Subject: Re: [xsl] xslt style From: Jeni Tennison <jeni@xxxxxxxxxxxxxxxx> Date: Fri, 10 Jan 2003 16:39:00 +0000 |
Hi Mike, >> Well, here is an example of what I think is a bad design: >> >> <xsl:template match="person"> >> <xsl:call-template name="getName" /> >> </xsl:template> >> >> <xsl:template name="getName"> >> <xsl:value-of select="givenName" /> >> <xsl:text> </xsl:text> >> <xsl:value-of select="familyName" /> >> </xsl:template> >> >> The getName template uses the context node at the point the >> template was called in order to resolve the two paths >> ("firstName" and "surname"). > > Then you'll be pleased to hear that xsl:function in XSLT 2.0 won't > allow you to access the context node at the point the function was > called - you have to supply it as an explicit argument. Well no, not particularly. You're confusing my opinion that it's best practice to have context that's used in a template or function declared explicitly in that template or function with a desire to force people to pass values explicitly when calling that template or function. I have no problem with using: <xsl:call-template name="getName" /> to call a template with no parameters. I think it's best practice for the template to be defined as: <xsl:template name="getName"> <xsl:param name="person" select="." as="element person" /> <xsl:value-of select="givenName" /> <xsl:text> </xsl:text> <xsl:value-of select="familyName" /> </xsl:template> with the fact that the context node is used within the template made explicit, but that doesn't mean that I want to write that as a constraint in the language. Similarly, I would have no problem with people defaulting arguments, in function calls; I just think that it would be best practice for functions that use context information to declare parameters for that context information explicitly. But anyway, I understand that there are other reasons that user-defined functions in XSLT 2.0 can't use context information (not that I can remember what they are right now...). Cheers, Jeni --- Jeni Tennison http://www.jenitennison.com/ XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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