ObsOpBaseQG.h

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/*
 * (C) Copyright 2017-2018 UCAR
 *
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
 */
 
#ifndef QG_MODEL_OBSOPBASEQG_H_
#define QG_MODEL_OBSOPBASEQG_H_
 
#include <map>
#include <memory>
#include <string>
 
#include <boost/noncopyable.hpp>
 
#include "eckit/config/Configuration.h"
 
#include "oops/base/Variables.h"
#include "oops/util/abor1_cpp.h"
#include "oops/util/DateTime.h"
#include "oops/util/Printable.h"
 
#include "oops/qg/ObsSpaceQG.h"
 
namespace qg {
class GomQG;
class LocationsQG;
class ObsBias;
class ObsVecQG;
 
// -----------------------------------------------------------------------------
/// Base class for observation operators
 
class ObsOpBaseQG : public util::Printable,
                    private boost::noncopyable {
 public:
  ObsOpBaseQG() = default;
 
/// Obs Operator
  virtual void simulateObs(const GomQG &, ObsVecQG &, const ObsBias &) const = 0;
 
/// Other
  virtual const oops::Variables & requiredVars() const = 0;  // Required from Model
  virtual std::unique_ptr<LocationsQG> locations(const util::DateTime &,
                                       const util::DateTime &) const = 0;
 
 private:
  virtual void print(std::ostream &) const = 0;
};
 
// -----------------------------------------------------------------------------
 
/// Obs Operator Factory
class ObsOpFactory {
 public:
  static ObsOpBaseQG * create(const ObsSpaceQG &, const eckit::Configuration &);
  virtual ~ObsOpFactory() = default;
 protected:
  explicit ObsOpFactory(const std::string &);
 private:
  virtual ObsOpBaseQG * make(const ObsSpaceQG &, const eckit::Configuration &) = 0;
  static std::map < std::string, ObsOpFactory * > & getMakers() {
    static std::map < std::string, ObsOpFactory * > makers_;
    return makers_;
  }
};
 
// -----------------------------------------------------------------------------
 
template<class T>
class ObsOpMaker : public ObsOpFactory {
  virtual ObsOpBaseQG * make(const ObsSpaceQG & odb, const eckit::Configuration & conf)
    { return new T(odb, conf); }
 public:
  explicit ObsOpMaker(const std::string & name) : ObsOpFactory(name) {}
};
 
// -----------------------------------------------------------------------------
 
}  // namespace qg
 
#endif  // QG_MODEL_OBSOPBASEQG_H_