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- #ifndef K3DSDK_IPERSISTENT_LOOKUP_H
- #define K3DSDK_IPERSISTENT_LOOKUP_H
-
- // K-3D
- // Copyright (c) 1995-2004, Timothy M. Shead
- //
- // Contact: tshead@k-3d.com
- //
- // This program is free software; you can redistribute it and/or
- // modify it under the terms of the GNU General Public
- // License as published by the Free Software Foundation; either
- // version 2 of the License, or (at your option) any later version.
- //
- // This program 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
- // General Public License for more details.
- //
- // You should have received a copy of the GNU General Public
- // License along with this program; if not, write to the Free Software
- // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
- /** \file
- \brief Declares ipersistent_lookup lookup, an abstract interface to assign/lookup unique identifiers for object serialization
- \author Tim Shead (tshead@k-3d.com)
- */
-
- #include "iunknown.h"
-
- namespace k3d
- {
-
- /// Abstract interface to assign / lookup unique identifiers for object serialization
- class ipersistent_lookup :
- public virtual iunknown
- {
- public:
- /// Defines a unique identifier that can be serialized
- typedef unsigned long id_type;
- /// Returns a unique identifier for the given object that can be used in serialization
- virtual const id_type lookup_id(iunknown* Object) = 0;
- /// Given a unique identifier, returns the corresponding object (could return NULL)
- virtual iunknown* lookup_object(const id_type ID) = 0;
-
-
- protected:
- ipersistent_lookup() {}
- ipersistent_lookup(const ipersistent_lookup&) {}
- ipersistent_lookup& operator=(const ipersistent_lookup&) { return *this; }
- virtual ~ipersistent_lookup() {}
- };
-
- } // namespace k3d
-
- #endif // !K3DSDK_IPERSISTENT_LOOKUP_H
-
-