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// Thyra: Interfaces and Support for Abstract Numerical Algorithms
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#ifndef THYRA_MULTI_VECTOR_RANDOMIZER_BASE_HPP
#define THYRA_MULTI_VECTOR_RANDOMIZER_BASE_HPP
#include "Thyra_OperatorVectorTypes.hpp"
namespace Thyra {
/** \brief Base interface for a strategy object for randomizing a
* multi-vector.
*
* This object is *not* stateless in its use! Every time it generates a new
* random multi-vector its behavior changes.
*
* A single <tt>MultiVectorRandomizerBase</tt> object may be compatible with
* many different types of concrete vector space implementations or may
* compatible with only a specific instantiation of a concrete vector space
* subclass.
*
* \ingroup Thyra_Op_Vec_extended_interfaces_code_grp
*/
template<class Scalar>
class MultiVectorRandomizerBase {
public:
/** \brief . */
virtual ~MultiVectorRandomizerBase() {}
/** \brief Determines if <tt>*this</tt> is compatible with multi-vectors
* from the <tt>VectorSpace</tt> <tt>space</tt>.
*/
virtual bool isCompatible( const VectorSpaceBase<Scalar> &space ) const = 0;
/** \brief Randomize a "compatible" multi-vector.
*
* <b>Preconditions:</b><ul>
* <li><tt>mv!=NULL</tt>
* <li><tt>this->isCompatible(*mv->range()) == true</tt>
* </ul>
*/
void randomize(const Ptr<MultiVectorBase<Scalar> > &mv)
{ randomizeImpl(mv); }
private:
/** \brief . */
virtual void randomizeImpl(const Ptr<MultiVectorBase<Scalar> > &mv) = 0;
};
} // namespace Thyra
#endif // THYRA_MULTI_VECTOR_RANDOMIZER_BASE_HPP
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