com.hazelcast.function

Class Functions

java.lang.Object

com.hazelcast.function.Functions

public final class Functions
extends Object

Factory methods for several common functions.

Since:

4.0

Method Summary

Modifier and Type	Method and Description
static <K> FunctionEx<Map.Entry<K,?>,K>	entryKey() Returns a function that extracts the key of a Map.Entry.
static <V> FunctionEx<Map.Entry<?,V>,V>	entryValue() Returns a function that extracts the value of a Map.Entry.
static <T> FunctionEx<T,T>	wholeItem() Synonym for FunctionEx.identity(), to be used as a projection function (e.g., key extractor).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

wholeItem

@Nonnull
public static <T> FunctionEx<T,T> wholeItem()

Synonym for FunctionEx.identity(), to be used as a projection function (e.g., key extractor).

Type Parameters:

T - the type of the input and output objects to the function

entryKey

@Nonnull
public static <K> FunctionEx<Map.Entry<K,?>,K> entryKey()

Returns a function that extracts the key of a Map.Entry.

Type Parameters:

K - type of entry's key

entryValue

@Nonnull
public static <V> FunctionEx<Map.Entry<?,V>,V> entryValue()

Returns a function that extracts the value of a Map.Entry.

Type Parameters:

V - type of entry's value