IloOr

An instance of IloOr represents a disjunctive constraint. In other words, it defines a disjunctive-OR among any number of constraints. Since an instance of IloOr is a constraint itself, you can build up extensive disjunctions by adding constraints to an instance of IloOr by means of the member function IloOr::add. You can also remove constraints from an instance of IloOr by means of the member function IloOr::remove.

The elements of a disjunctive constraint must be in the same environment.

In order for the constraint to take effect, you must add it to a model with the template IloAdd or the member function IloModel::add and extract the model for an algorithm with the member function IloAlgorithm::extract.

Most member functions in this class contain assert statements. For an explanation of the macro NDEBUG (a way to turn on or turn off these assert statements), see the concept Assert and NDEBUG.

Disjunctive Goals

If you would like to represent a disjunctive-OR as a goal (rather than a constraint), then you should consider the function IloOrGoal, documented in the ILOG Solver Reference Manual.

What Is Extracted

All the constraints (that is, instances of IloConstraint or one of its subclasses) that have been added to a disjunctive constraint (an instance of IloOr) and that have not been removed from it will be extracted when an algorithm such as IloCplex, IloCP, or IloSolver extracts the constraint.

Example

For example, you may write:

 IloOr myor(env);
 myor.add(constraint1);
 myor.add(constraint2);
 myor.add(constraint3);

Those lines are equivalent to :

 IloOr or = constraint1 || constraint2 || constraint3;

This constructor creates an empty handle. You must initialize it before you use it.

This constructor creates a handle object from a pointer to an implementation object.

Constructor Summary
`public`	`IloOr()`
`public`	`IloOr(IloOrI * impl)`
`public`	`IloOr(const IloEnv env, const char * name=0)`

Method Summary
`public void`	`add(const IloConstraintArray cons) const`
`public void`	`add(const IloConstraint con) const`
`public IloOrI *`	`getImpl() const`
`public void`	`remove(const IloConstraintArray cons) const`
`public void`	`remove(const IloConstraint con) const`

Inherited Methods from `IloConstraint`
`getImpl`

Inherited Methods from `IloIntExprArg`
`getImpl`

Inherited Methods from `IloNumExprArg`
`getImpl`

Inherited Methods from `IloExtractable`
`asConstraint, asIntExpr, asModel, asNumExpr, asObjective, asVariable, end, getEnv, getId, getImpl, getName, getObject, isConstraint, isIntExpr, isModel, isNumExpr, isObjective, isVariable, setName, setObject`

This constructor creates a disjunctive constraint for use in env. The optional argument name is set to 0 by default.

This member function makes all the elements in array elements of the invoking disjunctive constraint. In other words, it applies the invoking disjunctive constraint to all the elements of array.

Note

The member function add notifies Concert Technology algorithms about this change of this invoking object.

This member function makes constraint one of the elements of the invoking disjunctive constraint. In other words, it applies the invoking disjunctive constraint to constraint.

Note

The member function add notifies Concert Technology algorithms about this change of this invoking object.

This member function returns a pointer to the implementation object of the invoking handle.

This member function removes all the elements of array from the invoking disjunctive constraint so that the invoking disjunctive constraint no longer applies to any of those elements.

Note

The member function remove notifies Concert Technology algorithms about this change of this invoking object.

This member function removes constraint from the invoking disjunctive constraint so that the invoking disjunctive constraint no longer applies to constraint.

Note

The member function remove notifies Concert Technology algorithms about this change of this invoking object.

Class IloOr