[CALCITE-2897] Reduce expensive calls to Class#getSimpleName

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.18.0
• Fix Version/s: 1.19.0
• Component/s: core
• Labels: pull-request-available
• Assignee: Stamatis Zampetakis
• Reporter: Stamatis Zampetakis
• Created: 06/Mar/19 10:16
• Updated: 25/Mar/19 00:11
• Resolved: 06/Mar/19 14:37

Description

Class#getSimpleName method performs string manipulation operations, among other things, which has a noticable impact on performance when called repeatedly. In various cases the calls to this method can be avoided easily by using precomputed fields.

One place where this method really affects performance is in RuleQueue#addMatch.

Issue Links

• links to: GitHub Pull Request #1090