remove_namespace! doesn't work in pure java version

[Zindar]

The following code gives an error in pure java version but works fine in MRI.

require 'rubygems'
require 'nokogiri'

xml = <<EOF
<?xml version="1.0"?>
<MetadataDocument xmlns="http://bagfors.nu/schema/test">
    <field>
      <name>Title</name>
      <value>Generic</value>
    </field>
</MetadataDocument>
EOF
doc = Nokogiri::XML xml
puts doc
doc.remove_namespaces!

In jruby it gives:
    null:-1:in `setName': org.w3c.dom.DOMException: NAMESPACE_ERR: An attempt is made to create or change an object in a way which is incorrect with regard to namespaces.
        from null:-1:in `rename'
        from null:-1:in `renameNode'
        from XmlDocument.java:354:in `removeNamespceRecursively'
        from XmlDocument.java:360:in `removeNamespceRecursively'
        from XmlDocument.java:340:in `remove_namespaces'
        from XmlDocument$i$0$0$remove_namespaces.gen:65535:in `call'
        from CachingCallSite.java:292:in `cacheAndCall'
        from CachingCallSite.java:135:in `call'
        from /Users/erik/nokogiri-test.rb:15:in `__file__'
        from /Users/erik/nokogiri-test.rb:-1:in `load'
        from Ruby.java:671:in `runScript'
        from Ruby.java:575:in `runNormally'
        from Ruby.java:424:in `runFromMain'
        from Main.java:278:in `doRunFromMain'
        from Main.java:198:in `internalRun'
        from Main.java:164:in `run'
        from Main.java:148:in `run'
        from Main.java:128:in `main'

This is jruby 1.6.3 and nokogiri 1.5.0 java.

[yokolet]

Fixed in rev. e761784

In Java, namespace declaration is an attribute node. So, when attribute's name is "xmlns," that node should be removed in this case.

Thanks for reporting and giving a good sample.

[brodock]

could you please generate a new java's gem version, as the lastest one (1.5.0) doesn't include this essential fix?

[steeve]

+1 ! thanks!

[flavorjones]

There are currently still other open issues blocking a 1.5.1 release, particularly for JRuby. We're trying to get things cleaned up as quickly as we can. Thanks for your patience.

[joegoggins]

Though it will indeed be sweet to have the remove_namespaces! method working in the 1.5.1 release, you can easily get around this problem by not using the remove_namespaces! method
See documentation on "Namespaces" here: http://nokogiri.org/tutorials/searching_a_xml_html_document.html

in 10 minutes I was able to circumvent my problem, my code essentially went from:

doc = Nokogiri::XML.parse(self.response.body)
doc.remove_namespaces!
doc.xpath('//DARWIN_JOBS').children........

TO

doc = Nokogiri::XML.parse(response.body)
relevant_elements = doc.xpath('//poo:DARWIN_JOBS','poo' => 'http://SOME_URL_YOU_TAKE_OUT_OF_THE_xmlns_attribute_OF_A_PARENT_ELEMENT')
relevant_elements.children......