
doobie.enum.parameternullable.scala Maven / Gradle / Ivy
package doobie.enum
import doobie.util.invariant._
import doobie.enum.{ nullability => N }
import java.sql.ParameterMetaData._
import cats.kernel.Eq
import cats.kernel.instances.int._
object parameternullable {
/** @group Implementation */
sealed abstract class ParameterNullable(val toInt: Int) {
def toNullability: N.Nullability =
N.Nullability.fromParameterNullable(this)
}
/** @group Values */ case object NoNulls extends ParameterNullable(parameterNoNulls)
/** @group Values */ case object Nullable extends ParameterNullable(parameterNullable)
/** @group Values */ case object NullableUnknown extends ParameterNullable(parameterNullableUnknown)
/** @group Implementation */
object ParameterNullable {
def fromInt(n:Int): Option[ParameterNullable] =
Some(n) collect {
case NoNulls.toInt => NoNulls
case Nullable.toInt => Nullable
case NullableUnknown.toInt => NullableUnknown
}
def fromNullability(n: N.Nullability): ParameterNullable =
n match {
case N.NoNulls => NoNulls
case N.Nullable => Nullable
case N.NullableUnknown => NullableUnknown
}
def unsafeFromInt(n: Int): ParameterNullable =
fromInt(n).getOrElse(throw InvalidOrdinal[ParameterNullable](n))
implicit val EqParameterNullable: Eq[ParameterNullable] =
Eq.by(_.toInt)
}
}
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