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

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Revision 145 - (show annotations)
Tue May 8 14:28:14 2007 UTC (16 years, 9 months ago) by dpavlin
Original Path: lib/Grep/Search.pm
File size: 5530 byte(s)
delete items from full-text invindex also
1 package Grep::Search;
2
3 use strict;
4 use warnings;
5 use base qw( Class::Accessor );
6 Grep::Search->mk_accessors( qw( invindexer create index_path hits ) );
7
8 use Data::Dump qw/dump/;
9 use KinoSearch::InvIndexer;
10 use KinoSearch::Searcher;
11 use Jifty::Util;
12
13 my $debug = 0;
14
15 =head1 NAME
16
17 Grep::Search - full text search using L<KinoSearch>
18
19 =head1 METHODS
20
21 =head2 new
22
23 my $search = Grep::Search->new();
24
25 my $search = Grep::Search->new( create => 1 );
26
27 =head2 invindexer
28
29 Accessor to call any method defined on L<KinoSearch::InvIndexer>
30
31 $search->invindexer->delete_by_term( 'id', 42 );
32
33 =cut
34
35 sub log { Jifty->web->log }
36
37 sub new {
38 my $class = shift;
39 my $self = $class->SUPER::new(@_);
40
41 my $index_path = Jifty::Util->app_root . '/var/invindex';
42
43 $self->index_path( $index_path );
44
45 if ( ! -e "$index_path" || $self->create ) {
46 $self->log->debug("Creating new index $index_path");
47 $self->invindexer( KinoSearch::InvIndexer->new( invindex => Grep::Search::Schema->clobber( $index_path ) ) );
48 } else {
49 $self->log->debug("Opening index: $index_path");
50 $self->invindexer( KinoSearch::InvIndexer->new( invindex => Grep::Search::Schema->open( $index_path ) ) );
51 }
52
53 return $self;
54 }
55
56 =head2 add
57
58 $search->add( $record, $owner_id );
59
60 =cut
61
62 sub add {
63 my $self = shift;
64
65 my $i = shift or die "no record to add";
66 my $uid = shift;
67
68 die "record not Jifty::Record but ", ref $i unless ($i->isa('Jifty::Record'));
69
70 my $pk = { $i->primary_keys };
71
72 my $doc;
73
74 my @columns = map { $_->name } $i->columns;
75
76 foreach my $c ( @columns ) {
77
78 my $v = $i->$c;
79
80 if ( ref($v) ne '' ) {
81
82 foreach my $f_c ( qw/id name title/ ) {
83 if ( $i->$c->can( $f_c ) ) {
84 my $f_v = $i->$c->$f_c || $i->$c->{values}->{ $f_c };
85 my $col = $c . '_' . $f_c;
86 if ( $f_v ) {
87 warn " # $col = $f_v\n" if ($debug);
88 $doc->{ $col } = $f_v;
89 } else {
90 warn " . $col is NULL\n" if ($debug);
91 }
92 }
93 }
94
95 if ($v->isa('Jifty::DateTime')) {
96 warn " d $c = $v\n" if ($debug);
97 $doc->{$c} = $v;
98 } else {
99 warn " s $c = $v [",ref($v),"]\n" if ($debug);
100 }
101 next;
102 }
103
104 next if (! defined($v) || $v eq '');
105
106 $v =~ s/<[^>]+>/ /gs;
107
108 if ( defined( $pk->{$c} ) ) {
109 $doc->{ $c } = $v;
110 warn " * $c = $v\n" if ($debug);
111 } else {
112 $doc->{ $c } = $v;
113 warn " + $c = ", $self->snippet( 50, $v ), "\n" if ($debug);
114 }
115 }
116
117 # add _owner_id to speed up filtering of search results
118 $uid ||= Jifty->web->current_user->id;
119 $doc->{ '_owner_id' } = $uid;
120
121 $self->invindexer->add_doc( $doc );
122
123 $self->log->debug("added ", $i->id, " for user $uid to index");
124 }
125
126 =head2 collection
127
128 Return C<Grep::Model::ItemCollection> which is result of C<search query>
129
130 my $ItemCollection = $search->collection( 'search query' );
131
132 =head2 hits
133
134 Return number of results from last C<collection> call
135
136 my $num_results = $search->hits;
137
138 =cut
139
140 sub collection {
141 my $self = shift;
142
143 my $q = shift or die "no q?";
144
145 my $searcher = KinoSearch::Searcher->new(
146 invindex => Grep::Search::Schema->open( $self->index_path ), );
147 $self->log->debug("$searcher created");
148
149 my $full_q = "($q) AND _owner_id:" . Jifty->web->current_user->id;
150
151 $self->log->debug("searching for '$q' using $full_q");
152 my $hits = $searcher->search(
153 query => $full_q,
154 # offset => $offset,
155 # num_wanted => $hits_per_page,
156 );
157
158 $self->hits( $hits->total_hits );
159
160 $self->log->debug("found ", $self->hits, " results");
161
162 my $collection = Grep::Model::ItemCollection->new();
163
164 my @results;
165
166 my $i = 0;
167 while ( my $hit = $hits->fetch_hit_hashref ) {
168
169 my $score = $hit->{score};
170 my $title = $hit->{title};
171 my $id = $hit->{id};
172
173 $self->log->debug("result $i [$id] $title $score");
174
175 my $item = Grep::Model::Item->new();
176 my ($ok,$msg) = $item->load_by_cols( id => $id );
177
178 if ( $ok ) {
179 $collection->add_record( $item );
180 } else {
181 warn "can't load item $id\n";
182 }
183
184 }
185
186 $self->log->debug("finished search");
187
188 return $collection;
189 }
190
191 =head2 finish
192
193 $search->finish
194
195 =cut
196
197 sub finish {
198 my $self = shift;
199 if ($self->invindexer) {
200 $self->log->debug("closing index");
201 $self->invindexer->finish;
202 }
203
204 $self->log->debug("finish");
205
206 undef $self;
207
208 return;
209 }
210
211 =head2 snippet
212
213 my $short = $self->snippet( 50, $text );
214
215 =cut
216
217 sub snippet {
218 my $self = shift;
219
220 my $len = shift or die "no len?";
221 my $m = join(" ", @_);
222
223 $m =~ s/\s+/ /gs;
224
225 if (length($m) > $len) {
226 return substr($m,0,$len) . '...';
227 } else {
228 return $m;
229 }
230 }
231
232 package Grep::Search::KeywordField;
233 use base qw( KinoSearch::Schema::FieldSpec );
234 sub analyzed { 0 }
235
236 package Grep::Search::Schema;
237
238 =head1 NAME
239
240 Grep::Search::Schema - schema definition for full-text search
241
242 =cut
243
244 use base 'KinoSearch::Schema';
245 use KinoSearch::Analysis::PolyAnalyzer;
246
247 our %fields = (
248 id => 'Grep::Search::KeywordField',
249
250 in_feed_id => 'Grep::Search::KeywordField',
251 in_feed_url => 'Grep::Search::KeywordField',
252 in_feed_title => 'KinoSearch::Schema::FieldSpec',
253 in_feed_owner => 'Grep::Search::KeywordField',
254 in_feed_created_on => 'Grep::Search::KeywordField',
255
256 title => 'KinoSearch::Schema::FieldSpec',
257 link => 'Grep::Search::KeywordField',
258 content => 'KinoSearch::Schema::FieldSpec',
259 summary => 'KinoSearch::Schema::FieldSpec',
260 category => 'KinoSearch::Schema::FieldSpec',
261 author => 'KinoSearch::Schema::FieldSpec',
262 issued => 'Grep::Search::KeywordField',
263 modified => 'Grep::Search::KeywordField',
264
265 _owner_id => 'Grep::Search::KeywordField',
266 );
267
268 sub analyzer {
269 return KinoSearch::Analysis::PolyAnalyzer->new( language => 'en' );
270 }
271
272 1;

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