[JCR-4541] reduce classpath lookups for SaxParserFactory

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.14.9, 2.20.1, 2.22, 2.21.1, 2.18.6, 2.16.7
• Component/s: jackrabbit-jcr-commons, jackrabbit-jcr2spi
• Labels: performance
• Flags: Patch
• Assignee: Julian Reschke
• Reporter: Lars Grefer
• Created: 30/Mar/20 13:00
• Updated: 03/May/21 06:04
• Resolved: 04/May/20 12:20

Description

While profiling our application, I noticed that org.apache.jackrabbit.commons.xml.ParsingContentHandler#parse creates a new SAXParserFactory instance on every invocation.

This is quite expensive because SAXParserFactory.newInstance() internally scans the whole classpath for META-INF/services/ declarations.

I therefore propose this patch: https://github.com/apache/jackrabbit/pull/90