Lower level query interface

A more advanced query interface is something that lunr definitely needs. I’m not entirely sure what the interface would look like for this, perhaps a different method on the index and a query object itself:

idx.query(function () {
    this.all('foo bar*') // these are AND query terms
    this.some('*baz') // these are OR query terms

    this.limit(10) // maximum number of results to return
    this.threshold(0.7) // minimum score for returned documents

    this.facet('herp', ['derp', 'burp']) // facets and values
})

This is just a very rough idea, but I think it is the right direction. It hopefully exposes a more powerful interface to the search. The idx.search method would still exist as a quick way to perform searches, but it would probably be built onto of this query method.

Any input or feedback is much appreciated.

[brockfanning]

This seems great! Would love to have facets!

[olivernn]

It turned out differently the described in this issue, but the latest version of Lunr does provide more control over performing queries.