Module org.maxicp

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

Class Span

java.lang.Object

org.maxicp.cp.engine.core.AbstractCPConstraint

org.maxicp.cp.engine.constraints.scheduling.Span

All Implemented Interfaces:

CPConstraint, ConcreteConstraint<ConcreteCPModel>

public class Span
extends AbstractCPConstraint

Span Constraint: Enforces that if the interval span is present, then it begins with the first interval intervals from the array alt and ends with the latest. If span is absent, then all the intervals of alt must be absent.

Author:

Augustin Delecluse

Constructor Summary

Constructors

Constructor	Description
Span(CPIntervalVar span, CPIntervalVar[] alts)	Creates a Span constraint linking the spanning interval span to the sub-intervals alts.

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

Span

public Span(CPIntervalVar span,
 CPIntervalVar[] alts)

Creates a Span constraint linking the spanning interval span to the sub-intervals alts.

Parameters:

span - the main interval variable spanning all present intervals in alts

alts - the array of sub-intervals

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