1 files changed, 13 insertions, 1 deletions
diff --git a/lib/utils/rdf/dataset.rb b/lib/utils/rdf/dataset.rb
index e101b67..2cb32a9 100644
--- a/lib/utils/rdf/dataset.rb
+++ b/lib/utils/rdf/dataset.rb
@@ -47,7 +47,7 @@ module OpenTox
     # Query a dataset URI for ordered status 
     # by loading its metadata (OpenTox compliant)
     # @param [String] uri Dataset uri
-    # @return [TrueClass,FalseClass] status Whether the dataset is ordered
+    # @return [TrueClass, FalseClass] status Whether the dataset is ordered
     def self.ordered?(uri)
       ds = OpenTox::Dataset.new # dummy 
       ds.parse_rdfxml(RestClient.get([uri,"metadata"].join("/"),{:accept => "application/rdf+xml"}))
@@ -57,5 +57,17 @@ module OpenTox
       query.execute(ds.rdf).size>0
     end
 
+    # Load dataset URI from given RDF (slow)
+    # @param [String] rdf RDF
+    # @return [String] uri URI
+    def self.uri_from_rdf(rdf)
+      ds = OpenTox::Dataset.new # dummy 
+      ds.parse_rdfxml(rdf)
+      query = RDF::Query.new do
+        pattern [:dataset, RDF.type, RDF::OT.Dataset]
+      end
+      query.execute(ds.rdf).collect { |s| s.dataset.to_s }[0]
+    end
+
   end
 end