Re: simple grouping question

Subject: Re: simple grouping question
From: Les Howard <les@xxxxxxxxxxxxxxx>
Date: Mon, 18 Sep 2000 13:07:19 -0400
I just figured it out.  The "magic" I needed to get it working was:

      <xsl:if test="string(preceding-sibling::event[1]/date)!=string(date)">

        <xsl:value-of select="date"/>

Looks like I need to find a good XPath tutorial.


Les Howard wrote:

> I'm new to XSLT/XPath and have what I think is a simple question that I
> just can't figure out.  I'm producing an HTML table and want to suppress
> the value in a particular column if the previous element in that column
> had the same value.  I've been through the faq and found some examples
> relating to grouping that are similar to what I want to do, but I have
> been unable to get it work.
> Here's a shortened up version of my XML:
> <events>
>   <event>
>     <date>9/19/2000</date>
>     <name>foo</name>
>   </event>
>   <event>
>     <date>9/19/2000</date>
>     <name>bar</name>
>   </event>
>   <event>
>     <date>9/20/2000</date>
>     <name>baz</name>
>   </event>
> </events>
> And this is what I would like the output to look like.
> <table border="1">
> <tr><td>9/19/2000</td><td>foo</td></tr>
> <tr><td></td><td>bar</td></tr>
> <tr><td>9/20/2000</td><td>baz</td></tr>
> </table>
> I'm using some XSLT like the following to do the translation:
> <xsl:template match="events">
>     <table border="1">
>       <xsl:apply-templates select="event"/>
>     </table>
>  </xsl:template>
> <xsl:template match="event">
>   <tr>
>     <td>
>       <xsl:value-of select="date"/>
>     </td>
>     <td>
>       <xsl:value-of select="name"/>
>     </td>
>   </tr>
> </xsl:template>
> which works, but doesn't suppress the date column value if the value is
> the same.
> Any assistance you can provide in putting me on the right path would be
> most appreciated.
> Thanks,
> Les
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