Hi, getting back into Kotlin (on the server) after...
# announcementsa
andyg
12/19/2019, 12:11 PMHi, getting back into Kotlin (on the server) after being away for a while. Searching for idiomatic Kotlin examples of a basic CRUD class, without Hibernate or other ORM. Is it possible for the class to have its own .save() and .get() methods, and also to have immutable (val) internal data? (i.e. want to avoid the
var id:Int = 0m
Mike
12/19/2019, 12:21 PMTake a look at spring-data-jdbc for a very nice example. It is built to accommodate Data Driven Design, fully 'understands' Kotlin, no reflection for mappings.
A very clean example of what can be done when you don't support many-to-many relationships 'magically' like Hibernate/JPA does.
https://spring.io/projects/spring-data-jdbc
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andyg
12/19/2019, 12:45 PMhi, thanks Mike, most of what I am seeing here related to DBs are Java examples, and using Hibernate https://spring.io/guides/gs/accessing-data-mysql/
m
Mike
12/19/2019, 12:55 PMThat's because the guide is using Spring-data-jpa, which is JPA/Hibernate.
Read through the user guide for spring-data-jdbc, or give me a couple seconds. The main creator did a great presentation on it at SpringOne. He had one on Learn JPA in 60 minutes, or something like that, and he talked about spring-data-jdbc, so I then watched that, and was sold for many use cases.
Mike
12/19/2019, 12:56 PMMike
12/19/2019, 12:58 PMDoesn't look like they have a guide yet for Spring Data JDBC. Not too surprised, as it's only been GA for a year or so at most.
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andyg
12/19/2019, 1:01 PMCool thanks. my data model is quite simple. I am just having trouble getting the class to look elegant or idiomatic, but like I said it's been a while so maybe I am mis-remembering.
I hate having to use
var name = "".get(id)