graphviz.rb in rdf-raptor-0.4.2

- old
+ new

@@ -22,16 +22,19 @@
     #   RDF::Format.for(:file_name      => "output.dot")
     #   RDF::Format.for(:file_extension => "dot")
     #   RDF::Format.for(:content_type   => "text/vnd.graphviz")
     #
     # @see http://www.iana.org/assignments/media-types/text/vnd.graphviz
-    class Format < RDF::Raptor::Format
+    class Format < RDF::Format
+      extend RDF::Raptor::Format
+      
       content_type     'text/vnd.graphviz', :aliases => ['application/x-graphviz', 'text/x-graphviz'], :extension => :dot # TODO: also .gv
       content_encoding 'utf-8'
       rapper_format    :dot
 
       writer { RDF::Raptor::Graphviz::Writer }
+      reader { RDF::Raptor::Graphviz::Reader }
     end # Format
 
     ##
     # Graphviz serializer.
     #
@@ -50,7 +53,15 @@
     #   end
     #
     class Writer < RDF::Raptor::Writer
       format RDF::Raptor::Graphviz::Format
     end # Writer
+    
+    ##
+    # Raptor does not implement a Graphviz reader, but we need one in
+    # order for the Format to pass specs. This class should always
+    # raise a NoMethodError to indicate it shouldn't be used.
+    #
+    class Reader
+    end
   end # Graphviz
 end # RDF::Raptor