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} = $db_size; |
58 |
|
59 |
return ($db, $db_size); |
60 |
} |
61 |
|
62 |
=head2 fetch_rec |
63 |
|
64 |
Return record with ID C<$mfn> from database |
65 |
|
66 |
my $rec = $self->fetch_rec( $db, $mfn ); |
67 |
|
68 |
} |
69 |
|
70 |
=cut |
71 |
|
72 |
sub fetch_rec { |
73 |
my $self = shift; |
74 |
|
75 |
my ($db, $mfn) = @_; |
76 |
|
77 |
if ($mfn > $self->{_marc_size}) { |
78 |
$self->_get_logger()->warn("seek beyond database size $self->{_marc_size} to $mfn"); |
79 |
} else { |
80 |
my $row = $db->to_hash($mfn); |
81 |
push @{$row->{'000'}}, $mfn; |
82 |
return $row; |
83 |
} |
84 |
} |
85 |
|
86 |
=head1 PROPERTIES |
87 |
|
88 |
=head2 _marc_size |
89 |
|
90 |
Store size of MARC database |
91 |
|
92 |
print $self->{_marc_size}; |
93 |
|
94 |
|
95 |
|
96 |
=head1 AUTHOR |
97 |
|
98 |
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
99 |
|
100 |
=head1 COPYRIGHT & LICENSE |
101 |
|
102 |
Copyright 2005 Dobrica Pavlinusic, All Rights Reserved. |
103 |
|
104 |
This program is free software; you can redistribute it and/or modify it |
105 |
under the same terms as Perl itself. |
106 |
|
107 |
=cut |
108 |
|
109 |
1; # End of WebPAC::Input::MARC |