If your model contains structs that you want to be able to navigate in OCL, here is how to install custom OCL operations to make it work:
First of all, define the struct:
public struct Coord
{
public int x;
public int y;
public int z;
public override string ToString()
{
return string.Format("{0}:{1}:{2}", x, y, z);
}
}
Then add a helper class with a static method for each of the properties:
public struct Coord
{
...
public class CoordOclHelper
{
public static int x(Coord coord) { return coord.x; }
public static int y(Coord coord) { return coord.y; }
public static int z(Coord coord) { return coord.z; }
}
}
Finally, install the helper class as an OCL operation in your EcoSpace:
[Eco.Ocl.Support.EcoOclOperation(typeof(Coord.CoordOclHelper), true)]
public partial class EcoProject42EcoSpace: Eco.Handles.DefaultEcoSpace
{
...
}
This will make the parts available in OCL in runtime, but not in
designtime. You can now write OCL expressions like:
aShape.Points->select(p|p.Coordinate.x > 100)