Alter get_maintainer API to return Maintainer object or None

Signed-off-by: NChris Lamb <lamby@debian.org>

dak/rm.py

@@ -457,7 +457,7 @@ def main ():
 
     maintainer_list = []
     for maintainer_id in maintainers.keys():
-        maintainer_list.append(get_maintainer(maintainer_id))
+        maintainer_list.append(get_maintainer(maintainer_id).name)
     summary = ""
     removals = d.keys()
     removals.sort()

daklib/dbconn.py

@@ -1097,13 +1097,14 @@ __all__.append('get_or_set_maintainer')
 
 def get_maintainer(maintainer_id, session=None):
     """
-    Return the name of the maintainer behind C{maintainer_id}.
+    Return the name of the maintainer behind C{maintainer_id} or None if that
+    maintainer_id is invalid.
 
     @type maintainer_id: int
     @param maintainer_id: the id of the maintainer
 
-    @rtype: string
-    @return: the name of the maintainer
+    @rtype: Maintainer
+    @return: the Maintainer with this C{maintainer_id}
     """
 
     privatetrans = False
@@ -1112,7 +1113,7 @@ def get_maintainer(maintainer_id, session=None):
         privatetrans = True
 
     try:
-        return session.query(Maintainer).get(maintainer_id).name
+        return session.query(Maintainer).get(maintainer_id)
     finally:
         if privatetrans:
             session.close()