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Lucene::Search::Highlight -- Highlight terms in Lucene search results

Lucene::Search::Highlight -- Highlight terms in Lucene search results


NAME

Lucene::Search::Highlight -- Highlight terms in Lucene search results


SYNOPSIS

Load highlight classes into namespace


  use Lucene::Search::Highlight;

Create Formatter and Query Scorer


  my $formatter = new Lucene::Search::Highlight::SimpleHTMLFormatter("<b>", "</b>");

  my $scorer = new Lucene::Search::Highlight::QueryScorer($query);

Create Highlighter


  my $highlighter = new Lucene::Search::Highlight::Highlighter($formatter, $scorer);

Get best fragements with highlighted terms


  my $fragement  = $highlighter->getBestFragment($analyzer, $field, $text);

  my $fragements = $highlighter->getBestFragments($analyzer, $field, $text, $num_fragements, $separator);


DESCRIPTION

Lucene::Search::Highlight is an extention of the original Lucene package and provides ``keyword in context'' features typically used to highlight search terms in the text of Lucene results pages. The Highlighter class is the central component and can be used to extract the most interesting sections of a piece of text and highlight them, with the help of Scorer and Formatter classes.


REQUIREMENTS

This module requires Lucene to be installed.


INSTALLATION

This module requires the clucene contrib library to be installed. The best way to get it is to go to the following page




    http://sourceforge.net/projects/clucene/

and download the latest clucene-contrib version. Currently it is clucene-contrib-0.9.14. Make sure you compile it with debug disabled and install it in your standard library path.

On a Linux platform this goes as follows:


    wget http://kent.dl.sourceforge.net/sourceforge/clucene/clucene-contrib-0.9.14.tar.gz

    tar xzf clucene-contrib-0.9.14.tar.gz

    cd clucene-contrib-0.9.14

    ./autogen.sh

    ./configure --disable-debug --prefix=/usr --exec-prefix=/usr

    make

    make check

    (as root) make install

To install the perl module itself, run the following commands:


    perl Makefile.PL

    make

    make test

    (as root) make install


AUTHOR

Thomas Busch <tbusch at cpan dot org>


COPYRIGHT AND LICENSE

Copyright (c) 2007 Thomas Busch

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.


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.

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