io.r2dbc.spi

Interface Wrapped<T>

Type Parameters:

T - The R2DBC SPI type being wrapped

public interface Wrapped<T>

Indicates that an instance wraps a concrete implementation of an R2DBC SPI interface. A wrapper is expected to implement this interface so that callers can extract the original instance.

Method Summary

Modifier and Type	Method and Description
T	unwrap() Returns the original instance wrapped by this object.
default <E> E	unwrap(Class<E> targetClass) Recursively unwrap() the object and returns the first instance that matches to the given Class or null if none matches.

Method Detail

unwrap

T unwrap()

Returns the original instance wrapped by this object.

Returns:

the original instance wrapped by this object

unwrap

@Nullable
default <E> E unwrap(Class<E> targetClass)

Recursively unwrap() the object and returns the first instance that matches to the given Class or null if none matches.

If this object is an instance of the given Class, this object is returned.

Type Parameters:

E - returning type

Parameters:

targetClass - target type to unwrap

Returns:

unwrapped instance of given type or null

Throws:

IllegalArgumentException - if targetClass is null

Since:

0.9.0