[xsl] Re: Selecting distinct values based on an attribute

["Yang" <sfyang at unisvr dot net dot tw>]

Hi, Perry,

For selecting distinct values , key and Muenchian method is one of reliable
approachs, especially when dealing with a large set of data in xml file.

Something like these;

<!-- define key using facilitytype attribute -->
<xsl:key name="facilityAtrr" match="facilities" use="@facilitytype"/>

<!-- define distinct set of facilities based on facility attributes -->
<xsl:variable name="facilityList"
select="//facilities[count(.|key('facilityAtrr', @facilitytype)[1]) = 1]"/>

<!-- data processing such as sorting,ouput...-->
<xsl:template match="/">
<xsl:for-each select="$facilityList">
<xsl:sort select="@facilitytype"/>
<xsl:value-of select="@facilitytype"/>
</xsl:for-each>
</xsl:template>

Hope it is useful to your applications.
Cheers,

Sun-fu Yang,


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