Re: [xsl] A few questions to the experts: functions, templates, loops

[juggy@xxxxxxx]

Hi,

Thanks for your help! But what do you mean by "no one ever recognizes 
the quotes..."? Irony?

Regards,
Juggy

Jarno.Elovirta@xxxxxxxxx wrote:
> Hi,
>
>
> > 1.) How do I write my own functions with return values? For example, I
> > have a function that traverses the tree, searches a page by id and
> > delivers the corresponding path-name. My solution up until 
> > now has been
> > to create a template (please, don't laugh at me - I know this is most
> > probably the worst possible approach) which delivers the name as text.
> > This works, but... it's sort of.. akward
>
>
> "It is not a laughing matter". (No one ever recognizes the quotes I use, sigh.) You can't define functions in XSLT 1.0, unless you use an extension mechanism, e.g. one described by the friendly folk at EXSLT <http://exslt.org>. Saxon 7.x partially implements XSLT 2.0 if you really really really want to define your own functions (in XSLT).
>
>
> > 2.) I would like to have several templates matching e.g. "/test", but
> > for different purposes. Since I have some apply-templates they tell me
> > it's ambigous (which it of course is). Is there a way to elegantly
> > parameterize this?
>
>
> <http://www.w3.org/TR/xslt#modes>
>
> > 3.) Is there a way to pass parameters when calling a xml-file? Like
> > calling "http://...file.xml?param=1"; and the xslt-script can evaluate
> > that parameter? I only found a way to do it via an xslt-processor, and
> > since I can't use scripts/cgis/processors... on my server it has to be
> > done via the xml/xslt purely.
>
>
> Well... no, you have to use the API that your XSLT processor offers you.
>
>
> > 4.) Sometimes I couldn't use templates, e.g. because of 
> > ambigouty. Then
> > I usually used the xsl:for-each statement to select the corresponding
> > node (e.g. select="/pages/page"). But I don't need the
> > loop-functionality - is there a simpler statement to do so?
>
>
> To select nodes and process them? You could try to use different priorities <http://www.w3.org/TR/xslt#section-Defining-Template-Rules> on you templates, if that would work for you. Anyhow, xsl:for-each is no more a "loop" than using xsl:apply-templates and xsl:template is.
>
>
> > 5.) Is there a way to "break out" of a loop?
>
>
> If the "loop" is a recursive template, yes. If you're talking about xsl:for-each, no; xsl:for-each is not a loop. Try only selecting the nodes you want to process instead.
>
>
> > 6.) How do I enter new data in an existing xml-file using saxon? I
> > didn't find any short, easy examples on that. Can anyone point me to a
> > source, please?
>
>
> Use a buffer to output you serialized results and overwrite the original file.
>
> Jarno
>
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