Calculable Properties

You can set a property to take a calculable value. For this, on the edit property page, check Calculable and put a script to the field Script. Use a script in OrientDB format.

Examples:

select sum(a, b) as value from MyClass where @rid = ?

select sum(e.salary) as value from Employee e where e.department = ?

In case of calculation just for a current row you can use short notation: sum(a, b) instead of

select sum(a, b) as value from MyClass where @rid = ?