put sara_type back in GnomeOil for TAMOC

Author: ChrisBarker-NOAA

py_gnome/gnome/spills/gnome_oil.py

@@ -112,13 +112,12 @@ class GnomeOilSchema(SubstanceSchema):
     boiling_point = NumpyArraySchema(missing=drop, save=True, update=True)
     molecular_weight = NumpyArraySchema(missing=drop, save=True, update=True)
     component_density = NumpyArraySchema(missing=drop, save=True, update=True)
-#     sara_type = SequenceSchema(SchemaNode(String()),
-#                                missing=drop,
-#                                save=True,
-#                                update=True)
+    sara_type = SequenceSchema(SchemaNode(String()),
+                               missing=drop,
+                               save=True,
+                               update=True)
     num_components = SchemaNode(Int(), missing=drop, save=True, update=True)
 
-
 class GnomeOil(Substance):
     """
     Class to create an oil for use in Gnome
@@ -292,11 +291,11 @@ def _init_from_json(self,
         self._set_pc_values('boiling_point', boiling_point)
         self._set_pc_values('component_density', component_density)
 
-        # if len(sara_type) == self.num_components:
-        #     self.sara_type = sara_type
-        # else:
-        #     raise ValueError("You must have the same number of sara_type "
-        #                      "as PCs")
+        if len(sara_type) == self.num_components:
+            self.sara_type = sara_type
+        else:
+            raise ValueError("You must have the same number of sara_type "
+                             "as PCs")
 
         self._k_v2 = None  # decay constant for viscosity curve
         self._visc_A = None  # constant for viscosity curve