Discussion on "How I built my first Kotlin-VertX-Hibernate stack"

Jan Vladimir Mostert · 2017-01-03T17:33:57.942Z

I've been using Kotlin for close to 6 months now, and have been experimenting with quite a number of frameworks trying to find the combination that will allow me the most flexibility as well as great performance. Since I've used Spring Boot previousl...

Very informative. Thanks for writing this. :)

A few small suggestions. Vert.x web Router has a 'blockingHandler' so that you don't need the extra calls to 'executeBlocking', and therefore have simpler code. Secondly, you can pass the instance of EntityManagerFactory to your verticles in a constructor and use it in any of your code as long as it is declared 'final'. Finally, you could have a 'Main class which starts your Vert.x app by calling 'Vertx.vert()' and do your blocking configuration (Hibernate/LiquiBase/etc...) before you deploy your first Verticle.

1: router.get("/blocking").blockingHandler { it.response().end(" Hello World :-) ") },

I've seen that, the plan is to replace the blocking code with Quasar fibers at some point, hence the reason I've been writing it like that, but valid point :-)

In Kotlin + Quasars the executeBlocking would be replaced with fiber @Suspendable { .. blocking code .. }.get()

2: that sounds awesome, I did not know that. Do you have an example of that?

3: any major benefit doing it this way?

Nice share. But, why you did not put this on github?

You are more than welcome to publish it on Github, I'll share the link here as well.

Good work and nice write up! But the end result compared to what you'd get with Spring repositories and annotations is much more cluttered. I understand that you went down this path until Spring 5 stable is released but when that happens I don't see any reason someone would go with vertx+hibernate instead of that.

I've since improved my implementation by a lot and it looks cleaner than Spring. The majority of the boilerplate you see in my sample implementation is now gone. Startup time is still around one second and I have my own annotation implementation which gives me exactly what I need. Might opensource it in the future once I've battle tested it on enough projects.

Great idea. I'm sure many people would be interested including myself. I also would like to see kotlin coroutines with vertx APIs. They have been nicely integrated with spring 5 github.com/alek-sys/spring-coroutines-demo

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How I built my first Kotlin-VertX-Hibernate stack

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