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EpetraExt_LPTrans_From_GraphTrans.cpp
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00004 //     EpetraExt: Epetra Extended - Linear Algebra Services Package
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00041 
00042 #include <EpetraExt_LPTrans_From_GraphTrans.h>
00043 
00044 #include <Epetra_Export.h>
00045 #include <Epetra_Import.h>
00046 #include <Epetra_LinearProblem.h>
00047 #include <Epetra_CrsGraph.h>
00048 #include <Epetra_CrsMatrix.h>
00049 #include <Epetra_MultiVector.h>
00050 #include <Epetra_Vector.h>
00051 #include <Epetra_IntVector.h>
00052 #include <Epetra_Map.h>
00053 #include <Epetra_Comm.h>
00054 
00055 namespace EpetraExt {
00056 
00057 LinearProblem_GraphTrans::
00058 ~LinearProblem_GraphTrans()
00059 {
00060   if( MatExporter_ ) delete MatExporter_;
00061   if( VecExporter_ ) delete VecExporter_;
00062   if( Importer_ ) delete Importer_;
00063 
00064   if( NewProblem_ ) delete NewProblem_;
00065   if( NewRHS_ ) delete NewRHS_;
00066   if( NewLHS_ ) delete NewLHS_;
00067   if( NewMatrix_ ) delete NewMatrix_;
00068 }
00069 
00070 LinearProblem_GraphTrans::NewTypeRef
00071 LinearProblem_GraphTrans::
00072 operator()( OriginalTypeRef orig )
00073 {
00074   OldProblem_ = &orig;
00075   OldMatrix_ = dynamic_cast<Epetra_CrsMatrix*>( orig.GetMatrix() );
00076   OldGraph_ = const_cast<Epetra_CrsGraph*>(&OldMatrix_->Graph());
00077   OldRHS_ = orig.GetRHS();
00078   OldLHS_ = orig.GetLHS();
00079   OldRowMap_ = const_cast<Epetra_Map*>(&OldMatrix_->RowMap());
00080 
00081   int ierr = 0;
00082 
00083 
00084   if( !OldMatrix_ ) ierr = -2;
00085   if( !OldRHS_ )    ierr = -3;
00086   if( !OldLHS_ )    ierr = -4;
00087 
00088   Epetra_CrsGraph & NewGraph = graphTrans_( *OldGraph_ );
00089   NewMatrix_ = new Epetra_CrsMatrix( Copy, NewGraph );
00090 
00091   Epetra_BlockMap & NewRowMap = const_cast<Epetra_BlockMap&>(NewGraph.RowMap());
00092 
00093   NewRHS_ = new Epetra_MultiVector( NewRowMap, 1 );
00094   NewLHS_ = new Epetra_MultiVector( NewRowMap, 1 );
00095 
00096   MatExporter_ = new Epetra_Export( *OldRowMap_, NewRowMap );
00097   VecExporter_ = new Epetra_Export( *OldRowMap_, NewRowMap );
00098   Importer_ = new Epetra_Import( *OldRowMap_, NewRowMap );
00099 
00100   NewProblem_ = new Epetra_LinearProblem( NewMatrix_, NewLHS_, NewRHS_ );
00101 
00102   return *NewProblem_;
00103 }
00104 
00105 bool
00106 LinearProblem_GraphTrans::
00107 fwd()
00108 {
00109   NewLHS_->Export( *OldLHS_, *VecExporter_, Insert );
00110   NewRHS_->Export( *OldRHS_, *VecExporter_, Insert );
00111   NewMatrix_->Export( *OldMatrix_, *MatExporter_, Insert );
00112 
00113   return true;
00114 }
00115 
00116 bool
00117 LinearProblem_GraphTrans::
00118 rvs()
00119 {
00120   OldLHS_->Import( *NewLHS_, *Importer_, Insert );
00121 //  OldRHS_->Import( *NewRHS_, *Importer_, Insert );
00122 //  OldMatrix_->Import( *NewMatrix_, *Importer_, Insert );
00123 
00124   return true;
00125 }
00126 
00127 } //namespace EpetraExt
00128 
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