[jira] [Created] (FLINK-7859) Allow field annotations to define TypeInformation

[Shang Yuanchun (Jira)]

Timo Walther created FLINK-7859:
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             Summary: Allow field annotations to define TypeInformation
                 Key: FLINK-7859
                 URL: https://issues.apache.org/jira/browse/FLINK-7859
             Project: Flink
          Issue Type: Improvement
          Components: Type Serialization System
            Reporter: Timo Walther
            Assignee: Timo Walther


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.

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



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