If you're going to spend time mucking w/ TermPositions, you should just spend your time working with SpanQuery, as that is what I understand you to be asking about. AIUI, you want to be able to get at the positions in the document where the query matched. This is exactly what a SpanQuery and it's derivatives does. It does all the work that you would have to do yourself by using the TermPositions class.
On Mar 12, 2010, at 6:38 PM, MitchK wrote: > > Thank you both for your responses. > > However, I am not familiar enough with Solr and even not with Lucene. So, at > the moment, I have no real idea of what payloads are (I can't even translate > this word...). > The manual says something about "metadata" - but there is nothing said about > what metadata they mean. > I think that - looking at my little experiences with Lucene and Solr - it > would be a better idea to firstly read some stuff like "Lucene in Action", > before tryring to customize (or contribute to) Lucene/Solr at such a level. > > Do they currently work on the tickets? It seems like there was no more time > to do so?? > > Last but not least: I want to add something productive to my question: > The paper that maybe describes the solution for my problem... > > http://lucene.apache.org/java/3_0_1/fileformats.html#Positions > > To quote: > PositionDelta is, if payloads are disabled for the term's field, the > difference between the position of the current occurrence in the document > and the previous occurrence (or zero, if this is the first occurrence in > this document). > > If I could retrive the given information, this would be great - even if it > forces me to iterate over the document where the term occurs. Lucene's > TermPositions-Class seems to be a good place to start, doesn't it??? What do > you think? [1] > > Integrating some Lucene-based work to Solr is another question...I think one > needs to have a map, where one can see which class is usually called by > which class, but that is really another topic :). > > [1] > http://lucene.apache.org/java/3_0_1/api/all/org/apache/lucene/store/instantiated/InstantiatedTermPositions.html > > Thank you! > - Mitch > -- > View this message in context: > http://old.nabble.com/How-to-get-Term-Positions--tp27880551p27884130.html > Sent from the Solr - User mailing list archive at Nabble.com. > -------------------------- Grant Ingersoll http://www.lucidimagination.com/ Search the Lucene ecosystem using Solr/Lucene: http://www.lucidimagination.com/search
