de.larssh.utils

Class Finals.CachingSupplier<T>

java.lang.Object

de.larssh.utils.Finals.CachingSupplier<T>

Type Parameters:

T - return type

All Implemented Interfaces:

Supplier<T>

Enclosing class:

Finals

public static class Finals.CachingSupplier<T>
extends Object
implements Supplier<T>

Supplier implementation proxying another supplier while calculating its return value at most one time.

Threads are synchronized upon calling the wrapped supplier.

Constructor Summary

Constructors

Constructor and Description
CachingSupplier(Supplier<T> supplier) Creates a new CachingSupplier instance.

Method Summary

Modifier and Type	Method and Description
T	get()
boolean	isCalculated() Determines if a cached value has been calculated already.

Methods inherited from class java.lang.Object

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

Constructor Detail

CachingSupplier

public CachingSupplier(Supplier<T> supplier)

Creates a new CachingSupplier instance.

Parameters:

supplier - Wrapped supplier

Method Detail

isCalculated

public boolean isCalculated()

Determines if a cached value has been calculated already.

Returns:

true if a cached value has been calculated already, else false

get

public T get()

Specified by:

get in interface Supplier<T>