io.r2dbc.proxy.core

Interface ValueStore

All Known Implementing Classes:

DefaultValueStore

public interface ValueStore

Custom value store.

Author:

Tadaya Tsuyukubo

See Also:

ConnectionInfo, MethodExecutionInfo, QueryExecutionInfo

Method Summary

Modifier and Type	Method and Description
static ValueStore	create() Create default ValueStore.
Object	get(Object key) Get the value associated to the key.
<T> T	get(Object key, Class<T> type) Get the value associated to the key and cast to the type.
<T> T	getOrDefault(Object key, T defaultValue) Get the value associated to the key; otherwise returns specified value.
void	put(Object key, Object value) Store a value associating the provided key.
void	putAll(Map<Object,Object> map) Store all key value pairs from provided map.
Object	remove(Object key) Remove the value associated to the provided key.

Method Detail

create

static ValueStore create()

Create default ValueStore.

Returns:

value store

get

@Nullable
Object get(Object key)

Get the value associated to the key.

Parameters:

key - key

Returns:

value; can be null

Throws:

IllegalArgumentException - if key is null

get

@Nullable
<T> T get(Object key,
                    Class<T> type)

Get the value associated to the key and cast to the type.

Type Parameters:

T - value type

Parameters:

key - key

type - value type to cast

Returns:

value; can be null

Throws:

IllegalArgumentException - if key is null

IllegalArgumentException - if type is null

getOrDefault

<T> T getOrDefault(Object key,
                   T defaultValue)

Get the value associated to the key; otherwise returns specified value.

Type Parameters:

T - value type

Parameters:

key - key

defaultValue - default value

Returns:

value

Throws:

IllegalArgumentException - if key is null

put

void put(Object key,
         Object value)

Store a value associating the provided key.

Parameters:

key - key

value - value

Throws:

IllegalArgumentException - if key is null

IllegalArgumentException - if value is null

putAll

void putAll(Map<Object,Object> map)

Store all key value pairs from provided map.

Parameters:

map - map

Throws:

IllegalArgumentException - if map is null

remove

@Nullable
Object remove(Object key)

Remove the value associated to the provided key.

Parameters:

key - key

Returns:

previously associated value or null if key did not exist

Throws:

IllegalArgumentException - if key is null