com.augustnagro.magnum.ImmutableRepo.scala Maven / Gradle / Ivy

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package com.augustnagro.magnum

import java.sql.ResultSet
import javax.sql.DataSource
import scala.util.{Try, Using}

/** Repository supporting read-only queries. When entity `E` does not have an
  * id, use `Null` for the `Id` type.
  * @tparam E
  *   database entity class
  * @tparam ID
  *   id type of E
  */
open class ImmutableRepo[E, ID](using defaults: RepoDefaults[?, E, ID]):

  /** Count of all entities */
  def count(using DbCon): Long = defaults.count

  /** Returns true if an E exists with the given id */
  def existsById(id: ID)(using DbCon): Boolean = defaults.existsById(id)

  /** Returns all entity values */
  def findAll(using DbCon): Vector[E] = defaults.findAll

  /** Find all entities matching the specification. See the scaladoc of [[Spec]]
    * for more details
    */
  def findAll(spec: Spec[E])(using DbCon): Vector[E] = defaults.findAll(spec)

  /** Returns Some(entity) if a matching E is found */
  def findById(id: ID)(using DbCon): Option[E] = defaults.findById(id)

  /** Find all entities having ids in the Iterable. If an Id is not found, no
    * error is thrown.
    */
  def findAllById(ids: Iterable[ID])(using DbCon): Vector[E] =
    defaults.findAllById(ids)

end ImmutableRepo