org.scalaquery.ql.QueryModifier.scala Maven / Gradle / Ivy

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package org.scalaquery.ql

import org.scalaquery.util.Node

trait QueryModifier extends Node

sealed abstract class Ordering extends QueryModifier {
  val by: Node
  val nullOrdering: Ordering.NullOrdering
  def nodeChildren = by :: Nil
  def nullsFirst: Ordering
  def nullsLast: Ordering
}

object Ordering {
  final case class Asc(val by: Node, val nullOrdering: Ordering.NullOrdering = Ordering.NullsDefault) extends Ordering {
    override def toString = "Ordering.Asc"
    def nullsFirst = copy(nullOrdering = Ordering.NullsFirst)
    def nullsLast = copy(nullOrdering = Ordering.NullsLast)
  }

  final case class Desc(val by: Node, val nullOrdering: Ordering.NullOrdering = Ordering.NullsDefault) extends Ordering {
    override def toString = "Ordering.Desc"
    def nullsFirst = copy(nullOrdering = Ordering.NullsFirst)
    def nullsLast = copy(nullOrdering = Ordering.NullsLast)
  }

  sealed trait NullOrdering
  final case object NullsDefault extends NullOrdering
  final case object NullsFirst extends NullOrdering
  final case object NullsLast extends NullOrdering
}

final case class Grouping(val by: Node) extends QueryModifier {
  def nodeChildren = by :: Nil
  override def toString = "Grouping"
}