[TAJO-1948] Change GroupbyNode::setAggFunctions and getAggFunctions to set and get List

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.12.0
• Component/s: Planner/Optimizer
• Assignee: Dongkyu Hwangbo
• Reporter: Hyunsik Choi
• Created: 23/Oct/15 04:44
• Updated: 03/Dec/15 08:33
• Resolved: 03/Dec/15 06:28

Description

See TAJO-1938. It would simplify lots of codes for 'for-loop' on Targets if we Change GroupbyNode::setAggFunctions and getAggFunctions to set and get List.