Module org.maxicp

Package org.maxicp.cp.engine.constraints

Class InversePerm

java.lang.Object

org.maxicp.cp.engine.core.AbstractCPConstraint

org.maxicp.cp.engine.constraints.InversePerm

All Implemented Interfaces:

CPConstraint, ConcreteConstraint<ConcreteCPModel>

public class InversePerm
extends AbstractCPConstraint

InversePerm is a constraint that enforces that one permutation is the inverse of another. This means that if x[i] = j, then y[j] = i for all i and j in the domain of the variables.

Constructor Summary

Constructors

Constructor	Description
InversePerm(CPIntVar[] x, CPIntVar[] y)	Creates a constraint that enforces that one permutation is the inverse of another.

Method Summary

Modifier and Type	Method	Description
void	post()	Initializes the constraint when it is posted to the solver.
void	propagate()	Propagates the constraint.

Methods inherited from class org.maxicp.cp.engine.core.AbstractCPConstraint

getSolver, isActive, isScheduled, priority, registerDelta, setActive, setScheduled, updateDeltas

Methods inherited from class java.lang.Object

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

Constructor Details

InversePerm

public InversePerm(CPIntVar[] x,
 CPIntVar[] y)

Creates a constraint that enforces that one permutation is the inverse of another. This means that if x[i] = j, then y[j] = i for all i and j in the domain of the variables.

Parameters:

x - the first array of integer variables representing the permutation

y - the second array of integer variables representing the inverse permutation

Method Details

post

public void post()

Description copied from interface: CPConstraint

Initializes the constraint when it is posted to the solver.

Specified by:

post in interface CPConstraint

Overrides:

post in class AbstractCPConstraint

propagate

public void propagate()

Description copied from interface: CPConstraint

Propagates the constraint.

Specified by:

propagate in interface CPConstraint

Overrides:

propagate in class AbstractCPConstraint