Recently i am working on a problem like this too. I couldn’t find any formal documentation about this issue but when i investigate the results with “explain api”, it seems like “queryNorm” is not applied to the score directly coming from “functions” field. This means that you can not directly normalize script value. However, i … Read more
A very late reply, but it might be useful for somebody else later: *:* AND NOT country:sweden IF I’m not mistaken this should do a logical “AND” with all documents and the documents with a country that is different from “sweden”.
Yo can make Lucene ignore the special characters by sanitizing the query with something like query = QueryParser.Escape(query) If you do not want your users to ever use advanced syntax in their queries, you can do this always. If you want your users to use advanced syntax but you also want to be more forgiving … Read more
thinking_sphinx and sphinx work beautifully, no indexing, query, install problems ever (5 or 6 install, including production slicehost ) why doesn’t everybody use sphinx, like, say craigslist? read here about its limitations (year and a half old articles. The sphinx developer, Aksyonoff, is working on these and he’s putting in features and reliability and stamping … Read more
You have various problems with what you pasted: 1) Incorrect mapping When creating the index, you specify: “mappings”: { “files”: { But your type is actually file, not files. If you checked the mapping, you would see that immediately: curl -XGET ‘http://127.0.0.1:9200/files/_mapping?pretty=1’ # { # “files” : { # “files” : { # “properties” : … Read more
Technically you can do full text search with MongoDB, but you’re missing out on a lot that a full text search provider has to offer. I love MongoDB, but I’d couple it with a full text search provider (such as Lucene or Sphinx) if time to implementation is at all a concern. I think MongoDB’s … Read more
You can also check out ifilters – there are a number of resources if you do a search for asp.net ifilters: http://www.codeproject.com/KB/cs/IFilter.aspx http://en.wikipedia.org/wiki/IFilters http://www.ifilter.org/ https://stackoverflow.com/questions/1535992/ifilter-or-sdk-for-many-file-types Of course, there is added hassle if you are distributing this to client systems, because you will either need to include the ifilters with your distribution and install those with … Read more
If you’re going to work with Lucene, I’d buy a good book that covers it from A to Z. Lucene has a very steep learning curve (in my opinion). It’s not only knowing how to search your that’s important – it’s also about indexing it. Doing a basic search is easy, but creating an index … Read more
There are 3 ways to do this. The first way is to construct a query manually, this is what QueryParser is doing internally. This is the most powerful way to do it, and means that you don’t have to parse the user input if you want to prevent access to some of the more exotic … Read more