Re: [xml] XPath evaluation

[Nic <nferrier tapsellferrier co uk>]

=?ISO-8859-1?Q?Fabrice_Desr=E9_-_France_Telecom_R=26D/MAP?=
=?ISO-8859-1?Q?S/AMS?= <fabrice desre francetelecom com> writes:

> CAPRON Patrick wrote:
> > I have tried with the use of xmlXPathRegisterNs, but it doesn't work.
> > xmlXPathRegisterNs(xpathCtx, BAD_CAST "urn:ssp.ApplicationHeader$ahV10", BAD_CAST "")
> > xmlXPathRegisterNs(xpathCtx, BAD_CAST "urn:ssp.pm.GetAccount$camt.003.001.02", BAD_CAST "")
> > xmlXPathRegisterNs(xpathCtx, BAD_CAST "SwInt", BAD_CAST "")
> >
> > It has the same behaviour...
> > /REQUEST/RequestPayload/Document doesn't work
> > /REQUEST/RequestPayload/*[name()='Document'] works fine
>
>   The second query works because 'Document' is the name if the 
> element... If you use local-name() instead it wont work anymore.
>
> You're facing a faq about XPath and default namespaces : there is no 
> default namespace in XPath. So if you want to select a namespaced 
> element, you must bind the namespace's uri to a prefix and use it in 
> your xpath expression. It doesn't matter if your document is using a 
> default namespace or a prefix.
>
> So try something like : xmlXPathRegisterNs(xpathCtx, BAD_CAST 
> "urn:ssp.pm.GetAccount$camt.003.001.02", BAD_CAST "ssp");
> and the query : /REQUEST/RequestPayload/ssp:Document
>
> And also, your document uses a prefix that is not declared :
> t.xml:10: namespace error : Namespace prefix SwInt on RequestPayload is 
> not defined
>       <SwInt:RequestPayload>

prefixes without declerations are ok though arn't they? I thought that
was one of the design ideas behind namespaces; that colon separated
node names are just names.


Nic