MultiAppVariableValueSamplePostprocessorTransfer.h

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//* This file is part of the MOOSE framework
//* https://www.mooseframework.org
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html

#pragma once

#include "MultiAppTransfer.h"
#include "MeshChangedInterface.h"

class MultiAppVariableValueSamplePostprocessorTransfer : public MultiAppTransfer,
                                                         public MeshChangedInterface
{
public:
  static InputParameters validParams();

  MultiAppVariableValueSamplePostprocessorTransfer(const InputParameters & parameters);

  virtual void initialSetup() override;

  virtual void execute() override;

  void meshChanged() override;

protected:
  void setupPostprocessorCommunication();

  void cacheElemToPostprocessorData();

  unsigned int getVariableComponent(unsigned int index) const
  {
    return _map_comp_to_child ? index / _apps_per_component : _comp;
  }

  PostprocessorName _postprocessor_name;
  AuxVariableName _var_name;
  unsigned int _comp;
  MooseVariableFieldBase & _var;
  const bool _map_comp_to_child;
  unsigned int _apps_per_component;
  std::vector<unsigned int> _cached_multiapp_pos_ids;

  std::vector<processor_id_type> _postprocessor_to_processor_id;

  std::unordered_set<unsigned int> _needed_postprocessors;
};