Class InstantAsStringAttributeConverter
- java.lang.Object
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- software.amazon.awssdk.enhanced.dynamodb.internal.converter.attribute.InstantAsStringAttributeConverter
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- All Implemented Interfaces:
AttributeConverter<Instant>
@ThreadSafe @Immutable public final class InstantAsStringAttributeConverter extends Object implements AttributeConverter<Instant>
A converter betweenInstant
andAttributeValue
.This stores values in DynamoDB as a string.
Values are stored in ISO-8601 format, with nanosecond precision and a time zone of UTC.
Examples:
Instant.EPOCH.plusSeconds(1)
is stored as an AttributeValue with the String "1970-01-01T00:00:01Z"Instant.EPOCH.minusSeconds(1)
is stored as an AttributeValue with the String "1969-12-31T23:59:59Z"Instant.EPOCH.plusMillis(1)
is stored as an AttributeValue with the String "1970-01-01T00:00:00.001Z"Instant.EPOCH.minusMillis(1)
is stored as an AttributeValue with the String "1969-12-31T23:59:59.999Z"Instant.EPOCH.plusNanos(1)
is stored as an AttributeValue with the String "1970-01-01T00:00:00.000000001Z"Instant.EPOCH.minusNanos(1)
is stored as an AttributeValue with the String "1969-12-31T23:59:59.999999999Z"
Instant
for more details on the serialization format.This converter can read any values written by itself, or values with zero offset written by
OffsetDateTimeAsStringAttributeConverter
, and values with zero offset and without time zone named written byZoneOffsetAttributeConverter
. Offset and zoned times will be automatically converted to the equivalentInstant
.This serialization is lexicographically orderable when the year is not negative.
This can be created via
create()
.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description AttributeValueType
attributeValueType()
TheAttributeValueType
that a converter stores and reads values from DynamoDB via theAttributeValue
class.static InstantAsStringAttributeConverter
create()
AttributeValue
transformFrom(Instant input)
Convert the provided Java object into anAttributeValue
.Instant
transformTo(AttributeValue input)
Convert the providedAttributeValue
into a Java object.EnhancedType<Instant>
type()
The type supported by this converter.
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Method Detail
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create
public static InstantAsStringAttributeConverter create()
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type
public EnhancedType<Instant> type()
Description copied from interface:AttributeConverter
The type supported by this converter.- Specified by:
type
in interfaceAttributeConverter<Instant>
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attributeValueType
public AttributeValueType attributeValueType()
Description copied from interface:AttributeConverter
TheAttributeValueType
that a converter stores and reads values from DynamoDB via theAttributeValue
class.- Specified by:
attributeValueType
in interfaceAttributeConverter<Instant>
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transformFrom
public AttributeValue transformFrom(Instant input)
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<Instant>
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transformTo
public Instant transformTo(AttributeValue input)
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<Instant>
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