On Thursday 12 July 2007 14:50, Grant Ingersoll wrote: > That is off of the TermSpans class. BTQ (BoostingTermQuery) is > implemented to extend SpanQuery, thus SpanNearQuery isn't, w/o > modification, going to have access to these things. However, if you > look at the SpanTermQuery, you will see that it's implementation of > Spans is indeed the TermSpans class. So, I think you could cast to > it or handle it through instanceof. > > I am not completely sure here, but it seems like we may need an > efficient way to access the TermPositions for each document. That > is, the Spans class doesn't provide this and maybe it should > somehow. Again, I am just thinking out loud here.
SpanQueries can be nested, so the relationship between a span and a term position can also be one to many, not only one to one. For example a matching span in the Spans of a SpanNearQuery can be based on two matching (near enough to match) term positions. > > Thus, if we modified Spans to have the following methods: > > byte[] getPayload(byte[] data, int offset) > > boolean isPayloadAvailable() > > I think this would be useful. Perhaps this should be discussed on dev. And the same holds for the payloads, there many be more than one for a single Span. Regards, Paul Elschot > > Cheers, > Grant > > > On Jul 12, 2007, at 8:20 AM, Peter Keegan wrote: > > > I'm looking for Spans.getPositions(), as shown in > > BoostingTermQuery, but > > neither NearSpansOrdered nor NearSpansUnordered (which are the Spans > > provided by SpanNearQuery) provide this method and it's not clear > > to me how > > to add it. > > > > Peter > > > > On 7/11/07, Chris Hostetter <[EMAIL PROTECTED]> wrote: > >> > >> > >> : I'm now looking at using payloads with SpanNearQuery but I don't > >> see any > >> : clear way of getting the payload(s) from the matching span > >> terms. The > >> term > >> : positions for the payloads seem to be buried beneath SpanCells > >> in the > >> > >> Isn't Spans.start() and Spans.end() what you are looking for? > >> > >> > >> > >> > >> > >> -Hoss > >> > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: [EMAIL PROTECTED] > >> For additional commands, e-mail: [EMAIL PROTECTED] > >> > >> > > -------------------------- > Grant Ingersoll > Center for Natural Language Processing > http://www.cnlp.org/tech/lucene.asp > > Read the Lucene Java FAQ at http://wiki.apache.org/lucene-java/LuceneFAQ > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
