Created
October 16, 2019 11:13
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Scala Circe DropNull
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| def _reduce(l: Seq[(String, Json)]): Json = l match { | |
| case ::(x, xs) => | |
| if (x._2.isNull) { | |
| dropNull(Json.fromFields(xs)) | |
| } else { | |
| val jj = Json.fromJsonObject(JsonObject((x._1, dropNull(x._2)))) | |
| xs match { | |
| case Nil => jj | |
| case _ => dropNull(Json.fromFields(xs)).deepMerge(jj) | |
| } | |
| } | |
| case Nil => Json.Null | |
| } | |
| def dropNull(j: Json): Json = j.asObject match { | |
| case None => | |
| j.asArray match { | |
| case Some(value) => | |
| Json.fromValues(value.map { a => | |
| a.asObject.map(_.toList match { | |
| case x :: xs => | |
| _reduce(x :: xs) | |
| case Nil => Json.Null | |
| }) | |
| dropNull(a) | |
| }) | |
| case None => j | |
| } | |
| case Some(value) => | |
| value.toList match { | |
| case Nil => j | |
| case l => _reduce(l) | |
| } | |
| } |
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