org.junit.platform.engine.support.store

Class NamespacedHierarchicalStore.MemoizingSupplier

java.lang.Object

org.junit.platform.engine.support.store.NamespacedHierarchicalStore.MemoizingSupplier

All Implemented Interfaces:

java.util.function.Supplier<java.lang.Object>

Enclosing class:

NamespacedHierarchicalStore<N>

private static class NamespacedHierarchicalStore.MemoizingSupplier
extends java.lang.Object
implements java.util.function.Supplier<java.lang.Object>

Thread-safe Supplier that memoizes the result of calling its delegate and ensures it is called at most once.

If the delegate throws an exception, it is stored and rethrown every time get() is called.

See Also:

NamespacedHierarchicalStore.StoredValue

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	NamespacedHierarchicalStore.MemoizingSupplier.Failure

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.function.Supplier<java.lang.Object>	delegate
private static java.lang.Object	NO_VALUE_SET
private java.lang.Object	value

Constructor Summary

Constructors

Modifier	Constructor and Description
private	MemoizingSupplier(java.util.function.Supplier<java.lang.Object> delegate)

Method Summary

Modifier and Type	Method and Description
private void	computeValue()
java.lang.Object	get()

Methods inherited from class java.lang.Object

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

Field Detail

NO_VALUE_SET

private static final java.lang.Object NO_VALUE_SET

delegate

private final java.util.function.Supplier<java.lang.Object> delegate

value

private volatile java.lang.Object value

Constructor Detail

MemoizingSupplier

private MemoizingSupplier(java.util.function.Supplier<java.lang.Object> delegate)

Method Detail

get

public java.lang.Object get()

Specified by:

get in interface java.util.function.Supplier<java.lang.Object>

computeValue

private void computeValue()