在地图上使用案例类，在格雷姆斯卡拉使用嵌套案例类

Question

How to write new Marshallable for the below case class .

case class CCWithLabelAndId(
  s: String,
  @id id: Int,
  l: Long,
  o: Option[String],
  seq: Seq[String],
  map: Map[String, String],
  nested: NestedClass)

Taken from MarshallableSpec from gremlin-scala library. Seq and Option works without creating new Marshallable as explained in the documentation.

Also what should be cardinality and datatype for map and nested classes when defining the schema of such vertexes.

Answer 1

Maps are not supported out of the box, because they don't have an underlying representation in the graph. There's only Cardinality.[single|list|set] in Tinkerpop3.