I see Yonik recently opened an issue in JIRA to track the addition of pluggable functions (https://issues.apache.org/jira/browse/SOLR-356). Any chance this will be implemented soon? It would save users like me from having to hack the Solr source or write custom request handlers for trivial additions (e.g., adding a distance function), not to mention changes to downstream dependencies (e.g., solr-ruby). Perhaps a reflection-based approach would do the trick?
- Jon
