You should split the strings at the comma yourself and store the values in a multivalued field? Then wildcard search like A1_* are not a problem. I don't know so much about facets. But if they work on multivalued fields that should be then no problem at all.
Uwe 2009/7/1 Ben <b...@autonomic.net> > Yes, I had done that... however, I'm beginning to see now that what I am > doing is called a "wildcard query" which is going via Lucene's queryparser. > Lucene's query parser doesn't not support the regexp idea of character > exclusion ... i.e. I'm not trying to match "[" I'm trying to express "Match > as many characters as possible, which are not underscores" with [^_]* > > Perhaps I'm going about my whole problem in an ineffective way, but I'm not > sure how I can sensibly describe what I'm doing without it becoming a long > document. > > The only other approach I can think of is to change what I'm indexing but > I'm not sure how to achieve that. > I've tried explaining it once, and obviously failed, so I'll try again. > > I'm given a string containing many vectors (where each dimension is > separated by an underscore, and each vector is seperated by a comma) e.g. > > A1_B1_C1_D1,A2_B2_C2_D2,A3_B3_C3_D3 > > I want my facet query to tell me if, within one of the vectors within that > string, there is a match for dimensions I'm interested in. Of the four > dimensions in this example, I may choose to fix an arbitrary number of them > with values, and the rest with wildcards e.g. I might look for a facet > containing Ox_*_*_* so one of the vectors in the string must have its first > dimension matching "Ox" and I don't care about the rest. > > ***Is there a way to break down this string on the comma's so that I can > apply a normal wildcard query and SOLR applies it to each individually?*** > That would solve all my problems : > e.g. > The string is internally represented in lucene/solr as > A1_B1_C1_D1 > A2_B2_C2_D2 > A3_B3_C3_D3 > > where it tries to match the wildcard query on each in turn? > > Thanks for you help, I'm deeply confused about this at the moment... > > Ben >
