Package software.amazon.awssdk.core.traits

Class DefaultValueTrait

java.lang.Object

software.amazon.awssdk.core.traits.DefaultValueTrait

All Implemented Interfaces:

Trait

public final class DefaultValueTrait
extends Object
implements Trait

Trait that supplies a default value when none is present for a given field.

Method Summary

Modifier and Type	Method	Description
static DefaultValueTrait	create(Supplier<?> supplier)	Creates a new DefaultValueTrait with a custom Supplier.
static DefaultValueTrait	idempotencyToken()	Creates a precanned DefaultValueTrait using the idempotency token generation which creates a new UUID if a field is null.
Object	resolveValue(Object val)	If the value is null then the default value supplier is used to get a default value for the field.

Methods inherited from class java.lang.Object

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

Method Details

resolveValue

public Object resolveValue(Object val)

If the value is null then the default value supplier is used to get a default value for the field. Otherwise 'val' is returned.

Parameters:

val - Value to resolve.

Returns:

Resolved value.

create

public static DefaultValueTrait create(Supplier<?> supplier)

Creates a new DefaultValueTrait with a custom Supplier.

Parameters:

supplier - Supplier of default value for the field.

Returns:

New trait instance.

idempotencyToken

public static DefaultValueTrait idempotencyToken()

Creates a precanned DefaultValueTrait using the idempotency token generation which creates a new UUID if a field is null. This is used when the 'idempotencyToken' trait in the service model is present.

Returns:

New trait instance.