com.opensymphony.xwork2.util

Class LazyRef<T>

java.lang.Object

com.opensymphony.xwork2.util.LazyRef<T>

Type Parameters:

T - the type of the lazily computed value

All Implemented Interfaces:

Supplier<T>

public class LazyRef<T>
extends Object
implements Supplier<T>

A thread-safe lazy reference that computes its value on first access using double-checked locking. The cached value can be invalidated via reset(), causing the next get() call to recompute the value.

Since:

6.9.0

Constructor Summary

Constructors

Constructor and Description
LazyRef(Supplier<T> factory) Creates a new LazyRef with the given factory supplier.

Method Summary

Modifier and Type	Method and Description
T	get() Returns the cached value, computing it on first access or after a reset().
void	reset() Invalidates the cached value so the next get() call recomputes it.

Methods inherited from class java.lang.Object

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

Constructor Detail

LazyRef

public LazyRef(Supplier<T> factory)

Creates a new LazyRef with the given factory supplier.

Parameters:

factory - the supplier used to compute the value; must not be null

Method Detail

get

public T get()

Returns the cached value, computing it on first access or after a reset().

Specified by:

get in interface Supplier<T>

Returns:

the computed value

reset

public void reset()

Invalidates the cached value so the next get() call recomputes it.