Step.hpp

#ifndef DEF_VARIATIONAL_STEP
#define DEF_VARIATIONAL_STEP

#include <NOX.H>
#include <NOX_Common.H>
#include <NOX_Utils.H>
#include <Teuchos_StandardCatchMacros.hpp>

namespace Variational {

template <typename T_M,
          typename T_Q,
          typename T_TQ>
class Step : public Abstract::Step<T_M,T_Q,T_TQ>
{
private:
    Teuchos::RCP<Teuchos::ParameterList>            m_solverParametersPtr;
    Teuchos::RCP<NOX::StatusTest::Combo>            m_statusTests;
    Teuchos::RCP<NOXGroup<T_Q,1>>                   m_grp;
    Teuchos::RCP<NOX::Solver::Generic>              m_solver;

public:
    Step<T_M,T_Q,T_TQ> (Abstract::Problem<T_M,T_Q>& problem)
    :   Abstract::Step<T_M,T_Q,T_TQ>(problem)
    {
        // m_internals is already initalized by base constructor, overriding
        Abstract::StepInternals<T_M,T_Q,T_TQ>* internals
            = new Abstract::StepInternals<T_M,T_Q,T_TQ>(problem);
        this->m_internals = internals;

        // NOX
        this->m_solverParametersPtr = Teuchos::rcp(new Teuchos::ParameterList);
        Teuchos::ParameterList& solverParameters = *m_solverParametersPtr;
        solverParameters.set("Nonlinear Solver","Tensor Based");

        Teuchos::ParameterList& directionParameters
            = solverParameters.sublist("Direction");
        directionParameters.set("Method","Tensor");

        Teuchos::ParameterList& globalStrategyParameters
            = solverParameters.sublist("Line Search");
        globalStrategyParameters.set("Method","Curvilinear");

        Teuchos::ParameterList& lineSearchParameters
            = globalStrategyParameters.sublist(globalStrategyParameters.get("Method","Curvilinear"));
        lineSearchParameters.set("Lambda Selection","Halving");
        lineSearchParameters.set("Max Iters",20);

        Teuchos::RCP<NOX::StatusTest::NormF> statusTestA
            = Teuchos::rcp(new NOX::StatusTest::NormF(1.0e-8,NOX::StatusTest::NormF::Unscaled));
        Teuchos::RCP<NOX::StatusTest::MaxIters> statusTestB
            = Teuchos::rcp(new NOX::StatusTest::MaxIters(50));
        this->m_statusTests = Teuchos::rcp(new NOX::StatusTest::Combo(NOX::StatusTest::Combo::OR,statusTestA,statusTestB));


        Abstract::StepInternals<T_M,T_Q,T_TQ>* tmp
            = static_cast<Abstract::StepInternals<T_M,T_Q,T_TQ>*>(this->m_internals);
        this->m_grp = Teuchos::rcp(new NOXGroup<T_Q,1>(*tmp));
        this->m_solver = NOX::Solver::buildSolver(this->m_grp,this->m_statusTests,this->m_solverParametersPtr);
    }

    ~Step<T_M,T_Q,T_TQ> ()
    { }

    const bool
    makeStep (void)
    {
        // TODO: a travailler !!
        T_Q* q1 = new T_Q();
        bool success = true;
        bool verbose = false;

        try {
            NOX::StatusTest::StatusType status = m_solver->solve();
            const NOXGroup<T_Q,1>& solnGrp = dynamic_cast<const NOXGroup<T_Q,1>&>(m_solver->getSolutionGroup());
            const NOXVector<T_Q::DOF>& solnVec = dynamic_cast<const NOXVector<T_Q::DOF>&>(solnGrp.getX());

            if (status != NOX::StatusTest::Converged)
                success = false;
        } TEUCHOS_STANDARD_CATCH_STATEMENTS(verbose, std::cerr, success);

        success &= this->m_internals->computeSolution();

        return success;
    }
};
} // namespace Variational

#endif