Module org.maxicp

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

Class StartBeforeStart

java.lang.Object

org.maxicp.cp.engine.core.AbstractCPConstraint

org.maxicp.cp.engine.constraints.scheduling.StartBeforeStart

All Implemented Interfaces:

CPConstraint, ConcreteConstraint<ConcreteCPModel>

public class StartBeforeStart
extends AbstractCPConstraint

Constrains interval A to start before or at the start of interval B.

Author:

Charles Thomas

Constructor Summary

Constructors

Constructor	Description
StartBeforeStart(CPIntervalVar A, CPIntervalVar B)	Creates a constraint enforcing start(A) <= start(B) whenever both A and B are present.

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

StartBeforeStart

public StartBeforeStart(CPIntervalVar A,
 CPIntervalVar B)

Creates a constraint enforcing start(A) <= start(B) whenever both A and B are present.

Parameters:

A - the first interval variable

B - the second interval variable

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