[Pellet-users] Derived properties

[Christina Tziviskou]

Dear Evren,
thank you for the previous answers.

I also have some more questions about using the Pellet API for 
expressing restrictions on properties.

(1) I wanna express that for a class::Product the *property::goodSeller* 
has value the value of the *property::name* of the class::Person that is 
related to the class::Product thru the *sells* relation.

(2) I wanna express the previous requirement under certain conditions, 
e.g. when the count(self.sells.Person)>10 for a given instance of the 
class::Product

(3) Can I express similar requirements with operators like sum, min, max 
and average?

thank you,
christina