EpetraExt_Reindex_MultiVector.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_MultiVector.h>
00030 
00031 #include <vector>
00032 
00033 #include <Epetra_Map.h>
00034 #include <Epetra_MultiVector.h>
00035 
00036 namespace EpetraExt {
00037 
00038 MultiVector_Reindex::
00039 ~MultiVector_Reindex()
00040 {
00041   if( newObj_ ) delete newObj_;
00042 }
00043 
00044 MultiVector_Reindex::NewTypeRef
00045 MultiVector_Reindex::
00046 operator()( OriginalTypeRef orig )
00047 {
00048   origObj_ = &orig;
00049 
00050   //test std::map, must have same number of local and global elements as original row std::map
00051   assert( orig.Map().NumMyElements() == NewRowMap_.NumMyElements() );
00052 
00053   std::vector<double*> MyValues(1);
00054   int MyLDA;
00055   int NumVectors = orig.NumVectors();
00056   orig.ExtractView( &MyValues[0], &MyLDA );
00057 
00058   Epetra_MultiVector * NewMV = new Epetra_MultiVector( View, NewRowMap_, MyValues[0], MyLDA, NumVectors );
00059 
00060   newObj_ = NewMV;
00061 
00062   return *NewMV;
00063 }
00064 
00065 } // namespace EpetraExt
00066 

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