Good catch, we should use

@Nullable

on

equals

parameter here

Could you please create an issue for Spring Data team on their bug tracker ?

I will make a pass on Spring Framework

Hi! Any ideas about how to fix "No default constructor for entity:"? I applied the

noarg

and

jpa

plugins and it doesn't work. The only thing that fixes it is to make the fields optional, which means that the plugins are somehow not working.

Untitled.kt

this is my build.gradle.kts

and this is my entity

it also didn't work with kotlin version

1.2.71

I have worked on type-safe customization of an existing Kofu application, feedback welcome https://github.com/spring-projects/spring-fu/issues/228

Hi guys! I have a question about spring. I need to make a session buffer to add or remove items. On the client, we send items to the server buffer and after we can save it to database with special command. Is it possible?

Hi! I get the following error when I package a composite project with maven:

[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.0.5.RELEASE:repackage (default) on project pkt-event-manager: Execution default of goal org.springframework.boot:spring-boot-maven-plugin:2.0.5.RELEASE:repackage failed: Unable to find main class -> [Help 1]

with the following pom.xml file for a module

To fix it I have to add the following block

hmm… getting an ISE on a null parameter… https://pastebin.com/3kxCNZ4e … maybe jackson isn’t configured right for the spring webflux context?

@Configuration
open class MessagingConfig {

    @Autowired
    open fun myFactory(factory: SimpleRabbitListenerContainerFactory) {
        factory.setDefaultRequeueRejected(false)
        factory.setAfterReceivePostProcessors(MessagePostProcessor {
            it.messageProperties.contentType = MediaType.APPLICATION_JSON_VALUE
            return@MessagePostProcessor it
        })
    }

    @Bean
    open fun jackson2Json(om: ObjectMapper): SmartMessageConverter {
        return Jackson2JsonMessageConverter(om)
    }

    @Bean
    open fun mappingJackson2(om: ObjectMapper): MappingJackson2MessageConverter {
        val mc = MappingJackson2MessageConverter()
        mc.objectMapper = om
        return mc
    }

    @Bean
    open fun defaultMessageHandlerMethodFactory(jackson: MappingJackson2MessageConverter): DefaultMessageHandlerMethodFactory {
        val factory = DefaultMessageHandlerMethodFactory()
        factory.setMessageConverter(jackson)
        return factory
    }


    @Bean
    open fun builder(): Jackson2ObjectMapperBuilderCustomizer {
        return Jackson2ObjectMapperBuilderCustomizer {
            it.modules(JavaTimeModule(), KotlinModule())
            it.featuresToDisable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS)
        }
    }


    @Configuration
    open class RabbitConfigurer(val dmhmf: DefaultMessageHandlerMethodFactory) : RabbitListenerConfigurer {
        override fun configureRabbitListeners(registrar: RabbitListenerEndpointRegistrar?) {
            registrar?.messageHandlerMethodFactory = dmhmf
        }
    }
}

hmm… added this

@Configuration
    open class ReactiveConfigurer(
        private val encoder: Jackson2JsonEncoder,
        private val decoder: Jackson2JsonDecoder
    ): WebFluxConfigurer {
        override fun configureHttpMessageCodecs(configurer: ServerCodecConfigurer) {
            configurer.defaultCodecs().jackson2JsonEncoder(encoder)
            configurer.defaultCodecs().jackson2JsonDecoder(decoder)
        }
    }

a debug of the attached instance shows the kotlin module

looks like I figured it out, forgot @RequestBody on the controller method parameter

Dang, 1 minute into this channel and I’ve already figured out I was wrong not to invest a little bit more into learning about Kotlin and spring

https://spring.io/guides/tutorials/spring-boot-kotlin/ should provide a good basis.

Makes sense 🙂

If you have bugs like all-open plugin not working feel free to provide a repro

I will have a look

But I liked your live coding on Twitch

Thanks!

Very interesting way of sharing knowledge

I like to think of it as sharing the way I’m learning while doing, rather than really sharing knowledge 😉 Puts less pressure on me, mentally, heheh.

Where i can find

.asType<>

method? Because i see only

.as

and ofc Kotlin transform it to as with quotes

Anyone know of a good spring boot tutorial (using Kotlin of course) that would include some things like postgres storage and migrations, as well as token based auth?

Setting up a hello world is great and all, but I’m not finding resources on getting actual things built