I’m using the AWS Java SDK v2 with UpdateExpression so that I can update an item without having to retrieve the item from DynamoDB.

I’ve managed to build the update expression but now I don’t know how to action it.

DynamoDbEnhancedClient client = DynamoDbEnhancedClient.builder()
                        .dynamoDbClient(DynamoDbClient.builder().region(Region.EU_WEST_1).build())
                        .extensions(AutoGeneratedUuidExtension.create())
                        .build();

DynamoDbTable<MyClass> table = client.table("MyTable", TableSchema.fromBean(MyClass.clazz));

SetAction action = SetAction.builder()
                        .path("#optIn")
                        .value("if_not_exists(#optIn,:optInValue)")
                        .putExpressionValue(":optInValue", fromBool(true))
                        .build();

UpdateExpression updateExpression = UpdateExpression.builder()
                        .addAction(action)
                        .build();

// Now I don't know how to call table.execute(updateExpression, uniqueId);