Responded to some reviewer comments

Stashing current commits to rebase to master.

python/lsst/ap/association/assoc_db_sqlite.py

@@ -29,8 +29,10 @@
 import lsst.afw.geom as afwGeom
 import lsst.pex.config as pexConfig
 import lsst.pipe.base as pipeBase
-from .dia_collection import *
-from .dia_object import *
+from .dia_collection import DIAObjectCollection
+from .dia_object import DIAObject, \
+                        make_minimal_dia_object_schema, \
+                        make_minimal_dia_source_schema
 
 
 __all__ = ["AssociationDBSqliteConfig", "AssociationDBSqliteTask"]
@@ -108,20 +110,19 @@ class AssociationDBSqliteTask(pipeBase.Task):
     _DefaultName = "association_db_sqlite"
 
     def __init__(self, **kwargs):
-        """ Create a new connection to the sqlite database specified in
-        the config.
-        """
+
         pipeBase.Task.__init__(self, **kwargs)
         self.indexer = IndexerRegistry[self.config.indexer.name](
             self.config.indexer.active)
         self._db_connection = sqlite3.connect(self.config.db_name)
         self._db_cursor = self._db_connection.cursor()
 
     def run(self):
-        """ Not implemented in this subtask. Please use the store and load
-        methods.
+        """ This subtask does not make use of the run method for Tasks.
+
+        Please use the store or load methods.
         """
-        Raise(NotImplementedError)
+        return None
 
     def commit(self):
         """ Save changes to the sqlite database.