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File:C4/Barcodes/annual.pm
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1package C4::Barcodes::annual;
2
3# Copyright 2008 LibLime
4#
5# This file is part of Koha.
6#
7# Koha is free software; you can redistribute it and/or modify it under the
8# terms of the GNU General Public License as published by the Free Software
9# Foundation; either version 2 of the License, or (at your option) any later
10# version.
11#
12# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
13# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
14# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
15#
16# You should have received a copy of the GNU General Public License along
17# with Koha; if not, write to the Free Software Foundation, Inc.,
18# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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use strict;
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use warnings;
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use Carp;
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use C4::Context;
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use C4::Debug;
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use C4::Dates;
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use vars qw($VERSION @ISA);
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use vars qw($debug $cgi_debug); # from C4::Debug, of course
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use vars qw($width);
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33BEGIN {
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    $VERSION = 0.01;
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    @ISA = qw(C4::Barcodes);
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        $width = 4;
37}
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39sub db_max ($;$) {
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        my $self = shift;
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        my $query = "SELECT max(substring_index(barcode,'-',-1)) AS chunk,barcode FROM items WHERE barcode LIKE ? GROUP BY barcode";
42                # FIXME: unreasonably expensive query on large datasets
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        my $sth = C4::Context->dbh->prepare($query);
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        my ($iso);
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        if (@_) {
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                my $input = shift;
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                $iso = C4::Dates->new($input,'iso')->output('iso'); # try to set the date w/ 2nd arg
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                unless ($iso) {
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                        warn "Failed to create 'iso' Dates object with input '$input'. Reverting to today's date.";
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                        $iso = C4::Dates->new->output('iso'); # failover back to today
51                }
52        } else {
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                $iso = C4::Dates->new->output('iso');
54        }
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        my $year = substr($iso,0,4); # YYYY
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        $sth->execute("$year-%");
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        my $row = $sth->fetchrow_hashref;
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        warn "barcode db_max (annual format, year $year): $row->{barcode}" if $debug;
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        return $row->{barcode};
60}
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62sub initial () {
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        my $self = shift;
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        return substr(C4::Dates->new->output('iso'),0,4) .'-'. sprintf('%'."$width.$width".'d', 1);
65}
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67sub parse ($;$) {
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        my $self = shift;
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    my $barcode = (@_) ? shift : $self->value;
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        unless ($barcode =~ /(\d{4}-)(\d+)$/) { # non-greedy match in first part
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                carp "Barcode '$barcode' has no incrementing part!";
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                return ($barcode,undef,undef);
73        }
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        $debug and warn "Barcode '$barcode' parses into: '$1', '$2', ''";
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        return ($1,$2,''); # the third part is in anticipation of barcodes that include checkdigits
76}
77sub width ($;$) {
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        my $self = shift;
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        (@_) and $width = shift; # hitting the class variable.
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        return $width;
81}
82sub process_head($$;$$) { # (self,head,whole,specific)
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        my ($self,$head,$whole,$specific) = @_;
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        $specific and return $head; # if this is built off an existing barcode, just return the head unchanged.
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        return substr(C4::Dates->new->output('iso'),0,4) . '-'; # else get new YYYY-
86}
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88sub new_object {
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        my $class = shift;
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        my $type = ref($class) || $class;
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        my $self = $type->default_self('annual');
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        return bless $self, $type;
93}
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951;