[HIVE-9744] Move common arguments validation and value extraction code to GenericUDF

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.2.0
• Component/s: UDF
• Assignee: Alexander Pivovarov Assign to me
• Reporter: Alexander Pivovarov
• Created: 21/Feb/15 00:38
• Updated: 18/May/15 19:48
• Resolved: 05/Mar/15 01:31

Description

most of the UDFs

• check if arguments are primitive / complex
• check if arguments are particular type or type_group
• get converters to read values
• check if argument is constant
• extract arguments values

Probably we should move these common methods to GenericUDF

Issue Links

• is related to: HIVE-9817 fix DateFormat pattern in hive-exec
• is related to: HIVE-9480 Build UDF TRUNC to implement FIRST_DAY as compared with LAST_DAY
• links to: https://reviews.apache.org/r/31404/