[KinoSearch] error when query parser has no fields specified

[Mike Barborak]

Hello,

I'm new to KinoSearch 0.162 and am having a small problem I hope someone can
help me out with. I've created my index and am now querying it. My problem
is that if I query (script below) without setting the fields option in the
KinoSearch::QueryParser::QueryParser constructor, I get an error (below with
stack trace) and no search results. If I add the fields option, I get no
errors and the correct search results. From the examples, I understood that
the fields option was not required but if it is, is their a public API to
get the list of fields in an index?

Thanks,
Mike

use KinoSearch::Searcher;
use KinoSearch::Analysis::PolyAnalyzer;
use KinoSearch::Search::QueryFilter;
use KinoSearch::Search::TermQuery;
use KinoSearch::QueryParser::QueryParser;

my $analyzer = KinoSearch::Analysis::PolyAnalyzer->new( language => 'en' );

my $searcher = KinoSearch::Searcher->new(
    invindex => 'search',
    analyzer => $analyzer,
);

my $query_parser = KinoSearch::QueryParser::QueryParser->new(
        analyzer => $analyzer,
#        fields   => [ 'Event_title' ],
        default_boolop => 'AND',
    );

my $query = $query_parser->parse( lc ( $ARGV[0] ) );

my $hits = $searcher->search( query => $query );
while ( my $hit = $hits->fetch_hit_hashref ) {
    print "$hit->{__id}\n";
}

here at C:/Tools/perl/site/5.8.8/lib/KinoSearch/Index/FieldInfos.pm line 78

KinoSearch::Index::FieldInfos::get_field_num('KinoSearch::Index::FieldInfos=HASH(0x31e265c)',
'undef') called at C:/Tools/perl/site/5.8.8/lib/KinoSearch/Index/Term.pm
line 38

KinoSearch::Index::Term::get_termstring('KinoSearch::Index::Term=HASH(0x320bb2c)',
'KinoSearch::Index::FieldInfos=HASH(0x31e265c)') called at
C:/Tools/perl/site/5.8.8/lib/KinoSearch/Index/TermInfosReader.pm line 57

KinoSearch::Index::TermInfosReader::fetch_term_info('KinoSearch::Index::TermInfosReader=HASH(0x3206ad0)',
'KinoSearch::Index::Term=HASH(0x320bb2c)') called at
C:/Tools/perl/site/5.8.8/lib/KinoSearch/Index/SegReader.pm line 150

KinoSearch::Index::SegReader::doc_freq('KinoSearch::Index::SegReader=HASH(0x2cc01b8)',
'KinoSearch::Index::Term=HASH(0x320bb2c)') called at
C:/Tools/perl/site/5.8.8/lib/KinoSearch/Searcher.pm line 135

KinoSearch::Searcher::doc_freq('KinoSearch::Searcher=HASH(0x31e1d20)',
'KinoSearch::Index::Term=HASH(0x320bb2c)') called at
C:/Tools/perl/site/5.8.8/lib/KinoSearch/Search/Similarity.pm line 28

KinoSearch::Search::Similarity::idf('KinoSearch::Search::Similarity=SCALAR(0x31e1ce4)',
'KinoSearch::Index::Term=HASH(0x320bb2c)',
'KinoSearch::Searcher=HASH(0x31e1d20)') called at
C:/Tools/perl/site/5.8.8/lib/KinoSearch/Search/TermQuery.pm line 66

KinoSearch::Search::TermWeight::init_instance('KinoSearch::Search::TermWeight=HASH(0x320bd60)')
called at C:/Tools/perl/site/5.8.8/lib/KinoSearch/Util/Class.pm line 31
        KinoSearch::Util::Class::new('KinoSearch::Search::TermWeight',
'parent', 'KinoSearch::Search::TermQuery=HASH(0x320bba4)', 'searcher',
'KinoSearch::Searcher=HASH(0x31e1d20)') called at
C:/Tools/perl/site/5.8.8/lib/KinoSearch/Search/TermQuery.pm line 25

KinoSearch::Search::TermQuery::create_weight('KinoSearch::Search::TermQuery=HASH(0x320bba4)',
'KinoSearch::Searcher=HASH(0x31e1d20)') called at
C:/Tools/perl/site/5.8.8/lib/KinoSearch/Search/Query.pm line 44

KinoSearch::Search::Query::to_weight('KinoSearch::Search::TermQuery=HASH(0x320bba4)',
'KinoSearch::Searcher=HASH(0x31e1d20)') called at
C:/Tools/perl/site/5.8.8/lib/KinoSearch/Searcher.pm line 140

KinoSearch::Searcher::create_weight('KinoSearch::Searcher=HASH(0x31e1d20)',
'KinoSearch::Search::TermQuery=HASH(0x320bba4)') called at
C:/Tools/perl/site/5.8.8/lib/KinoSearch/Search/Hits.pm line 39

KinoSearch::Search::Hits::init_instance('KinoSearch::Search::Hits=HASH(0x320bc94)')
called at C:/Tools/perl/site/5.8.8/lib/KinoSearch/Util/Class.pm line 31
        KinoSearch::Util::Class::new('KinoSearch::Search::Hits', 'searcher',
'KinoSearch::Searcher=HASH(0x31e1d20)', 'query',
'KinoSearch::Search::TermQuery=HASH(0x320bba4)', 'filter', 'undef',
'num_docs', 'undef', ...) called at
C:/Tools/perl/site/5.8.8/lib/KinoSearch/Searcher.pm line 79
        KinoSearch::Searcher::search('KinoSearch::Searcher=HASH(0x31e1d20)',
'query', 'KinoSearch::Search::TermQuery=HASH(0x320bba4)') called at
search.pl line 22
Use of uninitialized value in exists at
C:/Tools/perl/site/5.8.8/lib/KinoSearch/Index/FieldInfos.pm line 80.
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