ilog.opl

Class IloCplex.CrossoverCallback

java.lang.Object

ilog.opl.IloCplex.Callback

ilog.opl.IloCplex.CrossoverCallback

All Implemented Interfaces:

java.lang.Cloneable

Enclosing class:

IloCplex

public abstract static class IloCplex.CrossoverCallback
extends IloCplex.Callback

The base class for user-written callbacks during crossover from a barrier solution to a simplex basis.

An instance of the class CrossoverCallback represents a user-written callback in an application that uses an instance of IloCplex to solve a problem by means of the barrier optimizer, with the crossover option. An instance of IloCplex calls this callback regularly during crossover. For details about crossover, see the ILOG CPLEX User's Manual.

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.Callback

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	IloCplex.CrossoverCallback() Constructor for user-written crossover callback.

Method Summary

Methods

Modifier and Type	Method and Description
protected int	getNdualExchanges() Returns the number of dual exchange operations at the moment the callback is called.
protected int	getNdualPushes() Returns the number of dual push operations at the moment the callback is called.
protected int	getNprimalExchanges() Returns the number of primal exchange operations at the moment the callback is called.
protected int	getNprimalPushes() Returns the number of primal push operations at the moment the callback is called.
protected int	getNsuperbasics() Returns the number of super basics created at the moment the callback is called.

Methods inherited from class ilog.opl.IloCplex.Callback

abort, getCplexTime, getDetTime, getEndDetTime, getEndTime, getEnvImpl, getModel, getNcols, getNQCs, getNrows, getStartDetTime, getStartTime, main

Methods inherited from class java.lang.Object

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

Constructor Detail

IloCplex.CrossoverCallback

protected IloCplex.CrossoverCallback()

Constructor for user-written crossover callback. This constructor can be called only to construct objects of derived user-written callback classes, but not to construct IloCplex.CrossoverCallback objects directly.

Method Detail

getNprimalPushes

protected int getNprimalPushes()
                        throws IloException

Returns the number of primal push operations at the moment the callback is called.

Throws:

IloException

Returns:

The number of primal push operations.

getNprimalExchanges

protected int getNprimalExchanges()
                           throws IloException

Returns the number of primal exchange operations at the moment the callback is called.

Throws:

IloException

Returns:

The number of primal exchange operations.

getNdualPushes

protected int getNdualPushes()
                      throws IloException

Returns the number of dual push operations at the moment the callback is called.

Throws:

IloException

Returns:

The number of dual push operations.

getNdualExchanges

protected int getNdualExchanges()
                         throws IloException

Returns the number of dual exchange operations at the moment the callback is called.

Throws:

IloException

Returns:

The number of dual exchange operations.

getNsuperbasics

protected int getNsuperbasics()
                       throws IloException

Returns the number of super basics created at the moment the callback is called.

Throws:

IloException

Returns:

The number of super basics created.