Hello, I'm trying to find out how Solr runs a query for "*foo*". Google tells me that you need to use NGramFilterFactory for that kind of substring search, but I find that even with very simple fieldTypes, it just works. (Perhaps because I'm testing on very small data sets, Solr is willing to look through all the keywords.) e.g. This works on the tutorial.
Can someone tell me exactly how this works and/or point me to the Lucene code that implements this? Thanks, Scott
