I think your use case is the one described in LUCENE-5350, maybe you want to take a look to the patch and comments there.
Tomás On Wed, Jan 15, 2014 at 12:58 PM, Hamish Campbell < hamish.campb...@koordinates.com> wrote: > Hi all, > > I'm looking into options for filtering the search suggestions dictionary. > > Using Solr 4.6.0, Suggester component and fst.FuzzyLookupFactory using a > field based dictionary, we're indexing records for a multi-tenanted SaaS > platform. SearchHandler records are always filtered by the particular > client warehouse (e.g. by domain), however we need a way to apply a similar > filter to the spell check dictionary to prevent leaking terms between > clients. In other words: when client A searches for a document title they > should not receive spelling suggestions for client B's document titles. > > This has been asked a couple of times, on the mailing list and on > StackOverflow. Some of the suggested approaches: > > 1. Use dynamic fields to create dictionaries per-warehouse (mentioned here: > > http://lucene.472066.n3.nabble.com/Filtering-down-terms-in-suggest-tt4069627.html > ) > > That might be a reasonable option for us (we already considered a similar > approach), but at what point does this stop scaling efficiently? How many > dynamic fields are too many? > > 2. Run a query to populate the suggestion list (also mentioned in that > thread) > > If I understand this correctly, this would give us a lot of flexibility and > power: for example to give a more nuanced result set using the users > permissions to expose private documents in their spelling suggestions. > > I expect this would be a slow query, but our total document count is > currently relatively small (on the order of 10^3 objects) and I imagine you > could create a specific word index with the appropriate fields to keep this > in check. Is this a feasible approach, and if so, how do you build a > dynamic suggestion list? > > 3. Other options: > > It seems like this is a common problem - and we could through some > resources at building an extension to provide some limited suggestion > dictionary filtering. Is anyone already doing something similar, or has > found a clever hack around this, or can suggest a starting point? > > Thanks everyone! > > -- > Hamish Campbell > Koordinates Ltd <http://koordinates.com/?_bzhc=esig> > PH +64 9 966 0433 > FAX +64 9 966 0045 >
