PorousFlowAddBCAction

This action creates PorousFlow-specific boundary conditions. It allow developers to create user friendly syntax for adding more complicated boundary conditions using the following structure:

[PorousFlow]
  [BCs]
    [my_bc]
      type = MyUserFriendlyBC
      parameters
    []
  []
[]

To create a syntax like this, developers have to build a proxy class called MyUserFriendlyBC. This class inherits from MooseObject and will register its own parameters as usual.

Then, in PorousFlowAddBCAction::act() developers check the type of a constructed object and if it matches their type, they build the underlying boundary conditions objects using the MOOSE C++ inferface.

An example of this approach can be seen in (PorousFlowSinkBC)PorousFlowSinkBC which is the user-friendly proxy class and the way it is setup can be seen in PorousFlowAddBCAction.C.