EpetraExt_SolverMap_LinearProblem.cpp

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// ***********************************************************************
// 
//     EpetraExt: Epetra Extended - Linear Algebra Services Package
//                 Copyright (2001) 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.
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// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
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// This library is distributed in the hope that it will be useful, but
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//  
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
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#include <EpetraExt_SolverMap_LinearProblem.h>

#include <Epetra_LinearProblem.h>
#include <Epetra_CrsMatrix.h>
#include <Epetra_Map.h>

class Epetra_MultiVector;

namespace EpetraExt {

LinearProblem_SolverMap::
~LinearProblem_SolverMap()
{
  if( newObj_ && newObj_ != origObj_ ) delete newObj_;
}

LinearProblem_SolverMap::NewTypeRef
LinearProblem_SolverMap::
operator()( OriginalTypeRef orig )
{
  origObj_ = &orig;

  Epetra_CrsMatrix * OldMatrix = dynamic_cast<Epetra_CrsMatrix*>( orig.GetMatrix() );
  Epetra_MultiVector * OldRHS = orig.GetRHS();
  Epetra_MultiVector * OldLHS = orig.GetLHS();

  Epetra_CrsMatrix & NewMatrix = SolverMapTrans_( *OldMatrix );

  if( &NewMatrix == OldMatrix ) //same matrix so use same problem
    newObj_ = origObj_;
  else
    newObj_ = new Epetra_LinearProblem( &NewMatrix, OldLHS, OldRHS );

  return *newObj_;
}

} //namespace EpetraExt

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