use warnings;
use strict;
-use WebPAC::Common;
-use base qw/WebPAC::Input WebPAC::Common/;
+use WebPAC::Input;
=head1 NAME
-WebPAC::Input::ISIS - support for CDS/ISIS source files
+WebPAC::Input::ISIS - support for CDS/ISIS database files
=head1 VERSION
-Version 0.01
+Version 0.03
=cut
-our $VERSION = '0.01';
+our $VERSION = '0.03';
-# auto-configure
-
-my ($have_biblio_isis, $have_openisis) = (0,0);
-
-eval "use Biblio::Isis 0.13;";
-unless ($@) {
- $have_biblio_isis = 1
-} else {
- eval "use OpenIsis;";
- $have_openisis = 1 unless ($@);
-}
-
=head1 SYNOPSIS
-Open CDS/ISIS, WinISIS or IsisMarc database using Biblio::Isis or OpenIsis
-module and read all records to memory.
+Open CDS/ISIS, WinISIS or IsisMarc database using C<Biblio::Isis> or
+C<OpenIsis> module and read all records to memory.
my $isis = new WebPAC::Input::ISIS();
- $isis->open( filename => '/path/to/ISIS/ISIS' );
+ $isis->open( path => '/path/to/ISIS/ISIS' );
=head1 FUNCTIONS
-=head2 open
+=head2 init
+
+Autoconfigure this module to use C<Biblio::Isis> or C<OpenIsis>.
-This function will read whole database in memory and produce lookups.
+=cut
- $isis->open(
- filename => '/data/ISIS/ISIS',
- code_page => '852',
- limit_mfn => 500,
- start_mfn => 6000,
- lookup => $lookup_obj,
- );
+sub init {
+ my $self = shift;
-By default, ISIS code page is assumed to be C<852>.
+ eval "use Biblio::Isis;";
+ unless ($@) {
+ $self->{have_biblio_isis} = 1
+ } else {
+ eval "use OpenIsis;";
+ $self->{have_openisis} = 1 unless ($@);
+ }
+}
-If optional parametar C<start_mfn> is set, this will be first MFN to read
-from database (so you can skip beginning of your database if you need to).
+=head2 open_db
-If optional parametar C<limit_mfn> is set, it will read just 500 records
-from database in example above.
+Returns handle to database
-Returns number of last record read into memory (size of database, really).
+ my $db = $open_db(
+ path => '/path/to/LIBRI'
+ }
=cut
-sub open {
+sub open_db {
my $self = shift;
+
my $arg = {@_};
my $log = $self->_get_logger();
- $log->logcroak("need filename") if (! $arg->{'filename'});
- my $code_page = $arg->{'code_page'} || '852';
-
- $log->logdie("can't find database ",$arg->{'filename'}) unless (glob($arg->{'filename'}.'.*'));
-
- # store data in object
- $self->{'isis_filename'} = $arg->{'filename'};
- $self->{'isis_code_page'} = $code_page;
-
- #$self->{'isis_code_page'} = $code_page;
-
- # create Text::Iconv object
- my $cp = Text::Iconv->new($code_page,$self->{'code_page'});
+ $log->info("opening ISIS database '$arg->{path}'");
- $log->info("reading ISIS database '",$arg->{'filename'},"'");
- $log->debug("isis code page: $code_page");
+ my ($isis_db,$db_size);
- my ($isis_db,$maxmfn);
-
- if ($have_openisis) {
+ if ($self->{have_openisis}) {
$log->debug("using OpenIsis perl bindings");
- $isis_db = OpenIsis::open($arg->{'filename'});
- $maxmfn = OpenIsis::maxRowid( $isis_db ) || 1;
- } elsif ($have_biblio_isis) {
+ $isis_db = OpenIsis::open($arg->{path});
+ $db_size = OpenIsis::maxRowid( $isis_db ) || 1;
+ } elsif ($self->{have_biblio_isis}) {
$log->debug("using Biblio::Isis");
use Biblio::Isis;
$isis_db = new Biblio::Isis(
- isisdb => $arg->{'filename'},
+ isisdb => $arg->{path},
include_deleted => 1,
hash_filter => sub {
my $l = shift || return;
- $l = $cp->convert($l);
+ $l = $self->{iconv}->convert($l) if ($self->{iconv});
return $l;
},
- );
- $maxmfn = $isis_db->count;
+ ) or $log->logdie("can't find database $arg->{path}");
- unless ($maxmfn) {
- $log->logwarn("no records in database ", $arg->{'filename'}, ", skipping...");
- return;
- }
+ $db_size = $isis_db->count;
} else {
$log->logdie("Can't find supported ISIS library for perl. I suggent that you install Bilbio::Isis from CPAN.");
}
-
- my $startmfn = 1;
-
- if (my $s = $self->{'start_mfn'}) {
- $log->info("skipping to MFN $s");
- $startmfn = $s;
- } else {
- $self->{'start_mfn'} = $startmfn;
- }
-
- $maxmfn = $startmfn + $self->{limit_mfn} if ($self->{limit_mfn});
-
- $log->info("processing ",($maxmfn-$startmfn)." records using ",( $have_openisis ? 'OpenIsis' : 'Biblio::Isis'));
-
-
- # read database
- for (my $mfn = $startmfn; $mfn <= $maxmfn; $mfn++) {
-
- $log->debug("mfn: $mfn\n");
-
- my $rec;
-
- if ($have_openisis) {
-
- # read record using OpenIsis
- my $row = OpenIsis::read( $isis_db, $mfn );
- foreach my $k (keys %{$row}) {
- if ($k ne "mfn") {
- foreach my $l (@{$row->{$k}}) {
- $l = $cp->convert($l);
- # has subfields?
- my $val;
- if ($l =~ m/\^/) {
- foreach my $t (split(/\^/,$l)) {
- next if (! $t);
- $val->{substr($t,0,1)} = substr($t,1);
- }
- } else {
- $val = $l;
- }
-
- push @{$rec->{$k}}, $val;
- }
- } else {
- push @{$rec->{'000'}}, $mfn;
- }
- }
-
- } elsif ($have_biblio_isis) {
- $rec = $isis_db->to_hash($mfn);
- } else {
- $log->logdie("hum? implementation missing?");
- }
-
- $log->confess("record $mfn empty?") unless ($rec);
-
- # store
- if ($self->{'low_mem'}) {
- $self->{'db'}->put($mfn, $rec);
- } else {
- $self->{'data'}->{$mfn} = $rec;
- }
-
- # create lookup
- $self->{'lookup'}->add( $rec ) if ($self->{'lookup'} && can($self->{'lookup'}->add));
-
- $self->progress_bar($mfn,$maxmfn);
-
- }
-
- $self->{'current_mfn'} = -1;
- $self->{'last_pcnt'} = 0;
-
- $log->debug("max mfn: $maxmfn");
-
- # store max mfn and return it.
- return $self->{'max_mfn'} = $maxmfn;
+ return ($isis_db, $db_size);
}
=head2 fetch_rec
-Fetch next record from database. It will also displays progress bar.
+Return record with ID C<$mfn> from database
- my $rec = $webpac->fetch_rec;
+ my $rec = $self->fetch_rec( $db, $mfn );
-You should rearly have the need to call this function directly. Instead use
-C<fetch_data_structure> which returns normalised data.
+}
=cut
sub fetch_rec {
my $self = shift;
- my $log = $self->_get_logger();
+ my ($isis_db, $mfn) = @_;
- $log->logconfess("it seems that you didn't load database!") unless ($self->{'current_mfn'});
+ my $rec;
- if ($self->{'current_mfn'} == -1) {
- $self->{'current_mfn'} = $self->{'start_mfn'};
- } else {
- $self->{'current_mfn'}++;
- }
+ if ($self->{have_openisis}) {
- my $mfn = $self->{'current_mfn'};
+ # read record using OpenIsis
+ my $row = OpenIsis::read( $isis_db, $mfn );
- if ($mfn > $self->{'max_mfn'}) {
- $self->{'current_mfn'} = $self->{'max_mfn'};
- $log->debug("at EOF");
- return;
- }
-
- $self->progress_bar($mfn,$self->{'max_mfn'});
+ # convert record to hash
+ foreach my $k (keys %{$row}) {
+ if ($k ne "mfn") {
+ foreach my $l (@{$row->{$k}}) {
+ $l = $self->{iconv}->convert($l) if ($self->{iconv});
+ # has subfields?
+ my $val;
+ if ($l =~ m/\^/) {
+ foreach my $t (split(/\^/,$l)) {
+ next if (! $t);
+ $val->{substr($t,0,1)} = substr($t,1);
+ }
+ } else {
+ $val = $l;
+ }
+ push @{$rec->{$k}}, $val;
+ }
+ } else {
+ push @{$rec->{'000'}}, $mfn;
+ }
+ }
- if ($self->{'low_mem'}) {
- return $self->{'db'}->get($mfn);
+ } elsif ($self->{have_biblio_isis}) {
+ $rec = $isis_db->to_hash($mfn);
} else {
- return $self->{'data'}->{$mfn};
+ $self->_get_logger()->logdie("hum? implementation missing?");
}
-}
-
-=head2 fetch_data_structure
-
-Fetch data structure of next record from database.
-
- my @ds = $webpac->fetch_data_structure;
-
-=cut
-
-sub fetch_data_structure {
- my $self = shift;
-
- return $self->data_structure(
- $self->fetch_rec(@_)
- );
-}
-
-=head2 mfn
-
-Returns current record number (MFN).
- print $webpac->mfn;
-
-=cut
-
-sub mfn {
- my $self = shift;
- return $self->{'current_mfn'};
+ return $rec;
}
=head1 AUTHOR
projects / webpac2 / blobdiff