| Overview | Group | Tree | Graph | Deprecated | Index | Concepts |
An instance of IloAlternative represents an
alternative constraint. An alternative constraint between an
interval variable a and a set of interval variables
{b1,...,bn} models an exclusive alternative between
{b1,...,bn}. If interval a is present,
then exactly one of intervals {b1,...,bn} is present
and a starts and ends together with this specific
interval. Interval a is absent if and only if all intervals
in {b1,...,bn} are absent.
Additionally, an alternative constraint can specify a
non-negative integer cardinality c. In this case, if
interval a is present, it is not 1 but
c intervals in the set {b1,...,bn} that
will be selected and all these c intervals will have
to start and end together with interval a.
You must add this constraint to a model and extract the model to an algorithm in order for it to be taken into account.
Note: This constraint cannot be used in a logical constraint.
For more information on the alternative constraint, see the concept Constraints on groups of interval variables in CP Optimizer.
| Method Summary | |
|---|---|
public IloAlternativeI * | getImpl() const |
public | IloAlternative() |
public | IloAlternative(IloAlternativeI * impl) |
public | IloAlternative(const IloEnv env, const IloIntervalVar a, const IloIntervalVarArray bs, const char * name=0) |
public | IloAlternative(const IloEnv env, const IloIntervalVar a, const IloIntervalVarArray bs, IloInt c, const char * name=0) |
public | IloAlternative(const IloEnv env, const IloIntervalVar a, const IloIntervalVarArray bs, const IloIntExprArg c, const char * name=0) |
Inherited Methods from IloConstraint |
|---|
getImpl, IloConstraint, IloConstraint |
Inherited Methods from IloIntExprArg |
|---|
getImpl, IloIntExprArg, IloIntExprArg |
Inherited Methods from IloNumExprArg |
|---|
getImpl, IloNumExprArg, IloNumExprArg |
Inherited Methods from IloExtractable |
|---|
asConstraint, asIntExpr, asModel, asNumExpr, asObjective, asVariable, end, getEnv, getId, getImpl, getName, getObject, IloExtractable, isConstraint, isIntExpr, isModel, isNumExpr, isObjective, isVariable, removeFromAll, setLocation, setName, setObject |
| Method Detail |
|---|
This constructor creates an alternative constraint between
interval variable a and the set of interval
variables in the array bs and makes it part of the
environment env. If a is present, one
of the intervals in bs will be selected by the
alternative constraint.
This constructor creates an alternative constraint between
interval variable a and the set of interval
variables in the array bs with cardinality
c and makes it part of the environment
env. If a is present, c
intervals in bs will be selected by the alternative
constraint.
This constructor creates an alternative constraint between
interval variable a and the set of interval
variables in the array bs with cardinality
c and makes it part of the environment
env. If a is present, c
intervals in bs will be selected by the alternative
constraint.