[XBEAN-274] Xbean finder is slow because of String.replaceFirst

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.0
• Fix Version/s: 4.1
• Component/s: finder
• Assignee: Mark Struberg
• Reporter: Mark Struberg
• Created: 07/Oct/14 06:44
• Updated: 07/Oct/14 06:48
• Resolved: 07/Oct/14 06:48

Description

JarArchive uses entry.getName().replaceFirst(".class$", "");

This is effectively a replacement of the last ".class" in the entry name.
This is pretty slow as replaceFirst internally creates a PatternMatcher.
By replacing this line with an endsWith + substring I ended up with 20% performance boost.
Overall in a real world application my OpenWebBeans boot time went down from 1020ms to 969ms.