Apply factory method to data

app/data/__init__.py

@@ -1,21 +1,38 @@
 """app.data"""
+from ..services.location import LocationService
 from ..services.location.csbs import CSBSLocationService
 from ..services.location.jhu import JhuLocationService
 from ..services.location.nyt import NYTLocationService
 
-# Mapping of services to data-sources.
+class dataSourceFactory():
+    def getDataSource():
+        return LocationService()
+
+class JhuFactory(dataSourceFactory):
+    def getDataSource():
+        return JhuLocationService()
+
+class CSBSFactory(dataSourceFactory):
+    def getDataSource():
+        return CSBSLocationService()
+
+class NYTFactory(dataSourceFactory):
+    def getDataSource():
+        return NYTLcationService()
+
+
+# Mapping of factories to data-sources.
 DATA_SOURCES = {
-    "jhu": JhuLocationService(),
-    "csbs": CSBSLocationService(),
-    "nyt": NYTLocationService(),
+    "jhu": JhuFactory(),
+    "csbs": CSBSFactory(),
+    "nyt": NYTFactory(),
 }
 
-
 def data_source(source):
     """
     Retrieves the provided data-source service.
 
     :returns: The service.
     :rtype: LocationService
     """
-    return DATA_SOURCES.get(source.lower())
+    return DATA_SOURCES.get(source.lower()).getDataSource()