[CALCITE-4123] Make EnumerableMergeJoin constructor protected

• Type: Task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.24.0
• Component/s: core
• Labels: pull-request-available
• Assignee: Ruben Q L
• Reporter: Ruben Q L
• Created: 15/Jul/20 14:08
• Updated: 25/Jul/20 15:00
• Resolved: 15/Jul/20 16:14

Description

Minor improvement.

EnumerableMergeJoin should have a protected constructor (instead of package private), in case downstream projects require to extend it.

This is already the case with other join operators, which provide a protected constructor, e.g.: EnumerableHashJoin, EnumerableNestedLoopJoin, EnumerableBatchNestedLoopJoin.

Issue Links

• links to: GitHub Pull Request #2067