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/* $Id: CoinWarmStart.hpp 1372 2011-01-03 23:31:00Z lou $ */
// Copyright (C) 2000, International Business Machines
// Corporation and others. All Rights Reserved.
// This code is licensed under the terms of the Eclipse Public License (EPL).
#ifndef CoinWarmStart_H
#define CoinWarmStart_H
//#############################################################################
class CoinWarmStartDiff;
/** Abstract base class for warm start information.
Really nothing can be generalized for warm start information --- all we
know is that it exists. Hence the abstract base class contains only a
virtual destructor and a virtual clone function (a virtual constructor),
so that derived classes can provide these functions.
*/
class CoinWarmStart {
public:
/// Abstract destructor
virtual ~CoinWarmStart() {}
/// `Virtual constructor'
virtual CoinWarmStart *clone() const = 0 ;
virtual CoinWarmStartDiff*
generateDiff (const CoinWarmStart *const ) const { return 0; }
virtual void
applyDiff (const CoinWarmStartDiff *const ) {}
};
/*! \class CoinWarmStartDiff
\brief Abstract base class for warm start `diff' objects
For those types of warm start objects where the notion of a `diff' makes
sense, this virtual base class is provided. As with CoinWarmStart, its sole
reason for existence is to make it possible to write solver-independent code.
*/
class CoinWarmStartDiff {
public:
/// Abstract destructor
virtual ~CoinWarmStartDiff() {}
/// `Virtual constructor'
virtual CoinWarmStartDiff *clone() const = 0 ;
};
#endif
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