From 541dd3e38e8bcd08b5d76ffb8411f7627aa80b6e Mon Sep 17 00:00:00 2001
From: Damien Elmes <git@ichi2.net>
Date: Sat, 18 Apr 2009 02:39:18 +0900
Subject: [PATCH] improve speed of tagIds()

---
 anki/tags.py | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/anki/tags.py b/anki/tags.py
index a8814bf3c..dd72c7d91 100644
--- a/anki/tags.py
+++ b/anki/tags.py
@@ -47,7 +47,14 @@ insert or ignore into tags
     return s.scalar("select id from tags where tag = :tag", tag=tag)
 
 def tagIds(s, tags):
+    "Return an ID for all tags, creating if necessary."
     ids = {}
+    s.statements("insert or ignore into tags (tag) values (:tag)",
+                [{'tag': t} for t in tags])
+    tagsD = dict(s.all("""
+select lower(tag), id from tags
+where tag in (%s)""" % ",".join([
+        "'%s'" % t.replace("'", "''") for t in tags])))
     for tag in tags:
-        ids[tag.lower()] = tagId(s, tag)
+        ids[tag.lower()] = tagsD[tag.lower()]
     return ids