Uses of Interface
org.apache.juneau.commons.function.NullableSupplier

Packages that use NullableSupplier

Package	Description
org.apache.juneau.commons.function	Functional programming utilities including enhanced function interfaces, consumers, suppliers, tuples, exception-handling variants, and large-dataset streaming APIs.
org.apache.juneau.commons.settings	Thread-safe system property access with support for global and per-thread overrides, making it useful for unit tests and configuration management.

Uses of NullableSupplier in org.apache.juneau.commons.function

Classes in org.apache.juneau.commons.function that implement NullableSupplier

Modifier and Type	Class	Description
class	Memoizer<T>	A thread-safe supplier that caches the result of the first call and supports resetting the cache.

Methods in org.apache.juneau.commons.function that return NullableSupplier

Modifier and Type	Method	Description
static <T> NullableSupplier<T>	NullableSupplier.empty()	Creates an empty NullableSupplier that always returns null.
default NullableSupplier<T>	NullableSupplier.filter(Predicate<? super T> predicate)	If a value is present, and the value matches the given predicate, returns a NullableSupplier describing the value, otherwise returns an empty NullableSupplier.
default <U> NullableSupplier<U>	NullableSupplier.flatMap(Function<? super T,? extends NullableSupplier<? extends U>> mapper)	If a value is present, returns the result of applying the given NullableSupplier-bearing mapping function to the value, otherwise returns an empty NullableSupplier.
default <U> NullableSupplier<U>	NullableSupplier.map(Function<? super T,? extends U> mapper)	If a value is present, applies the provided mapping function to it and returns a NullableSupplier describing the result.
static <T> NullableSupplier<T>	Suppliers.memoize(Supplier<T> supplier)	Thread-safe memoizing supplier (computes once, caches).
static <T> NullableSupplier<T>	NullableSupplier.of(Supplier<T> supplier)	Creates a NullableSupplier from a Supplier.
static <T> NullableSupplier<T>	NullableSupplier.ofNullable(T value)	Creates a NullableSupplier that always returns the specified value.

Method parameters in org.apache.juneau.commons.function with type arguments of type NullableSupplier

Modifier and Type	Method	Description
default <U> NullableSupplier<U>	NullableSupplier.flatMap(Function<? super T,? extends NullableSupplier<? extends U>> mapper)	If a value is present, returns the result of applying the given NullableSupplier-bearing mapping function to the value, otherwise returns an empty NullableSupplier.

Uses of NullableSupplier in org.apache.juneau.commons.settings

Classes in org.apache.juneau.commons.settings that implement NullableSupplier

Modifier and Type	Class	Description
class	Setting<T>	A memoizer that provides convenience methods for type conversion.
class	StringSetting	A specialized Setting for string values that provides convenience methods for type conversion.

Methods in org.apache.juneau.commons.settings with parameters of type NullableSupplier

Modifier and Type	Method	Description
Settings.Builder	Settings.Builder.globalStore(NullableSupplier<PropertyStore> supplier)	Sets the supplier for the global store.
Settings.Builder	Settings.Builder.localStore(NullableSupplier<PropertyStore> supplier)	Sets the supplier for the local (per-thread) store.