org.onosproject.net.intent.constraint

Class BooleanConstraint

java.lang.Object

org.onosproject.net.intent.constraint.BooleanConstraint

All Implemented Interfaces:

Constraint

Direct Known Subclasses:

AnnotationConstraint, BandwidthConstraint, EncapsulationConstraint, LinkTypeConstraint, ObstacleConstraint, ProtectedConstraint

@Beta
public abstract class BooleanConstraint
extends java.lang.Object
implements Constraint

Abstract base class for various constraints that evaluate link viability in a yes/no fashion.

Constructor Summary

Constructors

Constructor and Description
BooleanConstraint()

Method Summary

Modifier and Type	Method and Description
double	cost(Link link, ResourceContext context) Evaluates the specified link and provides the cost for its traversal.
abstract boolean	isValid(Link link, ResourceContext context) Returns true if the specified link satisfies the constraint.
boolean	validate(Path path, ResourceContext context) Validates that the specified path satisfies the constraint.

Methods inherited from class java.lang.Object

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

Constructor Detail

BooleanConstraint

public BooleanConstraint()

Method Detail

isValid

public abstract boolean isValid(Link link,
                                ResourceContext context)

Returns true if the specified link satisfies the constraint.

Parameters:

link - link to be validated

context - resource context for checking available resources

Returns:

true if link is viable

cost

public double cost(Link link,
                   ResourceContext context)

Evaluates the specified link and provides the cost for its traversal. Negative return value means the specified link does not satisfy this constraint.

Specified by:

cost in interface Constraint

Parameters:

link - link to be evaluated

context - resource context for validating availability of resources

Returns:

cost of link traversal

validate

public boolean validate(Path path,
                        ResourceContext context)

Description copied from interface: Constraint

Validates that the specified path satisfies the constraint.

Specified by:

validate in interface Constraint

Parameters:

path - path to be validated

context - resource context for validating availability of resources

Returns:

cost of link traversal