BooleanConstraint (ONOS Java API (2.5.6))

java.lang.Object
- org.onosproject.net.intent.constraint.BooleanConstraint

All Implemented Interfaces:

Constraint

Direct Known Subclasses:

AnnotationConstraint, BandwidthConstraint, EncapsulationConstraint, LinkTypeConstraint, MeteredConstraint, ObstacleConstraint, ProtectedConstraint, TierConstraint
```
@Beta
public abstract class BooleanConstraint
extends Object
implements Constraint
```
Abstract base class for various constraints that evaluate link viability in a yes/no fashion.

Constructor Summary

Constructors
Constructor Description

BooleanConstraint()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	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