org.apache.ambari.server.controller.spi

Interface Predicate

All Known Subinterfaces:

BasePredicate

All Known Implementing Classes:

AlwaysPredicate, AndPredicate, ArrayPredicate, CategoryIsEmptyPredicate, CategoryPredicate, ComparisonPredicate, EqualsPredicate, FilterPredicate, GreaterEqualsPredicate, GreaterPredicate, LessEqualsPredicate, LessPredicate, NotPredicate, OrPredicate, PropertyPredicate, UnaryPredicate

public interface Predicate

The predicate is used to filter the resources returned from the cluster controller. The predicate can examine a resource object and determine whether or not it should be included in the returned results.

Method Summary

Modifier and Type	Method and Description
boolean	evaluate(Resource resource) Evaluate the predicate for the given resource.

Method Detail

evaluate

boolean evaluate(Resource resource)

Evaluate the predicate for the given resource.

Parameters:

resource - the resource to evaluate the predicate against

Returns:

the result of applying the predicate to the given resource