org.springframework.data.relational.core.mapping.event

Interface Identifier

All Known Subinterfaces:

Identifier.Specified

public interface Identifier

Wrapper for an identifier of an entity. Might either be a Identifier.Specified or Unset.UNSET

Author:

Jens Schauder

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	Identifier.Specified A specified identifier that exposes a definitely present identifier value.

Method Summary

Modifier and Type	Method and Description
Optional<?>	getOptionalValue() Returns the identifier value.
static Identifier.Specified	of(Object identifier) Creates a new Identifier.Specified identifier for the given, non-null value.
static Identifier	ofNullable(Object identifier) Produces an Identifier of appropriate type depending the argument being null or not.

Method Detail

of

static Identifier.Specified of(Object identifier)

Creates a new Identifier.Specified identifier for the given, non-null value.

Parameters:

identifier - must not be null.

Returns:

will never be null.

ofNullable

static Identifier ofNullable(@Nullable
                             Object identifier)

Produces an Identifier of appropriate type depending the argument being null or not.

Parameters:

identifier - May be null.

Returns:

an Identifier.

getOptionalValue

Optional<?> getOptionalValue()

Returns the identifier value.

Returns:

will never be null.