[SOLR-5401] In Solr's ResourceLoader, add a check for @Deprecated annotation in the plugin/analysis/... class loading code, so we print a warning in the log if a deprecated factory class is used

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.6, 4.5
• Fix Version/s: 4.6, 6.0
• Component/s: Schema and Analysis
• Assignee: Uwe Schindler
• Reporter: Uwe Schindler
• Created: 29/Oct/13 17:30
• Updated: 30/Jan/19 06:50
• Resolved: 30/Oct/13 14:59

Description

While changing an antique 3.6 schema.xml to Solr 4.5, I noticed that some factories were deprecated in 3.x and were no longer available in 4.x (e.g. "solr._Language_PorterStemFilterFactory"). If the user would have got a notice before, this could have been prevented and user would have upgraded before.

In fact the factories were @Deprecated in 3.6, but the Solr loader does not print any warning. My proposal is to add some simple code to SolrResourceLoader that it prints a warning about the deprecated class, if any configuartion setting loads a class with @Deprecated warning. So we can prevent that problem in the future.

Issue Links

• breaks: SOLR-5404 Fix solr example config to no longer use deprecated stuff