Rev 20: Handle when the only node is a leaf node in http://bzr.arbash-meinel.com/plugins/index2

[John Arbash Meinel]

At http://bzr.arbash-meinel.com/plugins/index2

------------------------------------------------------------
revno: 20
revision-id: john at arbash-meinel.com-20080702162254-tgks103u1pyz2fl6
parent: john at arbash-meinel.com-20080702161654-vnxiym2kv1ygtxn6
committer: John Arbash Meinel <john at arbash-meinel.com>
branch nick: index2
timestamp: Wed 2008-07-02 11:22:54 -0500
message:
  Handle when the only node is a leaf node
-------------- next part --------------
=== modified file 'btree_index.py'
--- a/btree_index.py	2008-07-02 16:16:54 +0000
+++ b/btree_index.py	2008-07-02 16:22:54 +0000
@@ -562,8 +562,10 @@
 
         if self._use_blooms:
             global bloom_hits
-            node = self._get_node(0)
-            bloom_raw_offsets = node.bloom.get_raw_offsets(keys)
+            if len(self._row_lengths) > 1:
+                # no internal nodes, and thus no blooms in a length-1 b+tree.
+                node = self._get_node(0)
+                bloom_raw_offsets = node.bloom.get_raw_offsets(keys)
         for row_length in self._row_lengths[:-1]:
             node_indexes = [idx for idx, s_keys in nodes_and_keys]
             nodes = self._get_nodes(node_indexes)