org.osgi.util.function

Interface Supplier<T>

Type Parameters:

T - The type of the function output.

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@ConsumerType
 @FunctionalInterface
public interface Supplier<T>

A function that produces a result.

This is a functional interface and can be used as the assignment target for a lambda expression or method reference.

"ThreadSafe"

Method Summary

Modifier and Type	Method and Description
static <T> Supplier<T>	asJavaSupplier(Supplier<T> wrapped) Returns a java.util.function.Supplier which wraps the specified Supplier and throws any thrown exceptions.
static <T> Supplier<T>	asJavaSupplierOrElse(Supplier<T> wrapped, T orElse) Returns a java.util.function.Supplier which wraps the specified Supplier and the specified value.
static <T> Supplier<T>	asJavaSupplierOrElseGet(Supplier<T> wrapped, Supplier<? extends T> orElseGet) Returns a java.util.function.Supplier which wraps the specified Supplier and the specified java.util.function.Supplier.
static <T> Supplier<T>	asSupplier(Supplier<T> wrapped) Returns a Supplier which wraps the specified java.util.function.Supplier.
T	get() Returns a value.

Method Detail

get

T get()
throws Exception

Returns a value.

Returns:

The output of this function.

Throws:

Exception - An exception thrown by the method.

asJavaSupplier

static <T> Supplier<T> asJavaSupplier(Supplier<T> wrapped)

Returns a java.util.function.Supplier which wraps the specified Supplier and throws any thrown exceptions.

The returned java.util.function.Supplier will throw any exception thrown by the wrapped Supplier.

Type Parameters:

T - The type of the function output.

Parameters:

wrapped - The Supplier to wrap. Must not be null.

Returns:

A java.util.function.Supplier which wraps the specified Supplier.

asJavaSupplierOrElse

static <T> Supplier<T> asJavaSupplierOrElse(Supplier<T> wrapped,
                                            T orElse)

Returns a java.util.function.Supplier which wraps the specified Supplier and the specified value.

If the the specified Supplier throws an Exception, the the specified value is returned.

Type Parameters:

T - The type of the function output.

Parameters:

wrapped - The Supplier to wrap. Must not be null.

orElse - The value to return if the specified Supplier throws an Exception.

Returns:

A java.util.function.Supplier which wraps the specified Supplier and the specified value.

asJavaSupplierOrElseGet

static <T> Supplier<T> asJavaSupplierOrElseGet(Supplier<T> wrapped,
                                               Supplier<? extends T> orElseGet)

Returns a java.util.function.Supplier which wraps the specified Supplier and the specified java.util.function.Supplier.

If the the specified Supplier throws an Exception, the value returned by the specified java.util.function.Supplier is returned.

Type Parameters:

T - The type of the function output.

Parameters:

wrapped - The Supplier to wrap. Must not be null.

orElseGet - The java.util.function.Supplier to call for a return value if the specified Supplier throws an Exception.

Returns:

A java.util.function.Supplier which wraps the specified Supplier and the specified java.util.function.Supplier.

asSupplier

static <T> Supplier<T> asSupplier(Supplier<T> wrapped)

Returns a Supplier which wraps the specified java.util.function.Supplier.

Type Parameters:

T - The type of the function output.

Parameters:

wrapped - The java.util.function.Supplier to wrap. Must not be null.

Returns:

A Supplier which wraps the specified java.util.Supplier.Function.