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// ***********************************************************************
//
// Teuchos: Common Tools Package
// Copyright (2004) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA
// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
//
// ***********************************************************************
// @HEADER
#ifndef TEUCHOS_ABSTRACT_FACTORY_HPP
#define TEUCHOS_ABSTRACT_FACTORY_HPP
#include "Teuchos_RCP.hpp"
namespace Teuchos {
/** \brief Simple, universal "Abstract Factory" interface for the
* dynamic creation of objects.
*
* While <tt>RCP</tt> provides for specialized deallocation
* policies it does not abstract, in any way, how an object is first
* allocated. The most general way to abstract how an object is
* allocated is to use an "Abstract Factory". This base class defines
* the most basic "Abstract Factory" interface and defines only one
* virtual function, <tt>create()</tt> that returns a
* <tt>RCP</tt>-wrapped object.
*/
template<class T>
class AbstractFactory {
public:
#ifndef DOXYGEN_COMPILE
/** \brief . */
typedef Teuchos::RCP<T> obj_ptr_t;
#endif
/** \brief . */
virtual ~AbstractFactory() {}
/** \brief Create an object of type T returned as a smart reference
* counting pointer object.
*/
virtual obj_ptr_t create() const = 0;
}; // class AbstractFactory
} // end Teuchos
#endif // TEUCHOS_ABSTRACT_FACTORY_HPP
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