ElementVariablePostprocessor.h

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//* This file is part of the MOOSE framework
//* https://mooseframework.inl.gov
//*
//* 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 "ElementPostprocessor.h"
#include "MooseVariableInterface.h"
 
class ElementVariablePostprocessor : public ElementPostprocessor,
                                     public MooseVariableInterface<Real>
{
public:
  static InputParameters validParams();
 
  ElementVariablePostprocessor(const InputParameters & parameters);
 
  virtual void execute() override;
 
protected:
  virtual void computeQpValue() = 0;
 
  const VariableValue & _u;
 
  const VariableGradient & _grad_u;
 
  unsigned int _qp;
};