org.apache.dubbo.common.function

Interface Predicates

public interface Predicates

The utilities class for Java Predicate

Since:

2.7.5

Field Summary

Fields

Modifier and Type	Field and Description
static Predicate[]	EMPTY_ARRAY

Method Summary

Modifier and Type	Method and Description
static <T> Predicate<T>	alwaysFalse() Predicate always return false
static <T> Predicate<T>	alwaysTrue() Predicate always return true
static <T> Predicate<T>	and(Predicate<T>... predicates) a composed predicate that represents a short-circuiting logical AND of predicates
static <T> Predicate<T>	or(Predicate<T>... predicates) a composed predicate that represents a short-circuiting logical OR of predicates

Field Detail

EMPTY_ARRAY

static final Predicate[] EMPTY_ARRAY

Method Detail

alwaysTrue

static <T> Predicate<T> alwaysTrue()

Predicate always return true

Type Parameters:

T - the type to test

Returns:

true

alwaysFalse

static <T> Predicate<T> alwaysFalse()

Predicate always return false

Type Parameters:

T - the type to test

Returns:

false

and

static <T> Predicate<T> and(Predicate<T>... predicates)

a composed predicate that represents a short-circuiting logical AND of predicates

Type Parameters:

T - the type to test

Parameters:

predicates - predicates

Returns:

non-null

or

static <T> Predicate<T> or(Predicate<T>... predicates)

a composed predicate that represents a short-circuiting logical OR of predicates

Type Parameters:

T - the detected type

Parameters:

predicates - predicates

Returns:

non-null