| 1 |
dpavlin |
1 |
#!/usr/bin/perl -w |
| 2 |
|
|
|
| 3 |
|
|
|
| 4 |
|
|
###################################### |
| 5 |
|
|
# |
| 6 |
|
|
# A simple search engine program |
| 7 |
|
|
# |
| 8 |
|
|
###################################### |
| 9 |
|
|
|
| 10 |
|
|
|
| 11 |
|
|
use strict; |
| 12 |
|
|
use CGI::Carp qw(fatalsToBrowser); |
| 13 |
|
|
use Semantic::API; |
| 14 |
|
|
use DBI; |
| 15 |
|
|
use CGI; |
| 16 |
|
|
use Data::Dump qw/dump/; |
| 17 |
|
|
use EPrints; |
| 18 |
|
|
use Cwd qw/abs_path/; |
| 19 |
|
|
|
| 20 |
|
|
my $abs_path = abs_path( $0 ); |
| 21 |
|
|
$abs_path =~ s!/[^/]*$!/!; #!fix-vim |
| 22 |
|
|
|
| 23 |
|
|
############################################################# |
| 24 |
|
|
my $COLLECTION = 'EPrints'; |
| 25 |
|
|
my ( @TERMS, @RESULTS ); |
| 26 |
|
|
my ( $RESULTS_TO_DISPLAY, $TERMS_TO_DISPLAY ) = ( 10, 10 ); |
| 27 |
|
|
############################################################# |
| 28 |
|
|
|
| 29 |
|
|
|
| 30 |
|
|
############################### |
| 31 |
|
|
# CGI Variables |
| 32 |
|
|
############################### |
| 33 |
|
|
my $cgi = new CGI; |
| 34 |
|
|
my $start = $cgi->param( 'start' ) || 0; |
| 35 |
|
|
my $query = $cgi->param( 'query' ) || ''; |
| 36 |
|
|
my $similar = $cgi->param( 'similar' ) || ''; |
| 37 |
|
|
|
| 38 |
|
|
my $charset='iso-8859-2'; |
| 39 |
|
|
|
| 40 |
|
|
|
| 41 |
|
|
############################## |
| 42 |
|
|
# Start the HTML output |
| 43 |
|
|
############################## |
| 44 |
|
|
print "Content-type: text/html; charset=$charset\n\n"; |
| 45 |
|
|
print qq|<?xml version="1.0" encoding="$charset"?> |
| 46 |
|
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" |
| 47 |
|
|
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> |
| 48 |
|
|
<html xmlns="http://www.w3.org/1999/xhtml"> |
| 49 |
|
|
<head> |
| 50 |
|
|
<meta http-equiv="content-type" content="text/html; charset=$charset" /> |
| 51 |
|
|
<title>Search Engine</title> |
| 52 |
|
|
</head> |
| 53 |
|
|
<body> |
| 54 |
|
|
<form method="get" action=""> |
| 55 |
|
|
<p> |
| 56 |
|
|
<input type="text" name="query" value="$query" /> |
| 57 |
|
|
<input type="submit" /> |
| 58 |
|
|
</p>\n|; |
| 59 |
|
|
|
| 60 |
|
|
|
| 61 |
|
|
|
| 62 |
|
|
########################## |
| 63 |
|
|
# Do the actual search |
| 64 |
|
|
########################## |
| 65 |
|
|
if( $query || $similar ) { |
| 66 |
|
|
|
| 67 |
|
|
# Create collection-based objects |
| 68 |
|
|
my $semantic = Semantic::API::Search->new( storage => 'sqlite', |
| 69 |
|
|
database => "$abs_path/eprints.db", |
| 70 |
|
|
collection => $COLLECTION ); |
| 71 |
|
|
|
| 72 |
|
|
my ($results, $terms); |
| 73 |
|
|
if ( $query ) { |
| 74 |
|
|
($results, $terms) = $semantic->semantic_search( $query ); |
| 75 |
|
|
} else { |
| 76 |
|
|
($results, $terms) = $semantic->find_similar( $similar ); |
| 77 |
|
|
} |
| 78 |
|
|
|
| 79 |
|
|
warn "results = ",dump( $results ); |
| 80 |
|
|
warn "terms = ",dump( $terms ); |
| 81 |
|
|
|
| 82 |
|
|
################################## |
| 83 |
|
|
# TERM BASED CALCULATIONS |
| 84 |
|
|
################################## |
| 85 |
|
|
my @sorted_terms = sort { $terms->{$b} <=> $terms->{$a} } keys %$terms; |
| 86 |
|
|
my @top_terms = splice( @sorted_terms, $start, $TERMS_TO_DISPLAY ); |
| 87 |
|
|
|
| 88 |
|
|
print "<p>Related Terms: ". ( join ", ", @top_terms ) ."</p>\n"; |
| 89 |
|
|
print "<hr />\n"; |
| 90 |
|
|
|
| 91 |
|
|
|
| 92 |
|
|
################################## |
| 93 |
|
|
# DOCUMENT BASED CALCULATIONS |
| 94 |
|
|
################################## |
| 95 |
|
|
|
| 96 |
|
|
print "<p>Result Count: ".(scalar keys %$results)."</p>\n"; |
| 97 |
|
|
|
| 98 |
|
|
my @sorted_results = sort { $results->{$b} <=> $results->{$a} } keys %$results; |
| 99 |
|
|
my @display_results = splice( @sorted_results, $start, $RESULTS_TO_DISPLAY ); |
| 100 |
|
|
|
| 101 |
|
|
warn dump( @display_results ); |
| 102 |
|
|
|
| 103 |
|
|
################################## |
| 104 |
|
|
# Access the storage engine to |
| 105 |
|
|
# retrieve the title and text |
| 106 |
|
|
################################## |
| 107 |
|
|
my $i = 1 + $start; |
| 108 |
|
|
print $semantic->paginate( "?query=$query;similar=$similar", $start, scalar keys %$results, $RESULTS_TO_DISPLAY); |
| 109 |
|
|
foreach my $id ( @display_results ){ |
| 110 |
|
|
EPrints->id( $id ); |
| 111 |
|
|
print "<p>$i. <b>", EPrints->lookup( 'title' ), "</b> <em>", sprintf("%.2f",$results->{$id}), "</em> <a href=\"?similar=$id\">similar</a></p>\n"; |
| 112 |
|
|
print "<p>"; |
| 113 |
|
|
# print $semantic->summarize($id); |
| 114 |
|
|
print "<small>", EPrints->lookup('abstract'), "</small>"; |
| 115 |
|
|
print "</p>\n"; |
| 116 |
|
|
$i++; |
| 117 |
|
|
} |
| 118 |
|
|
|
| 119 |
|
|
} |
| 120 |
|
|
|
| 121 |
|
|
|
| 122 |
|
|
print "</body>\n</html>\n"; |
Parent Directory
| 
Revision Log