kotlinlang #spring

@SpringBootApplication class DemoApplication fun main(args: Array<String>) { SpringApplication.run(DemoApplication::class.java, *args) } @Entity data class Person( @Id @GeneratedValue(strategy = GenerationType.IDENTITY) var id: Long? = null, var name: String = "" ) @Repository interface PersonRepository: JpaRepository<Person, Long>

Marcelus Trojahn

01/24/2018, 5:21 PM

and let spring do the rest... no problems

Marcelus Trojahn

01/24/2018, 5:24 PM

even better: class DemoApplication { @Bean fun doSomething(personRepository: PersonRepository) = CommandLineRunner { println(personRepository.findAll()) personRepository.save(Person(name= "Bart Simpson")) println(personRepository.findAll()) } }

fabricio

01/24/2018, 5:33 PM

@sdeleuze here you go https://github.com/fabriciogpp/bug1-2-20

fabricio

01/24/2018, 5:34 PM

it's simply my empty project. That was enough for the error to happen

Marcelus Trojahn

01/24/2018, 7:12 PM

@fabricio the only error I get here with your code is the connection to the mysql server that, obviously, I can't connect

Marcelus Trojahn

01/24/2018, 7:13 PM

If I comment out that part of your yml the code works...

Marcelus Trojahn

01/24/2018, 7:14 PM

Other than that I'd just assume that the problem is related to having 2 datasources or something like that.

Marcelus Trojahn

01/24/2018, 7:15 PM

Usually, when I have different datasources on my project I don't let Spring configure them... I do it myself

Marcelus Trojahn

01/24/2018, 7:19 PM

@Marcelus Trojahn uploaded a file: Untitled

-.txt

fabricio

01/24/2018, 8:17 PM

@Marcelus Trojahn hi. Yes, my project migrates data from a mysql db to a mongodb.

fabricio

01/24/2018, 8:18 PM

i connect to remote databases

fabricio

01/24/2018, 8:18 PM

the funny thing is that the project works with 1.2.10, but 1.2.20 it doesn't

sdeleuze

01/25/2018, 6:43 AM

I get same connection error with both Kotlin 1.2.10 and 1.2.20 as expected, likely a project datasource configuration issue.

👍 1

Ben

01/25/2018, 9:06 PM

How are others handling request validation in spring boot functional?

👍 1

sdeleuze

01/29/2018, 10:24 AM

Thanks to @awilkinson Kotlin version management with Gradle and Boot 2 will be much easier (even with Kotlin Gradle DSL) https://github.com/spring-projects/spring-boot/issues/11711#event-1445977182 It will be available in Boot 2 RC1 available this week

K 3

👍 4

❤️ 1

ziggy42

01/30/2018, 10:40 AM

Isn't there an

hibernate

specific channel? Should I ask here?

ziggy42

01/30/2018, 10:45 AM

Basically this is my situation, it's self explainatory. I followed the discussion here https://stackoverflow.com/questions/416208/jpa-map-collection-of-enums for the

roles

property, but I keep getting an error

-.kt

ziggy42

01/30/2018, 10:46 AM

When I start the application with `hibernate.ddl-auto: update`:

Caused by: org.hibernate.annotations.common.AssertionFailure: Fail to process type argument in a generic declaration. Member : com.my.package.entity.User#roles Type: class sun.reflect.generics.reflectiveObjects.WildcardTypeImpl

ziggy42

01/30/2018, 11:02 AM

Using a

MutableSet

fixes the problem, but why?

kruczaj

01/30/2018, 11:03 AM

https://stackoverflow.com/a/44213463

kruczaj

01/30/2018, 11:03 AM

Copy code

If you have a look at the interface definition of Set, you'll see it's defined as public interface Set<out E> : Collection<E> whereas MutableSet is defined as public interface MutableSet<E> : Set<E>, MutableCollection<E>

Set<out E> 's Java equivalent I believe is Set<? extends E> instead of what you were looking for Set<E>.

ziggy42

01/30/2018, 11:51 AM

thanks!

ziggy42

01/31/2018, 1:54 PM

Why do I get an error because

JvmField can only be applied to final property

-.kt