DefaultValueTrait (AWS Java SDK :: SDK Core 2.23.20 API)

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

All Methods Static Methods Instance Methods Concrete Methods
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
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - 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.