Le Samedi 13 Janvier 2007 10:49, Melange a écrit : > Hello, I'd like to index a web forum (phpBB) with Lucene. I wonder how to > best map the forum document model (topics and their messages) to the Lucene > document model. > > Usually, some forum member creates a new topic with its first message text, > then other members add reply messages to that topic. Messages are sometimes > updated, but most of the time topics grow incrementally. There's no limit > for the number of replies, thousands is nothing unusual. > > Currently, I see two options for my Lucene data model: A single document > type or two document types (one for the topics and one for the messages). > When using only a single document type, things are fairly clear but there > would obviously be a lot of unneccessary index modifications (their would > be one field with all messages concatenated). To reduce the amount of index > updates, the separation of topics and messages seems to be the right thing > to do. > > So I'd like to use two document types for my document model, but I do not > understand how I could bring these two together when searching. I don't > want to list all messages but I want the messages grouped by topic, how can > I go about that? > > The topic documents could be boosted, but perhaps that's not even necessary > because of their relativly short length (compared to message documents).
Hi Melange, The two document types design will be only usefull if you want to search for topics and search for messages. Here you want to search for messages grouped by topic. So you should have one kind of document : message documents. In this message docment, you will refer the topic's id, so you will be able to group by topic. To group by topic some search results, you might be interested by Solr's [1] faceted search [2]. cheers, Nicolas [1] http://incubator.apache.org/solr/ [2] http://wiki.apache.org/solr/SimpleFacetParameters --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
