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// Thyra: Interfaces and Support for Abstract Numerical Algorithms
// Copyright (2004) Sandia Corporation
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#ifndef THYRA_VECTOR_SPACE_FACTORY_DECL_HPP
#define THYRA_VECTOR_SPACE_FACTORY_DECL_HPP
#include "Thyra_OperatorVectorTypes.hpp"
#include "Teuchos_Describable.hpp"
namespace Thyra {
/** \brief Abstract interface for objects that can create vector spaces of a
* specified dimension.
*
* The primary role that a <tt>%VectorSpaceFactoryBase</tt> object takes is
* defined in the documentation for the class <tt>VectorSpaceBase</tt> and is
* related to the domain space of <tt>MultiVectorBase</tt> objects. However,
* this is a general factory interface class that can be used to create almost
* any <tt>VectorSpaceBase</tt> object just given a dimension.
*
* \ingroup Thyra_Op_Vec_fundamental_interfaces_code_grp
*/
template<class Scalar>
class VectorSpaceFactoryBase : virtual public Teuchos::Describable {
public:
/** \brief . */
virtual ~VectorSpaceFactoryBase() {}
/** @name Public pure virtual functions that must be overridden */
//@{
/** \brief Create a vector space of the given dimension.
*
* @param dim [in] The dimension of the vector space to create.
*
* <b>Preconditions:</b><ul>
* <li> <tt>dim > 0</tt> (throw <tt>std::invalid_argument</tt>).
* </ul>
*
* <b>Postconditions:</b><ul>
* <li> <tt>return.get() != NULL</tt>
* <li> <tt>return->dim() == dim</tt>
* </ul>
*
* @return Returns a smart reference-counted pointer to a dynamically
* allocated vector space object that can be used to create vectors and
* multi-vectors.
*/
virtual RCP< const VectorSpaceBase<Scalar> > createVecSpc(int dim) const = 0;
//@}
private:
// Not defined and not to be called
VectorSpaceFactoryBase<Scalar>&
operator=(const VectorSpaceFactoryBase<Scalar>&);
};
} // end namespace Thyra
#endif // THYRA_VECTOR_SPACE_FACTORY_DECL_HPP
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