From: Scott Rubin <srubin@...>
Date: 2004-05-12T00:30:33+09:00
Subject: REXML code no longer works

Ok,
	So I have a program that uses REXML.  It works. I have working code. 
But I think something in rexml changed and now my code is broken. 
Either that or my code is broken in such a way that I cannot figure out 
the problem.

What I'm doing is storing xml files then loading the data into an 
object. The code is equivalent to this.

require 'rexml/document'
include REXML

cfg = File.new( "configfile.xml" )
config = Document.new( cfg )
myObj = myObject.new( config.elements[ "//idtag" ] )

If I try just doing

print config.elements[ "//idtag" ]

I get the same error. so it must be caused by something in the Document 
object, maybe its not being made right?  Here is the backtrace.


/usr/lib/ruby/site_ruby/rexml/xpath_parser.rb:75:in `internal_parse': 
undefined method `node_type' for #<REXML::Element:0x40425edc> 
(NoMethodError)
         from /usr/lib/ruby/site_ruby/rexml/xpath_parser.rb:73:in 
`delete_if'
         from /usr/lib/ruby/site_ruby/rexml/xpath_parser.rb:73:in 
`internal_parse'
         from /usr/lib/ruby/site_ruby/rexml/xpath_parser.rb:51:in `match'
         from /usr/lib/ruby/site_ruby/rexml/xpath_parser.rb:303:in `d_o_s'
         from /usr/lib/ruby/site_ruby/rexml/xpath_parser.rb:301:in 
`each_index'
         from /usr/lib/ruby/site_ruby/rexml/xpath_parser.rb:301:in `d_o_s'
         from /usr/lib/ruby/site_ruby/rexml/xpath_parser.rb:294:in 
`descendant_or_self'
         from /usr/lib/ruby/site_ruby/rexml/xpath_parser.rb:220:in 
`internal_parse'
         from /usr/lib/ruby/site_ruby/rexml/xpath_parser.rb:51:in `match'
         from /usr/lib/ruby/site_ruby/rexml/xpath_parser.rb:34:in `parse'
         from /usr/lib/ruby/site_ruby/rexml/xpath.rb:28:in `first'
         from /usr/lib/ruby/site_ruby/1.8/rexml/element.rb:844:in `[]'



It says that node_type is undefined. However, if I look in 
/usr/lib/ruby/site_ruby/rexml/element.rb I can plainly see that 
node_type is indeed defined. I triple checked the XML to make sure it 
was valid.  And no matter which xpath I use it still breaks.  Ideas anyone?

-Scott