Re: [xsl] Allowing whitespace to stop merge of adjacent nodes

["Mukul Gandhi" <gandhi.mukul@xxxxxxxxx>]

Please see if this stylesheet would help you:

<?xml version="1.0" encoding="UTF-8" ?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>

 <xsl:output method="xml" indent="yes"/>

 <xsl:key name="x" match="offset/@*" use="local-name()" />

 <xsl:template match="node() | @*">
   <xsl:copy>
     <xsl:apply-templates select="node() | @*" />
   </xsl:copy>
 </xsl:template>

 <xsl:template match="offset[not(preceding-sibling::offset)]">
   <offset>
     <xsl:for-each select="//offset/@*[generate-id() =
generate-id(key('x', local-name())[1])]">
       <xsl:attribute name="{local-name()}">
         <xsl:value-of select="sum(//offset/@*[local-name() =
local-name(current())])" />
       </xsl:attribute>
     </xsl:for-each>
   </offset>
 </xsl:template>

 <xsl:template match="offset" />

</xsl:stylesheet>

This when applied to XML:

<text>
 Hello<offset x="2" y="4" /><offset x="3" y="2" />World
</text>

Produces output:

<?xml version="1.0" encoding="UTF-8"?>
<text>
 Hello<offset x="5" y="6"/>World
</text>

On 10/10/06, Matt Sims <matt.sims@xxxxxxxx> wrote:
> Hi,
>
> I'm hoping that somebody here can help me.
>
> I'm using the following stylesheet to merge adjacent nodes of a
> particular type and sum their attributes:
>
> <?xml version="1.0" encoding="UTF-8" ?>
> <xsl:stylesheet version="1.0"
> xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
> xmlns:aston="http://www.aston.tv/schemas/Aston/Aston7";>
>
>   <xsl:output method="xml" indent="yes"/>
>
>   <xsl:template match="node()">
>       <xsl:copy>
>           <xsl:copy-of select="@*"/>
>           <xsl:apply-templates select="node()[1]"/>
>       </xsl:copy>
>       <xsl:apply-templates select="following-sibling::node()[1]"/>
>   </xsl:template>
>
>   <xsl:template match="aston:offset[not(node())]">
>       <xsl:param name="a" select="/.."/>
>       <xsl:choose>
>           <xsl:when test="following-sibling::node()[self::* or
> normalize-space(.)][1]/self::aston:offset[not(node())]">
>               <xsl:apply-templates
> select="following-sibling::aston:offset[1]">
>                   <xsl:with-param name="a" select="$a|@*"/>
>               </xsl:apply-templates>
>           </xsl:when>
>           <xsl:otherwise>
>               <offset xmlns="http://www.aston.tv/schemas/Aston/Aston7";
> x="{sum($a[name()='x']|@x)}" y="{sum($a[name()='y']|@y)}"
> z="{sum($a[name()='z']|@z)}" />
>               <xsl:apply-templates select="following-sibling::node()[1]"/>
>           </xsl:otherwise>
>       </xsl:choose>
>   </xsl:template>
>
> </xsl:stylesheet>
>
> For example, running it on the following XML:
>
> <text>
>   Hello<offset x="2" y="4" /><offset x="3" y="2" />World
> </text>
>
> would result in:
>
> <text>
>   Hello<offset x="5" y="6" />World
> </text>
>
> My problem occurs if I have a whitespace character between the two
> adjacent nodes, like so:
>
> <text>
>   Hello<offset x="2" y="4" /> <offset x="3" y="2" />World
> </text>
>
> In this case, I wouldn't expect the nodes to be merged as they're not
> strictly adjacent (there's a whitespace node between them) - but they are!
>
> Can anyone tell me what I'm doing wrong?
>
> Thanks in advance,
>
> Matt.


--
Regards,
Mukul Gandhi