Validate a json field based on another field dynamically

Question

I started to use validation framework @Valid to validate json request with jax-rs

Is it possible to validate a field against another field?

So this is how I wanna construct the request body:

@JsonProperty
private Integer peopleCount

@JsonProperty
@Min(value = 0)
@Max( value = peopleCount)
private Integer personId;

So when I pass

{
     "peopleCount":2,
     "personId": 4
}

it should throw an error

but @Max( value = peopleCount) does not work since it requires a constant value

please note that I'm trying to validate against the json request itself and not the values saved in DB

Thanks in advance

Answer 1

You can use custom constraint like class level constraint for cross field validation.