@@ -96,8 +96,9 @@ def store_async(self, reader):
 class PureRootPathDB(RootPathDB):
 
 	def __init__(self, root_path):
-		super(PureRootPathDB, self).__init__(root_path)
 		self._root_path = root_path
+		super(PureRootPathDB, self).__init__(root_path)
+		
 
 
 	#{ Interface 
@@ -127,8 +128,8 @@ class PureCompoundDB(CompoundDB, PureObjectDBR, LazyMixin, CachingDB):
 	def _set_cache_(self, attr):
 		if attr == '_dbs':
 			self._dbs = list()
-		elif attr == '_db_cache':
-			self._db_cache = dict()
+		elif attr == '_obj_cache':
+			self._obj_cache = dict()
 		else:
 			super(PureCompoundDB, self)._set_cache_(attr)
 
@@ -138,14 +139,14 @@ def _db_query(self, sha):
 		# most databases use binary representations, prevent converting 
 		# it everytime a database is being queried
 		try:
-			return self._db_cache[sha]
+			return self._obj_cache[sha]
 		except KeyError:
 			pass
 		# END first level cache
 
 		for db in self._dbs:
 			if db.has_object(sha):
-				self._db_cache[sha] = db
+				self._obj_cache[sha] = db
 				return db
 		# END for each database
 		raise BadObject(sha)
@@ -181,7 +182,7 @@ def databases(self):
 
 	def update_cache(self, force=False):
 		# something might have changed, clear everything
-		self._db_cache.clear()
+		self._obj_cache.clear()
 		stat = False
 		for db in self._dbs:
 			if isinstance(db, CachingDB):
@@ -191,8 +192,6 @@ def update_cache(self, force=False):
 		return stat
 
 	def partial_to_complete_sha_hex(self, partial_hexsha):
-		databases = self.databases()
-		
 		len_partial_hexsha = len(partial_hexsha)
 		if len_partial_hexsha % 2 != 0:
 			partial_binsha = hex_to_bin(partial_hexsha + "0")
 
@@ -38,7 +38,7 @@
 __all__ = ('PureGitODB', 'PurePartialGitDB', 'PureCompatibilityGitDB')
 
 
-class PureGitODB(PureRootPathDB, PureObjectDBW, PureCompoundDB):
+class PureGitODB(PureRootPathDB, PureObjectDBW, PureCompoundDB, PureAlternatesFileMixin):
 	"""A git-style object-only database, which contains all objects in the 'objects'
 	subdirectory.
 	:note: The type needs to be initialized on the ./objects directory to function, 
@@ -105,7 +105,7 @@ def set_ostream(self, ostream):
 
 class PurePartialGitDB(PureGitODB, 
 				PureRepositoryPathsMixin, PureConfigurationMixin, 
-				PureReferencesMixin, PureSubmoduleDB, PureAlternatesFileMixin, 
+				PureReferencesMixin, PureSubmoduleDB, 
 				PureIndexDB, PureTransportDB
 				# HighLevelRepository  Currently not implemented !
 				):
 
@@ -31,8 +31,8 @@ def _update_dbs_from_ref_file(self):
 		dbcls = self.ObjectDBCls
 		if dbcls is None:
 			# late import
-			from complex import PureGitODB	# TODO: This should be a configurable for flexibility
-			dbcls = PureGitODB
+			import complex
+			dbcls = complex.PureGitODB
 		# END get db type
 
 		# try to get as many as possible, don't fail if some are unavailable