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parameternullable.scala
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parameternullable.scala
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// Copyright (c) 2013-2017 Rob Norris
// This software is licensed under the MIT License (MIT).
// For more information see LICENSE or https://opensource.org/licenses/MIT
package doobie.enum
import doobie.util.invariant._
import java.sql.ParameterMetaData._
import cats.kernel.Eq
import cats.kernel.instances.int._
/** @group Types */
sealed abstract class ParameterNullable(val toInt: Int) extends Product with Serializable {
def toNullability: Nullability =
Nullability.fromParameterNullable(this)
}
/** @group Modules */
object ParameterNullable {
/** @group Values */ case object NoNulls extends ParameterNullable(parameterNoNulls)
/** @group Values */ case object Nullable extends ParameterNullable(parameterNullable)
/** @group Values */ case object NullableUnknown extends ParameterNullable(parameterNullableUnknown)
def fromInt(n:Int): Option[ParameterNullable] =
Some(n) collect {
case NoNulls.toInt => NoNulls
case Nullable.toInt => Nullable
case NullableUnknown.toInt => NullableUnknown
}
def fromNullability(n: Nullability): ParameterNullable =
n match {
case Nullability.NoNulls => NoNulls
case Nullability.Nullable => Nullable
case Nullability.NullableUnknown => NullableUnknown
}
def unsafeFromInt(n: Int): ParameterNullable =
fromInt(n).getOrElse(throw InvalidOrdinal[ParameterNullable](n))
implicit val EqParameterNullable: Eq[ParameterNullable] =
Eq.by(_.toInt)
}