From: 7stud -- <bbxx789_05ss@...>
Date: 2009-03-19T05:17:17+09:00
Subject: Re: REXML get specific element

The following code works when the user types in John or Joh'n but not 
Joh"n:

<xml version="1.0" encoding="ISO-8859-1"?>
<programmers>
        <programmer age="50">Joh'n</programmer>
        <programmer age="30">John</programmer>
        <programmer age="20">Joh"n</programmer>
</programmers>


require 'rexml/document'
include REXML

f = File.new('xml4.xml')
doc = Document.new(f)

input_name = gets
input_name = input_name.chomp
p input_name

target = XPath.match(doc, "//programmer[text() = \"#{input_name}\"]")
p target

puts target[0].attributes["age"]


$ruby r1test.rb
Joh"n
"Joh\"n"
/usr/lib/ruby/1.8/rexml/xpath_parser.rb:124:in `internal_parse': 
undefined method `node_type' for "Joh":String (NoMethodError)
        from /usr/lib/ruby/1.8/rexml/xpath_parser.rb:123:in `each'
        from /usr/lib/ruby/1.8/rexml/xpath_parser.rb:123:in 
`internal_parse'
        from /usr/lib/ruby/1.8/rexml/xpath_parser.rb:49:in `match'
        from /usr/lib/ruby/1.8/rexml/xpath_parser.rb:402:in `Predicate'
        from /usr/lib/ruby/1.8/rexml/xpath_parser.rb:346:in `Predicate'
        from /usr/lib/ruby/1.8/rexml/xpath_parser.rb:204:in 
`internal_parse'
        from /usr/lib/ruby/1.8/rexml/xpath_parser.rb:199:in `times'
        from /usr/lib/ruby/1.8/rexml/xpath_parser.rb:199:in 
`internal_parse'
         ... 9 levels...
        from /usr/lib/ruby/1.8/rexml/xpath_parser.rb:49:in `match'
        from /usr/lib/ruby/1.8/rexml/xpath_parser.rb:34:in `parse'
        from /usr/lib/ruby/1.8/rexml/xpath.rb:59:in `match'
        from r1test.rb:11

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