Package org.apache.juneau.commons.function

Class Suppliers

java.lang.Object

org.apache.juneau.commons.function.Suppliers

public class Suppliers
extends Object

Supplier factories: memoizing wrappers moved from the former Utils.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Suppliers()	Constructor — this class is meant to be subclassed.

Method Summary

Modifier and Type	Method	Description
static <T> NullableSupplier<T>	memoize(Supplier<T> supplier)	Thread-safe memoizing supplier (computes once, caches).
static <T> Memoizer<T>	memoizer(Supplier<T> supplier)	Resettable memoizing supplier.

Methods inherited from class java.lang.Object

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

Constructor Details

Suppliers

protected Suppliers()

Constructor — this class is meant to be subclassed.

Method Details

memoize

public static <T> NullableSupplier<T> memoize(Supplier<T> supplier)

Thread-safe memoizing supplier (computes once, caches).

Type Parameters:

T - The type of value supplied.

Parameters:

supplier - The underlying supplier to memoize. Must not be null.

Returns:

A new memoizing supplier.

memoizer

public static <T> Memoizer<T> memoizer(Supplier<T> supplier)

Resettable memoizing supplier.

Type Parameters:

T - The type of value supplied.

Parameters:

supplier - The underlying supplier to memoize. Must not be null.

Returns:

A new resettable memoizing supplier.