tree 862c7022fcf6beee38b5532cc937a8110c97748a
parent 018ec4a1d45d7cbd922d31f7a4e2c531e43e6cf1
author Till Westmann <tillw@apache.org> 1469669641 -0700
committer Till Westmann <tillw@apache.org> 1469818953 -0700

Implement EXPLAIN for SQL++

- move some code from static methods in ResultUtils to a stateful
  ResultPrinter to facilitate reuse (we create one ResultWriter per request)
- tiny cleanup in LogicalOperatorPrettyPrintVisitor

Change-Id: I7b7028fb243d494150cac525c73b2d77b0068646
Reviewed-on: https://asterix-gerrit.ics.uci.edu/1020
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Yingyi Bu <buyingyi@gmail.com>