[ANN] Ruby-rdf

Hi folks,

I have put up an initial version of ruby-rdf. on Rubyforge.  
http://rubyforge.org/projects/ruby-rdf/.  I haven't
released any files yet because I am still working out how to use Rake  
and rubyforge but you should be able to download
from CVS.

ruby-rdf is a wrapper around the Redland RDF Application Framework.   
http://www.redland.opensource.ac.uk/

This versions needs the installation of redland installed with ruby  
support
./configure --with-ruby
make
make install



Here's some examples from one of the unit tests

require 'test/unit'
require 'rdf'
require 'rdf/constants'
require 'rdf/model'

class TestModel < Test::Unit::TestCase

   def setup
     @foaf = Namespace.new('http://xmlns.com/foaf/0.1/')
     @faa = Namespace.new("http://www.faa.gov/faa#")
   end

   def test_initialize()
     model = Model.new()
     assert_equal(0,model.size)
     st =  
Statement.new(Uri.new("http://foo"),Uri.new("http://bar"),"baz")
     st2 =  
Statement.new(Uri.new("http://xmlns/"),Uri.new("http://name"),"bar")
     model.add_statement(st)
     model.add_statement(st2)
     assert_equal(2,model.size)
   end

   def test_api()
     model = Model.new()
      
model.add_statement(Statement.new(@faa['[e-mail]'],@foaf['name'],"Do 
minic"))
     model.add_statement  
Statement.new(@faa['kris'],@foaf['firstName'],"Kris")
     model.add_statement  
Statement.new(@faa['kris'],@foaf['phone'],"333-123-2387")
     model.add(@faa['kris'],@foaf['name'],"Kris Frame")
     model.add( Uri.new('dom'),Uri.new('project'),'2334')
     domnode = model.subject(@foaf['name'],"Dominic")
     assert_equal(@faa['[e-mail]'], domnode)
      
assert_equal('333-123 
-2387',model.object(@faa['kris'],@foaf['phone']).to_s)
     model.predicates(@faa['kris'],"Kris"){|p| puts p }
     model.triples{|s,p,o| puts "subject: #{s}, pred: #{p}, object:  
#{o}"}
     model.find( nil,@foaf['name'],nil){|s,p,o| puts o }
     serializer = Serializer.new()
      
serializer.to_file('out2.rdf',model,Uri.new("http://www.faa.gov/ 
people#"))
     #  serializer.namespace(@foaf,'foaf') # not working yet


   end

   def test_delete()
     model = Model.new()
     dom = BNode.new('dom')
     model.add(dom,@foaf['firstName'],'Dominic')
     model.add(dom,@foaf['surname'],'Sisneros')
     assert_equal(2,model.size)
     st = Statement.new(dom,@foaf['firstName'],'Dominic')
     assert(model.include?(st))
     model.delete_statement(st)
     assert(!model.include_statement?(st),"model should not include  
statement")
     assert_equal(1,model.size)
     model.delete(dom,@foaf['surname'],'Bogus')
     assert_equal(1,model.size)
     model.delete(dom,@foaf['surname'],'Sisneros')
     assert_equal(0,model.size)
   end

   def testadd_statements(model)
     dom = BNode.new('dom')
     kris = BNode.new('kris')
     model.add(dom,@foaf['firstName'],'Dominic')
     model.add(dom,@foaf['surname'],'Sisneros')
     model.add_statement Statement.new(kris,@foaf['firstName'],"Kris")
     model.add_statement  
Statement.new(kris,@foaf['phone'],"425-227-2387")
   end

   def test_delete()
     model = Model.new
     dom = BNode.new('dom')
     kris = BNode.new('kris')
     model.add(dom,@foaf['firstName'],'Dominic')
     model.add(dom,@foaf['surname'],'Sisneros')
     model.add_statement Statement.new(kris,@foaf['firstName'],"Kris")
     model.add_statement Statement.new(kris,@foaf['phone'],"192-192-192")
     assert_equal(4,model.size)
     delete_statements = []
     model.find(dom,nil,nil){|s,p,o| delete_statements <<  
Statement.new(s,p,o)}
     delete_statements.each{|st| model.delete_statement(st)}
      assert_equal(2,model.size)
   end

end