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From GitBox <...@apache.org>
Subject [GitHub] atoomula commented on a change in pull request #911: Support for types in Samza SQL UDF
Date Sat, 09 Feb 2019 14:52:15 GMT
atoomula commented on a change in pull request #911: Support for types in Samza SQL UDF
URL: https://github.com/apache/samza/pull/911#discussion_r255300768
 
 

 ##########
 File path: samza-sql/src/main/java/org/apache/samza/sql/fn/GetSqlFieldUdf.java
 ##########
 @@ -51,22 +52,21 @@
  *           - sessionKey (Scalar)
  *
  */
-@SamzaSqlUdf(name = "GetSqlField")
+@SamzaSqlUdf(name = "GetSqlField", description = "Get an element from complex Sql field.")
 
 Review comment:
   GetSqlField is kind of limiting as it returns only a String. For instance, we cannot get
a sub-record or an array or any other type. Just wondering if other cases work if we return
an object from execute ? Or since now we have ability to add more methods to an Udf (although
I'm still not clear on how these different methods can be invoked in Udf unless they are fn
overloads), is there any other way we could make it return different types ?

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