org.apache.hadoop.yarn.api.resource

Interface PlacementConstraint.Visitable

All Known Implementing Classes:

PlacementConstraint.AbstractConstraint, PlacementConstraint.And, PlacementConstraint.CardinalityConstraint, PlacementConstraint.CompositeConstraint, PlacementConstraint.DelayedOr, PlacementConstraint.Or, PlacementConstraint.SingleConstraint, PlacementConstraint.TargetConstraint, PlacementConstraint.TargetExpression, PlacementConstraint.TimedPlacementConstraint

Enclosing class:

PlacementConstraint

@InterfaceAudience.Private
public static interface PlacementConstraint.Visitable

Interface used to enable the elements of the constraint tree to be visited.

Method Summary

Modifier and Type	Method and Description
<T> T	accept(PlacementConstraint.Visitor<T> visitor) Visitor pattern.

Method Detail

accept

<T> T accept(PlacementConstraint.Visitor<T> visitor)

Visitor pattern.

Type Parameters:

T - defines the type that the visitor will use and the return type of the accept.

Parameters:

visitor - visitor to be used

Returns:

the result of visiting a given object.