routing: SetAllowedVehiclesForIndex not working in C# wrappers (changed C++ signature)

[armeniomiranda-dev]

Version: v9.15
Language: C#

Routing Solver

Windows

After updating to 9.15 i saw this error in my code in SetAllowedVehiclesForIndex

I have searched and saw that it has changed

How to fix it for using 9.15?

Regards

[Mizux]

1. Need to support absl::Span in our SWIG wrapper

2. Add test to Routing to verify AllowedVehcileForIndex API is usable...

3. Check Java and Python pretty sure we will have the same kind of issue...

ref:

or-tools/ortools/constraint_solver/routing.h

Lines 1003 to 1008 in b21a132

	/// Sets the vehicles which can visit a given node. If the node is in a
	/// disjunction, this will not prevent it from being unperformed.
	/// Specifying an empty vector of vehicles has no effect (all vehicles
	/// will be allowed to visit the node).
	void SetAllowedVehiclesForIndex(absl::Span<const int> vehicles,
	int64_t index);

[armeniomiranda-dev]

Thanks for the explanation! Currently, this means the API doesn’t work in C# right? Is there something I could help with in the meantime?

[armeniomiranda-dev]

lperron the bug is only in c#? In Java and python it works? Are you planning to make a release with fix soon or just in April (referring the new 9.16 milestone)?

[Grenby]

Python has the same problem:
Code

routing.SetAllowedVehiclesForIndex([1], manager.NodeToIndex(1))

Error

SetAllowedVehiclesForIndex
    return _pywrapcp.RoutingModel_SetAllowedVehiclesForIndex(self, vehicles, index)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: in method 'RoutingModel_SetAllowedVehiclesForIndex', argument 2 of type 'absl::Span< int const >'