kotlinlang #spring

Finally, being able to remove lateinit and var from my class dependencies would be nice in favor of using delegated properties for dependency injection. To be honest, the kotlin spring integration is pretty great to start with, thanks for making it that way 👍

sdeleuze

11/28/2016, 10:30 PM

Hum interesting I was not aware of this kotlin-jpa-specification-dsl project !

yousuf.haque

11/28/2016, 10:48 PM

yeah, it makes writing specifications WAY easier and more idiomatic

nat

11/30/2016, 7:35 AM

@nat has left the channel

cir0x

11/30/2016, 10:39 AM

Hi. Whenever I try to save this object I get an

Copy code

IllegalArgumentException: Can not set final [Ljava.lang.Integer; field ColumnInnerEmbed.array to ColumnInnerEmbed

My Code:

Copy code

@Entity
class Test() {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    val id: Long = 0

    @Embedded
    val field: FieldEmbed = FieldEmbed()

}

@Embeddable
class FieldEmbed {

    @Embedded
    val innerEmbed = arrayOf(ColumnInnerEmbed(), ColumnInnerEmbed(), ColumnInnerEmbed(), ColumnInnerEmbed(), ColumnInnerEmbed(), ColumnInnerEmbed())

}

@Embeddable
class ColumnInnerEmbed() : Serializable {

    val array: Array<Int> = arrayOf(0, 0, 0, 0, 0, 0)

}

Any ideas?

miha-x64

11/30/2016, 11:00 AM

var

cir0x

11/30/2016, 11:32 AM

When I change val to var I get:

Copy code

IllegalArgumentException: Can not set [Ljava.lang.Integer; field ColumnInnerEmbed.array to ColumnInnerEmbed

miha-x64

11/30/2016, 11:35 AM

looks like

intArray[index] = columnInnerEmbed

statement

cir0x

11/30/2016, 11:42 AM

I’ve changed

Copy code

val innerEmbed = arrayOf(ColumnInnerEmbed(), ColumnInnerEmbed(), ColumnInnerEmbed(), ColumnInnerEmbed(), ColumnInnerEmbed(), ColumnInnerEmbed())

Copy code

var innerEmbed = listOf<ColumnInnerEmbed>(ColumnInnerEmbed(), ColumnInnerEmbed(), ColumnInnerEmbed(), ColumnInnerEmbed(), ColumnInnerEmbed(), ColumnInnerEmbed())

and now it works.

miha-x64

11/30/2016, 11:43 AM

🙄

cir0x

11/30/2016, 11:44 AM

Thanks

netodevel

12/07/2016, 2:24 PM

Hello everyone, I am developing a scaffold for api in kotlin with spring boot, integrated to the spring boot cli. Who interested in contributing: https://github.com/NetoDevel/spring-boot-scaffold-kotlin

sdeleuze

12/07/2016, 3:21 PM

Thanks for sharing

sdeleuze

12/07/2016, 3:21 PM

My first question would be why is it not developed in Kotlin but in Java 😉

sdeleuze

12/07/2016, 3:24 PM

Other question, it is nice to be able to use scafolding tools both on command line and integrated with the IDE, so is there some IDEA integration to be able to use it there

sdeleuze

12/07/2016, 3:25 PM

I also think that you could assume that on long term most projects will user Gradle Kotlin support

sdeleuze

12/07/2016, 3:25 PM

So maybe you could just focus on that, using https://github.com/sdeleuze/spring-boot-kotlin-demo/blob/master/build.gradle.kts as an example

netodevel

12/07/2016, 5:52 PM

Yes we will support gradle is on everyone's list. This question of making a plugin for eclipse is interesting, have you ever done something like that?

jasper

12/08/2016, 5:43 AM

Copy code

@RequestMapping(value = "/products/new/{token}", method = arrayOf(RequestMethod.GET))open fun getNextProducts(@PathVariable token: String,
                             @RequestParam(required = false) limit: Int = 50): List<AkaneoProduct>

jasper

12/08/2016, 5:44 AM

minor annoyance. had to use

defaultValue

param in the annotation, because the above causes:

jasper

12/08/2016, 5:45 AM

Optional int parameter 'limit' is present but cannot be translated into a null value due to being declared as a primitive type. Consider declaring it as object wrapper for the corresponding primitive type.

jasper

12/08/2016, 5:45 AM

seems Kotlin Int compiles down to a primitive

nfrankel

12/08/2016, 8:15 AM

you mean you cannot write

@RequestParam(required = false) limit: Int?

sdeleuze

12/08/2016, 8:40 AM

@jasper What version of Spring Framework are you using ?

sdeleuze

12/08/2016, 8:41 AM

I would like to understand if ir is related with https://jira.spring.io/browse/SPR-14165 which is available in latest 5.0 snapshots or not

jasper

12/08/2016, 8:48 AM

Hi @sdeleuze, I'm using Boot 1.4.1.RELEASE with pulls in spring core 4.x.

dariuszbacinski

12/08/2016, 1:36 PM

@dariuszbacinski has left the channel

sdeleuze

12/08/2016, 3:46 PM

I guess

@RequestParam(required = false) limit: Int = 50

does not make sense since it is not nullable

sdeleuze

12/08/2016, 3:46 PM

@RequestParam(required = false) limit: Int? = 50

should work better