Hi Ramon, I think it is possible to accomplish this, although I do not know of any sample code to actually do this. I have experimented with this a little, but have not got as far as making a working example. I am not sure if my reasoning around this is 100% sound, but here is my thinking on this subject. Maybe others have some other ideas.
There are two parts to this, as I see it: 1) you need to have data to support this 2) you need to figure out a UI to display that data For the data, each level in the hierarchy has to have its own facet with a set of unique values. For example, say you have a hierarchy something like the following: pub-type (book, magazine, article) book-type (novel, biography, reference) magazine-type (news, home, hobby) article-type (medical, news, personal) Or whatever makes sense for your content. Your data needs to have every level of the hierarchy above it. So if you have magazine-type="news", it should also have pub-type="magazine". If your data supports this properly, then a publication with a pub-type="magazine" will always have a magazine-type="news". The code that generates the hierarchical facets would need knowledge of the hierarchy (or have to be able to run a query to gain knowledge of it). For each individual facet, you can use the search API to generate the facet (or use cts:element-values and/or the other lexicon APIs to generate your own), but I think you would have to do a different search for each level of the hierarchy. When you click on a facet, you would then generate the facets for the next level. So when you click on the book facet, you would then generate and display the facets for novel, biography, and reference. Hopefully that can give you some ideas. -Danny From: [email protected] [mailto:[email protected]] On Behalf Of Ramon Felciano Sent: Thursday, May 13, 2010 5:14 PM To: [email protected] Subject: [MarkLogic Dev General] Hierarchical facet support / examples in MarkLogic? Hi - I just attended my first MarkLogic user conference and liked the demos I saw, especially those that demonstrated the ability to build a faceted search application fully within MarkLogic. I'm looking to build a similar search-and-browse application for a document collection that is organized using tags from a very large hierarchical controlled vocabulary, and would like to use these tags as the basis for the faceted navigation. I was planning to use Lucene/Solr, but now am wondering whether I could do this largely within MarkLogic, but am getting stuck on how to auto-generate the facets within the UI. Are there any examples showing how to dynamically construct *hierarchical* faceted UIs all within ML (e.g. using XQuery)? Thanks, Ramon
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