html>
<head>
<title>Test</title>
</head>
<body>
<xsl:apply-imports/>
</body>
</html>
</xsl:template>
<xsl:template match="foo">
<p>
<xsl:value-of select="."/>
</p>
</xsl:template>
</xsl:stylesheet>
My initial understanding and expectation was that initially the template
matching the document node (match="/") would be applied and output the html
element with its head and body child element but that the apply-imports
would only look for imported template rules and that way would not apply the
template with match="foo" in the same stylesheet.
Yet when I run the stylesheet with Saxon 6.5.5 or 9.3.0.5 against the most
simple XML input
<foo>foo 1</foo>
the result is containing a <p>foo 1</p> element, as in
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Test</title>
</head>
<body>
<p>foo 1</p>
</body>
</html>
xsltproc on the other hand outputs
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Test</title>
</head>
<body></body>
</html>
so there the template match="foo" is not applied by the apply-imports.
The XSLT 1.0 spec in its usual brevity says:
"xsl:apply-imports processes the current node using only template rules
that were imported into the stylesheet element containing the current
template rule".
Based on that it seems the apply-imports should not result in applying the
template with match="foo" in the same stylesheet.
On the other hand most other processors I have tried (Mozilla's, Opera's,
IE's) seem to agree with Saxon and not with xsltproc so my simple assumption
that a template in the same stylesheet is not an imported one seems wrong.
What are your thoughts?
--
Martin Honnen --- MVP Data Platform Development
http://msmvps.com/blogs/martin_honnen/
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