lucene-opennlp-lemmatizer-fix

This project packages the LUCENE-10171 fix as a separate project, until it's resolved/merged upstream.

To use this in existing Solr installations:

• Build the project mvn clean package
• Copy the generated target/opennlp-lemmatizer-fix-1.0.jar to Solr's lib directory
• replace any instances of solr.OpenNLPLemmatizer with org.apache.lucene.analysis.opennlp.fix.OpenNLPLemmatizerFilterFactory
  • eg: <filter class="solr.OpenNLPLemmatizerFilterFactory" lemmatizerModel="en-lemmatizer.bin" dictionary="lemmas.txt"/>
  • becomes: <filter class="org.apache.lucene.analysis.opennlp.fix.OpenNLPLemmatizerFilterFactory" lemmatizerModel="en-lemmatizer.bin" dictionary="lemmas.txt"/>
• restart Solr