Json4sHitReader should get _id from hit.

[hanrw]

    implicit def Json4sHitReader[T](implicit json4s: Serialization, formats: Formats, mf: Manifest[T]): HitReader[T] =
      new HitReader[T] {
        override def read(hit: Hit): Try[T] = Try {
          json4s.read[T](hit.sourceAsString)
        }
      }

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[hanrw]

my solution may not good.

object ElasticJson4s {

  object Implicits {

    implicit def Json4sHitReader[T](implicit json4s: Serialization, formats: Formats, mf: Manifest[T]): HitReader[T] =
      new HitReader[T] {
        override def read(hit: Hit): Try[T] = Try {
          val metaFields = s"""{"_id": "${hit.id}","_type": "${hit.`type`}","_index": "${hit.index}" ,"_version": "${hit.version}", """
          val source = metaFields + hit.sourceAsString.substring(1)
          json4s.read[T](source)
        }
      }

    implicit def Json4sAggReader[T](implicit json4s: Serialization, formats: Formats, mf: Manifest[T]): AggReader[T] =
      new AggReader[T] {
        override def read(json: String): Try[T] = Try {
          json4s.read[T](json)
        }
      }

    implicit def Json4sIndexable[T <: AnyRef](implicit json4s: Serialization, formats: Formats): Indexable[T] =
      new Indexable[T] {
        override def json(t: T): String = json4s.write(t)
      }
  }

}

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.