ILOG CPLEX C++ API 9.0 Reference Manual

IloCplex::MIPCallbackI
MIPCallbackI::MIPCallbackI::
NodeData
Inner Class
Description
See Also
An instance of the class IloCplex::MIPCallbackI represents a user-written
callback in an application that uses an instance of IloCplex to solve a mixed integer
program (MIP). IloCplex calls the user-written callback prior to solving each node
in branch & cut search. This class offers member functions for accessing an incumbent
solution and its objective value from a user-written callback. It also offers methods for
accessing priority orders and statistical information such as the number of cuts.
Methods are also available to query the number of generated cuts for each type of cut
CPLEX generates. See the ILOG CPLEX User's Manual for more information about
cuts.
The methods of this class are protected for use in deriving a user-written callback class
and in implementing the main method there.
If an attempt is made to access information not available to an instance of this class, an
exception is thrown. For example, if there is no incumbent, the methods that query about
incumbents will throw an exception.
This class also provides the common application programming interface (API) for these
callback classes:
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IloCplex::NodeCallbackI
IloCplex::IncumbentCallbackI
IloCplex::DisjunctiveCutCallbackI
IloCplex::FractionalCutCallbackI
IloCplex::ProbingCallbackI
IloCplex::CutCallbackI
IloCplex::BranchCallbackI
IloCplex::HeuristicCallbackI
IloCplex::SolveCallbackI
IloCplex, IloCplex::BranchCallbackI, IloCplex::Callback,
IloCplex::CallbackI, IloCplex::CutCallbackI,
IloCplex::DisjunctiveCutCallbackI,
IloCplex::FractionalCutCallbackI,
IloCplex::HeuristicCallbackI, IloCplex::IncumbentCallbackI,
ILOG CPLEX C++ API 9.0 REFERENCE M ANUAL 175