public class EnumAttributeConverter<T extends Enum<T>> extends Object implements AttributeConverter<T>
Enum and AttributeValue.
This stores values in DynamoDB as a string.
This can be created via create(Class).
| Modifier and Type | Method and Description |
|---|---|
AttributeValueType |
attributeValueType()
The
AttributeValueType that a converter stores and reads values
from DynamoDB via the AttributeValue class. |
static <T extends Enum<T>> |
create(Class<T> enumClass) |
AttributeValue |
transformFrom(T input)
Convert the provided Java object into an
AttributeValue. |
T |
transformTo(AttributeValue input)
Convert the provided
AttributeValue into a Java object. |
EnhancedType<T> |
type()
The type supported by this converter.
|
public static <T extends Enum<T>> EnumAttributeConverter<T> create(Class<T> enumClass)
public AttributeValue transformFrom(T input)
AttributeConverterAttributeValue. This will raise a RuntimeException 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());
transformFrom in interface AttributeConverter<T extends Enum<T>>public T transformTo(AttributeValue input)
AttributeConverterAttributeValue into a Java object. This will raise a RuntimeException 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);
transformTo in interface AttributeConverter<T extends Enum<T>>public EnhancedType<T> type()
AttributeConvertertype in interface AttributeConverter<T extends Enum<T>>public AttributeValueType attributeValueType()
AttributeConverterAttributeValueType that a converter stores and reads values
from DynamoDB via the AttributeValue class.attributeValueType in interface AttributeConverter<T extends Enum<T>>Copyright © 2020. All rights reserved.