cn.crane4j.core.support

接口 DataProvider<K,V>

类型参数:

K - key type

V - value type

所有超级接口:

Function<Collection<K>,Map<K,V>>

函数接口:

这是一个函数接口, 因此可用作 lambda 表达式或方法引用的赋值目标。

@FunctionalInterface
public interface DataProvider<K,V>
extends Function<Collection<K>,Map<K,V>>

Enter a batch of keys and return the associated values grouped by key.

作者:

huangchengxing

方法概要

限定符和类型	方法和说明
static <K,V> DataProvider<K,V>	empty() Get an empty provider that always return Collections.emptyMap() when call Function.apply(T).
static <K,V> DataProvider<K,V>	fixed(Map<K,V> data) Get a provider that always return data when call Function.apply(T).

从接口继承的方法 java.util.function.Function

andThen, apply, compose, identity

方法详细资料

empty

static <K,V> DataProvider<K,V> empty()

Get an empty provider that always return Collections.emptyMap() when call Function.apply(T).

类型参数:

K - key type

V - value type

返回:

data provider

fixed

static <K,V> DataProvider<K,V> fixed(Map<K,V> data)

Get a provider that always return data when call Function.apply(T).

类型参数:

K - key type

V - value type

参数:

data - data to return

返回:

data provider