: 1) Is multi-word synonyms possible now in Solr? For example, can I have : things like synonyms like: : "I.T. & T", "IT & T", "Information Technologies", "Computer science"
multi word synonyms are possible, but the only clean way to do it at index time using expansion. there is a note about this on in the docs.. http://wiki.apache.org/solr/AnalyzersTokenizersTokenFilters#SynonymFilter : needs to be done. Can I use the synonyms config above to do facet query on : category field and the Solr will combine items having one of these category : into one facet category? For example: hmmm... if you want to facet on a field like this then you really want to use synonym reduction (expand="false") which contridicts the general solution for multi-word synonyms ... but frankly if you are faceting it sounds like you want to use something like the KeywordTOkenizer anyway, in which case your multi-word synonyms aren't really multi-word so it should be okay. but honestly i haven't relaly tried anything like this ... the code for parsing the synonyms.txt file probaly splits the individual synonyms on whitespace to prodce multiple tokens which might screw you up ... you may need to get creative (perhaps use a PatternReplaceFilter to encode your spaces as "_" before hte SynonymFilter and then another one to convert the "_" back to " " after the Synonym filter ... kludgy but it might work) : Now I want create a link for each of these value so that the user can filter : the results by that title by clicking on the link. For example, if I click : on "Software Engineer", the results are now narrowed down to just include : records with "Software Engineer" in their title. Since "title" field can : contain special chars like '+', '&' ..., I really can't find a clean way to : do this. At the moment, I replace all the space by '+' and it seems to work : for words like "Software engineer" (converted to "Software+Engineer"). : However, "C++ Programmer" is converted to "C+++Programmer", and it doesn't : seem to work (return no results). Any ideas? for starters you need to URL encode *all* of hte characters, not just the spaces ... space escapes to "+" but only becuase "+" escapes to %2B. second, if you are dealing with multi-word values like this in your facets, you need to make sure to quote them when doing fq queries to (before url encoding) ... so if you have a facet.field "skills" that lists "C++ Programmer" as the value, the fq query you want to use would be... skills:"C++ Programmer" when you URL encode that it should become... fq=skills%3A%22C%2B%2B+Programmer%22 ...use teh echoParams=explicit&debugQuery=true params to see exactly what your params look like when they've been URL decoded and what your query objects look like once they've been parsed. -Hoss
