[FLINK-24462] Refactor casting rules in a similar fashion to DataStructureConverter

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.15.0
• Component/s: Table SQL / Planner
• Labels: pull-request-available
• Assignee: Francesco Guardiani
• Reporter: Francesco Guardiani
• Created: 06/Oct/21 13:39
• Updated: 29/Oct/21 08:30
• Resolved: 29/Oct/21 08:30

Description

The goal of this issue is to reorganize CAST logic in rules, similarly to DataStructureConverter. This makes the casting rules easier to debug and extend, allows us to reuse some of the rules for https://issues.apache.org/jira/browse/FLINK-21456 without duplicating any code and simplifies/cleanups the code generator code base. These rules can be reused in the context of https://issues.apache.org/jira/browse/FLINK-24385 as well.

Issue Links

• links to: GitHub Pull Request #17522