Use real enumeration in e.g. Modelica.Mechanics.Rotational.Interfaces.PartialFriction!

[HansOlsson]

The following constants and their use could be replaced by an enumeration:

constant Integer Unknown=3 "Value of mode is not known";
 constant Integer Free=2 "Element is not active";
 constant Integer Forward=1 "w_relfric > 0 (forward sliding)";
 constant Integer Stuck=0
   "w_relfric = 0 (forward sliding, locked or backward sliding)";
 constant Integer Backward=-1 "w_relfric < 0 (backward sliding)";
 Integer mode(
   final min=Backward,
   final max=Unknown,
   start=Unknown,
   fixed=true)
   "Mode of friction (-1: backward sliding, 0: stuck, 1: forward sliding, 2: inactive, 3: unknown)";

The constants seem to occur in
Modelica.Mechanics.Rotational.Components.LossyGear
Modelica.Mechanics.Rotational.Interfaces.PartialFriction
Modelica.Mechanics.Translational.Interfaces.PartialFriction
Modelica.Mechanics.Translational.Components.PartialFrictionWithStop
Modelica.Mechanics.Translational.Components.MassWithStopAndFriction

That was what you meant @DagBruck ?

[tobolar]

Would a conversion script "type conversion from Integer to enumeration" work seamlessly?

And, the range of integer value of mode would change from [-1, 3] to [0, 4] - which probably is no problem, except for regression.

@MartinOtter What do you mean?

[HansOlsson]

Would a conversion script "type conversion from Integer to enumeration" work seamlessly?

I will have to investigate.
However, as far as I understand conversion scripts wont be this time, but for version 5.

[tobolar]

However, as far as I understand conversion scripts wont be this time, but for version 5.

I understand the same way. So set the milestone to 5.0.0?

[DagBruck]

That was what you meant @DagBruck ?

@HansOlsson indeed it was.