org.apache.ambari.server.controller.predicate

Class Predicates

java.lang.Object

org.apache.ambari.server.controller.predicate.Predicates

public class Predicates
extends Object

Constructor Summary

Constructors

Constructor and Description
Predicates()

Method Summary

Modifier and Type	Method and Description
static Function<Predicate,Predicate>	and(Predicate presetPredicate) Creates a Function which, when called, creates an AndPredicate of its input and the presetPredicate.
static Optional<Predicate>	anyOf(Collection<? extends Predicate> predicates) Creates an OrPredicate of the given predicates if any.

Methods inherited from class java.lang.Object

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

Constructor Detail

Predicates

public Predicates()

Method Detail

anyOf

public static Optional<Predicate> anyOf(Collection<? extends Predicate> predicates)

Creates an OrPredicate of the given predicates if any.

Parameters:

predicates - collection of predicates to be OR-ed

Returns:

Optional of the OrPredicate if any predicates are given, otherwise an empty Optional

and

public static Function<Predicate,Predicate> and(Predicate presetPredicate)

Creates a Function which, when called, creates an AndPredicate of its input and the presetPredicate. The function can then be used to transform Optionals or streams.

Parameters:

presetPredicate - this predicate will be AND-ed with the input to the Function

Returns:

the Function