Tegral PrismaKT: Prisma integration with JetBrains Exposed

[utybo]

Hi to whoever will read this, long time no see! I'm back and am finally able to reveal some stuff I've been working on in the past months.

Tegral PrismaKT

Tegral PrismaKT is a module that generates JetBrains Exposed DAOs and table definitions from your Prisma schema.

In short, automatically get from this:

generator prismakt {
  provider      = "gradle --console=plain -q runGeneratorInternal"
  output        = "../build/prismaGeneratedSrc"
  exposedTarget = "sql" // or dao
}

datasource db {
  provider = "postgresql"
  url      = "file:./dev.db"
}

model User {
  identifier Int     @id @default(autoincrement())
  email      String  @unique
  name       String?
}

To this:

public object UserTable : IdTable<Int>() {
  public val email: Column<String> = text(name = "email")

  public val name: Column<String?> = text(name = "name").nullable()

  public val identifier: Column<EntityID<Int>> = integer(name = "identifier").entityId()

  public override val id: Column<EntityID<Int>>
    get() = identifier
}

public class UserEntity(
  id: EntityID<Int>,
) : Entity<Int>(id) {
  public var email: String by UserTable.email

  public var name: String? by UserTable.name

  public companion object : EntityClass<Int, UserEntity>(UserTable)
}

It integrates into Prisma's existing "generator" concept and generates classes via Prisma's datamodel (DMMF). For more information, check Prisma's article here. Massive thanks to the work done by YassinEldeeb on create-prisma-generator that allowed me to get good documentation on how to do things :)

Status

This will be a "long-life" issue which tracks the progress on PrismaKT. Due to the high complexity of what Prisma can handle, there will be a fairly long period spent debugging things PrismaKT gets totally wrong.

Expected initial release for 0.0.4 along with Tegral Niwen (which is required for this issue)

Initial release: 0.0.4 (planned)

• Basic support for Prisma files and JetBrains Exposed SQL or DAO + SQL.
• Documentation on how to integrate PrismaKT
• A basic testsuite that covers most edge cases

Next release: 0.0.5

• Support 1-1 relations (reference)
• Support 1-n relations (reference)
• Support n-n relations (reference)

For alpha release

• Multi-column @@id fields. This will not be possible with the Exposed DAO API: DAO on compound/multiple primary key ?  JetBrains/Exposed#964, but should still be generated for the SQL API
• Automatically generate Database.connect calls using Prisma's datasource section

For beta release

• JSON column support
• Integration with Tegral DI and Tegral Web

For stable release

• Ktorm support?