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post.scala

private def executeGraphQLQuery(query: Document, op: Option[String], vars: JsObject)(implicit e: ExecutionContext) = {
  Executor.execute(
    SchemaDef.ShopSchema,
    query,
    repository,
    variables = vars,
    operationName = op
  ).map(OK -> _)
    .recover {
      case error: QueryAnalysisError => BadRequest -> error.resolveError
      case error: ErrorWithResolver => InternalServerError -> error.resolveError
    }
}