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comp.lang.ruby

REXML and XPath

Roland Schmitt

3/26/2005 7:30:00 PM

Hi,

i want to select the <ds:Signature> element in the following xml
document (shortend):

<env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envel... ...
<env:Header>
<wsse:Security env:mustUnderstand="1" ...
<wsse:BinarySecurityToken ...
<ds:Signature xmlns:ds="http://www.w3.org/2000/... ...
<ds:SignedInfo> ...

I have tried various approachs with REXML and XPATH like

e=XPath.match(doc, "/env:Envelope/env:Header/wsse:Security/ds:Signature")

but it returns only an empty array.


e=XPath.match(doc, "/env:Envelope/env:Header/wsse:Security")

returns the <wsse:Security> element as expected.

Any hints?

Regards,

Roland
2 Answers

Phlip

3/26/2005 7:36:00 PM

0

Roland Schmitt wrote:

> I have tried various approachs with REXML and XPATH like
>
> e=XPath.match(doc, "/env:Envelope/env:Header/wsse:Security/ds:Signature")

XPath.first() ?

--
Phlip
http://industrialxp.org/community/bin/view/Main/TestFirstUser...

Mark T

3/27/2005 4:55:00 AM

0

Hi Roland.

I've spent some time with Rexml.

The preface is that the Rexml tut page is feature packed.
http://www.germane-software.com/software/rexml/docs/tut...

Most questions you will come across in your first months are answered
on this page. Amazingly.

Second tip is to make the xml 'doc' a 'Rexml doc' before you try any
Rex actions.

Nod to T-Rex soft tissue .... 'what could go wrong?'.

Markt


On Sun, 27 Mar 2005 04:29:56 +0900, Roland Schmitt
<Roland.Schmitt@web.de> wrote:
> Hi,
>
> i want to select the <ds:Signature> element in the following xml
> document (shortend):
>
> <env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envel... ...
> <env:Header>
> <wsse:Security env:mustUnderstand="1" ...
> <wsse:BinarySecurityToken ...
> <ds:Signature xmlns:ds="http://www.w3.org/2000/... ...
> <ds:SignedInfo> ...
>
> I have tried various approachs with REXML and XPATH like
>
> e=XPath.match(doc, "/env:Envelope/env:Header/wsse:Security/ds:Signature")
>
> but it returns only an empty array.
>
> e=XPath.match(doc, "/env:Envelope/env:Header/wsse:Security")
>
> returns the <wsse:Security> element as expected.
>
> Any hints?
>
> Regards,
>
> Roland
>
>