From: Mark Probert <probertm@...>
Date: 2003-01-10T00:47:30+09:00
Subject: REXML and XPath Confusion


Rubyists,

I am confused!  (Nothing unusual there! :-)

Using XPath.match, I get an array of attributes.  When I try to
match against this array, with what seems to be the same name,
it doesn't match.  Any ideas?


$ cat test.xml
<?xml version="1.0"?>
<doc>
   <section name="intro">
   <panel name="overview">   </panel>
   <panel name="stuff">  </panel>
   </section>
   <section name="foo">
   </section>
   <section name="bar">
   </section>
</doc>

$ cat test.rb
require "rexml/xpath"
require "rexml/document"
include REXML

doc = Document.new File.new( "test.xml" )

panels = XPath.match( doc, "//panel/attribute::name" )
panels.each { |panel|
   puts "panel --> [#{panel}]"
}
puts "-----"

doc.elements.each("doc/section") { |sect|
   puts "sect --> #{sect.attributes["name"]}"
   sect.elements.each("panel") { |panel|
         name = panel.attributes["name"]
         puts "panel --> [#{name}]"
         puts (panels.include?(name)) ? "included" : "not found"
   }
}

$ ruby test.rb
panel --> [overview]
panel --> [stuff]
-----
sect --> intro
panel --> [overview]
not found
panel --> [stuff]
not found
sect --> foo
sect --> bar


Regards,


-mark.