[CALCITE-5153] Create an immutable version of ListSqlOperatorTable

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.31.0
• Assignee: Julian Hyde
• Reporter: Julian Hyde
• Created: 13/May/22 17:56
• Updated: 22/Sep/23 20:49
• Resolved: 01/Jun/22 22:15

Description

Create an immutable version of class ListSqlOperatorTable, to be created via SqlOperatorTables.of(operatorList) or SqlOperatorTables.of(operator, ...).

class ListSqlOperatorTable still exists but its constructors and add(SqlOperator) methods are deprecated. We hope that people will create immutable operator tables most of the time.

Refactor MockSqlOperatorTable to be immutable. Methods that mutate the table, such as addRamp, are replaced by methods that return a copy.

Issue Links

• is related to: CALCITE-6024 A more efficient implementation of SqlOperatorTable, backed by an immutable multi-map keyed by upper-case operator name
• links to: dev branch