Module org.maxicp

Package org.maxicp.cp.engine.constraints.scheduling

Class IsStartBeforeStart

java.lang.Object

org.maxicp.cp.engine.core.AbstractCPConstraint

org.maxicp.cp.engine.constraints.scheduling.IsStartBeforeStart

All Implemented Interfaces:

CPConstraint, ConcreteConstraint<ConcreteCPModel>

public class IsStartBeforeStart
extends AbstractCPConstraint

Reified is start before start constraint

Constructor Summary

Constructors

Constructor	Description
IsStartBeforeStart(CPIntervalVar a, CPIntervalVar b, CPBoolVar isBefore)	Creates a constraint that link a boolean variable representing whether an interval start before the start of another one

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

IsStartBeforeStart

public IsStartBeforeStart(CPIntervalVar a,
 CPIntervalVar b,
 CPBoolVar isBefore)

Creates a constraint that link a boolean variable representing whether an interval start before the start of another one

Parameters:

a - left hand side of the end before start operator

b - right hand side of the end before start operator

isBefore - a boolean variable that is true if and only if the start of a comes before or at the same time as the start of b

See Also:

• CPFactory.isStartBeforeStart(CPIntervalVar, CPIntervalVar)

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