From 85bb46f45cd4c1fae3badb4efabe3ff3ce131466 Mon Sep 17 00:00:00 2001
From: Jim Paris <jim@jtan.com>
Date: Tue, 4 Dec 2012 18:57:36 -0500
Subject: [PATCH] Use pytable's createparents flag to avoid having to create
 group structure manually.

---
 nilmdb/nilmdb.py | 13 ++-----------
 1 file changed, 2 insertions(+), 11 deletions(-)

diff --git a/nilmdb/nilmdb.py b/nilmdb/nilmdb.py
index af0ecfd..453bd3f 100644
--- a/nilmdb/nilmdb.py
+++ b/nilmdb/nilmdb.py
@@ -291,16 +291,6 @@ class NilmDB(object):
         if group == '':
             raise ValueError("invalid path")
 
-        # Make the group structure, one element at a time
-        group_path = group.lstrip('/').split("/")
-        for i in range(len(group_path)):
-            parent = "/" + "/".join(group_path[0:i])
-            child = group_path[i]
-            try:
-                self.h5file.createGroup(parent, child)
-            except tables.NodeError:
-                pass
-
         # Get description
         try:
             desc = nilmdb.layout.get_named(layout_name).description()
@@ -314,7 +304,8 @@ class NilmDB(object):
         # Create the table
         table = self.h5file.createTable(group, node,
                                         description = desc,
-                                        expectedrows = exp_rows)
+                                        expectedrows = exp_rows,
+                                        createparents = True)
 
         # Insert into SQL database once the PyTables is happy
         with self.con as con: