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+// Copyright (C) 2007, International Business Machines Corporation and others.
+// All Rights Reserved.
+// This code is published under the Eclipse Public License.
+//
+// Authors :
+// Joao P. Goncalves, International Business Machines Corporation
+//
+// Date : November 12, 2007
+
+#ifndef BonHeuristicDiveMIPVectorLength_H
+#define BonHeuristicDiveMIPVectorLength_H
+
+#include "BonBonminSetup.hpp"
+#include "BonHeuristicDiveMIP.hpp"
+
+/** DiveMIPVectorLength class
+ */
+
+namespace Bonmin
+{
+ class HeuristicDiveMIPVectorLength : public HeuristicDiveMIP {
+ public:
+ /// Default Constructor
+ HeuristicDiveMIPVectorLength ();
+
+ /// Constructor with setup
+ HeuristicDiveMIPVectorLength(BonminSetup * setup);
+
+ /// Copy constructor
+ HeuristicDiveMIPVectorLength(const HeuristicDiveMIPVectorLength &copy);
+
+ /// Destructor
+ ~HeuristicDiveMIPVectorLength()
+ {
+ delete [] columnLength_;
+ }
+
+ /// Assignment operator
+ HeuristicDiveMIPVectorLength & operator=(const HeuristicDiveMIPVectorLength & rhs);
+
+ /// Clone
+ virtual CbcHeuristic * clone() const;
+
+ /** Change setup used for heuristic.*/
+ virtual void setSetup(BonminSetup * setup){
+ HeuristicDiveMIP::setSetup(setup);
+ Initialize(setup->options());
+ }
+
+ /// sets internal variables
+ virtual void setInternalVariables(TMINLP2TNLP* minlp);
+
+ /// Selects the next variable to branch on
+ /** If bestColumn = -1, it means that no variable was found
+ */
+ virtual void selectVariableToBranch(TMINLP2TNLP* minlp,
+ const vector<int> & integerColumns,
+ const double* newSolution,
+ int& bestColumn,
+ int& bestRound);
+
+ /** Register the options common to all local search based heuristics.*/
+ static void registerOptions(Ipopt::SmartPtr<Bonmin::RegisteredOptions> roptions);
+
+ /** Initiaize using passed options.*/
+ void Initialize(Ipopt::SmartPtr<Ipopt::OptionsList> options);
+
+ private:
+ /// the number of nonzero elements in each column
+ int* columnLength_;
+
+ };
+}
+#endif