io.micronaut.core.value

Interface OptionalMultiValues<V>

Type Parameters:

V - The generic value

All Superinterfaces:

java.lang.Iterable<java.lang.CharSequence>, OptionalValues<java.util.List<V>>

public interface OptionalMultiValues<V>
extends OptionalValues<java.util.List<V>>

An OptionalValues that for each key features an Optional List of values.

Since:

1.0

Author:

Graeme Rocher

Field Summary

Fields

Modifier and Type	Field and Description
static OptionalMultiValues	EMPTY_VALUES Constant for empty values.

Method Summary

Modifier and Type	Method and Description
static <T> OptionalMultiValues<T>	empty() An empty OptionalValues.
default java.util.Optional<V>	getFirst(java.lang.CharSequence name) Retrieve a value if it is present.
static <T> OptionalMultiValues<T>	of(java.util.Map<java.lang.CharSequence,java.util.List<T>> values) Creates a new OptionalValues for the given type and values.

Methods inherited from interface io.micronaut.core.value.OptionalValues

forEach, get, isEmpty, of, values

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Field Detail

EMPTY_VALUES

static final OptionalMultiValues EMPTY_VALUES

Constant for empty values.

Method Detail

getFirst

default java.util.Optional<V> getFirst(java.lang.CharSequence name)

Retrieve a value if it is present.

Parameters:

name - The name of the value

Returns:

An Optional of the value

empty

static <T> OptionalMultiValues<T> empty()

An empty OptionalValues.

Specified by:

empty in interface OptionalValues<java.util.List<V>>

Type Parameters:

T - The generic type

Returns:

The empty values

of

static <T> OptionalMultiValues<T> of(java.util.Map<java.lang.CharSequence,java.util.List<T>> values)

Creates a new OptionalValues for the given type and values.

Type Parameters:

T - The target generic type

Parameters:

values - A map of values

Returns:

The values