Advanced Multi-Physics (AMP)
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AMP::LinearAlgebra::VS_ByVariableName Class Reference

Select a subvector based on the name of the variable. More...

#include <VectorSelector.h>

Inheritance diagram for AMP::LinearAlgebra::VS_ByVariableName:
Inheritance graph
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Public Member Functions

virtual AMP_MPI communicator (const Vector &vec) const
 Returns the communicator for the subset.
 
const std::string & getName () const
 
virtual bool isSelected (const Vector &v) const override
 Returns true if Vector grossly matches a selection condition.
 
std::shared_ptr< const Vectorsubset (std::shared_ptr< const Vector > vec) const
 Subset the given vector.
 
virtual std::shared_ptr< Vectorsubset (std::shared_ptr< Vector > vec) const override
 Subset the given vector.
 
virtual std::shared_ptr< Vectorsubset (std::shared_ptr< Vector > vec) const=0
 Subset the given vector.
 
 VS_ByVariableName (std::string name)
 Constructor.
 

Static Public Member Functions

static std::shared_ptr< VectorSelectorcreate (const std::vector< std::shared_ptr< VectorSelector > > &selectors)
 Create a VectorSelector.
 

Protected Attributes

std::string d_VecName
 

Detailed Description

Select a subvector based on the name of the variable.

This can be used in the Vector::select or Vector::selectInto interface:

// Create a vector of all data in the simulation
auto data = meshManager->createVector( complexVariable );
// Extract all data called "Temperature"
auto temperature = data->select ( VS_ByVariableName( "Temperature" ), "Temperature" );
// Add displacement data to a vector results
data->select ( VS_ByBariableName( "Displacement" ), results );
Select a subvector based on the name of the variable.

Definition at line 77 of file VectorSelector.h.

Constructor & Destructor Documentation

◆ VS_ByVariableName()

AMP::LinearAlgebra::VS_ByVariableName::VS_ByVariableName ( std::string  name)

Constructor.

Parameters
[in]nameThe name of the variable to subset on

Member Function Documentation

◆ communicator()

virtual AMP_MPI AMP::LinearAlgebra::VectorSelector::communicator ( const Vector vec) const
virtualinherited

Returns the communicator for the subset.

Parameters
[in]vecThe Vector to match

This function will return the proper communicator given the current vector. For most subsetters, this will be the same communicator as the current vector, however some subsetters (MeshSelector) may opperate on a different (smaller) comm.

Reimplemented in AMP::LinearAlgebra::VS_Comm, and AMP::LinearAlgebra::VS_Mesh.

◆ create()

static std::shared_ptr< VectorSelector > AMP::LinearAlgebra::VectorSelector::create ( const std::vector< std::shared_ptr< VectorSelector > > &  selectors)
staticinherited

Create a VectorSelector.

Create a VectorSelector that applies a set of selectors which all must be met for the subset operation

Parameters
[in]selectorsA list of subsequent selectors to apply

◆ getName()

const std::string & AMP::LinearAlgebra::VS_ByVariableName::getName ( ) const
inline

Definition at line 88 of file VectorSelector.h.

References d_VecName.

◆ isSelected()

virtual bool AMP::LinearAlgebra::VS_ByVariableName::isSelected ( const Vector vec) const
overridevirtual

Returns true if Vector grossly matches a selection condition.

Parameters
[in]vecThe Vector to match

Base class defaults to accepting all vectors.

Implements AMP::LinearAlgebra::VectorSelector.

◆ subset() [1/3]

std::shared_ptr< const Vector > AMP::LinearAlgebra::VectorSelector::subset ( std::shared_ptr< const Vector vec) const
virtual

Subset the given vector.

Parameters
[in]vecThe Vector to subset

Base class defaults to returning all data in the vector

Implements AMP::LinearAlgebra::VectorSelector.

◆ subset() [2/3]

virtual std::shared_ptr< Vector > AMP::LinearAlgebra::VS_ByVariableName::subset ( std::shared_ptr< Vector vec) const
overridevirtual

Subset the given vector.

Parameters
[in]vecThe Vector to subset

Base class defaults to returning all data in the vector

Implements AMP::LinearAlgebra::VectorSelector.

◆ subset() [3/3]

virtual std::shared_ptr< Vector > AMP::LinearAlgebra::VectorSelector::subset ( std::shared_ptr< Vector vec) const
virtual

Subset the given vector.

Parameters
[in]vecThe Vector to subset

Base class defaults to returning all data in the vector

Implements AMP::LinearAlgebra::VectorSelector.

Member Data Documentation

◆ d_VecName

std::string AMP::LinearAlgebra::VS_ByVariableName::d_VecName
protected

Definition at line 80 of file VectorSelector.h.

Referenced by getName().


The documentation for this class was generated from the following file:



Advanced Multi-Physics (AMP)
Oak Ridge National Laboratory
Idaho National Laboratory
Los Alamos National Laboratory
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Last updated: Tue Mar 10 2026 13:06:43.
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