Is validation with JSR380 (or Spring validation) supported?

[frankkoornstra]

I can't seem to find any examples or docs about this but it seems elementary so I'm probably missing something 😅

I have, for example, the following setup:

@Component
class MyAwesomeMutation : Mutation {
    fun myAwesomeMutation(widget: Widget) = widget
}

@Validated
data class Widget(@get:Min(3) val id: Int)

(also tried it with @field:Min(3))

When I make a request for this mutation, it doesn't matter what I put in for the id, it will always be fine (as long as it's an int of course). Do I need to hook up something from Spring to validate the request?

I'm not tied to JSR380 perse, it just seemed like an obvious choice but if a Spring validation component works just as well, that's fine too. I just need validation to happen 😄

[frankkoornstra]

Solved! Turned out I needed to shift the annotations around a bit. This is the working solution:

@Component
@Validated
class MyAwesomeMutation : Mutation {
    fun myAwesomeMutation(@Valid widget: Widget) = widget
}

data class Widget(@get:Min(3) val id: Int)

[dariuszkuc]

FYI if you are using SpringBoot 2.3.x+ web starters no longer bring in the validation starter as a dependency - you will have to add it explicitly, e.g. in Gradle add following dependency

implementation("org.springframework.boot", "spring-boot-starter-validation", springBootVersion)