Module is.codion.common.core

Package is.codion.common.value

Interface ValuesObserver<T,C extends Collection<T>>

Type Parameters:

T - the values type

C - the collection type

All Superinterfaces:

EventObserver<C>, Iterable<T>, Supplier<C>, ValueObserver<C>

All Known Subinterfaces:

ValueList<T>, ValueListObserver<T>, Values<T,C>, ValueSet<T>, ValueSetObserver<T>

public interface ValuesObserver<T,C extends Collection<T>>
extends ValueObserver<C>, Iterable<T>

A read only values observer

Method Summary

Modifier and Type	Method	Description
boolean	contains(T value)	Returns true if this Values instance contains the specified element
boolean	containsAll(Collection<T> values)	Returns true if this Values instance contains all of the elements of the specified collection
boolean	empty()
boolean	notEmpty()
int	size()

Methods inherited from interface is.codion.common.event.EventObserver

addConsumer, addListener, addWeakConsumer, addWeakListener, removeConsumer, removeListener, removeWeakConsumer, removeWeakListener

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Methods inherited from interface java.util.function.Supplier

get

Methods inherited from interface is.codion.common.value.ValueObserver

isEqualTo, isNotEqualTo, isNotNull, isNull, isNullable, optional

Method Details

contains

boolean contains(T value)

Returns true if this Values instance contains the specified element

Parameters:

value - the element

Returns:

true if this Values instance contains the specified element

containsAll

boolean containsAll(Collection<T> values)

Returns true if this Values instance contains all of the elements of the specified collection

Parameters:

values - the elements to check

Returns:

true if this Values instance contains all of the elements of the specified collection

empty

boolean empty()

Returns:

true if this Values instance is empty

notEmpty

boolean notEmpty()

Returns:

true if this Values instance is not empty

size

int size()

Returns:

the number of elements in this Values instance