[BEAM-2609] refine UDF interface

• Type: Task
• Status: Resolved
• Priority: P2
• Resolution: Fixed
• Fix Version/s: Not applicable
• Component/s: dsl-sql
• Labels: Done dsl_sql_merge
• Assignee: Mingmin Xu
• Reporter: Mingmin Xu
• Created: 12/Jul/17 21:05
• Updated: 24/Jul/20 20:16
• Resolved: 07/Sep/17 17:07

Description

Some notes to improve UDF implementation:
1. let UDF to extend an interface;
2. keep one single method in a class;

takidau xumingming

Issue Links

• links to: GitHub Pull Request #3561