XPath: selecting on namespaces

[kj]

Suppose I have some XML document that contains tags of the form

<... xmlns:foo="http ://www.bar.org/foo">

<... xmlns:foo="baz" >

<... xmlns:frobozz=" http://www.bar.org/foo">

What's the XPath expression to select the namespace nodes with
prefix "foo"? And what's the XPath expression to select the
namespace nodes with value "http://www.bar.org/foo"?

I am using the Perl module XML::XPath. With it, I know how to
select namespace nodes with value "baz" (using
$xpath_obj->find('//namespace::baz' )), but I get an error if I try
to select namespace nodes with value "http://www.bar.org/foo" using
$xpath_obj->find('//namespace::http ://www.bar.org/foo'). I can
see why the latter would be problematic, since at least the slashes
in the namespace's value would collide with XPath syntax, but I
don't know how to escape them. (Actually, the parser seems to
choke on the colon after http before it gets to do so on the
slashes.)

With a full implementation of the XML::XPath standard, I suppose
I could try something like
$xpath_obj->find('namespac e-uri(//namespace::*)=" http://www.bar.org/foo"')),
but when I do this I get the error "namespace-uri: Function not
supported".

I have no clue how to use XML::XPath to select namespace nodes with
prefix "foo".

Thanks!

kj

P.S. Is there a "standard" forum for XPath-related queries like
this one?
--
NOTE: In my address everything before the period is backwards.

[Dimitre Novatchev [MVP XML]]

"kj" <so***@987jk.co m> wrote in message
news:c5******** **@reader1.pani x.com...

Suppose I have some XML document that contains tags of the form

<... xmlns:foo="http ://www.bar.org/foo">

<... xmlns:foo="baz" >

<... xmlns:frobozz=" http://www.bar.org/foo">

What's the XPath expression to select the namespace nodes with
prefix "foo"?
//namespace::*[name()='foo']

And what's the XPath expression to select the
namespace nodes with value "http://www.bar.org/foo"?
//namespace::*[.='http://www.bar.org/foo']

Cheers,

Dimitre Novatchev [XML MVP],
FXSL developer, XML Insider,

http://fxsl.sourceforge.net/ -- the home of FXSL
Resume: http://fxsl.sf.net/DNovatchev/Resume/Res.html

I am using the Perl module XML::XPath. With it, I know how to
select namespace nodes with value "baz" (using
$xpath_obj->find('//namespace::baz' )), but I get an error if I try
to select namespace nodes with value "http://www.bar.org/foo" using
$xpath_obj->find('//namespace::http ://www.bar.org/foo'). I can
see why the latter would be problematic, since at least the slashes
in the namespace's value would collide with XPath syntax, but I
don't know how to escape them. (Actually, the parser seems to
choke on the colon after http before it gets to do so on the
slashes.)

With a full implementation of the XML::XPath standard, I suppose
I could try something like
$xpath_obj->find('namespac e-uri(//namespace::*)=" http://www.bar.org/foo"')), but when I do this I get the error "namespace-uri: Function not
supported".

I have no clue how to use XML::XPath to select namespace nodes with
prefix "foo".

Thanks!

kj

P.S. Is there a "standard" forum for XPath-related queries like
this one?
--
NOTE: In my address everything before the period is backwards.

[kj]

In <c5***********@ ID-152440.news.uni-berlin.de> "Dimitre Novatchev [MVP XML]" <dn********@yah oo.com> writes:

"kj" <so***@987jk.co m> wrote in message
news:c5******* ***@reader1.pan ix.com...

Suppose I have some XML document that contains tags of the form

<... xmlns:foo="http ://www.bar.org/foo">

<... xmlns:foo="baz" >

<... xmlns:frobozz=" http://www.bar.org/foo">

What's the XPath expression to select the namespace nodes with
prefix "foo"?

//namespace::*[name()='foo'] And what's the XPath expression to select the
namespace nodes with value "http://www.bar.org/foo"?

//namespace::*[.='http://www.bar.org/foo']

Thank you!

kj

--
NOTE: In my address everything before the period is backwards.