IdentityOperator.h

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#ifndef included_AMP_IdentityOperator
#define included_AMP_IdentityOperator
 
#include "AMP/operators/LinearOperator.h"
#include "AMP/operators/OperatorParameters.h"
#include "AMP/vectors/Vector.h"
 
namespace AMP::Operator {
 
 
class IdentityOperator : public LinearOperator
{
public:
    IdentityOperator();
 
    explicit IdentityOperator( std::shared_ptr<const OperatorParameters> params );
 
    virtual ~IdentityOperator() {}
 
    std::string type() const override { return "IdentityOperator"; }
 
    void apply( AMP::LinearAlgebra::Vector::const_shared_ptr u,
                AMP::LinearAlgebra::Vector::shared_ptr f ) override;
 
    void reset( std::shared_ptr<const OperatorParameters> params ) override;
 
    std::shared_ptr<OperatorParameters>
    getParameters( const std::string &type,
                   std::shared_ptr<const AMP::LinearAlgebra::Vector> u,
                   std::shared_ptr<OperatorParameters> params = nullptr ) override;
    void setMatrix( std::shared_ptr<AMP::LinearAlgebra::Matrix> in_mat ) override;
 
    virtual void setInputVariable( std::shared_ptr<AMP::LinearAlgebra::Variable> var )
    {
        d_inputVariable = var;
    }
 
    virtual void setOutputVariable( std::shared_ptr<AMP::LinearAlgebra::Variable> var )
    {
        d_outputVariable = var;
    }
 
    std::shared_ptr<AMP::LinearAlgebra::Vector> createInputVector() const override;
 
    std::shared_ptr<AMP::LinearAlgebra::Vector> createOutputVector() const override;
 
private:
    size_t d_localSize = 0;
};
} // namespace AMP::Operator
 
#endif