org.sellcom.core.util.function

Class StandardPredicates

java.lang.Object

org.sellcom.core.util.function.StandardPredicates

public class StandardPredicates
extends Object

Standard predicates.

Since:

1.0

Method Summary

Modifier and Type	Method and Description
static <T> Predicate<T>	isAssignableFrom(Class<?> clazz) Returns a predicate checking whether its argument is an instance of the given class or any of its descendant classes.
static <T> Predicate<T>	isInstanceOf(Class<?> clazz) Returns a predicate checking whether its argument is an instance of the given class.
static <T> Predicate<T>	isNonNull() Returns a predicate checking whether its argument is non-null.
static <T> Predicate<T>	isNull() Returns a predicate checking whether its argument is null.

Methods inherited from class java.lang.Object

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

Method Detail

isAssignableFrom

public static <T> Predicate<T> isAssignableFrom(Class<?> clazz)

Returns a predicate checking whether its argument is an instance of the given class or any of its descendant classes.

Throws:

IllegalArgumentException - if clazz is null

Since:

1.0

See Also:

MoreObjects.isDescendantOf(Object, Class)

isInstanceOf

public static <T> Predicate<T> isInstanceOf(Class<?> clazz)

Returns a predicate checking whether its argument is an instance of the given class.

Throws:

IllegalArgumentException - if clazz is null

Since:

1.0

See Also:

MoreObjects.isInstanceOf(Object, Class)

isNonNull

public static <T> Predicate<T> isNonNull()

Returns a predicate checking whether its argument is non-null.

Since:

1.0

isNull

public static <T> Predicate<T> isNull()

Returns a predicate checking whether its argument is null.

Since:

1.0