entities.EntityResolver.kt Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of baku Show documentation

helps you focus your REST API back-end on the business logic

There is a newer version: 0.9.27

package com.github.fluidsonic.baku

import kotlinx.coroutines.GlobalScope
import kotlinx.coroutines.channels.ReceiveChannel
import kotlinx.coroutines.channels.flatMap
import kotlin.reflect.KClass


internal class EntityResolver(
	private val resolvers: Map, suspend Transaction.(ids: Set) -> ReceiveChannel>
) {

	suspend fun resolve(ids: Set, transaction: Transaction) =
		ids
			.groupBy { it.factory }
			.map { (factory, ids) ->
				resolvers[factory.idClass]
					?.let { resolve -> transaction.resolve(ids.toSet()) }
					?: GlobalScope.emptyReceiveChannel()
			}
			.toChannel()
			.flatMap { it }
}