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EpetraExt_Reindex_LinearProblem.cpp
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00001 // @HEADER
00002 // ***********************************************************************
00003 // 
00004 //     EpetraExt: Epetra Extended - Linear Algebra Services Package
00005 //                 Copyright (2001) Sandia Corporation
00006 // 
00007 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
00008 // license for use of this work by or on behalf of the U.S. Government.
00009 // 
00010 // This library is free software; you can redistribute it and/or modify
00011 // it under the terms of the GNU Lesser General Public License as
00012 // published by the Free Software Foundation; either version 2.1 of the
00013 // License, or (at your option) any later version.
00014 //  
00015 // This library is distributed in the hope that it will be useful, but
00016 // WITHOUT ANY WARRANTY; without even the implied warranty of
00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018 // Lesser General Public License for more details.
00019 //  
00020 // You should have received a copy of the GNU Lesser General Public
00021 // License along with this library; if not, write to the Free Software
00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00023 // USA
00024 // Questions? Contact Michael A. Heroux (maherou@sandia.gov) 
00025 // 
00026 // ***********************************************************************
00027 // @HEADER
00028 
00029 #include <EpetraExt_Reindex_LinearProblem.h>
00030 
00031 #include <EpetraExt_Reindex_CrsMatrix.h>
00032 #include <EpetraExt_Reindex_MultiVector.h>
00033 
00034 #include <Epetra_LinearProblem.h>
00035 #include <Epetra_CrsMatrix.h>
00036 #include <Epetra_MultiVector.h>
00037 #include <Epetra_Map.h>
00038 
00039 namespace EpetraExt {
00040 
00041 LinearProblem_Reindex::
00042 ~LinearProblem_Reindex()
00043 {
00044   if( newObj_ ) delete newObj_;
00045 
00046   if( MatTrans_ ) delete MatTrans_;
00047   if( LHSTrans_ ) delete LHSTrans_;
00048   if( RHSTrans_ ) delete RHSTrans_;
00049 
00050   if( NewRowMapOwned_ ) delete NewRowMap_;
00051 }
00052 
00053 LinearProblem_Reindex::NewTypeRef
00054 LinearProblem_Reindex::
00055 operator()( OriginalTypeRef orig )
00056 {
00057   Epetra_CrsMatrix * OldMatrix = dynamic_cast<Epetra_CrsMatrix*>( orig.GetMatrix() );
00058   Epetra_MultiVector * OldRHS = orig.GetRHS();
00059   Epetra_MultiVector * OldLHS = orig.GetLHS();
00060   const Epetra_BlockMap & OldRowMap = OldMatrix->Map();
00061 
00062   //If new map not passed in create one with lex ordering
00063   if( !NewRowMap_ )
00064   {
00065     int NumMyElements = OldRowMap.NumMyElements();
00066     int NumGlobalElements = OldRowMap.NumGlobalElements();
00067 
00068     NewRowMap_ = new Epetra_Map( NumGlobalElements, NumMyElements, 0, OldRowMap.Comm() );
00069     NewRowMapOwned_ = true;
00070   }
00071 
00072   MatTrans_ = new CrsMatrix_Reindex( *NewRowMap_ );
00073   LHSTrans_ = new MultiVector_Reindex( *NewRowMap_ );
00074   RHSTrans_ = new MultiVector_Reindex( *NewRowMap_ );
00075 
00076   Epetra_CrsMatrix * NewMatrix = &((*MatTrans_)( *OldMatrix ));
00077   Epetra_MultiVector * NewLHS = &((*LHSTrans_)( *OldLHS ));
00078   Epetra_MultiVector * NewRHS = &((*RHSTrans_)( *OldRHS ));
00079 
00080   newObj_ = new Epetra_LinearProblem( NewMatrix, NewLHS, NewRHS );
00081 
00082   return *newObj_;
00083 }
00084 
00085 } //namespace EpetraExt
00086 
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