Subject: [xsl] Perfomance: 'conditional instruction' vs. 'multi template' From: Norbert Heidbrink <nh@xxxxxxxx> Date: Sat, 3 Nov 2012 16:24:04 +0100 |
Hi everybody, if a node is to be processed differently, depending on a certain condition, there are two approaches. Let's say, the condition is "existance of child x". Approach 1: two templates with different matching XPaths <template match="thenode[child::x]"> b& do_this b& </template> <template match="thenode[not(child::x)]"> b& do_that b& </template> Approach 2: one template with a conditional instruction <template match="thenode"> <xsl:choose> <xsl:when test="x"> b& do_this b& </xsl:when> <xsl:otherwise> b& do_that b& </xsl:otherwise> </xsl:choose> </template> I wonder, if one of these approaches is to be favoured? Are there any severe implications on performance? Any other advantages / disadvantages that speak in favour of approach 1 or approach 2? I am curious to read your estimations, Norbert
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