kotlinlang #spring

cf:
  apiHost: <myapi>
  organization: <myorg>
  refreshToken: <from ~/.cf/config.json>

  idmVersion: 3.4.13-SNAPSHOT
  zuulVersion: 4.0.1-SNAPSHOT
  services:
    idm:
      dockerTag: idmtag
      mavenVersion: idmversion
      path: idmpath
    zuul:
      dockerTag: zuultag
      mavenVersion: zuulversion
      path: zuulpath
    mobius:
      dockerTag: mobtag
      mavenVersion: mobversion
      path: mobpath
    inpower:
      dockerTag: inpowertag
      mavenVersion: inpowerversion
      path: inpowerpath

fitzoh

09/14/2017, 5:19 PM

to this

fitzoh

09/14/2017, 5:19 PM

Copy code

@Configuration
@ConfigurationProperties("cf")
class CfProperties {
    lateinit var apiHost: String
    lateinit var organization: String
    lateinit var refreshToken: String
    lateinit var zuulVersion: String
    lateinit var idmVersion: String
    lateinit var services: ServiceVersion
}


class ServiceVersions {
    lateinit var idm: ServiceVersion
    lateinit var zuul: ServiceVersion
    lateinit var mobius: ServiceVersion
    lateinit var inpower: ServiceVersion
}

class ServiceVersion {
    var dockerTag: String? = null
        get() = field.orNullIfBlank()
    var mavenVersion: String? = null
        get() = field.orNullIfBlank()
    var jarPath: String? = null
        get() = field.orNullIfBlank()
    private fun String?.orNullIfBlank() = if (this.isNullOrBlank()) null else this
}

fitzoh

09/14/2017, 5:19 PM

and getting

sdeleuze

09/15/2017, 7:53 AM

@fitzoh Indeed you need for now to provide nullable variable with default value, do hesitate to add a 👍 or a comment on https://github.com/spring-projects/spring-boot/issues/8762 to show your interest in a better support for Kotlin.

fitzoh

09/15/2017, 12:43 PM

👍 ‘d , thanks @sdeleuze

sdeleuze

09/15/2017, 12:43 PM

https://twitter.com/sdeleuze/status/908672070883659783

🎉 5

sdeleuze

09/15/2017, 4:29 PM

Not sure if anybody faced to this issue, but : https://youtrack.jetbrains.com/issue/KT-20283

pavel

09/19/2017, 2:54 AM

I am playing around with generating kotlin projects from start.spring.io. Is there any reason why kotlin-jpa plugin is not included in the build.gradle when I add JPA as a dependency?

sdeleuze

09/19/2017, 10:02 AM

Main reason is because this is not supported by https://github.com/spring-io/initializr, another could be that maybe at some point Hibernate could support Kotlin data classes like Spring Data Kay is not going to require kotlin-no-arg anymore. Feel free to open an issue in https://github.com/spring-io/initializr.

👍 1

davicdsalves

09/20/2017, 7:26 PM

Hi, can someone help me to understand a behavior with MessageSource and Kotlin? I have the following code that i use in my project:

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@Component
class MessageService(private val messageSource : MessageSource) {
    fun getMessage(id: String, vararg params: String) : String {
        val locale = LocaleContextHolder.getLocale()
        return messageSource.getMessage(id, arrayOf(params), id, locale)
    }
}

When called like this, where cardNumber is String:

val message = messageService.getMessage(messageKey, cardNumber)

the result message:

your card number: [Ljava.lang.String;@6b25306c

But if I change to use the spread operator,

return messageSource.getMessage(id, arrayOf(*params), id, locale)

it outputs the actual value of cardNumber. Why?

davicdsalves

09/20/2017, 7:32 PM

I understand the spread operator will copy the values of the array, but why in the first case it doesn't output the string value?

dancancro

09/20/2017, 11:29 PM

Hi everyone. I think this is an easy one... What is the right way to define a long text field for an entity? I tried this, and it works with my H2 in-memory dev build, but it doesn't with my production Postgresql build

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@Lob
    @Column(name = "jhi_body", nullable = false)
    var body: String = "",

I get errors like:

ERROR 6245 --- [ XNIO-2 task-9] o.h.engine.jdbc.spi.SqlExceptionHelper : Bad value for type long : This is a long text value that I want to save

☕ 1

google 1

dancancro

09/21/2017, 12:08 AM

Nevermind. I just needed to add a

org.hibernate.annotations.Type

annotation

Czar

09/26/2017, 9:56 AM

I have strangest problem. Here's my repos config:

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buildscript {
	repositories {
		jcenter()
		maven(url = "<https://repo.spring.io/milestone>")
		maven(url = "<https://repo.spring.io/libs-milestone>")
		maven(url = "<https://plugins.gradle.org/m2/>")
	}
	// ...
}

When I try to switch my kotlin version from 1.1.50 to 1.2-M2, I get following error from gradle:

Could not GET '<https://repo.spring.io/libs-milestone/org/jetbrains/kotlin/kotlin-gradle-plugin/1.2-M2/kotlin-gradle-plugin-1.2-M2.pom>'. Received status code 401 from server: Unauthorized Enable Gradle 'offline mode' and sync project

I don't know if it's a Gradle or Spring issue.

sdeleuze

09/26/2017, 12:23 PM

Strange I am going to ask

sdeleuze

09/26/2017, 12:26 PM

Maybe just use https://repo.spring.io/milestone/org/jetbrains/kotlin/kotlin-gradle-plugin/1.2-M2/kotlin-gradle-plugin-1.2-M2.pom ?

sdeleuze

09/26/2017, 12:27 PM

Not sure libs-milestone is expcted to be used externally

sdeleuze

09/26/2017, 12:27 PM

Pretty sure it is included in milestone

Czar

09/26/2017, 12:27 PM

If I remove libs-milestone, gradle can't find spring-security-core

sdeleuze

09/26/2017, 12:27 PM

hum, ok

sdeleuze

09/26/2017, 12:28 PM

I have asked to our infra team

Czar

09/26/2017, 12:29 PM

there's also this headache: https://jira.spring.io/browse/SPR-16008