tree b8e31f808ee6e878dc4b1f20b9f45d70ebdb9677
parent db0e80ee91adab00bdcb2a34aa649e1ebfb41a9d
author Hussain Towaileb <Hussain.Towaileb@Couchbase.com> 1575888939 +0300
committer Hussain Towaileb <hussainht@gmail.com> 1576001621 +0000

[ASTERIXDB-2667][FUN] Share code base between string functions

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

Details:
- String functions concat, string_concat and string_join
  now share the same code instead of each having a different
  evaluator class.
- Added test cases for string_join function.
- Added support to deep missing/null checking in list
  items. Now it's possible to give a deeper (list items)
  missing value a higher priority over null arguments
  outside a list between parameters.
  Example:
  somefun([1, missing], null);
  It's possible to deeply check the list items first,
  and hence return a missing, or only do first level check
  and output would be null.

Change-Id: I41b644c6841b222d1c6c529b2f9189f42178e28c
Reviewed-on: https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/4023
Contrib: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Hussain Towaileb <hussainht@gmail.com>
Reviewed-by: Ali Alsuliman <ali.al.solaiman@gmail.com>