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
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
SQL Server FTS is going to be easier to manage for a small deployment. Since FTS is integrated with the DB, the RDBMS handles updating the index automatically. The con here is that you don’t have an obvious scaling solution short of replicating DB’s. So if you don’t need to scale, SQL Server FTS is … Read more
While they were no ‘full blown’ releases (i.e. full documentation, web site updates) of Lucene.Net for quite some time, there are still fresh commits to its SVN repository. The latest release (2.3.2) for example was tagged in 07/24/09 (see here). Since the development is still active I would use it for new full-text-search projects.
-field:[* TO *] In SolrNet, use a negated SolrHasValueQuery
Lucene: Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search Solr: Solr is an open source enterprise search server based on the Lucene Java search library, with XML/HTTP and JSON APIs, hit highlighting, faceted search, caching, replication, … Read more
Yes, I’ve used it for exactly what you are describing. We had two services – one for read, and one for write, but only because we had multiple readers. I’m sure we could have done it with just one service (the writer) and embedded the reader in the web app and services. I’ve used lucene.net … Read more
The answers you are looking for really can not be found using lucene alone. You need ranking and grouping algorithms to filter and understand the data and how it relates. Lucene can help you get normalized data, but you need the right algorithm after that. I would recommend you check out one or all of … Read more