ilog.cplex
Class IloCplex.FractionalCutCallback

java.lang.Object
  ilog.cplex.IloCplex.Callback
      ilog.cplex.IloCplex.OptimizationCallback
          ilog.cplex.IloCplex.MIPInfoCallback
              ilog.cplex.IloCplex.MIPCallback
                  ilog.cplex.IloCplex.FractionalCutCallback

All Implemented Interfaces:

java.lang.Cloneable

Enclosing class:

IloCplex

public abstract static class IloCplex.FractionalCutCallback

extends IloCplex.MIPCallback

This is the callback class to use to control or query the progress of the generation of fractional cuts when a mixed integer programming problem (MIP) is being solved.

An instance of this class represents a user-written control or query callback in an application that uses an instance of IloCplex to solve a mixed integer programming problem (a MIP). It allows you to control the progress of the generation of fractional cuts.

The constructor and methods of this class are protected to make sure that they are used only to derive a user-written callback class or to implement the main method in it.

See Also:

IloCplex.MIPCallback, IloCplex.MIPInfoCallback, IloCplex.FractionalCutInfoCallback

Constructor Summary

protected

IloCplex.FractionalCutCallback() Constructor for user-written fractional cut callbacks.

Method Summary

protected double

getProgress() Returns the fraction of completion of the fractional cut generation.

Methods inherited from class ilog.cplex.IloCplex.MIPCallback

getNcliques, getNcovers, getNdisjunctiveCuts, getNflowCovers, getNflowPaths, getNfractionalCuts, getNGUBcovers, getNimpliedBounds, getNMIRs, getObjCoef, getObjCoefs, getObjCoefs

Methods inherited from class ilog.cplex.IloCplex.MIPInfoCallback

getBestObjValue, getCutoff, getDirection, getIncumbentObjValue, getIncumbentValue, getIncumbentValues, getIncumbentValues, getNiterations, getNnodes, getNremainingNodes, getPriority, hasIncumbent

Methods inherited from class ilog.cplex.IloCplex.OptimizationCallback

getModel, getNcols, getNQCs, getNrows

Methods inherited from class ilog.cplex.IloCplex.Callback

abort, main

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

IloCplex.FractionalCutCallback

protected IloCplex.FractionalCutCallback()

Constructor for user-written fractional cut callbacks.

This constructor can be called only to construct objects of derived user-written callback classes, but not to construct FractionalCutCallback objects directly.

Method Detail

getProgress

protected double getProgress()
                      throws IloException

Returns the fraction of completion of the fractional cut generation.

The returned values are in the range of 0.0 to 1.0.

Returns:

The fraction of completion of the fractional cut generation.

Throws:

IloException