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Re: Change the value of global variables/params ??

Subject: Re: Change the value of global variables/params ??
From: Paul Levin <plevin@xxxxxxx>
Date: Wed, 08 Dec 1999 13:19:21 -0500
David,
    As a friend of mine says, "Way Cool !"  I will stop using the "changing variable" "feature (bug)".

    Thanks,
    Paul

David Carlisle wrote:

> <xsl:if test="$last_type != .//ITEMTYPE">    <!-- test variable -->
>
>                  <!-- update the last_type variable -->
>                  <xsl:variable name="last_type" select=".//ITEMTYPE"/>        <!-- change variable -->
>
>                 <!-- output the new type -->
>                 <H1><xsl:value-of select=".//ITEMTYPE"/></H1>
> </xsl:if>
>
> Note that you are using an old version of the namespace, I had to change
> to
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
>   version="1.0">
> for xt (also some characters seem to have been lost from long lines)
>
> But your problem is not due to the restrictions that were added to
> prevent `shadowing' ie redecalring a variable in the same scope.
> They are simply one of scope: the scope of a variable binding is the
> surrrounding element, so the scope of that setting of last_type ends at
> the </xsl:if>
>
> The archives of this list, and the faq, have several examples showing
> how you can do grouping in xsl.
>
> Since I got this far I'll include yet another example at the
> end. You'll notice it doesn't use variables at all.
>
> David
>
> <?xml version="1.0"?>
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
>
>  <xsl:output method="html"/>
>
>  <xsl:template match="/">
>      <HTML>
>
>      <BODY>
>
>         <!-- initialize our changing variable -->
>        <xsl:variable name="last_type" select="'none'"
> />                                <!-- initialize variable -->
>
>        <!-- for each item -->
>        <xsl:for-each select="//ITEMTYPE[not(. = following::ITEMTYPE)]">
>           <xsl:sort/>
>            <H1><xsl:value-of select="."/></H1>
>          <xsl:for-each select="//ITEM[INFO/INFOTYPE/ITEMTYPE=current()]">
>           <xsl:sort select="NAME"/>
>            <P><xsl:value-of select="NAME"/></P>
>
>        </xsl:for-each>
>        </xsl:for-each>
>
>      </BODY>
>      </HTML>
>  </xsl:template>
>
> </xsl:stylesheet>
>
> bash-2.01$ xt pl.xml pl.xsl
> <HTML>
> <BODY>
> <H1>TYPE1</H1>
> <P>Name1</P>
> <P>Name2</P>
> <H1>TYPE2</H1>
> <P>Name3</P>
> <P>Name4</P>
> </BODY>
> </HTML>
> bash-2.01$
>
>  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list


 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
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