ILOG CPLEX C++ API 9.0 Reference Manual

IloCplex::CallbackI
callbacks can also be called from presolve, probing, fractional cuts, and disjunctive
cuts.
◆ Control callbacks enable you to direct the search when you are solving a MIP in an
instance of IloCplex. For example, control callbacks enable you to select the next
node to process or to control the creation of subnodes (among other possibilities).
Existing extractables should never be modified within a callback. Temporary
extractables, such as arrays, expressions, and range constraints, can be created and
modified. Temporary extractables are often useful, for example, for computing cuts.
See Also
Methods
ILOBARRIERCALLBACK0, ILOBRANCHCALLBACK0, IloCplex,
IloCplex::BarrierCallbackI, IloCplex::BranchCallbackI,
IloCplex::Callback, IloCplex::ControlCallbackI,
IloCplex::CrossoverCallbackI, IloCplex::CutCallbackI,
IloCplex::DisjunctiveCutCallbackI,
IloCplex::SimplexCallbackI,
IloCplex::FractionalCutCallbackI,
IloCplex::HeuristicCallbackI, IloCplex::IncumbentCallbackI,
IloCplex::ContinuousCallbackI, IloCplex::MIPCallbackI,
IloCplex::NetworkCallbackI, IloCplex::NodeCallbackI,
IloCplex::PresolveCallbackI, IloCplex::ProbingCallbackI,
IloCplex::SolveCallbackI, ILOCROSSOVERCALLBACK0,
ILOCUTCALLBACK0, ILOBRANCHCALLBACK0,
ILODISJUNCTIVECUTCALLBACK0, ILOFRACTIONALCUTCALLBACK0,
ILOHEURISTICCALLBACK0, ILOINCUMBENTCALLBACK0,
ILOCONTINUOUSCALLBACK0, ILOMIPCALLBACK0, ILONETWORKCALLBACK0,
ILONODECALLBACK0, ILOPRESOLVECALLBACK0, ILOPROBINGCALLBACK0,
ILOSIMPLEXCALLBACK0, ILOSOLVECALLBACK0
protected void abort()
This method stops the current optimization.
protected virtual CallbackI * duplicateCallback()
This virtual method must be implemented to create a copy of the invoking callback
object on the same environment. Typically the following implementation will work for a
callback class called MyCallbackI:
IloCplex::CallbackI* MyCallbackI::duplicateCallback() const {
return (new (getEnv()) MyCallbackI(*this));
}
This method is called by an IloCplex object in two cases:
ILOG CPLEX C++ API 9.0 REFERENCE M ANUAL 100