[Zope-Checkins] SVN: Products.Five/branches/1.3/site/metaconfigure.py * only register site hooks once per class

[Rob Miller]

Log message for revision 71334:
  * only register site hooks once per class
  

Changed:
  U   Products.Five/branches/1.3/site/metaconfigure.py

-=-
Modified: Products.Five/branches/1.3/site/metaconfigure.py
===================================================================
--- Products.Five/branches/1.3/site/metaconfigure.py	2006-11-29 21:50:36 UTC (rev 71333)
+++ Products.Five/branches/1.3/site/metaconfigure.py	2006-11-30 00:02:17 UTC (rev 71334)
@@ -43,7 +43,11 @@
         if not IPossibleSite.implementedBy(site_class):
             raise ConfigurationError('Site class does not implement '
                                      'IPossibleClass: %s' % site_class)
-    if site_class is not None:
+    # only install the hook once
+    already = getattr(class_, '_localsite_marker', False)
+
+    if site_class is not None and not already:
+        class_._localsite_marker = True
         _context.action(
             discriminator = (class_,),
             callable = classSiteHook,
@@ -63,6 +67,8 @@
         delattr(class_, 'setSiteManager')
         classImplementsOnly(class_, implementedBy(class_)-IPossibleSite)
         _localsite_monkies.remove(class_)
+        if getattr(class_, '_localsite_marker', False):
+            delattr(class_, '_localsite_marker')
 
 from zope.testing.cleanup import addCleanUp
 addCleanUp(uninstallSiteHooks)