Re: [xsl] Trying to Detect corrupt data

["Andrew Welch" <andrew.j.welch@xxxxxxxxx>]

On 25/10/2007, Arthur Maloney <ArthurM@xxxxxxxxxx> wrote:
> Depending on user choice. The Xml file contains 500-50,000 row elements
>
> In the Xml file each row element contains between 2-15 agent elements
> (there is always more than 1). The agent name should be the same in all agent elements.
>
>
>
> Example of Xml file
> 1.  AppicantNumber is always unique for each row element
> 2.  row 1 is not corrupt. All agent names the same
> 3.  rows 2 and 3 are corrupt. Contain more than one agent name (row2
> contains 4 names, row3 2 names).
>
> <table>
> ...
> <row>
>      <applicantNumber>56789</applicantNumber>
>      <agent>John1</agent>
>      <agent>John1</agent>
>      <agent>John1</agent>
>      <agent>John1</agent>
> </row>
> ...
> <row>
>      <applicantNumber>127789</applicantNumber>
>      <agent>John27</agent>
>      <agent>John1</agent>
>      <agent>Fred13</agent>
>      <agent>John27</agent>
>      <agent>John27</agent>
>      <agent>John27</agent>
>      <agent>Paul8</agent>
>      <agent>John27</agent>
> </row>
> ...
> <row>
>      <applicantNumber>16789345</applicantNumber>
>      <agent>Fred9</agent>
>      <agent>Fred9</agent>
>      <agent>Fred9</agent>
>      <agent>John1</agent>
>      <agent>Fred9</agent>
>      <agent>Fred9</agent>
>      <agent>Fred9</agent>
>      <agent>Fred9</agent>
>      <agent>Fred9</agent>
> </row>
> ...
> </table>


You haven't shown any XSLT or given a clue to what version you're
using (which is always a good idea)...

However in this case the solution is probably the same for both: to
check the applicant number is unique define a key and check that it
only ever contains a single item with that value eg:

<xsl:key name="appNum" match="applicantNumber" use="."/>

and then when matching <row>:

count(key('appNum', applicantNumber)) = 1

To check that all <agent>s contain the same value use:

agent != agent  (one of the few times you want to use !=   ....!)

or maybe in 2.0:

count(distinct-values(agent) eq 1)

I hope this helps...


cheers
-- 
Andrew Welch
http://andrewjwelch.com
Kernow: http://kernowforsaxon.sf.net/