Re: forwarding only existing parameter

Ainsi parlait David Carlisle :
> > I'm trying to forward parameters from a template to another, only if they
> > are defined, in the most simple way.
>
> variables and parameters are always defined in XSLT. If a definition of
> a variable x is not in scope then you can not use $x so there is no
> possibilty of asking if x is defined.
>
> Why can't you just always pass on the value of your parameter?
> by choosing a suitable default value you should be able to determine
> which case you are in in your code.
Cause i have the following structure

<template name="list-item">
  <param name="context">

  <li>
    <apply-template select=".">
      <with-param name="context" select="$context"/>
    <apply-template/>
  </li>
</template>

<template match="specific-item1">
  <param name="context">default value</param>

  [..]
</template>

When calling list-item template with a context parameter, it get forwarded to 
template specific-item1. But when calling list-item template without this 
parameter, it forwards an empty context parameter to template specific-item1, 
thus preventing default value use :-(
-- 
Guillaume Rousse <rousse@xxxxxxxxxxxxxx>
GPG key http://lis.snv.jussieu.fr/~rousse/gpgkey.html

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