From 9b99530add7a1dda7c7b0b9229930f197018f9c8 Mon Sep 17 00:00:00 2001
From: Miroslav Stampar <miroslav.stampar@gmail.com>
Date: Wed, 23 Nov 2011 08:14:20 +0000
Subject: [PATCH] minor bug fix

---
 lib/utils/hashdb.py | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/lib/utils/hashdb.py b/lib/utils/hashdb.py
index a77b8390c..ce7ae7f39 100644
--- a/lib/utils/hashdb.py
+++ b/lib/utils/hashdb.py
@@ -22,6 +22,7 @@ class HashDB(object):
         self.filepath = filepath
         self._write_cache = {}
         self._cache_lock = threading.Lock()
+        self._in_transaction = False
 
     def _get_cursor(self):
         threadData = getCurrentThreadData()
@@ -108,7 +109,11 @@ class HashDB(object):
             self.endTransaction()
 
     def beginTransaction(self):
-        self.cursor.execute('BEGIN TRANSACTION')
+        if not self._in_transaction:
+            self.cursor.execute('BEGIN TRANSACTION')
+            self._in_transaction = True
 
     def endTransaction(self):
-        self.cursor.execute('END TRANSACTION')
+        if self._in_transaction:
+            self.cursor.execute('END TRANSACTION')
+            self._in_transaction = False