How to search events between two dates in WP?

Is there a hosted search solution like Swiftype Search or Relevanssi that can search a database and not just meta-data?

• I'm not sure how to ask that so let me explain as I'm sure the question isn't clear... I want a hosted search solution that can have data stored for listings that is NOT accessible by (visible to) visitors to the site.  When search engines crawl sites, the users can see the content of the site, and they can look at the source code to see meta-data. I'm looking for a way to associate other data with web pages that can't be accessed/seen by the users.  The purpose is to easily tweak search results by associating other data with listings that can't be seen.  For example, I have two pages for local restaurants and I want nightly events at each restaurant to influence the search results, without showing what the events are to users (through source code nor on site).  If Wednesday has a live event at one restaurant, the search results could/would favor that restaurant over the other.

• Answer:

  Searchify.com does this.  Rather than crawling, you add records (called "documents") to your search index using our API.  Then to implement your scoring requirements (where restaurants with more upcoming events rank higher), you would use a document variable, containing the number of upcoming events (which you would have to keep up-to-date using our API).  Then you would define a custom scoring function which combines the text relevance with the number of events to determine rank.  I am the founder of Searchify, so feel free to message me if I can clarify anything.