[FLINK-6938] IterativeCondition should support RichFunction interface

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.8.0
• Component/s: Library / CEP
• Labels: pull-request-available
• Assignee: Dian Fu
• Reporter: Jark Wu
• Created: 16/Jun/17 14:33
• Updated: 21/Jan/19 12:07
• Resolved: 28/Nov/18 14:06

Description

In FLIP-20, we need IterativeCondition to support an open() method to compile the generated code once. We do not want to insert a if condition in the filter() method. So I suggest make IterativeCondition support RichFunction interface.

Things to be very careful about:

• backwards compatibility (we previously serialized conditions) - changes to those interfaces have to be done carefully
• we want to be able to add dynamic patterns in the future, so at some point we have to open also on control message arrival

Issue Links

• blocks: FLINK-10597 Enable UDFs support in MATCH_RECOGNIZE
• is blocked by: FLINK-6939 Not store IterativeCondition with NFA state
• links to: GitHub Pull Request #4145
• links to: GitHub Pull Request #4145
• links to: GitHub Pull Request #4513
• links to: GitHub Pull Request #4513