[FLINK-7859] Allow field annotations to define TypeInformation

• Type: Improvement
• Status: Open
• Priority: Not a Priority
• Resolution: Unresolved
• Affects Version/s: 1.3.2
• Component/s: API / Type Serialization System
• Labels: auto-deprioritized-major auto-deprioritized-minor auto-unassigned
• Assignee: Unassigned
• Reporter: Timo Walther
• Created: 17/Oct/17 07:54
• Updated: 31/Dec/21 22:38

Description

Right now it is impossible to define custom TypeInformation for specific fields. For example, we cannot provide information about a Row type that is a field of Scala case class. An option would be to allow fields to be annotated with @TypeInfo such that a type information can be provided.

case class Test(a: Int, b: String, @TypeInfo(classOf[MyRowFactory]) c: Row)