Thanks Hoss, I was mainly looking for an explanation of such an answer only coz in the forum there were such replies posted for Hierarchical faceting. I'll try out the method.
Thanks. Sachit -----Original Message----- From: Chris Hostetter [mailto:[EMAIL PROTECTED] Sent: Sunday, October 26, 2008 11:43 PM To: solr-user@lucene.apache.org Subject: Re: Hierarchical Faceting : Suppose, I have 3 categories like politics, science and sports. In the : schema, I am defining a field type called 'Category'. I don't have a sub : category field type (and don't want to have one). Now, Cricket and : Football are some categories which can be considered to be under sports. : When I search for something and if it is present in the 'sports' : category, then it should show me the facets of cricket and football too. : My question is: Do I need to specify cricket, football also as : categories or sub categories of sports (for which I don't want to make a : separate field)? And if I make these as categories only, then how will I : achieve the drilling down of the data to cricket or football. there are lots of solutions to problems like this, but picking the best one tends to depend on what exactly you wnat the search experience to be like. based on your description of your problem, an approach where you index all of the "ancestor breadcrumbs" for hte categories a document is in along with the "depth" of each ancestor in the tree, and then facet on those with a prefix restriction would probably work well. ie: docA: cat = sport/cricket docB: cat = sport/shateboarding docC: cat = sport/skateboarding/vert docD: cat = sport/skateboarding/street docE: cat = finance tokens indexed.... docA: cat = 0/sport, 1/sport/cricket docB: cat = 0/sport, 1/sport/shateboarding docC: cat = 0/sport, 1/sport/skateboarding, 2/sport/skateboarding/vert docD: cat = 0/sport, 1/sport/skateboarding, 2/sport/skateboarding/street docE: cat = 0/finance so now your first request you use something like... q=foobar&facet=true&facet.field=cat&f.cat.facet.prefix=0/ ..and you'll get facet counds for sport and finance. if they pick "sport" your next request is something like... q=foobarfq=cat:0/sport&facet=true&facet.field=cat&f.cat.facet.prefix=1/sport/ ...and you'll get facet counds for all the subcats of sport ... etc. -Hoss This message (including attachment if any) is confidential and may be privileged. If you have received this message by mistake please notify the sender by return e-mail and delete this message from your system. Any unauthorized use or dissemination of this message in whole or in part is strictly prohibited. E-mail may contain viruses. Before opening attachments please check them for viruses and defects. While MindTree Limited (MindTree) has put in place checks to minimize the risks, MindTree will not be responsible for any viruses or defects or any forwarded attachments emanating either from within MindTree or outside. Please note that e-mails are susceptible to change and MindTree shall not be liable for any improper, untimely or incomplete transmission. MindTree reserves the right to monitor and review the content of all messages sent to or from MindTree e-mail address. Messages sent to or from this e-mail address may be stored on the MindTree e-mail system or else where.
