From b38e3243cc6d1551483c33a23bd5d3c3f5f38915 Mon Sep 17 00:00:00 2001
From: Chris McDonough <chrism@agendaless.com>
Date: Wed, 30 Sep 2009 06:30:15 +0000
Subject: Don't do lookup if we're going to fail.

---
 repoze/bfg/url.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/repoze/bfg/url.py b/repoze/bfg/url.py
index 40badf5d1..c7b98adfc 100644
--- a/repoze/bfg/url.py
+++ b/repoze/bfg/url.py
@@ -228,8 +228,6 @@ def static_url(path, request, **kw):
 
     .. note:: This feature is new in :mod:`repoze.bfg` 1.1.
     """
-    mapper = getUtility(IRoutesMapper)
-    routes = mapper.get_routes()
     if os.path.isabs(path):
         raise ValueError('Absolute paths cannot be used to generate static '
                          'urls (use a package-relative path or a resource '
@@ -241,6 +239,9 @@ def static_url(path, request, **kw):
         package = caller_package(level=2)
         path = '%s:%s' % (package.__name__, path)
     
+    mapper = getUtility(IRoutesMapper)
+    routes = mapper.get_routes()
+
     for route in routes:
         factory = route.factory
         if factory.__class__ is StaticRootFactory:
-- 
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