tree 0e4cf7a84a214713c44dc524880920a320a89027
parent 8de799db3e4830c18188d9041e422b3e9ebbf739
author Xikui Wang <xkkwww@gmail.com> 1508739527 -0700
committer Xikui Wang <xkkwww@gmail.com> 1508779709 -0700

[ISSUE PENDING][FUN] Prevent blind result write in external UDF

- user model changes: no
- storage format changes: no
- interface changes: no

Details:
Current the result from UDF doesn't have type check. It's possible to
write data into result frame with a different datatype. This will cause
unpredicted behavior when reading the data. Also, to keep things
simpler, when return data type is not valid, we throw exception instead
of return null.

Change-Id: Ifce4a9e882febe4529f5c53e54db78e0cfa326fe
Reviewed-on: https://asterix-gerrit.ics.uci.edu/2082
Sonar-Qube: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Contrib: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Steven Jacobs <sjaco002@ucr.edu>