Convert DynamoJson to something compatible with the Dynamo client

Asked Feb 10 '21 at 12:25

Active Feb 10 '21 at 15:20

Viewed 831 times

I've got a big dump of DynamoJson e.g.

{"Item": {"id":{"N":"896"},  "name": {"S": "Tom"}}}

I want to parse this JSON and put it to my DynamoDB table...

I've tried:

import com.amazonaws.services.dynamodbv2.document.Item;
Item item = Item.fromJSON(BLOB);

But unfortunately its not smart enough to parse the DynamoDB Json format and doesn't deal with the inner types (S, N etc)... When I try to put I get errors like:

Type mismatch for key id expected: N actual: M

Related Questions:

AWS DynamoDB on Android: Inserting JSON Directly? This does not work for the DynamoJson format.

Unmarshall DynamoDB JSON This is exactly what I need but its in NodeJS

edited Feb 10 '21 at 15:20

oguz ismail

asked Feb 10 '21 at 12:25

mickzer

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https://stackoverflow.com/questions/43812278/converting-dynamodb-json-to-standard-json-with-java – JCompetence Feb 10 '21 at 12:45
I'd rather not use a custom converter from a robustness perspective. – mickzer Feb 10 '21 at 12:49
What about the ItemUtils answer. – JCompetence Feb 10 '21 at 12:52
Doesn't work... ItemUtils.toItem takes in an Map ... You first need a way to you convert the above DynamoDB Json to a Map... The answer in question constructs one by hand. – mickzer Feb 10 '21 at 12:59
Are you using the AWS Java SDK V1? What version? 1.11.952? – Jameson Feb 11 '21 at 20:49

Convert DynamoJson to something compatible with the Dynamo client

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