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From "Graham Dumpleton (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (MODPYTHON-93) Improve util.FieldStorage efficiency
Date Sun, 05 Nov 2006 06:49:17 GMT
     [ http://issues.apache.org/jira/browse/MODPYTHON-93?page=all ]

Graham Dumpleton resolved MODPYTHON-93.
---------------------------------------

    Resolution: Fixed

Not heard of anyone who has specifically tested to see if this works with older versions of
Trac or not, but code passing tests on various Python/Apache versions so that's good enough
for now.

> Improve util.FieldStorage efficiency
> ------------------------------------
>
>                 Key: MODPYTHON-93
>                 URL: http://issues.apache.org/jira/browse/MODPYTHON-93
>             Project: mod_python
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 3.2.7
>            Reporter: Jim Gallacher
>         Assigned To: Graham Dumpleton
>            Priority: Minor
>             Fix For: 3.3
>
>         Attachments: modpython325_util_py_dict.patch
>
>
> Form fields are saved as a list in a FieldStorage class instance. The class implements
a __getitem__ method to provide dict-like behaviour.  This method iterates over the complete
list for every call to __getitem__. Applications that need to access all the fields when processing
the form will show O(n^2) behaviour where n == the number of form fields. This overhead could
be avoided by creating a dict (to use as an index) when the FieldStorage instance is created.
> Mike Looijmans has been investigating StringField and Field as well. It is probably reasonable
to include information on his work in this issue as well, so that we can consider all of these
efficiency issues in toto.

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