_vote(): Actually, this behavior is shared by both Full and Minimal

storages, so it makes sense to move it from there to the base
class.  _vote() now puts the CommitLog into the promised() state.

lib/python/BDBStorage/BerkeleyBase.py

@@ -25,7 +25,7 @@ from bsddb3 import db
 from ZODB import POSException
 from ZODB.BaseStorage import BaseStorage
 
-# $Revision: 1.4 $
+# $Revision: 1.5 $
 __version__ = '0.1'
 
 
@@ -148,6 +148,11 @@ class BerkeleyBase(BaseStorage):
         # TBD: this is expensive to calculate and many not be necessary.
         return 0
 
+    def _vote(self):
+        # Make a promise to commit all the registered changes.  Rewind and put
+        # our commit log in the PROMISED state.
+        self._commitlog.promise()
+
     def _finish(self, tid, user, desc, ext):
         """Called from BaseStorage.tpc_finish(), this commits the underlying
         BSDDB transaction.