ID field needs to be nullable, at least on Input

[stevedefazio]

(Also posted on StackOverflow: https://stackoverflow.com/questions/68957980/how-to-handle-identity-fields-in-graphql-spqr)

I have a field as follows:

@id @GeneratedValue(strategy=GenerationType.IDENTITY)
@JsonProperty
@column(name="trade_id")
int tradeId;

Somehow, SPQR is concluding that this field should not Not Null, even though I am not explicitly declaring it as such.

input TradeInput {
tradeId: Int!

The trouble is, when I create a Trade object, the tradeID value is going to be generated by the database. So I never want to pass one in. However, I don't want to ignore the field entirely, because when I'm retrieving Trade objects, I want to include the ID.

Is there a way to do this? I'm using graphql-spqr-spring-boot-starter v 0.0.4

[kaqqao]

Answered on StackOveflow. Copying here for posterity:

An int simply can not be null. But you have a few options:

• Turn it into an ID scalar type (using @GraphQLId) instead of an Int
• Give it a default value via @GraphQLInputField
• Use Integer instead of int, as Integer is nullable

Btw, it's highly advised to upgrade to the latest version of the starter.