Hi Peter,
Thanks a lot!
I tried the code you have mentioned below. But the program is throwing an
error.
My code looks as below -
my $queryparser = Search::Query->parser( dialect => 'Lucy');
my $proximity_query = $queryparser->parse( '"jakarta apache"~4');
print("$proximity_query\n");
my $lucy_proximity_query = $proximity_query->as_lucy_query(); # Error
occurring at this line
my $searcher = Lucy::Search::IndexSearcher->new(
index => $path_to_index,
);
my $hits = $searcher->hits(
query => $lucy_proximity_query,
offset => $offset,
num_wanted => $page_size,
);
Error -
No field specified for term ' jakarta apache' -- set a default_field in
Parser or Dialect at program_name.pl
I think my code is correct. I am not able to figure out the error.
Thank you.
On Thu, Jun 14, 2012 at 7:42 PM, Peter Karman <[email protected]> wrote:
> Saurabh Vasekar wrote on 6/14/12 7:02 PM:
> > Hello,
> >
> > Apache Lucene supports the Proimity Search queries. e.g. search query
> > "jakarta apache" ~10 would search for "apache" and "jakarta" within 10
> > words of each other in a document. Is the proximity search supported in
> > Lucy also? If it is not supported do I implement the query parser to
> > incorporate the proximity search? Also what other wildcard characters are
> > supported in apache Lucy? I assigned "*" to query string. Ideally it
> should
> > retrieve all the contents in the document. But it did not retrieve
> > anything. How should I assign the "*" to the query string so that it
> > retrieves the entire content.
> >
>
>
> http://search.cpan.org/dist/LucyX-Search-WildcardQuery/
> http://search.cpan.org/dist/Lucy/lib/LucyX/Search/ProximityQuery.pod
>
>
> The built-in Lucy QueryParser has no syntax for either of those. One
> example
> that does support wildcard and proximity syntax is:
>
> http://search.cpan.org/dist/Search-Query-Dialect-Lucy/
>
> So you could do (UNTESTED):
>
> my $queryparser = Search::Query->parser( dialect => 'Lucy' );
> my $everything_query = $queryparser->parse('?*');
> my $proximity_query = $queryparser->parse('"jakarta apache" ~10');
>
> my $lucy_everything_query = $everything_query->as_lucy_query();
> my $everything_hits = $lucy_searcher->hits( query =>
> $lucy_everything_query );
>
> my $lucy_proximity_query = $proximity_query->as_lucy_query();
> my $proximity_hits = $lucy_searcher->hits( query => $lucy_proximity_query
> );
>
> --
> Peter Karman . http://peknet.com/ . [email protected]
>
