NAME¶
KinoSearch1 - search engine library
VERSION¶
1.01
STABLE FORK¶
KinoSearch1 is a fork of KinoSearch version 0.165 intended to provide stability
and backwards compatibility. For the latest features, see the main branch.
SYNOPSIS¶
First, write an application to build an inverted index, or "invindex",
from your document collection.
use KinoSearch1::InvIndexer;
use KinoSearch1::Analysis::PolyAnalyzer;
my $analyzer
= KinoSearch1::Analysis::PolyAnalyzer->new( language => 'en' );
my $invindexer = KinoSearch1::InvIndexer->new(
invindex => '/path/to/invindex',
create => 1,
analyzer => $analyzer,
);
$invindexer->spec_field(
name => 'title',
boost => 3,
);
$invindexer->spec_field( name => 'bodytext' );
while ( my ( $title, $bodytext ) = each %source_documents ) {
my $doc = $invindexer->new_doc;
$doc->set_value( title => $title );
$doc->set_value( bodytext => $bodytext );
$invindexer->add_doc($doc);
}
$invindexer->finish;
Then, write a second application to search the invindex:
use KinoSearch1::Searcher;
use KinoSearch1::Analysis::PolyAnalyzer;
my $analyzer
= KinoSearch1::Analysis::PolyAnalyzer->new( language => 'en' );
my $searcher = KinoSearch1::Searcher->new(
invindex => '/path/to/invindex',
analyzer => $analyzer,
);
my $hits = $searcher->search( query => "foo bar" );
while ( my $hit = $hits->fetch_hit_hashref ) {
print "$hit->{title}\n";
}
DESCRIPTION¶
KinoSearch1 is a loose port of the Java search engine library Apache Lucene,
written in Perl and C. The archetypal application is website search, but it
can be put to many different uses.
Features¶
- •
- Extremely fast and scalable - can handle millions of documents
- •
- Incremental indexing (addition/deletion of documents to/from an existing
index).
- •
- Full support for 12 Indo-European languages.
- •
- Support for boolean operators AND, OR, and AND NOT; parenthetical
groupings, and prepended +plus and -minus
- •
- Algorithmic selection of relevant excerpts and highlighting of search
terms within excerpts
- •
- Highly customizable query and indexing APIs
- •
- Phrase matching
- •
- Stemming
- •
- Stoplists
Getting Started¶
KinoSearch1 has many, many classes, but you only need to get aquainted with
three to start with:
- •
- KinoSearch1::InvIndexer
- •
- KinoSearch1::Searcher
- •
- KinoSearch1::Analysis::PolyAnalyzer
Probably the quickest way to get something up and running is to cut and paste
the sample applications out of KinoSearch1::Docs::Tutorial and adapt them for
your purposes.
SEE ALSO¶
The actively developed main branch, KinoSearch.
The KinoSearch homepage, where you'll find links to the mailing list and so on,
is <
http://www.rectangular.com/kinosearch>.
The Lucene homepage is <
http://lucene.apache.org>.
KinoSearch1::Docs::FileFormat, for an overview of the invindex file format.
History¶
Search::Kinosearch 0.02x, no longer supported, is this suite's forerunner.
Plucene is a pure-Perl port of Lucene 1.3. KinoSearch is a from-scratch
project which attempts to draws on the lessons of both. The API is not
compatible with either.
KinoSearch is named for Kino, the main character in John Steinbeck's novella,
"The Pearl".
SUPPORT¶
Please direct support questions to the KinoSearch mailing list: subscription
information at <
http://www.rectangular.com/kinosearch>.
BUGS¶
UTF-8 scalars are not indexed properly. This is fixed in KinoSearch 0.3x, but
cannot be fixed in KinoSearch1 without breaking index compatibility with
KinoSearch 0.165 from which KinoSearch1 was forked.
Not thread-safe.
Indexing crashes reliably on Solaris 2.9 or other systems which are fussy about
pointer alignment.
Please report any other bugs or feature requests to
"bug-kinosearch1@rt.cpan.org", or through the web interface at
<
http://rt.cpan.org/NoAuth/ReportBug.html?Queue=KinoSearch1>.
COPYRIGHT & LICENSE¶
Copyright 2005-2010 Marvin Humphrey
This program is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.
Terms of usage for Apache Lucene, from which portions of KinoSearch1 are
derived, are spelled out in the Apache License: see the file
"ApacheLicense2.0.txt".
DISCLAIMER OF WARRANTY¶
BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE
SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE
STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE
SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR
IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO
THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE
PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR
CORRECTION.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY
COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE
SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE SOFTWARE (INCLUDING BUT NOT LIMITED TO
LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR
THIRD PARTIES OR A FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER
SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.