@DynamoDBDocument not working for a Map<Object, Object>

[namral]

I tried to use @DynamoDBDocument to serialize a POJO that looks like this :

`
@DynamoDBDocument
public class Metadata {
Map<Object, Object> metadata;

    public Metadata() {
    }

    public Metadata(Map<Object, Object> metadata) {
        this.metadata = metadata;
    }

    @DynamoDBAttribute
    public Map<Object, Object> getMetadata() {
        return stateMetadata;
    }

    public void setMetadata(Map<Object, Object> metadata) {
        this.metadata = metadata;
    }
}

@DynamoDBTable(tableName = "REPLACED_BY_CONFIG")
public class ProductItem {
private Metadata metadata;

     @DynamoDBAttribute
     public Metadata getMetadata() {
           return metadata;
     }

}
`

http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DynamoDBMapper.Annotations.html#DynamoDBMapper.Annotations.DynamoDBDocument

It throws the following exception :
Caused by: com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMappingException: not supported; requires @DynamoDBTyped or @DynamoDBTypeConverted

I was able to get this to work by adding the following annotation to the getter method in ProductItem
@DynamoDBTypeConverted(converter = MetadataTypeConverter.class)

I was wondering why I see this behavior ?

[kiiadi]

At present the DynamoDB Mapper has not been fully ported to the v2 code-base. We do have a tracking issue for this: #35

[namral]

Good to know. I mistakenly opened it under the v2 version. It was mean't for v1

[biniama]

@DynamoDBTypeConverted(converter = MetadataTypeConverter.class)

Is MetadataTypeConverter.class your custom implementation?