Subject: [xsl] Generic Templates (Was: Re: nested templates?) From: Dimitre Novatchev <dnovatchev@xxxxxxxxx> Date: Fri, 18 May 2001 06:36:32 -0700 (PDT) |
Jeni Tennison wrote: > > That is a design flaw. I should be able to do this: > > > > <xsl:call-template name="{input/type}" /> > > As I pointed out, you probably want to use matching templates rather > than named ones to achieve this effect. I guess the reasoning behind > not allowing you to call templates where you make up the names on the > fly is that if you make up a name for a template that doesn't exist, > the stylesheet will fail. If you know all the names in advance, then > you can use xsl:choose to choose between them. As I pointed out in an earlier message (http://sources.redhat.com/ml/xsl-list/2001-05/msg00276.html), you don't need to know either the template names in advance, or use xsl:choose to choose between them. There is a technique to dynamically invoke a template that is unknown and not-yet-written, using a unique match pattern. Thus, we can have many useful generic templates -- a single generic template that implements both the min() and max() functions, templates for binary search, generic sort, etc... These templates are written without knowing in advance what the "greater-than" or "less-than" or whatever a necessary relation/action is and they allow the caller to specify dynamically through a parameter the template that implements this relation/action. I am attempting to submit some templates (among them 5 generic ) to the EXSLT group and ***hope*** to succeed soon, because despite the kind help I got from Jim Fuller, writing the necessary documentation for submitting EXSLT functions is much more difficult than implementing the functions themselves. Dimitre Novatchev. __________________________________________________ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/ XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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