documentation.lsfusion.org will be shutting down soon, use https://docs.lsfusion.org instead please.

Skip to end of metadata
Go to start of metadata

In certain situations, you may want to use the same name for different system properties or actions. 

For example, let's create two properties named sum: one of them will calculate the sum of the order line, and the second will calculate the sum of the entire order:

1
2
 sum = DATA NUMERIC[10,2] (OrderDetail);
sum = GROUP SUM sum(OrderDetail od) BY order(od);

Accordingly, the first property gets one parameter of the OrderDetail class as input while the second gets one parameter of the Order class.

But if we create, for example, a constraint with one parameter and then try to refer to the sum property without explicitly specifying the class of this parameter, an error will occur:

All such references require an explicitly specified class:

1
 CONSTRAINT sum(Order o) < 0 MESSAGE 'The order amount must be positive';



  • No labels