ilog.cplex

Class IloCplex.SolutionSource

java.lang.Object

ilog.cplex.IloCplex.SolutionSource

Enclosing class:

IloCplex

public static final class IloCplex.SolutionSource
extends java.lang.Object

This enumeration lists the values that tell for which type of solution the incumbent callback or lazy constraint callback was invoked.

• NodeSolution
• HeuristicSolution
• UserSolution
• MIPStartSolution

Field Summary

Fields

Modifier and Type	Field and Description
static int	HeuristicSolution The integral solution was found by a CPLEX internal heuristic.
static int	MIPStartSolution The integral solution was found during MIP start processing.
static int	NodeSolution The integral solution was found as the solution to an LP-relaxation of a node in the search tree.
static int	UserSolution The integral solution was found by the user's heuristic callback callback function.

Constructor Summary

Constructors

Constructor and Description
IloCplex.SolutionSource()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

NodeSolution

public static final int NodeSolution

The integral solution was found as the solution to an LP-relaxation of a node in the search tree.

See Also:

Constant Field Values

HeuristicSolution

public static final int HeuristicSolution

The integral solution was found by a CPLEX internal heuristic.

See Also:

Constant Field Values

UserSolution

public static final int UserSolution

The integral solution was found by the user's heuristic callback callback function.

This value is never returned for lazy constraint callbacks.

See Also:

Constant Field Values

MIPStartSolution

public static final int MIPStartSolution

The integral solution was found during MIP start processing.

Note that callbacks invoked in this situation do not have the full API available. For example, you cannot set/get user data to a node, nor can you do anything else that requires a search tree node context.

See Also:

Constant Field Values

Constructor Detail

IloCplex.SolutionSource

public IloCplex.SolutionSource()