software.amazon.awssdk.enhanced.dynamodb.internal.converter.attribute

Class ByteBufferAttributeConverter

java.lang.Object

software.amazon.awssdk.enhanced.dynamodb.internal.converter.attribute.ByteBufferAttributeConverter

All Implemented Interfaces:

AttributeConverter<ByteBuffer>

@ThreadSafe
 @Immutable
public final class ByteBufferAttributeConverter
extends Object
implements AttributeConverter<ByteBuffer>

A converter between ByteBuffer and AttributeValue.

This stores values in DynamoDB as a binary blob.

This supports reading every byte value supported by DynamoDB, making it fully compatible with custom converters as well as internal converters (e.g. SdkBytesAttributeConverter).

This can be created via create().

Method Summary

Modifier and Type	Method and Description
AttributeValueType	attributeValueType() The AttributeValueType that a converter stores and reads values from DynamoDB via the AttributeValue class.
static ByteBufferAttributeConverter	create()
AttributeValue	transformFrom(ByteBuffer input) Convert the provided Java object into an AttributeValue.
ByteBuffer	transformTo(AttributeValue input) Convert the provided AttributeValue into a Java object.
EnhancedType<ByteBuffer>	type() The type supported by this converter.

Methods inherited from class java.lang.Object

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

Method Detail

create

public static ByteBufferAttributeConverter create()

type

public EnhancedType<ByteBuffer> type()

Description copied from interface: AttributeConverter

The type supported by this converter.

Specified by:

type in interface AttributeConverter<ByteBuffer>

attributeValueType

public AttributeValueType attributeValueType()

Description copied from interface: AttributeConverter

The AttributeValueType that a converter stores and reads values from DynamoDB via the AttributeValue class.

Specified by:

attributeValueType in interface AttributeConverter<ByteBuffer>

transformFrom

public AttributeValue transformFrom(ByteBuffer input)

Description copied from interface: AttributeConverter

Convert the provided Java object into an AttributeValue. 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());
 
 

Specified by:

transformFrom in interface AttributeConverter<ByteBuffer>

transformTo

public ByteBuffer transformTo(AttributeValue input)

Description copied from interface: AttributeConverter

Convert the provided AttributeValue 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);
 
 

Specified by:

transformTo in interface AttributeConverter<ByteBuffer>