Bugs Fixed

----------

- The helper function ZODB.blob.is_blob_record didn't handle having
  None passed to it, but database "delete" records have None for their
  data.

src/CHANGES.txt

@@ -2,6 +2,17 @@
  Change History
 ================
 
+3.9.0c3 (2009-09-01)
+====================
+
+Bugs Fixed
+----------
+
+- The helper function ZODB.blob.is_blob_record didn't handle having
+  None passed to it, but database "delete" records have None for their
+  data.
+
+
 3.9.0c2 (2009-09-01)
 ====================
 

src/ZODB/blob.py

@@ -946,7 +946,7 @@ def is_blob_record(record):
     storage to another.
 
     """
-    if 'ZODB.blob' in record:
+    if record and ('ZODB.blob' in record):
         unpickler = cPickle.Unpickler(cStringIO.StringIO(record))
         unpickler.find_global = find_global_Blob
 

src/ZODB/tests/testblob.py

@@ -511,6 +511,11 @@ def is_blob_record():
     >>> ZODB.blob.is_blob_record('cWaaaa\nC\nq\x01.')
     False
 
+    As does None, which may occur in delete records:
+
+    >>> ZODB.blob.is_blob_record(None)
+    False
+
     >>> db.close()
     """