Class OptionalAttributeConverter<T>
java.lang.Object
software.amazon.awssdk.enhanced.dynamodb.internal.converter.attribute.OptionalAttributeConverter<T>
- All Implemented Interfaces:
AttributeConverter<Optional<T>>
@ThreadSafe
@Immutable
public class OptionalAttributeConverter<T>
extends Object
implements AttributeConverter<Optional<T>>
A converter between
Optional
and EnhancedAttributeValue
.-
Method Summary
Modifier and TypeMethodDescriptionTheAttributeValueType
that a converter stores and reads values from DynamoDB via theAttributeValue
class.static OptionalAttributeConverter
create
(AttributeConverter delegate) transformFrom
(Optional<T> input) Convert the provided Java object into anAttributeValue
.transformTo
(AttributeValue input) Convert the providedAttributeValue
into a Java object.type()
The type supported by this converter.
-
Method Details
-
create
-
type
Description copied from interface:AttributeConverter
The type supported by this converter.- Specified by:
type
in interfaceAttributeConverter<T>
-
attributeValueType
Description copied from interface:AttributeConverter
TheAttributeValueType
that a converter stores and reads values from DynamoDB via theAttributeValue
class.- Specified by:
attributeValueType
in interfaceAttributeConverter<T>
-
transformFrom
Description copied from interface:AttributeConverter
Convert the provided Java object into anAttributeValue
. This will raise aRuntimeException
if the conversion fails, or the input is null.Example:
InstantAsStringAttributeConverter converter = InstantAsStringAttributeConverter.create(); assertEquals(converter.transformFrom(Instant.EPOCH), EnhancedAttributeValue.fromString("1970-01-01T00:00:00Z").toAttributeValue());
- Specified by:
transformFrom
in interfaceAttributeConverter<T>
-
transformTo
Description copied from interface:AttributeConverter
Convert the providedAttributeValue
into a Java object. This will raise aRuntimeException
if the conversion fails, or the input is null.Example:
InstantAsStringAttributeConverter converter = InstantAsStringAttributeConverter.create(); assertEquals(converter.transformTo(EnhancedAttributeValue.fromString("1970-01-01T00:00:00Z").toAttributeValue()), Instant.EPOCH);
- Specified by:
transformTo
in interfaceAttributeConverter<T>
-