Hey there, I have a had quite a couple of usecases where I had to change some tiny things in basic queries like BooleanQuery. I subclassed those queries and applied the change - no problem so far. But I wanted lucene to use this modified query everywhere in other queries and (for sure) in the query parser. The query parser integration was easy - subclassed it and override new*Query() methods. The rest of lucene was a nightmare and I eventually used a source distribution and changed it in the actual implementation - don't comment this, I hate it! I thought about this topic for a while and want to throw it out to the list for discussion.
I would really appreciate to see some kind of factory methods used for query construction for instance in the Query#rewrite() implementations as well as in the QueryParser classes. Such a factory could be user provided or by default simple call the constructor of the target class. A patch for this would not break and backwards compat. afaik and could help quite a couple of people out there I guess. simon --------------------------------------------------------------------- To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org
