Deprecated ZODB.interfaces.StorageStopIteration. Storage

iterator implementations should just raise StopIteration, which
means they can now be implemented as generators.

src/ZEO/ClientStorage.py

@@ -1530,7 +1530,7 @@ class TransactionIterator(object):
 
     def next(self):
         if self._ended:
-            raise ZODB.interfaces.StorageStopIteration()
+            raise StopIteration()
 
         if self._iid < 0:
             raise ClientDisconnected("Disconnected iterator")
@@ -1541,7 +1541,7 @@ class TransactionIterator(object):
             # disposed it.
             self._ended = True
             self._storage._forget_iterator(self._iid)
-            raise ZODB.interfaces.StorageStopIteration()
+            raise StopIteration()
 
         return ClientStorageTransactionInformation(
             self._storage, self, *tx_data)
@@ -1582,13 +1582,13 @@ class RecordIterator(object):
         if self._completed:
             # We finished iteration once already and the server can't know
             # about the iteration anymore.
-            raise ZODB.interfaces.StorageStopIteration()
+            raise StopIteration()
         item = self._storage._server.iterator_record_next(self._riid)
         if item is None:
             # The iterator is exhausted, and the server has already
             # disposed it.
             self._completed = True
-            raise ZODB.interfaces.StorageStopIteration()
+            raise StopIteration()
         return ZODB.BaseStorage.DataRecord(*item)
 
 

src/ZODB/tests/IteratorStorage.py

@@ -229,13 +229,9 @@ class IteratorDeepCompare:
             # meaning they were the same length.
             # Additionally, check that we're backwards compatible to the
             # IndexError we used to raise before.
-            self.assertRaises(IndexError, itxn1.next)
-            self.assertRaises(IndexError, itxn2.next)
             self.assertRaises(StopIteration, itxn1.next)
             self.assertRaises(StopIteration, itxn2.next)
         # Make sure ther are no more records left in txn1 and txn2, meaning
         # they were the same length
-        self.assertRaises(IndexError, iter1.next)
-        self.assertRaises(IndexError, iter2.next)
         self.assertRaises(StopIteration, iter1.next)
         self.assertRaises(StopIteration, iter2.next)

src/ZODB/tests/testMappingStorage.py

@@ -13,6 +13,7 @@
 ##############################################################################
 import ZODB.MappingStorage
 import unittest
+import ZODB.tests.hexstorage
 
 
 from ZODB.tests import (
@@ -53,8 +54,16 @@ class MappingStorageTests(
         pass # we don't support undo yet
     checkUndoZombie = checkLoadBeforeUndo
 
+class MappingStorageHexTests(MappingStorageTests):
+
+    def setUp(self):
+        StorageTestBase.StorageTestBase.setUp(self, )
+        self._storage = ZODB.tests.hexstorage.HexStorage(
+            ZODB.MappingStorage.MappingStorage())
+
 def test_suite():
     suite = unittest.makeSuite(MappingStorageTests, 'check')
+    suite = unittest.makeSuite(MappingStorageHexTests, 'check')
     return suite
 
 if __name__ == "__main__":