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65 lines
1.8 KiB
65 lines
1.8 KiB
// Copyright (C) 2005, 2006 International Business Machines and others.
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// All Rights Reserved.
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// This code is published under the Eclipse Public License.
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//
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// $Id: IpHessianUpdater.hpp 1861 2010-12-21 21:34:47Z andreasw $
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//
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// Authors: Andreas Waechter IBM 2005-12-26
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#ifndef __IPHESSIANUPDATER_HPP__
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#define __IPHESSIANUPDATER_HPP__
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#include "IpAlgStrategy.hpp"
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namespace Ipopt
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{
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/** Abstract base class for objects responsible for updating the
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* Hessian information. This can be done using exact second
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* derivatives from the NLP, or by a quasi-Newton Option. The
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* result is put into the W field in IpData.
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*/
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class HessianUpdater : public AlgorithmStrategyObject
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{
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public:
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/**@name Constructors/Destructors */
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//@{
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/** Default Constructor */
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HessianUpdater()
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{}
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/** Default destructor */
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virtual ~HessianUpdater()
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{}
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//@}
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/** overloaded from AlgorithmStrategyObject */
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virtual bool InitializeImpl(const OptionsList& options,
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const std::string& prefix) = 0;
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/** Update the Hessian based on the current information in IpData,
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* and possibly on information from previous calls.
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*/
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virtual void UpdateHessian() = 0;
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private:
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/**@name Default Compiler Generated Methods
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* (Hidden to avoid implicit creation/calling).
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* These methods are not implemented and
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* we do not want the compiler to implement
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* them for us, so we declare them private
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* and do not define them. This ensures that
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* they will not be implicitly created/called. */
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//@{
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/** Copy Constructor */
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HessianUpdater(const HessianUpdater&);
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/** Overloaded Equals Operator */
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void operator=(const HessianUpdater&);
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//@}
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};
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} // namespace Ipopt
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#endif
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