1 package Koha::MetaSearcher;
3 # Copyright 2014 ByWater Solutions
5 # This file is part of Koha.
7 # Koha is free software; you can redistribute it and/or modify it
8 # under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 3 of the License, or
10 # (at your option) any later version.
12 # Koha is distributed in the hope that it will be useful, but
13 # WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with Koha; if not, see <http://www.gnu.org/licenses>.
22 use base 'Class::Accessor';
24 use C4::Biblio qw(TransformMarcToKoha);
25 use C4::Charset qw( MarcToUTF8Record SetUTF8Flag );
26 use C4::Search qw( new_record_from_zebra );
27 use DBIx::Class::ResultClass::HashRefInflator;
31 use Koha::MetadataRecord;
33 use Storable qw( fd_retrieve store_fd );
34 use Time::HiRes qw( clock_gettime CLOCK_MONOTONIC );
40 __PACKAGE__->mk_accessors( qw( fetch offset on_error resultset ) );
43 my ( $class, $options ) = @_;
45 my ( $uuid, $uuidstring );
46 UUID::generate($uuid);
47 UUID::unparse( $uuid, $uuidstring );
54 resultset => $uuidstring,
60 my ( $self, $index, $server, $marcrecord ) = @_;
62 my @kohafields = ('biblio.title','biblio.subtitle','biblio.seriestitle','biblio.author',
63 'biblioitems.isbn','biblioitems.issn','biblioitems.lccn','biblioitems.editionstatement',
64 'biblio.copyrightdate','biblioitems.publicationyear');
65 my $metadata = C4::Biblio::TransformMarcToKoha({ kohafields => \@kohafields, record => $marcrecord});
66 $metadata->{edition} = delete $metadata->{editionstatement};
67 $metadata->{date} = delete $metadata->{copyrightdate};
68 $metadata->{date} //= delete $metadata->{publicationyear};
70 push @{ $self->{results} }, {
73 record => $marcrecord,
74 metadata => $metadata,
79 my ( $self, $server_ids, $query ) = @_;
81 my $resultset_expiry = 300;
83 my $cache = Koha::Caches->get_instance();
84 my $schema = Koha::Database->new->schema;
87 map { $_ => 0 } @$server_ids
90 map { $_ => 0 } @$server_ids
95 my $start = clock_gettime( CLOCK_MONOTONIC );
96 my $select = IO::Select->new;
101 foreach my $server_id ( @$server_ids ) {
102 if ( $server_id =~ /^\d+$/ ) {
104 my $server = $schema->resultset('Z3950server')->find(
105 { id => $server_id },
106 { result_class => 'DBIx::Class::ResultClass::HashRefInflator' },
108 $server->{type} = 'z3950';
110 push @servers, $server;
111 } elsif ( $server_id =~ /(\w+)(?::(\w+))?/ ) {
118 servername => $server_id,
123 # HashRefInflator is used so that the information will survive into the fork
124 foreach my $server ( @servers ) {
126 my $set = $cache->get_from_cache( 'z3950-resultset-' . $self->resultset . '-' . $server->{id} );
127 if ( ref($set) eq 'HASH' ) {
128 $set->{server} = $server;
129 push @cached_sets, $set;
134 $select->add( $self->_start_worker( $server, $query ) );
137 # Handle these while the servers are searching
138 foreach my $set ( @cached_sets ) {
139 $self->_handle_hits( $stats, $set );
142 while ( $select->count ) {
143 foreach my $readfh ( $select->can_read() ) {
144 my $result = fd_retrieve( $readfh );
146 $select->remove( $readfh );
150 next if ( ref $result ne 'HASH' );
152 if ( $result->{error} ) {
153 $self->{on_error}->( $result->{server}, $result->{error} );
157 $self->_handle_hits( $stats, $result );
160 $cache->set_in_cache( 'z3950-resultset-' . $self->resultset . '-' . $result->{server}->{id}, {
161 hits => $result->{hits},
162 num_fetched => $result->{num_fetched},
163 num_hits => $result->{num_hits},
164 }, { expiry => $resultset_expiry } );
169 $stats->{time} = clock_gettime( CLOCK_MONOTONIC ) - $start;
175 my ( $self, $server, $query ) = @_;
176 pipe my $readfh, my $writefh;
178 # Accessing the cache or Koha database after the fork is risky, so get any resources we need
181 my $marcflavour = C4::Context->preference('marcflavour');
183 if ( ( $pid = fork ) ) {
188 } elsif ( !defined $pid ) {
191 $self->{on_error}->( $server, 'Failed to fork' );
197 my ( $num_hits, $num_fetched, $hits, $results );
200 if ( $server->{type} eq 'z3950' ) {
201 my $zoptions = ZOOM::Options->new();
202 $zoptions->option( 'elementSetName', 'F' );
203 $zoptions->option( 'databaseName', $server->{db} );
204 $zoptions->option( 'user', $server->{userid} ) if $server->{userid};
205 $zoptions->option( 'password', $server->{password} ) if $server->{password};
206 $zoptions->option( 'preferredRecordSyntax', $server->{syntax} );
207 $zoptions->option( 'timeout', $server->{timeout} ) if $server->{timeout};
209 $connection = ZOOM::Connection->create($zoptions);
211 $connection->connect( $server->{host}, $server->{port} );
212 $results = $connection->search_pqf( $query ); # Starts the search
213 } elsif ( $server->{type} eq 'koha' ) {
214 $connection = C4::Context->Zconn( $server->{extra} );
215 $results = $connection->search_pqf( $query ); # Starts the search
216 } elsif ( $server->{type} eq 'batch' ) {
217 $server->{encoding} = 'utf-8';
222 error => $connection ? $connection->exception() : $@,
228 if ( $server->{type} eq 'batch' ) {
229 # TODO: actually handle PQF
230 $query =~ s/@\w+ (?:\d+=\d+ )?//g;
233 my $schema = Koha::Database->new->schema;
234 $schema->storage->debug(1);
235 my $match_condition = [ map +{ -like => '%' . $_ . '%' }, split( /\s+/, $query ) ];
236 $hits = [ $schema->resultset('ImportRecord')->search(
238 import_batch_id => $server->{extra},
240 { 'import_biblios.title' => $match_condition },
241 { 'import_biblios.author' => $match_condition },
242 { 'import_biblios.isbn' => $match_condition },
243 { 'import_biblios.issn' => $match_condition },
247 join => [ qw( import_biblios ) ],
248 rows => $self->{fetch},
250 )->get_column( 'marc' )->all ];
252 $num_hits = $num_fetched = scalar @$hits;
254 $num_hits = $results->size;
255 $num_fetched = ( $self->{offset} + $self->{fetch} ) < $num_hits ? $self->{fetch} : $num_hits;
257 $hits = [ map { $_->raw() } @{ $results->records( $self->{offset}, $num_fetched, 1 ) } ];
260 if ( !@$hits && $connection && $connection->exception() ) {
262 error => $connection->exception(),
268 if ( $server->{type} eq 'koha' ) {
269 $hits = [ map { C4::Search::new_record_from_zebra( $server->{extra}, $_ ) } @$hits ];
271 $hits = [ map { $self->_import_record( $_, $marcflavour, $server->{encoding} ? $server->{encoding} : "iso-5426" ) } @$hits ];
276 num_fetched => $num_fetched,
277 num_hits => $num_hits,
285 my ( $self, $raw, $marcflavour, $encoding ) = @_;
287 my ( $marcrecord ) = MarcToUTF8Record( $raw, $marcflavour, $encoding ); #ignores charset return values
289 SetUTF8Flag($marcrecord);
294 my ( $self, $stats, $set ) = @_;
296 my $server = $set->{server};
298 my $num_hits = $stats->{num_hits}->{ $server->{id} } = $set->{num_hits};
299 my $num_fetched = $stats->{num_fetched}->{ $server->{id} } = $set->{num_fetched};
301 $stats->{total_hits} += $num_hits;
302 $stats->{total_fetched} += $num_fetched;
304 foreach my $j ( 0..$#{ $set->{hits} } ) {
305 $self->handle_hit( $self->{offset} + $j, $server, $set->{hits}->[$j] );
310 my ( $self, $key, $direction ) = @_;
312 my $empty_flip = -1; # Determines the flip of ordering for records with empty sort keys.
314 foreach my $hit ( @{ $self->{results} } ) {
315 ( $hit->{sort_key} = $hit->{metadata}->{$key} || '' ) =~ s/\W//g;
318 $self->{results} = [ sort {
319 # Sort empty records at the end
320 return -$empty_flip unless $a->{sort_key};
321 return $empty_flip unless $b->{sort_key};
323 $direction * ( $a->{sort_key} cmp $b->{sort_key} );
324 } @{ $self->{results} } ];
328 my ( $self, $offset, $length ) = @_;
332 foreach my $i ( $offset..( $offset + $length - 1 ) ) {
333 push @subset, $self->{results}->[$i] if $self->{results}->[$i];