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OsiTwoWayBranchingObject Class Referenceabstract

This just adds two-wayness to a branching object. More...

#include <OsiBranchingObject.hpp>

+ Inheritance diagram for OsiTwoWayBranchingObject:
+ Collaboration diagram for OsiTwoWayBranchingObject:

Public Member Functions

 OsiTwoWayBranchingObject ()
 Default constructor. More...
 
 OsiTwoWayBranchingObject (OsiSolverInterface *solver, const OsiObject *originalObject, int way, double value)
 Create a standard tw0-way branch object. More...
 
 OsiTwoWayBranchingObject (const OsiTwoWayBranchingObject &)
 Copy constructor. More...
 
OsiTwoWayBranchingObjectoperator= (const OsiTwoWayBranchingObject &rhs)
 Assignment operator. More...
 
virtual ~OsiTwoWayBranchingObject ()
 Destructor. More...
 
virtual double branch (OsiSolverInterface *solver)=0
 Sets the bounds for the variable according to the current arm of the branch and advances the object state to the next arm. More...
 
int firstBranch () const
 
int way () const
 Way returns -1 on down +1 on up. More...
 
- Public Member Functions inherited from OsiBranchingObject
 OsiBranchingObject ()
 Default Constructor. More...
 
 OsiBranchingObject (OsiSolverInterface *solver, double value)
 Constructor. More...
 
 OsiBranchingObject (const OsiBranchingObject &)
 Copy constructor. More...
 
OsiBranchingObjectoperator= (const OsiBranchingObject &rhs)
 Assignment operator. More...
 
virtual OsiBranchingObjectclone () const =0
 Clone. More...
 
virtual ~OsiBranchingObject ()
 Destructor. More...
 
int numberBranches () const
 The number of branch arms created for this branching object. More...
 
int numberBranchesLeft () const
 The number of branch arms left for this branching object. More...
 
void incrementNumberBranchesLeft ()
 Increment the number of branch arms left for this branching object. More...
 
void setNumberBranchesLeft (int)
 Set the number of branch arms left for this branching object Just for forcing. More...
 
void decrementNumberBranchesLeft ()
 Decrement the number of branch arms left for this branching object. More...
 
virtual double branch ()
 Execute the actions required to branch, as specified by the current state of the branching object, and advance the object's state. More...
 
virtual bool boundBranch () const
 Return true if branch should fix variables. More...
 
int branchIndex () const
 Get the state of the branching object This is just the branch index. More...
 
void setBranchingIndex (int branchIndex)
 Set the state of the branching object. More...
 
double value () const
 Current value. More...
 
const OsiObjectoriginalObject () const
 Return pointer back to object which created. More...
 
void setOriginalObject (const OsiObject *object)
 Set pointer back to object which created. More...
 
virtual void checkIsCutoff (double)
 Double checks in case node can change its mind! Returns objective value Can change objective etc. More...
 
int columnNumber () const
 For debug. More...
 
virtual void print (const OsiSolverInterface *=NULL) const
 Print something about branch - only if log level high. More...
 

Protected Attributes

int firstBranch_
 Which way was first branch -1 = down, +1 = up. More...
 
- Protected Attributes inherited from OsiBranchingObject
double value_
 Current value - has some meaning about branch. More...
 
const OsiObjectoriginalObject_
 Pointer back to object which created. More...
 
int numberBranches_
 Number of branches. More...
 
short branchIndex_
 The state of the branching object. More...
 

Detailed Description

This just adds two-wayness to a branching object.

Definition at line 467 of file OsiBranchingObject.hpp.

Constructor & Destructor Documentation

OsiTwoWayBranchingObject::OsiTwoWayBranchingObject ( )

Default constructor.

OsiTwoWayBranchingObject::OsiTwoWayBranchingObject ( OsiSolverInterface solver,
const OsiObject originalObject,
int  way,
double  value 
)

Create a standard tw0-way branch object.

Specifies a simple two-way branch. Specify way = -1 to set the object state to perform the down arm first, way = 1 for the up arm.

OsiTwoWayBranchingObject::OsiTwoWayBranchingObject ( const OsiTwoWayBranchingObject )

Copy constructor.

virtual OsiTwoWayBranchingObject::~OsiTwoWayBranchingObject ( )
virtual

Destructor.

Member Function Documentation

OsiTwoWayBranchingObject& OsiTwoWayBranchingObject::operator= ( const OsiTwoWayBranchingObject rhs)

Assignment operator.

virtual double OsiTwoWayBranchingObject::branch ( OsiSolverInterface solver)
pure virtual

Sets the bounds for the variable according to the current arm of the branch and advances the object state to the next arm.

state. Returns change in guessed objective on next branch

Implements OsiBranchingObject.

Implemented in OsiBiLinearBranchingObject, OsiLotsizeBranchingObject, OsiSOSBranchingObject, OsiLinkBranchingObject, OsiIntegerBranchingObject, and OsiOldLinkBranchingObject.

int OsiTwoWayBranchingObject::firstBranch ( ) const
inline

Definition at line 500 of file OsiBranchingObject.hpp.

int OsiTwoWayBranchingObject::way ( ) const
inline

Way returns -1 on down +1 on up.

Definition at line 502 of file OsiBranchingObject.hpp.

Member Data Documentation

int OsiTwoWayBranchingObject::firstBranch_
protected

Which way was first branch -1 = down, +1 = up.

Definition at line 506 of file OsiBranchingObject.hpp.


The documentation for this class was generated from the following file: