[CALCITE-5349] RelJson should support non-standard operators

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.33.0
• Component/s: core
• Labels: pull-request-available
• Assignee: TJ Banghart
• Reporter: TJ Banghart
• Created: 26/Oct/22 23:18
• Updated: 07/Feb/23 22:33
• Resolved: 27/Jan/23 00:59

Description

I am attempting to deserialize RexNodes that contain non-standard operators but RexJson#toOp only considers operators found in SqlStdOperatorTable: https://github.com/apache/calcite/blob/c945b7f49b99538748c871557f6ac80957be2b6e/core/src/main/java/org/apache/calcite/rel/externalize/RelJson.java#L780

For example, attempting to deserialize a JSON RexCall that includes the BigQuery only `DATE_FROM_UNIX_DATE` operator raises CalciteException: No operator for 'DATE_FROM_UNIX_DATE' with kind: 'OTHER_FUNCTION', syntax: 'FUNCTION' during JSON deserialization

Unless I am missing something, I don't believe the operator lookup is configurable or overridable.

Issue Links

• links to: GitHub Pull Request #2954