software.amazon.awssdk.enhanced.dynamodb.mapper

Class Attribute<T>

java.lang.Object

software.amazon.awssdk.enhanced.dynamodb.mapper.Attribute<T>

public final class Attribute<T>
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Attribute.AttributeSupplier<T>

Method Summary

Modifier and Type	Method and Description
static <T,R> Attribute.AttributeSupplier<T>	create(String attributeName, Function<T,R> getAttributeMethod, BiConsumer<T,R> updateItemMethod, AttributeType<R> attributeType)
<R> Attribute<R>	transform(Function<R,T> transform, Consumer<R> createComponent) Return a transformed copy of this attribute that knows how to get/set from a different type of object given a function that can convert the containing object itself.

Methods inherited from class java.lang.Object

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

Method Detail

create

public static <T,R> Attribute.AttributeSupplier<T> create(String attributeName,
                                                          Function<T,R> getAttributeMethod,
                                                          BiConsumer<T,R> updateItemMethod,
                                                          AttributeType<R> attributeType)

transform

public <R> Attribute<R> transform(Function<R,T> transform,
                                  Consumer<R> createComponent)

Return a transformed copy of this attribute that knows how to get/set from a different type of object given a function that can convert the containing object itself. It does this by modifying the get/set functions of type T to type R given a transformation function F(T) = R.

Type Parameters:

R - The type being transformed to.

Parameters:

transform - A function that converts the object storing the attribute from the source type to the destination type.

createComponent - A consumer to create a new instance of the component object when required. A null value will bypass this logic.

Returns:

A new Attribute that be contained by an object of type R.