Bug inserting RDF-XML based graphs or reader into repositories

[cmarin]

Bug inserting RDF-XML based graphs into repositories.

I am able to insert NTriple based readers into a Sesame repository. However, RDFXML ones cannot be inserted. Here's what I've been trying:
require 'rdf'
require 'rdf/sesame'
require 'rdf/rdfxml'
repository = RDF::Sesame::Repository.new('http://localhost:8080/openrdf-sesame/repositories/test')

Successfully returns count of 47

reader = RDF::NTriples::Reader.new(File.read(RAILS_ROOT + '/public/doap.nt'))
repository.clear
repository.insert(reader)
repository.count

Only returns count of 3

reader = RDF::RDFXML::Reader.new(File.read(RAILS_ROOT + '/public/doap.xml'))
repository = RDF::Sesame::Repository.new('http://localhost:8080/openrdf-sesame/repositories/test')
repository.clear
repository.insert(reader)
repository.count

Graph count returns 47, but insertion into repository fails

stream = File.open(RAILS_ROOT + '/public/doap.xml')
graph = RDF::Graph.new
RDF::RDFXML::Reader.new(stream).each { |s| graph << s }
puts graph.count

Now that we have a graph, insert into repository

This inserts 3 entries, but not the entire 47

repository.clear
repository.insert(graph.to_a)
repository.count

Same thing, returns 3

repository.clear
repository.insert(*graph.to_a)
repository.count

Same thing, returns 3

repository.clear
repository<<graph.to_rdf
repository.count

The << method in writable.rb looks like it detects a graph and then

calls insert_graph, but none of these seem to work either

repository<<graph
repository.insert(graph)
repository.insert(graph.to_ntriples)
repository.insert(_graph.to_ntriples)
graph.each { |s| repository << s }
graph.each { |s| repository.insert(_s) }
graph.each { |s| repository.insert(s) }

stream = File.open(RAILS_ROOT + '/public/doap.xml')
graph = RDF::Graph.new
RDF::RDFXML::Reader.new(stream).each { |s| graph << s }
reader = RDF::NTriples::Reader.new(graph.to_ntriples)
repository.insert(reader)

I am able to get this to work with the RDF Context gem:
require 'rdf'
require 'rdf/sesame'
require 'rdf_context'
url = "http://localhost:8080/openrdf-sesame/repositories/test"
repository = RDF::Sesame::Repository.new(url)

The doap.xml file fails but rdf.xml does get parsed correctly

f = File.open(RAILS_ROOT + '/public/rdf.xml')
graph = RdfContext::Graph.new
graph.parse(f.read, nil, :type => :rdfxml)

statements = RDF::NTriples::Reader.new(graph.to_ntriples)
repository.insert(*statements)
repository.count
repository.clear!