kotlin-jpa plugin not generating default constructor

Question

I am using kotlin-jpa to generate default constructor to my kotlin entity, however, does are not being generated:

I just used:

id("org.jetbrains.kotlin.plugin.jpa") version "1.3.21"

@Entity
data class PlanSubscription(@Id ...

But event with the kotlin-jpa plugin the constructor is not generated:

No default (no-argument) constructor for class

You shouldn't use data classes for entities: the toString/hashCode/equals don't fit for entities, and entities should be open to support lazy-loading based on dynamic proxies. — JB Nizet
– JB Nizet, Commented Mar 18, 2019 at 19:47
@Skizo-ozᴉʞS Sorry for the delay. I made a mistake and pasted the wrong plugin kotlin.jvm Instead of kotlin jpa. I edit the question to reflect that I'm already using the kotlin jpa plugin, but the no-arg constructors are not being generated. — Guilherme Torres Castro
– Guilherme Torres Castro, Commented Apr 5, 2019 at 18:12
You need to define an empty constructor, can you please add a default constructor for your class and try it again? — Skizo-ozᴉʞS ツ
– Skizo-ozᴉʞS ツ, Commented Apr 7, 2019 at 17:02
@Skizo-ozᴉʞS But that what the kotlin-jpa is supposed to do — Guilherme Torres Castro
– Guilherme Torres Castro, Commented Apr 8, 2019 at 16:07

Gavin · Accepted Answer · 2019-07-22 10:40:46Z

0

I had a very similar issue. While the advice of not using data classes may or may not be a useful one I found that it was the version of the jpa plugin that was at issue try using version 1.3.41

id "org.jetbrains.kotlin.plugin.jpa" version "1.3.41"

answered Jul 22, 2019 at 10:40

Gavin

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Luis Ferreira · Accepted Answer · 2021-07-23 22:09:33Z

0

You need to set

`<dependency>
   <groupId>org.jetbrains.kotlin</groupId>
   <artifactId>kotlin-reflect</artifactId>
   <version>1.1.0</version>
</dependency>`

in your pom.xml

answered Jul 23, 2021 at 22:09

Luis Ferreira

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