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RE: Trouble selecting appropriate node-set depending o

Subject: RE: Trouble selecting appropriate node-set depending on parameters
From: "Michael Kay" <mike@xxxxxxxxxxxx>
Date: Tue, 28 Sep 2004 08:40:00 +0100
travis kay
If you give each parameter a default value (on which never occurs in the
data), say

<xsl:param name="PLATFORM" select="'#'"/>

then you can write the corresponding predicate as

/platform[@name=$PLATFORM or $PLATFORM='#']

Michael Kay

> -----Original Message-----
> From: Travis [mailto:travis@xxxxxxxxxxxxxx] 
> Sent: 28 September 2004 00:26
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject:  Trouble selecting appropriate node-set 
> depending on parameters
> Hi All,
> I'm new to the list and XSL.  So 1st of all, greetings to you 
> all.  I'm
> hoping someone here can point me in the right direction.
> I'm writing a small xsl stylesheet to select a subset of 
> nodes from an xml
> document.  The important part looks like this...
> <xsl:param name="PRODUCTGROUP" />
> <xsl:param name="PLATFORM"  />
> <xsl:param name="ITEM" />
> <xsl:for-each select="/store/productGroup[@type =
> $PRODUCTGROUP]/platform[@type=$PLATFORM]/item[@type=$ITEM]">
> etc..
> What happens is I pass in the values of productgroup, 
> platform and item with
> php.  I can then retrieve a list of all items the attributes 
> of which match
> the criteria.  This seems to work fine, the only trouble is, 
> I'd like in
> some cases to be able to choose all items, regardless of 
> attributes, like
> so...
> <xsl:for-each select="/store/productGroup/platform/item">
> or any combination, like so...
> <xsl:for-each 
> select="/store/productGroup/platform[@type=$PLATFORM]/item">
> I guess I'm a bit unclear how to be able to choose between multiple
> node-sets, depending on the whether or not one of the 
> parameters is set.
> I've been searching for info on this most of the afternoon, 
> but can't seem
> to find much.
> If anyone has any suggestions, I'd be deeply appreciative.
> Thanks!
> -Travis
> ---
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