RDF-raptor-parser

Question

I am trying to parse the rdf file but I am getting error while executing following code in ubuntu

RDF::Reader.open("http://datagraph.org/jhacker/foaf.rdf") do |reader|
  reader.each_statement do |statement|
    puts statement.inspect
  end
end

as

LoadError: Could not open library 'libraptor': libraptor: cannot open shared object file: No such file or directory. Could not open library 'libraptor.so': libraptor.so: cannot open shared object file: No such file or directory

I installed all the required gems:

rdf
rdf-raptor
ffi
rdf-json
rdf-trix

Please help me how to rectify this problem

Answer 1

I suggest you visit http://rdf.rubyforge.org/raptor/ and use the contact info mentioned there such as the mailing list. The error is because the C shared library libraptor.so cannot be found by ruby, so it must have been installed in a non-standard place. I am the author of Raptor but I do not know how rdf-raptor installed Raptor.