[Zope-CMF] howto avoid loading of datetime-objects when accessing a portal_catalog brain

[Joachim Schmitz]

Hi,

If one iterates over the result of a portal_catalog search, for each 
brain there are about 8 datetime objects loaded (one for each 
dateindex), which quickly fills the memory.
how can I access only the brain id, or postpone the loading of the 
datetime objects until I really access them ?

-- 
Gruß Joachim