Line data    Source code

       1             : //* This file is part of the MOOSE framework
       2             : //* https://mooseframework.inl.gov
       3             : //*
       4             : //* All rights reserved, see COPYRIGHT for full restrictions
       5             : //* https://github.com/idaholab/moose/blob/master/COPYRIGHT
       6             : //*
       7             : //* Licensed under LGPL 2.1, please see LICENSE for details
       8             : //* https://www.gnu.org/licenses/lgpl-2.1.html
       9             : 
      10             : #pragma once
      11             : 
      12             : #include "ParallelUniqueId.h"
      13             : #include "InputParameters.h"
      14             : #include "FEProblemBase.h"
      15             : 
      16             : // Forward declarations
      17             : class Sampler;
      18             : /**
      19             :  * Interface for objects that need to use samplers.
      20             :  *
      21             :  * This practically adds two methods for getting Sampler objects:
      22             :  *
      23             :  *  1. Call `getSampler` or `getSamplerByName` without a template parameter and you will get
      24             :  *     a `Sampler` base object (see SamplerInterface.C for the template specialization).
      25             :  *  2. Call `getSampler<MySampler>` or `getSamplerByName<MySampler>` to perform a cast to the
      26             :  *     desired type, as done for UserObjects.
      27             :  */
      28             : class SamplerInterface
      29             : {
      30             : public:
      31             :   static InputParameters validParams();
      32             : 
      33             :   /**
      34             :    * @param params The parameters used by the object being instantiated. This
      35             :    *        class needs them so it can get the sampler named in the input file,
      36             :    *        but the object calling getSampler only needs to use the name on the
      37             :    *        left hand side of the statement "sampler = sampler_name"
      38             :    */
      39             :   SamplerInterface(const MooseObject * moose_object);
      40             : 
      41             :   /**
      42             :    * Get a sampler with a given name
      43             :    * @param name The name of the parameter key of the sampler to retrieve
      44             :    * @return The sampler with name associated with the parameter 'name'
      45             :    */
      46             :   template <typename T = Sampler>
      47             :   T & getSampler(const std::string & name);
      48             : 
      49             :   /**
      50             :    * Get a sampler with a given name
      51             :    * @param name The name of the sampler to retrieve
      52             :    * @return The sampler with name 'name'
      53             :    */
      54             :   template <typename T = Sampler>
      55             :   T & getSamplerByName(const SamplerName & name);
      56             : 
      57             : private:
      58             :   /// Parameters of the object with this interface
      59             :   const InputParameters & _si_params;
      60             : 
      61             :   /// Reference to FEProblemBase instance
      62             :   FEProblemBase & _si_feproblem;
      63             : 
      64             :   /// Thread ID
      65             :   THREAD_ID _si_tid;
      66             : };
      67             : 
      68             : template <typename T>
      69             : T &
      70           0 : SamplerInterface::getSampler(const std::string & name)
      71             : {
      72           0 :   return getSamplerByName<T>(_si_params.get<SamplerName>(name));
      73             : }
      74             : 
      75             : template <typename T>
      76             : T &
      77           0 : SamplerInterface::getSamplerByName(const SamplerName & name)
      78             : {
      79           0 :   Sampler * base_ptr = &_si_feproblem.getSampler(name, _si_tid);
      80           0 :   T * obj_ptr = dynamic_cast<T *>(base_ptr);
      81           0 :   if (!obj_ptr)
      82           0 :     mooseError("Failed to find a Sampler object with the name '", name, "' for the desired type.");
      83           0 :   return *obj_ptr;
      84             : }