RE: XPATH simple question

http://www.dpawson.co.uk/xsl/sect2/N2696.html

-----Original Message-----
From: Oscar [mailto:ocaraballo@xxxxxxxxxxxxx]
Sent: Monday, March 10, 2003 11:36 AM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject:  XPATH simple question


Hi all:

I have this xml

<ROOT>
<SYSTEMS ID="SAMP" DESC="Encyclopedia Database" >
<SYSTEM ID="SAMP2" DESC="I+D" />
<SYSTEM ID="BKMD" DESC="Syst 1" />
<SYSTEM ID="BKMI" DESC="Syst 2" />
</SYSTEMS></ROOT>

I want to select SYSTEMS but i dont want to repeat those systems that have
the same id

i have make this and works:

<xsl:template match="SYSTEMS">
 <xsl:apply-templates select="SYSTEM[(@ID != (preceding::SYSTEM/@ID))]"/>
</xsl:template>

but this doesnt work:

<xsl:template match="SYSTEMS">
<xsl:apply-templates select="SYSTEM[(@ID != (following::SYSTEM/@ID)) OR (@ID
!= (preceding::SYSTEM/@ID))]"/>
</xsl:template>

can somebody helpme?


thx a lot.



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