// @HEADER
// ***********************************************************************
// 
//                           Stokhos Package
//                 Copyright (2009) Sandia Corporation
// 
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact Eric T. Phipps (etphipp@sandia.gov).
// 
// ***********************************************************************
// @HEADER

#ifndef STOKHOS_REDUCED_BASIS_FACTORY_HPP
#define STOKHOS_REDUCED_BASIS_FACTORY_HPP

#include "Teuchos_RCP.hpp"
#include "Teuchos_Array.hpp"
#include "Teuchos_ParameterList.hpp"
#include "Stokhos_ReducedPCEBasis.hpp"
#include "Stokhos_OrthogPolyApprox.hpp"
#include "Stokhos_Quadrature.hpp"
#include "Stokhos_Sparse3Tensor.hpp"

namespace Stokhos {

  /*! 
   * \brief Generate a basis from a given set of PCE expansions that is 
   * orthogonal with respect to the product measure induced by these expansions.
   */
  template <typename ordinal_type, typename value_type>
  class ReducedBasisFactory {
  public:

    //! Constructor
    /*!
     * \param params Parameter dictating choice of reduction method
     */
    ReducedBasisFactory(const Teuchos::ParameterList& params);

    //! Destructor
    virtual ~ReducedBasisFactory() {}

    //! Get reduced quadrature object
    virtual Teuchos::RCP<Stokhos::ReducedPCEBasis<ordinal_type, value_type> >
    createReducedBasis(
      ordinal_type p,
      const Teuchos::Array< Stokhos::OrthogPolyApprox<ordinal_type, value_type> >& pce,
      const Teuchos::RCP<const Stokhos::Quadrature<ordinal_type, value_type> >& quad,
      const Teuchos::RCP< const Stokhos::Sparse3Tensor<ordinal_type, value_type> >& Cijk) const;

  private:

    // Prohibit copying
    ReducedBasisFactory(const ReducedBasisFactory&);

    // Prohibit Assignment
    ReducedBasisFactory& operator=(const ReducedBasisFactory&);
    
  protected:

    //! Algorithm parameters
    Teuchos::ParameterList params;

    //! Reduction method
    std::string reduction_method;

  }; // class ReducedBasisFactory

} // Namespace Stokhos

// Include template definitions
#include "Stokhos_ReducedBasisFactoryImp.hpp"

#endif
