LibXML-Ruby find with namespace 1

[lazylester]

I would greatly appreciate any help with this noob question...

I'm using LibXML-Ruby to make a very small xml doc and then search for a node. The document is correctly generated, but I'm evidently missing something very basic because the search is not yielding any result. I have:

require 'rubygems'
require 'xml'
tmp_doc = XML:ocument.new()
tmp_doc.root = XML::Node.new('a:frame')
tmp_doc.root["xmlns:a"]='

http://bar/baz'

tmp_doc.root << XML::Node.new('a:table')
puts tmp_doc
puts tmp_doc.find("//a:table","a:

http://bar/baz").length

The doc is printed but search result is 0

Can you help with the "find" statement, please? Thanks in advance.

 

[tsuji]

This is a rewrite of it.
[tt]
require 'rubygems'
require 'xml'

tmp_doc = XML:ocument.new()
tmp_doc.root = XML::Node.new('a:frame')

[red]#[/red]tmp_doc.root["xmlns:a"]='[ignore]

http://bar/baz

[/ignore]'
[blue]nsroot=XML::Namespace.new(tmp_doc.root,'a','[ignore]

http://bar/baz

[/ignore]')[/blue]

tmp_doc.root << [blue]p=[/blue]XML::Node.new('a:table')
[blue]p.namespaces.namespace=nsroot[/blue]

puts tmp_doc
puts tmp_doc.find("//a:table",[blue]{'a'=>'[ignore]

http://bar/baz

[/ignore]'}[/blue]).length
[/tt]