Hi, Thank you for the answer. Very helpful.
Regards, Thibault. On Wed, 09 Sep 2009 13:36:02 +0200 Uri Boness <ubon...@gmail.com> wrote: > Hi, > > This is a bit tricky but I think you can achieve it as follows: > > 1. have a field called "location_facet" which holds the logical path of > the location for each address (e.g. /Eurpoe/England/London) > 2. have another multi valued filed "location_search" that holds all the > locations - your "catchall" field. > 3. When the user searches for "England", perform the search on the > "location_search" field. > 4. Always facet on the "location_facet" field > 5. When you get the response, drop the most common prefix from all the > facet values, so for example if you search on "England": > > returned facets: > > /Europe/England/London..............5 > /Europe/England/Manchester........6 > /Europe/England/Liverpool...........3 > > after dropping the common prefix (which is /Europe/England): > > London............5 > Manchester.....6 > Liverpool........3 > > note that theoretically (and perhaps even realistically) you might also > have multiple prefixes (for example, in the US you can definitely have > several cities with the same name in different states), in which case > you'd probably want to group these results by the prefix: > > (for the sake of the argument, let's assume there's an "England" state > in the US :-)) > > /Europe/England > London............5 > Manchester......6 > Liverpool.........3 > > /North America/USA/England > AnotherCity..........10 > > On the client side, when the user clicks on one of the facet values, you > should use value path as a wildcard filter on the "location_facet" > field. For example, if the user click on London (the city in England), > the you should add the following filter: > > location_facet:/Europe/England/London/* > > this is a bit of manual work to do on the results, but I think it should > work, but maybe someone has a better idea on how to do it in a cleaner way. > > cheers, > Uri > > thibault jouannic wrote: > > Hi Solr users, > > > > This is my first post on this list, so nice to meet you. > > > > I need to do something with solr, but I have no idea how to achieve this. > > Let me describe my problem. > > > > I'm building an address search engine. In my Solr schema, I've got many > > fields like «country», «state», «town», «street». > > > > I want my users to search an address by location, so I've set up a catchall > > field containing a copy of all the other fields. This is my default search > > field. > > > > I want to propose a dynamic facet search : if a user searches for the term > > «USA», the used facet.field will be «state», but if he searches for > > «Chicago», facet.field will be «street». If a user is searching for an > > address in Chicago, it would be stupid to propose a facet search on the > > «country» field, would'nt it? > > > > However, how can I know which field is matched ? If the user search > > «France», how can I know if this is a country or a town ? > > > > Is anybody has an idea? > > > > Best regards, > > Thibault. > > > > > >
