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sangria v0.4.2 Release Notes

Release Date: 2015-10-12 // over 8 years ago
    • Query complexity calculation mechanism is implemented (#85). This mechanism makes a rough estimation of the query complexity before it is executed. Every field in the query gets a default score 1.0. The "complexity" of the query is the sum of all field scores. You can customize the field score with complexity argument: scala Field("pets", OptionType(ListType(PetType)), arguments = Argument("limit", IntType) :: Nil, complexity = Some((args, childrenScore) => 25.0D + args.arg[Int]("limit") * childrenScore), resolve = ctx => ...) If you would like to use this feature, you need to provide measureComplexity argument to the Executor. For example: ```scala val rejectComplexQueries = (c: Double) => if (c > 1000) throw new IllegalArgumentException(s"Too complex query: max allowed complexity is 1000.0, but got $c") else ()

    val exceptionHandler: Executor.ExceptionHandler = { case (m, e: IllegalArgumentException) => HandledException(e.getMessage) }

    Executor.execute(schema, query, exceptionHandler = exceptionHandler, measureComplexity = Some(rejectComplexQueries))

      The complexity of full introspection query (used by tools like GraphiQL) is `102.0`.
* 👍 json4s-jackson is now supported in addition to native (#84). This results in minor import change:
  ```scala
  // before

  sangria.integration.json4s._

  // after

  // either (same behaviour as before)
  sangria.integration.json4s.native._

  //or
  sangria.integration.json4s.jackson._
    • ⚡️ json4s is updated to version 3.3.0 (#84)
    • Provide a helpful error messages if schema has a broken circular references (which cause fields to be null) (#83)