On 1/17/15 8:55 AM, Gerald Richter wrote:
> Hi,
>
>
> I have defined a field in the following way:
>
>
> my $tokenizer = Lucy::Analysis::StandardTokenizer->new;
> my $normalizer = Lucy::Analysis::Normalizer->new (strip_accents => 1,
> case_fold => 1) ;
> my $field_analyzer = Lucy::Analysis::PolyAnalyzer->new
> (
> analyzers => [ $tokenizer, $normalizer ],
> );
> my $field_type = Lucy::Plan::FullTextType->new (analyzer =>
> $field_analyzer) ;
> $schema->spec_field( name => 'option_ndx', type => $field_type );
>
>
> When I now run a query (either with a TermQuery or a WildcardQuery), and the
> indexed document was "Foo baß", it works as long as I query for "foo", but
> not when I query for "Foo" or "baß". So I guess I have to run the query
> string thru the same analyzer as the indexer does.
>
>
> The question is how can I do this or is Lucy able to do this for me?
>
In addition to the good advice elsewhere on this thread, you can use the
Search::Query Lucy dialect to parse and analyze plain strings
appropriately, with code like this:
----------------------------------
use Lucy;
use Search::Query;
my ($idx, $query) = get_index_name_and_query();
my $searcher = Lucy::Search::IndexSearcher->new( index => $idx );
my $schema = $searcher->get_schema();
# build field mapping
my %fields;
for my $field_name ( @{ $schema->all_fields() } ) {
$fields{$field_name} = {
type => $schema->fetch_type($field_name),
analyzer => $schema->fetch_analyzer($field_name),
};
}
my $query_parser = Search::Query->parser(
dialect => 'Lucy',
croak_on_error => 1,
default_field => 'foo', # applied to "bare" terms with no field
fields => \%fields
);
my $parsed_query = $query_parser->parse($query);
my $lucy_query = $parsed_query->as_lucy_query();
my $hits = $searcher->hits( query => $lucy_query );
--------------------------------
Something similar is performed in Dezi::Lucy::Searcher:
https://metacpan.org/source/KARMAN/Dezi-App-0.013/lib/Dezi/Lucy/Searcher.pm#L124
See
https://metacpan.org/pod/Search::Query::Dialect::Lucy
--
Peter Karman . http://peknet.com/ . [email protected]
