Question

I’ve found how to sort query results by a given field in a Lucene.Net index instead of by score; all it takes is a field that is indexed but not tokenized. However, what I haven’t been able to figure out is how to sort that field while ignoring stop words such as ‘a’ and ‘the’, so that the following book titles, for example, would sort in ascending order like so:

1. The Cat in the Hat
2. Horton Hears a Who

Is such a thing possible, and if yes, how?

I’m using Lucene.Net 2.3.1.2.

Answer 1

I wrap the results returned by Lucene into my own collection of custom objects. Then I can populate it with extra info/context information (and use things like the highlighter class to pull out a snippet of the matches), plus add paging. If you took a similar route you could create a ‘result’ class/object, add something like a SortBy property and grab whatever field you wanted to sort by, strip out any stop words, then save it in this property. Now just sort the collection based on that property instead.