lib/sax-machine/sax_document.rb in astro-sax-machine-0.0.14 vs lib/sax-machine/sax_document.rb in astro-sax-machine-0.0.15

@@ -37,11 +37,11 @@
       
       # we only want to insert the getter and setter if they haven't defined it from elsewhere.
       # this is how we allow custom parsing behavior. So you could define the setter
       # and have it parse the string into a date or whatever.
       attr_reader options[:as] unless instance_methods.include?(options[:as].to_s)
-      attr_writer options[:as] unless instance_methods.include?("#{options[:as]}=")
+      attr_writer_once options[:as] unless instance_methods.include?("#{options[:as]}=")
     end
 
     def columns
       sax_config.top_level_elements
     end
@@ -86,9 +86,17 @@
       attr_writer options[:as] unless instance_methods.include?("#{options[:as]}=")
     end
     
     def sax_config
       @sax_config ||= SAXConfig.new
+    end
+
+    def attr_writer_once(attr)
+      class_eval <<-SRC
+          def #{attr}=(val)
+            @#{attr} ||= val
+          end
+        SRC
     end
   end
   
 end