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#!/usr/bin/perl -w |
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###################################### |
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# |
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# A simple search engine program |
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# |
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###################################### |
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use strict; |
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use CGI::Carp qw(fatalsToBrowser); |
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use Semantic::API; |
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use CGI; |
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use Data::Dump qw/dump/; |
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use EPrints; |
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use Cwd qw/abs_path/; |
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my $abs_path = abs_path( $0 ); |
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$abs_path =~ s!/[^/]*$!/!; #!fix-vim |
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############################################################# |
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my $COLLECTION = 'EPrints'; |
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my ( @TERMS, @RESULTS ); |
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my ( $RESULTS_TO_DISPLAY, $TERMS_TO_DISPLAY ) = ( 10, 10 ); |
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############################################################# |
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############################### |
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# CGI Variables |
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############################### |
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my $cgi = new CGI; |
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my $start = $cgi->param( 'start' ) || 0; |
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my $query = $cgi->param( 'query' ) || ''; |
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my $similar = $cgi->param( 'similar' ) || ''; |
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my $charset='iso-8859-2'; |
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############################## |
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# Start the HTML output |
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############################## |
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print "Content-type: text/html; charset=$charset\n\n"; |
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print qq|<?xml version="1.0" encoding="$charset"?> |
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" |
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"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> |
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<html xmlns="http://www.w3.org/1999/xhtml"> |
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<head> |
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<meta http-equiv="content-type" content="text/html; charset=$charset" /> |
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<title>Search Engine</title> |
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</head> |
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<body> |
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<form method="get" action=""> |
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<p> |
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<input type="text" name="query" value="$query" /> |
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<input type="submit" /> |
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</p>\n|; |
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########################## |
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# Do the actual search |
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########################## |
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if( $query || $similar ) { |
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# Create collection-based objects |
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my $semantic = Semantic::API::Search->new( storage => 'sqlite', |
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database => "$abs_path/eprints.db", |
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collection => $COLLECTION ); |
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my ($results, $terms); |
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if ( $query ) { |
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($results, $terms) = $semantic->semantic_search( $query ); |
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} else { |
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($results, $terms) = $semantic->find_similar( $similar ); |
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} |
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warn "results = ",dump( $results ); |
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warn "terms = ",dump( $terms ); |
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################################## |
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# TERM BASED CALCULATIONS |
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################################## |
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my @sorted_terms = sort { $terms->{$b} <=> $terms->{$a} } keys %$terms; |
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my @top_terms = splice( @sorted_terms, $start, $TERMS_TO_DISPLAY ); |
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print "<p>Related Terms: ". ( join ", ", @top_terms ) ."</p>\n"; |
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print "<hr />\n"; |
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################################## |
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# DOCUMENT BASED CALCULATIONS |
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################################## |
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print "<p>Result Count: ".(scalar keys %$results)."</p>\n"; |
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my @sorted_results = sort { $results->{$b} <=> $results->{$a} } keys %$results; |
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my @display_results = splice( @sorted_results, $start, $RESULTS_TO_DISPLAY ); |
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warn dump( @display_results ); |
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################################## |
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# Access the storage engine to |
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# retrieve the title and text |
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################################## |
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my $i = 1 + $start; |
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print $semantic->paginate( "?query=$query;similar=$similar", $start, scalar keys %$results, $RESULTS_TO_DISPLAY); |
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foreach my $id ( @display_results ){ |
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EPrints->id( $id ); |
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print "<p>$i. <b>", EPrints->lookup( 'title' ), "</b> <em>", sprintf("%.2f",$results->{$id}), "</em> <a href=\"?similar=$id\">similar</a></p>\n"; |
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print "<p>"; |
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# print $semantic->summarize($id); |
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print "<small>", EPrints->lookup('abstract'), "</small>"; |
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print "</p>\n"; |
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$i++; |
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} |
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} |
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print "</body>\n</html>\n"; |
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