/[Grep]/lib/Grep/Search/KinoSearch.pm
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Annotation of /lib/Grep/Search/KinoSearch.pm

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Revision 49 - (hide annotations)
Wed Feb 21 13:01:34 2007 UTC (17 years ago) by dpavlin
Original Path: lib/Grep/Search.pm
File size: 3381 byte(s)
re-wrote Lucene support with fresh eyes
1 dpavlin 47 package Grep::Search;
2    
3     use strict;
4     use warnings;
5    
6     use Data::Dump qw/dump/;
7     use Lucene;
8     use Jifty::Util;
9    
10     my $index_path = Jifty::Util->app_root . '/var/lucene';
11    
12     my ( $analyzer, $store, $writer );
13    
14     my $debug = 0;
15    
16 dpavlin 49 sub create {
17 dpavlin 47
18     my $create = 0;
19     if (! -e "$index_path/segments") {
20     $create = 1;
21 dpavlin 49 Jifty->log->debug("create index $index_path") unless ($store);
22 dpavlin 47 } else {
23 dpavlin 49 Jifty->log->debug("open index: $index_path") unless ($store);
24 dpavlin 47 }
25 dpavlin 49 return $create;
26 dpavlin 47 }
27    
28 dpavlin 49 sub analyzer {
29     my $self = shift;
30     $analyzer ||= new Lucene::Analysis::Standard::StandardAnalyzer();
31     return $analyzer;
32     }
33    
34     sub store {
35     my $self = shift;
36    
37     $store ||= Lucene::Store::FSDirectory->getDirectory( $index_path, $self->create );
38     return $store;
39     }
40    
41     sub writer {
42     my $self = shift;
43     $writer ||= new Lucene::Index::IndexWriter( $self->store, $self->analyzer, $self->create );
44     return $writer;
45     }
46    
47 dpavlin 47 =head2 add
48    
49     Grep::Search->add( $record );
50    
51     =cut
52    
53     sub add {
54     my $self = shift;
55    
56     my $i = shift or die "no record to add";
57    
58     die "record not Jifty::Record but ", ref $i unless ($i->isa('Jifty::Record'));
59    
60     my $pk = { $i->primary_keys };
61    
62     my $doc = new Lucene::Document;
63    
64     my @columns = map { $_->name } $i->columns;
65    
66     foreach my $c ( @columns ) {
67    
68     my $v = $i->$c;
69    
70     if ( ref($v) ne '' ) {
71     if ($i->$c->can('id')) {
72     $v = $i->$c->id;
73     warn " # $c = $v [id]\n" if ($debug);
74     $doc->add(Lucene::Document::Field->Keyword( $c, $v ));
75     } elsif ($v->isa('Jifty::DateTime')) {
76     warn " d $c = $v\n" if ($debug);
77     $doc->add(Lucene::Document::Field->Keyword( $c, "$v" ));
78     } else {
79     warn " s $c = $v [",ref($v),"]\n" if ($debug);
80     }
81     next;
82     }
83    
84     next if (! defined($v) || $v eq '');
85    
86     $v =~ s/<[^>]+>/ /gs;
87    
88     if ( defined( $pk->{$c} ) ) {
89     $doc->add(Lucene::Document::Field->Keyword( $c, $v ));
90     warn " * $c = $v\n" if ($debug);
91     } else {
92     $doc->add(Lucene::Document::Field->Text( $c, $v ));
93     warn " + $c = $v\n" if ($debug);
94     }
95     }
96    
97 dpavlin 49 $self->writer->addDocument($doc);
98 dpavlin 47
99     Jifty->log->debug("added ", $i->id, " to index");
100     }
101    
102     =head2
103    
104     my $ItemCollection = Grep::Search->collection( 'search query' );
105    
106     =cut
107    
108     sub collection {
109     my $self = shift;
110    
111     my $q = shift or die "no q?";
112    
113 dpavlin 49 my $searcher = new Lucene::Search::IndexSearcher($self->store);
114     my $parser = new Lucene::QueryParser("content", $self->analyzer);
115 dpavlin 47 my $query = $parser->parse( $q );
116    
117     Jifty->log->debug("searching for '$q'");
118    
119     my $hits = $searcher->search($query);
120     my $num_hits = $hits->length();
121    
122     Jifty->log->debug("found $num_hits results");
123    
124     my $collection = Grep::Model::ItemCollection->new();
125    
126     my @results;
127    
128     for ( my $i = 0; $i < $num_hits; $i++ ) {
129    
130     my $doc = $hits->doc( $i );
131    
132     my $score = $hits->score($i);
133     my $title = $doc->get("title");
134     my $id = $doc->get("id");
135    
136     warn "## $i $score $title\n";
137    
138     my $item = Grep::Model::Item->new();
139     my ($ok,$msg) = $item->load_by_cols( id => $id );
140    
141     if ( $ok ) {
142     $collection->add_record( $item );
143     } else {
144     warn "can't load item $id\n";
145     }
146    
147     }
148    
149     undef $hits;
150     undef $query;
151     undef $parser;
152     undef $searcher;
153    
154     return $collection;
155     }
156    
157     =head2 finish
158    
159     Grep::Search->finish
160    
161     =cut
162    
163     sub finish {
164     my $self = shift;
165     if ($writer) {
166     warn "closing index\n";
167     $writer->close;
168     }
169     undef $writer;
170     }
171    
172     sub _signal {
173     my $s = shift;
174     warn "catched SIG $s\n";
175     finish();
176     exit(0);
177     }
178    
179     $SIG{'__DIE__'} = \&_signal;
180     $SIG{'INT'} = \&_signal;
181     $SIG{'QUIT'} = \&_signal;
182    
183     1;

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