Payloads are used to set boosts for tokens. Have a look at the PayloadTermQuery. There is a patch for support in Solr, but it isn't committed yet.
-Grant On Apr 15, 2010, at 8:46 AM, m...@gjgt.sk wrote: > Yes, I considered creating own analyzer with a set of filters. Trouble is, > that I wouldn't be able to set different boosts for the tokens created by > the filters(filters need to create additional token to the input one and > set a lower boost for it), which is kind of crucial funcionality. Even the > tokenizer at the beginning of the process needs to set different boosts to > different tokens produced. As far as I know, it is possible to set boosts > only to Fields though. > This is now more of a discussion for the Lucene lists, I guess. > > Thanks for the replies anyway. > > Martin > >> (perhaps more appropriate on solr-user@) >> >> It sounds like you want to make a MathML filter? Check out the >> analyzer packages... >> >> http://wiki.apache.org/solr/AnalyzersTokenizersTokenFilters >> >> simple example: >> https://svn.apache.org/repos/asf/lucene/dev/trunk/solr/src/java/org/apache/solr/analysis/LengthFilterFactory.java >> >> ryan >> >> >> 2010/4/14 <m...@gjgt.sk>: >>> Hello everybody, >>> >>> I'm new to all this so I hope this isn't too noob a question and that it >>> isn't very inappropriate here. >>> >>> I'm currently working on a indexing/searching application based on >>> Apache >>> Lucene core, that can process mathematical formulae in MathML format >>> (which is extension to XML) and store it in the index for searching. No >>> troubles here, since I'm making everything above Lucene. >>> >>> But I started to think it would be nice to write this mathematical >>> extension so it could be incorporated into Solr as easy as possible in >>> the >>> future. The thing is I looked into Solr's sources and I'm all confused >>> to >>> be honest and don't know which way to do this. >>> >>> Basic workflow of the whole math processing would be: >>> Check the input document for any math->if found, mathematical unit needs >>> to process it and produce many string-represented formulae with >>> different >>> boosts->put these into index not tokenized furthermore. >>> >>> That's about it. >>> Any ideas? Any help will be appreciated. >>> >>> Thank you >>> >>> Martin >>> >>> >> > > -------------------------- Grant Ingersoll http://www.lucidimagination.com/ Search the Lucene ecosystem using Solr/Lucene: http://www.lucidimagination.com/search
