Title: Results class optimization

At: http://classic.zope.org:8080/Collector/Collector/2141/sview

Submitter:  John Eikenberry

Email:  jae@kavi.com

Description: We have a large query implemented via a SQL Method. We've
been messing with it to get the most speed out of it, and noticed a
large hit in the __init__() method on the Results class. We found that
with this simple tweak (see included patch) we got around a 180% speed
up. Not a ton, but pretty good for changing 3 lines of code.

lib/python/Shared/DC/ZRDB/Results.py

@@ -140,8 +140,9 @@ class Results:
             'Result record class'               
 
         r.__record_schema__=schema
-        for k in filter(lambda k: k[:2]=='__', Record.__dict__.keys()):
-            setattr(r,k,getattr(Record,k))
+        for k in Record.__dict__.keys():
+            if k[:2]=='__':
+                setattr(r,k,getattr(Record,k))
 
         # Add SQL Aliases
         d=r.__dict__