EpetraExt_View_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_View_MultiVector.h>
00030 
00031 #include <Epetra_MultiVector.h>
00032 #include <Epetra_BlockMap.h>
00033 
00034 namespace EpetraExt {
00035 
00036 MultiVector_View::
00037 ~MultiVector_View()
00038 {
00039   if( newObj_ ) delete newObj_;
00040 }
00041 
00042 MultiVector_View::NewTypeRef
00043 MultiVector_View::
00044 operator()( OriginalTypeRef orig )
00045 {
00046   origObj_ = &orig;
00047 
00048   int numVec = NumVec_;
00049   if( numVec == -1 ) numVec = orig.NumVectors();
00050 
00051   double ** ptrArray;
00052   orig.ExtractView( &ptrArray );
00053 
00054   Epetra_MultiVector * newMV = new Epetra_MultiVector( View, NewMap_, ptrArray, numVec );
00055 
00056   newObj_ = newMV;
00057 
00058   return *newMV;
00059 }
00060 
00061 } // namespace EpetraExt
00062 
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