From c2e7f3b51b2ea2dab56d0ee394733c2a8bb6127b Mon Sep 17 00:00:00 2001
From: Fabio Erculiani <lxnay@sabayon.org>
Date: Fri, 24 Sep 2010 14:27:59 +0200
Subject: [PATCH] [entropy.db] EntropyRepository: small sqlite3 performance
 improvement, make it store temp tables in RAM

---
 libraries/entropy/db/__init__.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libraries/entropy/db/__init__.py b/libraries/entropy/db/__init__.py
index a3c378aa0..140f38e6f 100644
--- a/libraries/entropy/db/__init__.py
+++ b/libraries/entropy/db/__init__.py
@@ -514,6 +514,10 @@ class EntropyRepository(EntropyRepositoryBase):
             # !!! enable foreign keys pragma !!! do not remove this
             # otherwise removePackage won't work properly
             cursor.execute("pragma foreign_keys = 1")
+            # setup temporary tables and indices storage
+            # to in-memory value
+            # http://www.sqlite.org/pragma.html#pragma_temp_store
+            cursor.execute("pragma temp_store = 2")
             self.__cursor_cache[c_key] = cursor
             # memory databases are critical because every new cursor brings
             # up a totally empty repository. So, enforce initialization.