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Posted to xindice-users@xml.apache.org by Michael Kastner <ka...@galt.de> on 2005/03/24 15:40:44 UTC

Query question

Hello,

I have a question regarding xquery.

I execute the following query:

string(/bank[name='Dresdner Bank AG']/name)

Against these documents;

<bank>
   <name>Dresdner Bank AG</name>
</bank>
<bank>
   <name>Deutsche Bank</name>
</bank>
<bank>
   <name>Deutsche Bank</name>
</bank>
<bank>
   <name>Some dummy bank</name>
</bank>

The query returns these resources:

<xq:result
   xmlns:xq="http://xml.apache.org/xindice/Query"
   xq:col="/db/banks" xq:key="0100007f626f1e1500000102ca77bb76" />
<xq:result
   xmlns:xq="http://xml.apache.org/xindice/Query"
   xq:col="/db/banks" xq:key="0100007f626f1e1500000102ca7c4773" />
<xq:result
   xmlns:xq="http://xml.apache.org/xindice/Query"
   xq:col="/db/banks"
   xq:key="0100007f626f1e1500000102ca8142c3">Dresdner Bank AG</xq:result>
<xq:result
   xmlns:xq="http://xml.apache.org/xindice/Query"
   xq:col="/db/banks"
   xq:key="0100007f626f1e1500000102d468b1d9" />

What I would expect is only one resoure as a result: the resource 
containig the name "Dresdner Bank AG".

Am I missing something?

Sincerely

Michael Kastner

Re: Query question

Posted by Todd Byrne <by...@cns.montana.edu>.

Try this:

/bank/name[text()='Dresdner Bank AG']

Not sure why the original query doesn't work(probably something to do 
with the string function not correctly filtering off the empty results) 
, but I find that returning whole nodes like in this case 'name' works 
allot better in the long run. The way xindice api is setup you still 
need parse the string anyways then extract the text.

Todd

Michael Kastner wrote:
> Hello,
> 
> I have a question regarding xquery.
> 
> I execute the following query:
> 
> string(/bank[name='Dresdner Bank AG']/name)
> 
> Against these documents;
> 
> <bank>
>   <name>Dresdner Bank AG</name>
> </bank>
> <bank>
>   <name>Deutsche Bank</name>
> </bank>
> <bank>
>   <name>Deutsche Bank</name>
> </bank>
> <bank>
>   <name>Some dummy bank</name>
> </bank>
> 
> The query returns these resources:
> 
> <xq:result
>   xmlns:xq="http://xml.apache.org/xindice/Query"
>   xq:col="/db/banks" xq:key="0100007f626f1e1500000102ca77bb76" />
> <xq:result
>   xmlns:xq="http://xml.apache.org/xindice/Query"
>   xq:col="/db/banks" xq:key="0100007f626f1e1500000102ca7c4773" />
> <xq:result
>   xmlns:xq="http://xml.apache.org/xindice/Query"
>   xq:col="/db/banks"
>   xq:key="0100007f626f1e1500000102ca8142c3">Dresdner Bank AG</xq:result>
> <xq:result
>   xmlns:xq="http://xml.apache.org/xindice/Query"
>   xq:col="/db/banks"
>   xq:key="0100007f626f1e1500000102d468b1d9" />
> 
> What I would expect is only one resoure as a result: the resource 
> containig the name "Dresdner Bank AG".
> 
> Am I missing something?
> 
> Sincerely
> 
> Michael Kastner