Re: [xsl] top level xsl:param confusion

[Robert Koberg <rob@xxxxxxxxxx>]

David Carlisle wrote:

> If you pass in an empty string then that is its value, not the default
> of false() however an empty string, used in a boolean context will
> coerce to false() so in many cases it will come to the same thing.
>
>
> <xsl:choose>
>    <!--<xsl:when test="boolean($permission)"> or -->
>    <xsl:when test="$permission">
>
>
> both those are the same thing as test= always has an effective boolean()
> aroiund its value to coerce whatever there to a boolean.
>
> easiest is probably to make your default value  'defult' or some such
> then you can say
> test="$permission != 'default'"

Hi and thanks,

I was hoping to get the benefit of a quick boolean test. Perhaps this is 
a JAXP thing? I would think setting a parameter to an empty string:

transformer.setParameter("permission", "");

would equate to (if the permission param was not sent):

<xsl:param name="permission" select="''"/>
(since that is what I am passing)

To me, this seems like a bug for java processors (at least Saxon and Xalan)

thanks,
-Rob

> David