io.micronaut.core.convert.value

Interface ConvertibleValues<V>

Type Parameters:

V - The generic value

All Superinterfaces:

Iterable<Map.Entry<String,V>>, ValueResolver<CharSequence>

All Known Subinterfaces:

BeanElementVisitorContext, ConvertibleMultiValues<V>, Cookies, Headers, HttpHeaders, HttpParameters, MessageHeaders, MutableConvertibleMultiValues<V>, MutableConvertibleValues<V>, MutableHeaders, MutableHttpHeaders, MutableHttpParameters, Session, VisitorContext, WebSocketSession

All Known Implementing Classes:

CaseInsensitiveMutableHttpHeaders, ConvertibleMultiValuesMap, ConvertibleValuesMap, GroovyVisitorContext, InMemorySession, JavaVisitorContext, JsonNodeConvertibleValues, MutableConvertibleMultiValuesMap, MutableConvertibleValuesMap, NettyCookies, NettyHttpHeaders, NettyHttpParameters, NettyWebSocketSession, ObjectNodeConvertibleValues, SimpleCookies, SimpleHttpHeaders, SimpleHttpParameters

public interface ConvertibleValues<V>
extends ValueResolver<CharSequence>, Iterable<Map.Entry<String,V>>

An interface for classes that represent a map-like structure of values that can be converted.

Since:

1.0

Author:

Graeme Rocher

Field Summary

Fields

Modifier and Type	Field and Description
static ConvertibleValues	EMPTY

Method Summary

Modifier and Type	Method and Description
default Map<String,V>	asMap() Return this ConvertibleValues as a map for the given key type and value type.
default <KT,VT> Map<KT,VT>	asMap(Class<KT> keyType, Class<VT> valueType) Return this ConvertibleValues as a map for the given key type and value type.
default Properties	asProperties() Return this ConvertibleValues as a Properties object returning only keys and values that can be represented as a string.
default boolean	contains(String name) Whether the given key is contained within these values.
static <V> ConvertibleValues<V>	empty() An empty ConvertibleValues.
default void	forEach(BiConsumer<String,V> action) Performs the given action for each value.
default V	getValue(CharSequence name) Get a raw value without any conversion.
default Class<V>	getValueType()
default boolean	isEmpty()
default Iterator<Map.Entry<String,V>>	iterator()
Set<String>	names()
static <T> ConvertibleValues<T>	of(Map<? extends CharSequence,T> values) Creates a new ConvertibleValues for the values.
default Map<String,V>	subMap(String prefix, Argument<V> valueType) Returns a submap for all the keys with the given prefix.
default Map<String,V>	subMap(String prefix, ArgumentConversionContext<V> valueType) Returns a submap for all the keys with the given prefix.
default Map<String,V>	subMap(String prefix, Class<V> valueType) Returns a submap for all the keys with the given prefix.
Collection<V>	values()

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

get, get, get, get

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

EMPTY

static final ConvertibleValues EMPTY

Method Detail

names

Set<String> names()

Returns:

The names of the values

values

Collection<V> values()

Returns:

The values

isEmpty

default boolean isEmpty()

Returns:

Whether this values is empty

getValueType

default Class<V> getValueType()

Returns:

The concrete type of the value

contains

default boolean contains(String name)

Whether the given key is contained within these values.

Parameters:

name - The key name

Returns:

True if it is

getValue

@Nullable
default V getValue(CharSequence name)

Get a raw value without any conversion.

Parameters:

name - The key name

Returns:

True if it is

Since:

2.0.0

forEach

default void forEach(BiConsumer<String,V> action)

Performs the given action for each value. Note that in the case where multiple values exist for the same header then the consumer will be invoked multiple times for the same key.

Parameters:

action - The action to be performed for each entry

Throws:

NullPointerException - if the specified action is null

Since:

1.0

asMap

default Map<String,V> asMap()

Return this ConvertibleValues as a map for the given key type and value type. The map represents a copy of the data held by this instance.

Returns:

The values

asMap

default <KT,VT> Map<KT,VT> asMap(Class<KT> keyType,
                                 Class<VT> valueType)

Return this ConvertibleValues as a map for the given key type and value type. If any entry cannot be converted to the target key/value type then the entry is simply excluded, hence the size of the map returned may not match the size of this ConvertibleValues.

Type Parameters:

KT - The key type

VT - The value type

Parameters:

keyType - The key type

valueType - The value type

Returns:

The values with the key converted to the given key type and the value to the given value type.

asProperties

default Properties asProperties()

Return this ConvertibleValues as a Properties object returning only keys and values that can be represented as a string.

Returns:

The values with the key converted to the given key type and the value to the given value type.

Since:

1.0.3

subMap

default Map<String,V> subMap(String prefix,
                             Class<V> valueType)

Returns a submap for all the keys with the given prefix.

Parameters:

prefix - The prefix

valueType - The value type

Returns:

The submap

subMap

default Map<String,V> subMap(String prefix,
                             Argument<V> valueType)

Returns a submap for all the keys with the given prefix.

Parameters:

prefix - The prefix

valueType - The value type

Returns:

The submap

subMap

default Map<String,V> subMap(String prefix,
                             ArgumentConversionContext<V> valueType)

Returns a submap for all the keys with the given prefix.

Parameters:

prefix - The prefix

valueType - The value type

Returns:

The submap

iterator

default Iterator<Map.Entry<String,V>> iterator()

Specified by:

iterator in interface Iterable<Map.Entry<String,V>>

of

static <T> ConvertibleValues<T> of(Map<? extends CharSequence,T> values)

Creates a new ConvertibleValues for the values.

Type Parameters:

T - The target generic type

Parameters:

values - A map of values

Returns:

The values

empty

static <V> ConvertibleValues<V> empty()

An empty ConvertibleValues.

Type Parameters:

V - The generic type

Returns:

The empty ConvertibleValues