api.Join.scala Maven / Gradle / Ivy
/*
* Copyright 2021 Kári Magnússon
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package kuzminki.api
import scala.reflect.{classTag, ClassTag}
import scala.annotation.tailrec
import kuzminki.column.{ColInfo, TypeCol}
import kuzminki.model.ModelRead
trait Join[A <: Model, B <: Model] {
val a: A
val b: B
}
object Join {
def create[A <: Model, B <: Model](implicit tagA: ClassTag[A], tagB: ClassTag[B]): Join[A, B] = {
DefaultJoin(Model.get[A], Model.get[B])
}
}
case class DefaultJoin[A <: Model, B <: Model](a: A, b: B) extends Join[A, B]
abstract class JoinRead[A <: Model, B <: Model](
implicit tagA: ClassTag[A],
tagB: ClassTag[B]
) extends Join[A, B]
with ModelRead {
val a = Model.get[A]
val b = Model.get[B]
val convert: Join[A, B] => this.type = _ => this
}