kasilak wrote on 2/17/17 6:35 PM:
Sharing the complete C code for search.c.
//To handle proximity queries
if( queryType[g_testProximity] )
{
Vector *terms = Vec_new(0);
Vec_Push(terms, (Obj*)query_str);
String *field_name = Str_newf("content");
pquery = (Query*)ProximityQuery_new(field_name, terms, 100);
^^^ that won't work if `terms` is not first analyzed. If your index uses
stemming or case normalization or anything else, then `terms` will not match
anything in the lexicon.
What I pointed at earlier in this thread is how the C QueryParser handles
phrases, which is very similar to what must happen for proximity. A proximity is
just a phrase with the positions in a range <= maxdistance.
Since the built-in QueryParser does not yet handle proximity syntax, you'd need
to detect that case and parse it out yourself.
Or better yet, patch the Lucy QueryParser to recognize the proximity syntax and
submit that back here as a pull request.
The relevant place to start looking is here:
https://github.com/apache/lucy/blob/master/core/Lucy/Search/QueryParser.c#L862
and look at the logic around `is_phrase`.
HTH,
pek
--
Peter Karman . https://peknet.com/ . https://keybase.io/peterkarman
