WebPAC/Input/MARC.pm

package WebPAC::Input::MARC;

use warnings;
use strict;

use MARC::Fast 0.03;

=head1 NAME

WebPAC::Input::MARC - support for MARC database files

=head1 VERSION

Version 0.05

=cut

our $VERSION = '0.05';


=head1 SYNOPSIS

Open USMARC, Unimarc or any other file format that has same internal
structure using C<MARC::Fast>.

 my $marc = new WebPAC::Input::MARC();
 $marc->open( path => '/path/to/marc.iso' );

=head1 FUNCTIONS

=head2 open_db

Returns handle to database and size in records

  my ($db,$size) = $open_db(
        path => '/path/to/marc.iso',
        filter => \&code_ref,
  }

=cut

sub open_db {
        my $self = shift;

        my $arg = {@_};

        my $log = $self->_get_logger();

        $log->info("opening MARC database '$arg->{path}'");

        my $db = new MARC::Fast(
                marcdb => $arg->{path},
                hash_filter => $arg->{filter},
        );
        my $db_size = $db->count - 1;   # FIXME

        $self->{_marc_size} = $db_size;
        $self->{_marc_db} = $db;

        return ($db, $db_size);
}

=head2 fetch_rec

Return record with ID C<$mfn> from database

  my $rec = $self->fetch_rec( $mfn );

}

=cut

sub fetch_rec {
        my $self = shift;

        my $mfn = shift;

        if ($mfn > $self->{_marc_size}) {
                $self->_get_logger()->warn("seek beyond database size $self->{_marc_size} to $mfn");
        } else {
                my $row = $self->{_marc_db}->to_hash($mfn);
                push @{$row->{'000'}}, $mfn;
                return $row;
        }
}

=head1 PROPERTIES

=head2 _marc_size

Store size of MARC database

  print $self->{_marc_size};


=head1 AUTHOR

Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >>

=head1 COPYRIGHT & LICENSE

Copyright 2005 Dobrica Pavlinusic, All Rights Reserved.

This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.

=cut

1; # End of WebPAC::Input::MARC
1	package WebPAC::Input::MARC;
2
3	use warnings;
4	use strict;
5
6	use MARC::Fast 0.03;
7
8	=head1 NAME
9
10	WebPAC::Input::MARC - support for MARC database files
11
12	=head1 VERSION
13
14	Version 0.05
15
16	=cut
17
18	our $VERSION = '0.05';
19
20
21	=head1 SYNOPSIS
22
23	Open USMARC, Unimarc or any other file format that has same internal
24	structure using C<MARC::Fast>.
25
26	my $marc = new WebPAC::Input::MARC();
27	$marc->open( path => '/path/to/marc.iso' );
28
29	=head1 FUNCTIONS
30
31	=head2 open_db
32
33	Returns handle to database and size in records
34
35	my ($db,$size) = $open_db(
36	path => '/path/to/marc.iso',
37	filter => \&code_ref,
38	}
39
40	=cut
41
42	sub open_db {
43	my $self = shift;
44
45	my $arg = {@_};
46
47	my $log = $self->_get_logger();
48
49	$log->info("opening MARC database '$arg->{path}'");
50
51	my $db = new MARC::Fast(
52	marcdb => $arg->{path},
53	hash_filter => $arg->{filter},
54	);
55	my $db_size = $db->count - 1; # FIXME
56
57	$self->{_marc_size} = $db_size;
58	$self->{_marc_db} = $db;
59
60	return ($db, $db_size);
61	}
62
63	=head2 fetch_rec
64
65	Return record with ID C<$mfn> from database
66
67	my $rec = $self->fetch_rec( $mfn );
68
69	}
70
71	=cut
72
73	sub fetch_rec {
74	my $self = shift;
75
76	my $mfn = shift;
77
78	if ($mfn > $self->{_marc_size}) {
79	$self->_get_logger()->warn("seek beyond database size $self->{_marc_size} to $mfn");
80	} else {
81	my $row = $self->{_marc_db}->to_hash($mfn);
82	push @{$row->{'000'}}, $mfn;
83	return $row;
84	}
85	}
86
87	=head1 PROPERTIES
88
89	=head2 _marc_size
90
91	Store size of MARC database
92
93	print $self->{_marc_size};
94
95
96
97	=head1 AUTHOR
98
99	Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >>
100
101	=head1 COPYRIGHT & LICENSE
102
103	Copyright 2005 Dobrica Pavlinusic, All Rights Reserved.
104
105	This program is free software; you can redistribute it and/or modify it
106	under the same terms as Perl itself.
107
108	=cut
109
110	1; # End of WebPAC::Input::MARC