fetch an object too many times when in view model

[z...@ejustcn.com]

Hi,
I met an question. If a view model have a property is a domainObject, (eg: 
User.class , ofcouse has title() function).
When show viewmodel as a table, datanucleus will fetch User from database each 
row. even if User object is same.
Same object shoud fetch from L1 cache instead of fetch from database?  

Thanks!
James