Subject: Re: [xsl] How do I pass the mode as a string? From: "Michael Kay mike@xxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> Date: Tue, 3 Mar 2020 11:48:02 -0000 |
Section B'6.6.2 in the XSLT 3.0 spec states: The xsl:apply-templates <https://www.w3.org/TR/xslt-30/#element-apply-templates> element also has an optional mode attribute. The value of this attribute must be one of the following: an EQName <https://www.w3.org/TR/xslt-30/#dt-eqname>, which is expanded as described in 5.1.1 Qualified Names <https://www.w3.org/TR/xslt-30/#qname> to define the name of a mode the token #default, to indicate that the default mode for the stylesheet module <https://www.w3.org/TR/xslt-30/#dt-stylesheet-module> is to be used the token #unnamed, to indicate that the unnamed mode <https://www.w3.org/TR/xslt-30/#dt-unnamed-mode> is to be used the token #current, to indicate that the current mode <https://www.w3.org/TR/xslt-30/#dt-current-mode> is to be used It does not allow an expression, and it does not allow an attribute value template. It's similar to trying to refer to a variable by name: you can't construct variable names dynamically either, however much you feel it would make your life easier. You haven't described your problem so it's difficult to suggest a different approach to solving it. Higher-order functions might be the right way. Michael Kay Saxonica > On 3 Mar 2020, at 11:21, Kerry, Richard richard.kerry@xxxxxxxx <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote: > > > Normally I would specify apply-template's mode as a literal, eg: > <x:apply-templates mode="inputs" /> > > I have a number of instances of similar code which need to have different modes, eg: > <x:apply-templates mode="outputs" /> > > I'd like to extract all of this into a separate block that I will call with these two values. > > <x:variable name="match-mode" >inputs</x:variable> > <x:apply-templates mode="$match-mode" /> > > Doesn't work. Saxon reports: > Static error at x:apply-templates on line 47 column 74 of xxx.xsl: > XTSE0020: Mode name {$match-mode} is not a valid QName > > OK, so it's a QName, not a string. > > So I try: > <x:variable name="match-mode" as="xs:QName" >inputs</x:variable> > <x:apply-templates mode="$match-mode" /> > > Again giving: > Static error at x:apply-templates on line 47 column 74 of AlarmsAllToDot.xsl: > XTSE0020: Mode name {$match-mode} is not a valid QName > > (xs is defined as xmlns:xs="http://www.w3.org/2001/XMLSchema" ) > > So just telling it to be a QName doesn't seem to work. > I think this syntax for variable means 'inputs' is a text node, so what about: > <x:variable name="match-mode" as="xs:QName" select="'inputs'" /> > <x:apply-templates mode="$match-mode" /> > > So do I need to do something more actively to generate a QName? > There is a QName function, so how about: > > <x:variable name="match-mode" as="xs:QName" select="QName('', 'inputs')" /> > <x:apply-templates mode="$match-mode" /> > > Giving me the same error. > > So, where am I gong wrong? > The QName function takes two strings, the first being the namespace. So is that wrong to be blank? > Is "inputs" in my namespace? Or is it XSLT's? > Given that this will be fed directly to apply-templates, presumably it needs to be in XSLT's, so how about: > > <x:variable name="match-mode" as="xs:QName" select="QName('x', 'inputs')" /> > <x:apply-templates mode="$match-mode" /> > > (x is defined as xmlns:x="http://www.w3.org/1999/XSL/Transform") > > Giving the same error. > > Or is this about how it is presented to apply-templates? > Am I right to use mode="$match-mode", or should that be done differently? > > > So, I've tried a few options but I suspect there's something important I'm missing about QNames and the mode attribute. > Please can someone advise. > > Regards, > Richard. > > > > > > Richard Kerry > BNCS Engineer, SI SOL Telco & Media Vertical Practice > M: +44 (0)7812 325518 > 2nd Floor, MidCity Place, 71 High Holborn, London, WC1V 6EA > richard.kerry@xxxxxxxx <https://webmail.siemens-it-solutions.com/owa/redir.aspx?C=9fb20d019e3e4cb993 44d708709a3177&URL=mailto%3arichard.kerry%40atos.net> > > This e-mail and the documents attached are confidential and intended solely for the addressee; it may also be privileged. If you receive this e-mail in error, please notify the sender immediately and destroy it. As its integrity cannot be secured on the Internet, the Atos group liability cannot be triggered for the message content. Although the sender endeavours to maintain a computer virus-free network, the sender does not warrant that this transmission is virus-free and will not be liable for any damages resulting from any virus transmitted. > > XSL-List info and archive <http://www.mulberrytech.com/xsl/xsl-list> > EasyUnsubscribe <http://lists.mulberrytech.com/unsub/xsl-list/293509> (by email <>)
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