Resolve "Create a rule that gets the construction date from cadaster data for Tabula dataset."

Closes #20 (closed)

\approve @ds @laurens @chengzhi

building/02_process/tabula/date_from_valencian_cadaster/date_from_valencian_cadaster.py

@@ -13,13 +13,14 @@
 #
 # You should have received a copy of the GNU Affero General Public License
 # along with this program. If not, see http://www.gnu.org/licenses/.
-from databaselib import PostGISDatabase
+
 from rulelib import AbstractRule
 
 
 class DateFromValencianCadasterRule(AbstractRule):
+    from databaselib import AbstractDatabase
 
-    def __call__(self, database: PostGISDatabase, geometry: str, *args, **kwargs):
+    def __call__(self, database: AbstractDatabase, geometry: str, *args, **kwargs):
         """
         A building's geometry is tested for intersection with a cadastral parcel in the source
         database, if there is cadaster data for this location. There is currently only
@@ -34,7 +35,7 @@ class DateFromValencianCadasterRule(AbstractRule):
                 tables `parcels` and `cadaster_buildings`.
             geometry (str):
                 Geometry of the building being currently processed. The geometry is a WKT
-                formatted string wrapped in th `ST_GeomFromText()` function.
+                formatted string wrapped in the `ST_GeomFromText()` function.
 
         Returns:
             Integer that represents the building's construction year.