From b0bc1823c58307ce0069ff143f28081cade053ec Mon Sep 17 00:00:00 2001
From: Darafei Praliaskouski <komzpa@gmail.com>
Date: Fri, 20 Jul 2012 02:37:22 +0300
Subject: [PATCH] performance issue on highzoom

---
 src/libkomapnik.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/libkomapnik.py b/src/libkomapnik.py
index 22a58ac..d0c56d5 100644
--- a/src/libkomapnik.py
+++ b/src/libkomapnik.py
@@ -321,7 +321,11 @@ def xml_layer(type="postgis", geom="point", interesting_tags = "*", sql = "true"
     intersection_SQL = '<Parameter name="intersect_max_scale">1</Parameter>'
   elif zoom > 16:
     intersection_SQL = '<Parameter name="intersect_min_scale">500000000000</Parameter>'
+  
+    
   if type == "postgis":
+    if zoom >= 5:
+        sql = '('+ sql + ') and way &amp;&amp; !bbox!'
     interesting_tags = list(interesting_tags)
     if '"' not in "".join(interesting_tags) and "->" not in "".join(interesting_tags):
       interesting_tags = "\", \"".join(interesting_tags)