Subject: Re: [xsl] XSLT Dead? From: David Carlisle <davidc@xxxxxxxxx> Date: Wed, 18 Apr 2007 00:11:19 +0100 |
> Well the answer I look for is that with xsl:apply-templates the > processing is controlled by the structure of the input document, while > with xsl:for-each the processing is controlled by the stylesheet. I think I'd fail the test:-) if I'm in an xhtml document and processing a p(aragraph) and do <xsl:template match="h:p"> <xsl:apply-templates select="/h:html/h:head/h:title"/> <xsl:for-each select="node()"> <a id="generate-id()"/><xsl:copy-of select="."/> </xsl:for-each> </xsl:template> Then I'd say that the first part is "pull" style where you have gone off and fetched data from elsewhere in the document, but it's coded with apply-templates, and the second part is "push" style where you are walking the children in document order, letting the input drive the result. so I think that the "pulliness" or "pushiness" of a stylesheet depends mostly on the nature of the xpaths used in select attributes. apply-templates select defaults to node() which is the canonical "push" example, and for-each has no default select so is often used for "pull" things. Also of course for-each is far more limited as it's equivaent to an apply template where every node is matched by the same template. David
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