column.rb in spread2rdf-0.1.4

- old
+ new

@@ -1,9 +1,10 @@
 module Spread2RDF
   module Schema
     class Column < Element
       include StatementMapping
+      include ResourceCreation
 
       self.attributes = {
           predicate:  nil,
           object:     nil,
           statement:  nil
@@ -29,11 +30,11 @@
         end
         values
       end
 
       def self.resolve_data_sources(data_sources)
-        return [data_sources] unless data_sources.is_a? Array
+        data_sources = [data_sources] unless data_sources.is_a? Array
         data_sources.map do |data_source|
           case
             when (uri = data_source).is_a?(RDF::URI) || (uri = RDF::URI.new(data_source)).valid?
               raise NotImplementedError, "resolving of uris is not implemented yet"
             when data_source.is_a?(String) && !(file = File.in_path(data_source)).nil?
@@ -59,9 +60,13 @@
           when !object[:from].nil?      then :resource_ref
           when !object[:language].nil?  then :to_string
           else
             raise "mapping specification error: don't know how to map #{self}"
         end
+      end
+
+      def resource_creation_attributes
+        object
       end
 
       def cell_mapping
         object if object.is_a?(Proc)
       end