Package ru.progrm_jarvis.javacommons.lazy

Class Lazy.DoubleCheckedLazy<T>

java.lang.Object

ru.progrm_jarvis.javacommons.lazy.Lazy.DoubleCheckedLazy<T>

Type Parameters:

T - type of wrapped value

All Implemented Interfaces:

Supplier<T>, Lazy<T>

Enclosing interface:

Lazy<T>

public static final class Lazy.DoubleCheckedLazy<T>
extends Object
implements Lazy<T>

Thread-safe (using double-checked locking) lazy getting its value from the specified value supplier.

Nested Class Summary

Nested classes/interfaces inherited from interface ru.progrm_jarvis.javacommons.lazy.Lazy

Lazy.DoubleCheckedLazy<T>, Lazy.LockingWeakLazy<T>, Lazy.SimpleLazy<T>, Lazy.SimpleWeakLazy<T>, Lazy.ThreadLocalLazy<T>

Method Summary

Modifier and Type	Method	Description
T	get()	Gets the wrapped value initializing it once requested.
@NotNull Result<T,Void>	getAsResult()	Gets the wrapped value wrapped in Result if it is already initialized or a Result.nullError() otherwise.
T	getInitializedOrNull()	Gets the wrapped value if it is already initialized or null otherwise.
boolean	isInitialized()	Tests if the value of this lazy was initialized.

Methods inherited from class java.lang.Object

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

Methods inherited from interface ru.progrm_jarvis.javacommons.lazy.Lazy

getAsOptional

Method Details

get

public T get()

Description copied from interface: Lazy

Gets the wrapped value initializing it once requested.

Specified by:

get in interface Lazy<T>

Specified by:

get in interface Supplier<T>

Returns:

wrapped value

isInitialized

public boolean isInitialized()

Description copied from interface: Lazy

Tests if the value of this lazy was initialized.

Specified by:

isInitialized in interface Lazy<T>

Returns:

true if this lazy's value was initialize and false otherwise

getInitializedOrNull

@Nullable
public T getInitializedOrNull()

Description copied from interface: Lazy

Gets the wrapped value if it is already initialized or null otherwise.

Specified by:

getInitializedOrNull in interface Lazy<T>

Returns:

wrapped value if it is already initialized or null otherwise

See Also:

• analog wraping into Optional

getAsResult

@NotNull
public @NotNull Result<T,Void> getAsResult()

Description copied from interface: Lazy

Gets the wrapped value wrapped in Result if it is already initialized or a Result.nullError() otherwise.

Specified by:

getAsResult in interface Lazy<T>

Returns:

wrapped value wrapped in Result if it is already initialized or Result.nullError() otherwise