ReparametrizationFunctionWrapper.h

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//
// File: ReparametrizationFunctionWrapper.h
// Created by: Julien Dutheil
// Created on: Fri Jan  30 09:30 2009
//

/*
Copyright or © or Copr. Bio++ Development Team, (November 17, 2004)

This software is a computer program whose purpose is to provide classes
for numerical calculus.

This software is governed by the CeCILL  license under French law and
abiding by the rules of distribution of free software.  You can  use, 
modify and/ or redistribute the software under the terms of the CeCILL
license as circulated by CEA, CNRS and INRIA at the following URL
"http://www.cecill.info". 

As a counterpart to the access to the source code and  rights to copy,
modify and redistribute granted by the license, users are provided only
with a limited warranty  and the software's author,  the holder of the
economic rights,  and the successive licensors  have only  limited
liability. 

In this respect, the user's attention is drawn to the risks associated
with loading,  using,  modifying and/or developing or reproducing the
software by the user in light of its specific status of free software,
that may mean  that it is complicated to manipulate,  and  that  also
therefore means  that it is reserved for developers  and  experienced
professionals having in-depth computer knowledge. Users are therefore
encouraged to load and test the software's suitability as regards their
requirements in conditions enabling the security of their systems and/or 
data to be ensured and,  more generally, to use and operate it in the 
same conditions as regards security. 

The fact that you are presently reading this means that you have had
knowledge of the CeCILL license and that you accept its terms.
*/

#ifndef _REPARAMETRIZATIONFUNCTIONWRAPPER_H_
#define _REPARAMETRIZATIONFUNCTIONWRAPPER_H_

#include "Functions.h"
#include "../AbstractParametrizable.h"
#include "../TransformedParameter.h"

namespace bpp {

class ReparametrizationFunctionWrapper:
  public virtual Function,
  public AbstractParametrizable
{
   private:
    Function* function_;
    ParameterList functionParameters_;
    
  public:
    ReparametrizationFunctionWrapper(Function* function, bool verbose=true) :
      AbstractParametrizable(function->getNamespace()),
      function_(function),
      functionParameters_(function->getParameters())
    {
      init_(verbose);
    }

    ReparametrizationFunctionWrapper(Function* function, const ParameterList& parameters, bool verbose=true) :
      AbstractParametrizable(function->getNamespace()),
      function_(function),
      functionParameters_(function->getParameters().getCommonParametersWith(parameters))
    {
      init_(verbose);
    }
    
    ReparametrizationFunctionWrapper(const ReparametrizationFunctionWrapper& rfw) :
      AbstractParametrizable(rfw),
      function_(rfw.function_),
      functionParameters_(rfw.functionParameters_) {}
    
    ReparametrizationFunctionWrapper& operator=(const ReparametrizationFunctionWrapper& rfw)
    {
      AbstractParametrizable::operator=(rfw),
      function_ = rfw.function_;
      functionParameters_ = rfw.functionParameters_;
      return *this;
    }

    virtual ~ReparametrizationFunctionWrapper() {}

#if defined(NO_VIRTUAL_COV)
    Clonable* clone() const { return new ReparametrizationFunctionWrapper(*this); }
#else
    ReparametrizationFunctionWrapper* clone() const { return new ReparametrizationFunctionWrapper(*this); }
#endif

  private:
    void init_(bool verbose);

  public:
    virtual const Function& getFunction() const { return *function_; } 
    
    virtual Function& getFunction() { return *function_; } 

    void setParameters(const ParameterList& parameters)
      throw (ParameterNotFoundException, ConstraintException)
    {
//      parameters.printParameters(std::cout);
      matchParametersValues(parameters);
      //We only set parameters that have been changed:
//      functionParameters_.printParameters(std::cout);
      function_->setParameters(functionParameters_.subList(parameters.getParameterNames()));
    }

    double getValue() const throw (Exception)
    {
      return function_->getValue();
    }

    void fireParameterChanged (const ParameterList &parameters);

};

class ReparametrizationDerivableFirstOrderWrapper:
  public virtual DerivableFirstOrder,
  public ReparametrizationFunctionWrapper
{
    
  public:
    ReparametrizationDerivableFirstOrderWrapper(DerivableFirstOrder* function, bool verbose=true) :
      ReparametrizationFunctionWrapper(function, verbose)
    {}

    ReparametrizationDerivableFirstOrderWrapper(DerivableFirstOrder* function, const ParameterList& parameters, bool verbose=true) :
      ReparametrizationFunctionWrapper(function, parameters, verbose)
    {}
    
    virtual ~ReparametrizationDerivableFirstOrderWrapper() {}

#if defined(NO_VIRTUAL_COV)
    Clonable* clone() const { return new ReparametrizationDerivableFirstOrderWrapper(*this); }
#else
    ReparametrizationDerivableFirstOrderWrapper* clone() const { return new ReparametrizationDerivableFirstOrderWrapper(*this); }
#endif

  private:
    void init_(bool verbose);

  public:
    void enableFirstOrderDerivatives(bool yn) { dynamic_cast<DerivableFirstOrder&>(getFunction()).enableFirstOrderDerivatives(yn); }
    
    bool enableFirstOrderDerivatives() const { return dynamic_cast<const DerivableFirstOrder&>(getFunction()).enableFirstOrderDerivatives(); }

    double getFirstOrderDerivative(const std::string& variable) const throw (Exception)
    {
      return dynamic_cast<const DerivableFirstOrder&>(getFunction()).getFirstOrderDerivative(variable)
           * dynamic_cast<const TransformedParameter&>(getParameter(variable)).getFirstOrderDerivative();
    }

};


class ReparametrizationDerivableSecondOrderWrapper:
  public virtual DerivableSecondOrder,
  public ReparametrizationDerivableFirstOrderWrapper
{
    
  public:
    ReparametrizationDerivableSecondOrderWrapper(DerivableSecondOrder* function, bool verbose=true) :
      ReparametrizationDerivableFirstOrderWrapper(function, verbose)
    {}

    ReparametrizationDerivableSecondOrderWrapper(DerivableSecondOrder* function, const ParameterList& parameters, bool verbose=true) :
      ReparametrizationDerivableFirstOrderWrapper(function, parameters, verbose)
    {}
    
    virtual ~ReparametrizationDerivableSecondOrderWrapper() {}

#if defined(NO_VIRTUAL_COV)
    Clonable* clone() const { return new ReparametrizationDerivableSecondOrderWrapper(*this); }
#else
    ReparametrizationDerivableSecondOrderWrapper* clone() const { return new ReparametrizationDerivableSecondOrderWrapper(*this); }
#endif

  private:
    void init_(bool verbose);

  public:
    void enableSecondOrderDerivatives(bool yn) { dynamic_cast<DerivableSecondOrder&>(getFunction()).enableSecondOrderDerivatives(yn); }
    
    bool enableSecondOrderDerivatives() const { return dynamic_cast<const DerivableSecondOrder&>(getFunction()).enableSecondOrderDerivatives(); }

    double getSecondOrderDerivative(const std::string& variable) const throw (Exception)
    {
      return dynamic_cast<const DerivableSecondOrder&>(getFunction()).getSecondOrderDerivative(variable)
           * pow(dynamic_cast<const TransformedParameter&>(getParameter(variable)).getFirstOrderDerivative(), 2)
           + dynamic_cast<const DerivableSecondOrder&>(getFunction()).getFirstOrderDerivative(variable)
           * dynamic_cast<const TransformedParameter&>(getParameter(variable)).getSecondOrderDerivative();
    }

    double getSecondOrderDerivative(const std::string& variable1, const std::string& variable2) const throw (Exception)
    {
      return dynamic_cast<const DerivableSecondOrder&>(getFunction()).getSecondOrderDerivative(variable1, variable2)
           * dynamic_cast<const TransformedParameter&>(getParameter(variable1)).getFirstOrderDerivative()
           * dynamic_cast<const TransformedParameter&>(getParameter(variable2)).getFirstOrderDerivative();
    }
 
};

} //end of namespace bpp.

#endif //_REPARAMETRIZATIONFUNCTIONWRAPPER_H_