C4/Barcodes/annual.pm

   1 package 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
   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.
  11 #
  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.
  16 #
  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>.
  19
  20 use strict;
  21 use warnings;
  22
  23 use Carp;
  24
  25 use C4::Context;
  26 use C4::Debug;
  27 use C4::Dates;
  28
  29 use vars qw($VERSION @ISA);
  30 use vars qw($debug $cgi_debug); # from C4::Debug, of course
  31 use vars qw($width);
  32
  33 BEGIN {
  34     $VERSION = 3.07.00.049;
  35     @ISA = qw(C4::Barcodes);
  36         $width = 4;
  37 }
  38
  39 sub db_max ($;$) {
  40         my $self = shift;
  41         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
  43         my $sth = C4::Context->dbh->prepare($query);
  44         my ($iso);
  45         if (@_) {
  46                 my $input = shift;
  47                 $iso = C4::Dates->new($input,'iso')->output('iso'); # try to set the date w/ 2nd arg
  48                 unless ($iso) {
  49                         warn "Failed to create 'iso' Dates object with input '$input'.  Reverting to today's date.";
  50                         $iso = C4::Dates->new->output('iso');   # failover back to today
  51                 }
  52         } else {
  53                 $iso = C4::Dates->new->output('iso');
  54         }
  55         my $year = substr($iso,0,4);    # YYYY
  56         $sth->execute("$year-%");
  57         my $row = $sth->fetchrow_hashref;
  58         warn "barcode db_max (annual format, year $year): $row->{barcode}" if $debug;
  59         return $row->{barcode};
  60 }
  61
  62 sub initial () {
  63         my $self = shift;
  64         return substr(C4::Dates->new->output('iso'),0,4) .'-'. sprintf('%'."$width.$width".'d', 1);
  65 }
  66
  67 sub parse ($;$) {
  68         my $self = shift;
  69     my $barcode = (@_) ? shift : $self->value;
  70         unless ($barcode =~ /(\d{4}-)(\d+)$/) {    # non-greedy match in first part
  71                 carp "Barcode '$barcode' has no incrementing part!";
  72                 return ($barcode,undef,undef);
  73         }
  74         $debug and warn "Barcode '$barcode' parses into: '$1', '$2', ''";
  75         return ($1,$2,'');  # the third part is in anticipation of barcodes that include checkdigits
  76 }
  77 sub width ($;$) {
  78         my $self = shift;
  79         (@_) and $width = shift;        # hitting the class variable.
  80         return $width;
  81 }
  82 sub process_head($$;$$) {       # (self,head,whole,specific)
  83         my ($self,$head,$whole,$specific) = @_;
  84         $specific and return $head;     # if this is built off an existing barcode, just return the head unchanged.
  85         return substr(C4::Dates->new->output('iso'),0,4) . '-'; # else get new YYYY-
  86 }
  87
  88 sub new_object {
  89         my $class = shift;
  90         my $type = ref($class) || $class;
  91         my $self = $type->default_self('annual');
  92         return bless $self, $type;
  93 }
  94
  95 1;
  96 __END__
  97