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Re: XPath count/contains

• To: xml-dev@l...
• Subject: Re: XPath count/contains
• From: Martin Probst <martin@x...>
• Date: Wed, 07 Dec 2005 14:55:21 +0100
• In-reply-to: <JOEGLBMCMOCKMEJDEAKOMEOICOAA.tomaz@w...>
• Organization: X-Hive Corporation
• References: <JOEGLBMCMOCKMEJDEAKOMEOICOAA.tomaz@w...>

Hi,

> if i use
> <xsl:value-of select="count(//b_id)"/>
> i get result 2
> but i would like to count upon the att ID in <b_id>.
> 
> so that i get a count for id=1 within <b_id> 1
> and count for id=3 within <b_id> 2
> 
> I guess XPath doesn't support this. is there anyother solution (without
> using any script language).

So you want to group the nodes by ID and then return the count?

For suitably large values of XPath this is possible - XPath 2.0 will do
the trick easily:

for $id in distinct-values(//b_id/@id)
return
  ($id, count(//b_id[@id=$id]))

Martin

• References:
  • XPath count/contains
    • From: "Tomaz Kastrun" <tomaz@w...>

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