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.\" ========================================================================
.\"
.IX Title "KinoSearch::Searcher 3"
.TH KinoSearch::Searcher 3 "2006-12-27" "perl v5.8.8" "User Contributed Perl Documentation"
.SH "NAME"
KinoSearch::Searcher \- execute searches
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 3
\&    my $analyzer = KinoSearch::Analysis::PolyAnalyzer->new( 
\&        language => 'en',
\&    );
.Ve
.PP
.Vb 5
\&    my $searcher = KinoSearch::Searcher->new(
\&        invindex => $invindex,
\&        analyzer => $analyzer,
\&    );
\&    my $hits = $searcher->search( query => 'foo bar' );
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Use the Searcher class to perform queries against an invindex.  
.SH "METHODS"
.IX Header "METHODS"
.Sh "new"
.IX Subsection "new"
.Vb 4
\&    my $searcher = KinoSearch::Searcher->new(
\&        invindex => $invindex,
\&        analyzer => $analyzer,
\&    );
.Ve
.PP
Constructor.  Takes two labeled parameters, both of which are required.
.IP "\(bu" 4
\&\fBinvindex\fR \- can be either a path to an invindex, or a
KinoSearch::Store::InvIndex object.
.IP "\(bu" 4
\&\fBanalyzer\fR \- An object which subclasses
KinoSearch::Analysis::Analyer, such as a
PolyAnalyzer.  This \fBmust\fR be identical
to the Analyzer used at index\-time, or the results won't match up.
.Sh "search"
.IX Subsection "search"
.Vb 4
\&    my $hits = $searcher->search( 
\&        query  => $query,  # required
\&        filter => $filter, # default: undef (no filtering)
\&    );
.Ve
.PP
Process a search and return a Hits object.
\&\fIsearch()\fR expects labeled hash-style parameters.
.IP "\(bu" 4
\&\fBquery\fR \- Can be either an object which subclasses
KinoSearch::Search::Query, or a query string.  If
it's a query string, it will be parsed using a QueryParser and a search will
be performed against all indexed fields in the invindex.  For more sophisticated
searching, supply Query objects, such as TermQuery and BooleanQuery.
.IP "\(bu" 4
\&\fBfilter\fR \- Must be a
KinoSearch::Search::QueryFilter.  Search
results will be limited to only those documents which pass through the filter.
.SH "Caching a Searcher"
.IX Header "Caching a Searcher"
When a Searcher is created, a small portion of the invindex is loaded into
memory.  For large document collections, this startup time may become
noticable, in which case reusing the searcher is likely to speed up your
search application.  Caching a Searcher is especially helpful when running a
high-activity app under mod_perl.
.PP
Searcher objects always represent a snapshot of an invindex as it existed when
the Searcher was created.  If you want the search results to reflect
modifications to an invindex, you must create a new Searcher after the update
process completes.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2005\-2006 Marvin Humphrey
.SH "LICENSE, DISCLAIMER, BUGS, etc."
.IX Header "LICENSE, DISCLAIMER, BUGS, etc."
See KinoSearch version 0.15.
Creat By MiNi SheLL
Email: devilkiller@gmail.com