RE: Retaining value of a Global variable

The logic for this is simply to translate your English-language description
into code:

<xsl:variable name="articles" select="article[class='WebCasts']"/>
<xsl:if test="$articles">
  <title>WebCasts</title>
  <xsl:apply-templates select="$articles"/>
</xsl:if>

Here test="$articles" tests to see whether the $articles node-set is
non-empty. You could write it as test="count($articles) != 0", but the
coding idiom used above soon becomes familiar. 

Michael Kay

> -----Original Message-----
> From: Vivek Shinde [mailto:Vivek.Shinde@xxxxxxx] 
> Sent: 19 July 2004 19:02
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: RE:  Retaining value of a Global variable
> 
> Hi,
> I'll post it soon. I am trying to find simpler solution. 
> Michael had suggested position() but since I may have the 
> article(s) at any position, that would not work. I am trying 
> with xsl:key.
> 
> My main problem is:
> I have an XML that contains multiple articles for a 
> newsletter. There could or could not be some articles with 
> article-classification as 'Webcasts'. If I find even a single 
> article with classification of 'Webcast', then I want to 
> print a title 'Webcasts' and then list all the articles. I 
> have done the code for listing the articles. The problem I am 
> having is identifying if there's even one article of that 
> classification and then print 'Webcast' title only once. 
> That's why I was looking to set the global variable and then 
> increment it once I hit the first webcast article and then go 
> for listing the articles of that type. But it seems that's 
> not possible. Therefore I am trying xsl:key. Any other input 
> on doing it simpler way?
> 
> The XML sample:
> <article>
>    <class>News</class>
>    <teaser>AAAAAAAAAA</teaser>
> </article>
> <article>
>    <class>Webcast</class>
>    <teaser>BBBBBBBBBB </teaser>
> </article>
> <article>
>    <class>News</class>
>    <teaser>CCCCCCCCCCC </teaser>
> </article>
> <article>
>    <class>Webcast</class>
>    <teaser>DDDDDDDD </teaser>
> </article>
> 
> Thanks
> Vivek
> 
> -----Original Message-----
> From: Wendell Piez [mailto:wapiez@xxxxxxxxxxxxxxxx] 
> Sent: Monday, July 19, 2004 11:05 AM
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: Re:  Retaining value of a Global variable
> 
> 
> I'm going to leave this one aside for a bit. Until we hear again from 
> Vivek, it's not clear to me that this is -- quite -- a 
> standard grouping 
> problem, due to the requirement to group according to string 
> containment, 
> not just string equality.
> 
> It'd be much easier if we could see a representative example 
> of the input. 
> Vivek, could you post a bit of it, along with a restatement 
> of what kind of 
> output you want for your input? That way it's all in one 
> email -- less to 
> guess, less confusing to track.
> 
> On the other hand, maybe our haphazard comments and hints 
> have been enough 
> to help Vivek find the solution on his own.
> 
> Cheers,
> Wendell
> 
> At 10:32 AM 7/19/2004, M.David wrote:
> >After being "woken up" to a fresh breath of "oh my goodness did I 
> >really
> >swing and miss before the ball even crossed the plate"....
> 
> 
> 
> ======================================================================
> Wendell Piez                            mailto:wapiez@xxxxxxxxxxxxxxxx
> Mulberry Technologies, Inc.                http://www.mulberrytech.com
> 17 West Jefferson Street                    Direct Phone: 301/315-9635
> Suite 207                                          Phone: 301/315-9631
> Rockville, MD  20850                                 Fax: 301/315-8285
> ----------------------------------------------------------------------
>    Mulberry Technologies: A Consultancy Specializing in SGML 
> and XML 
> ======================================================================