Re: [xml-dev] Venetian Blinds vs Garden of Eden patterns for industry

["Pete Cordell" <petexmldev@codalogic.com>]

Original Message From: "G. Ken Holman"

>>More precisely what I should have said is that XPath can't express "b 
>>whose nearest qualified ancestor is in namespace ns1".  Sort of 
>>b[qualified-ancestor::ns1]!
>
>   b[ancestor::*[namespace-uri()!=''][1][self::ns1:*]]
>
> Does this help you?

I would have to say yes and no to that :-)  I'm impressed that it can do the 
job, but its not pretty!

Thanks for this.

Pete Cordell
Codalogic Ltd
Interface XML to C++ the easy way using C++ XML
data binding to convert XSD schemas to C++ classes.
Visit http://codalogic.com/lmx/ or http://www.xml2cpp.com
for more info
----- Original Message ----- 
From: "G. Ken Holman" <gkholman@CraneSoftwrights.com>
To: "XML-Dev Mailing list" <xml-dev@lists.xml.org>
Sent: Thursday, October 28, 2010 8:54 PM
Subject: Re: [xml-dev] Venetian Blinds vs Garden of Eden patterns for 
industry standards XML Schemas


>
> At 2010-10-28 20:48 +0100, Pete Cordell wrote:
>>Original Message From: "G. Ken Holman"
>>
>>>>My XPath knowledge is very weak, but does that allow for matching 'b' in 
>>>>the 'tree' of:
>>>>
>>>>ns1:root/a/b  ?
>>>
>>>No, you only asked "b whose qualified parent is in namespace ns1"
>>
>>Ah sorry.  Instead of 'parent' I should have used the word 'ancestor'.
>>
>>More precisely what I should have said is that XPath can't express "b 
>>whose nearest qualified ancestor is in namespace ns1".  Sort of 
>>b[qualified-ancestor::ns1]!
>
>   b[ancestor::*[namespace-uri()!=''][1][self::ns1:*]]
>
> Breaking that down:
>
>   b
>   b[ancestor::*[namespace-uri()!='']] = all ancestors not in null 
> namespace
>   b[ancestor::*[namespace-uri()!=''][1]] = closest of those
>   b[ancestor::*[namespace-uri()!=''][1][self::ns1:*]] = when it is in ns1
>
> Does this help you?
>
> . . . . . . . . . Ken
>
>
> --
> Crane Softwrights Ltd.          http://www.CraneSoftwrights.com/m/
> G. Ken Holman                 mailto:gkholman@CraneSoftwrights.com
> Male Cancer Awareness Nov'07  http://www.CraneSoftwrights.com/m/bc
> Legal business disclaimers:  http://www.CraneSoftwrights.com/legal
>
>
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