ilog.cplex
Class IloCplex.FractionalCutCallback

java.lang.Object
  |
  +--ilog.cplex.IloCplex.Callback
        |
        +--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

An instance of this class represents a user-written callback in an application that uses an instance of IloCplex to solve a mixed integer programming problem (a MIP). It allows you to monitor 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

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

getBestObjValue, getCutoff, getDirection, getIncumbentObjValue, getIncumbentValue, getIncumbentValues, getIncumbentValues, getMyThreadNum, getNcliques, getNcovers, getNdisjunctiveCuts, getNflowCovers, getNflowPaths, getNfractionalCuts, getNGUBcovers, getNimpliedBounds, getNiterations, getNMIRs, getNnodes, getNremainingNodes, getObjCoef, getObjCoefs, getObjCoefs, getPriority, getUserThreads, hasIncumbent

Methods inherited from class ilog.cplex.IloCplex.Callback

abort, getModel, getNcols, getNQCs, getNrows, 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 IloCplex.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.

IloException