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+// $Id: CbcPartialNodeInfo.hpp 1899 2013-04-09 18:12:08Z stefan $
+// Copyright (C) 2002, International Business Machines
+// Corporation and others. All Rights Reserved.
+// This code is licensed under the terms of the Eclipse Public License (EPL).
+
+// Edwin 11/24/09 carved from CbcNode
+
+#ifndef CbcPartialNodeInfo_H
+#define CbcPartialNodeInfo_H
+
+#include <string>
+#include <vector>
+
+#include "CoinWarmStartBasis.hpp"
+#include "CoinSearchTree.hpp"
+#include "CbcBranchBase.hpp"
+#include "CbcNodeInfo.hpp"
+
+class OsiSolverInterface;
+class OsiSolverBranch;
+
+class OsiCuts;
+class OsiRowCut;
+class OsiRowCutDebugger;
+class CoinWarmStartBasis;
+class CbcCountRowCut;
+class CbcModel;
+class CbcNode;
+class CbcSubProblem;
+class CbcGeneralBranchingObject;
+/** \brief Holds information for recreating a subproblem by incremental change
+ from the parent.
+
+ A CbcPartialNodeInfo object contains changes to the bounds and basis, and
+ additional cuts, required to recreate a subproblem by modifying and
+ augmenting the parent subproblem.
+*/
+
+class CbcPartialNodeInfo : public CbcNodeInfo {
+
+public:
+
+ /** \brief Modify model according to information at node
+
+ The routine modifies the model according to bound and basis change
+ information at node and adds any cuts to the addCuts array.
+ */
+ virtual void applyToModel (CbcModel *model, CoinWarmStartBasis *&basis,
+ CbcCountRowCut **addCuts,
+ int &currentNumberCuts) const ;
+
+ /// Just apply bounds to one variable - force means overwrite by lower,upper (1=>infeasible)
+ virtual int applyBounds(int iColumn, double & lower, double & upper, int force) ;
+ /** Builds up row basis backwards (until original model).
+ Returns NULL or previous one to apply .
+ Depends on Free being 0 and impossible for cuts
+ */
+ virtual CbcNodeInfo * buildRowBasis(CoinWarmStartBasis & basis ) const ;
+ // Default Constructor
+ CbcPartialNodeInfo ();
+
+ // Constructor from current state
+ CbcPartialNodeInfo (CbcNodeInfo * parent, CbcNode * owner,
+ int numberChangedBounds, const int * variables,
+ const double * boundChanges,
+ const CoinWarmStartDiff *basisDiff) ;
+
+ // Copy constructor
+ CbcPartialNodeInfo ( const CbcPartialNodeInfo &);
+
+ // Destructor
+ ~CbcPartialNodeInfo ();
+
+ /// Clone
+ virtual CbcNodeInfo * clone() const;
+ /// Basis diff information
+ inline const CoinWarmStartDiff *basisDiff() const {
+ return basisDiff_ ;
+ }
+ /// Which variable (top bit if upper bound changing)
+ inline const int * variables() const {
+ return variables_;
+ }
+ // New bound
+ inline const double * newBounds() const {
+ return newBounds_;
+ }
+ /// Number of bound changes
+ inline int numberChangedBounds() const {
+ return numberChangedBounds_;
+ }
+protected:
+ /* Data values */
+
+ /// Basis diff information
+ CoinWarmStartDiff *basisDiff_ ;
+ /// Which variable (top bit if upper bound changing)
+ int * variables_;
+ // New bound
+ double * newBounds_;
+ /// Number of bound changes
+ int numberChangedBounds_;
+private:
+
+ /// Illegal Assignment operator
+ CbcPartialNodeInfo & operator=(const CbcPartialNodeInfo& rhs);
+};
+
+#endif //CbcPartialNodeInfo_H
+