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
  28 use Koha::DateUtils qw( output_pref dt_from_string );
  29
  30 use vars qw(@ISA);
  31 use vars qw($debug $cgi_debug); # from C4::Debug, of course
  32 use vars qw($width);
  33
  34 BEGIN {
  35     $VERSION = 3.07.00.049;
  36     @ISA = qw(C4::Barcodes);
  37         $width = 4;
  38 }
  39
  40 sub db_max ($;$) {
  41         my $self = shift;
  42         my $query = "SELECT max(substring_index(barcode,'-',-1)) AS chunk,barcode FROM items WHERE barcode LIKE ? GROUP BY barcode";
  43                 # FIXME: unreasonably expensive query on large datasets
  44         my $sth = C4::Context->dbh->prepare($query);
  45         my ($iso);
  46         if (@_) {
  47                 my $input = shift;
  48         $iso = output_pref({ dt => dt_from_string( $input, 'iso' ), dateformat => 'iso', dateonly => 1 }); # try to set the date w/ 2nd arg
  49                 unless ($iso) {
  50                         warn "Failed to create 'iso' Dates object with input '$input'.  Reverting to today's date.";
  51             $iso = output_pref({ dt => dt_from_string, dateformat => 'iso', dateonly => 1 }); # failover back to today
  52                 }
  53         } else {
  54         $iso = output_pref({ dt => dt_from_string, dateformat => 'iso', dateonly => 1 });
  55         }
  56         my $year = substr($iso,0,4);    # YYYY
  57         $sth->execute("$year-%");
  58         my $row = $sth->fetchrow_hashref;
  59         warn "barcode db_max (annual format, year $year): $row->{barcode}" if $debug;
  60         return $row->{barcode};
  61 }
  62
  63 sub initial () {
  64         my $self = shift;
  65     return substr(output_pref({ dt => dt_from_string, dateformat => 'iso', dateonly => 1 }), 0, 4 ) .'-'. sprintf('%'."$width.$width".'d', 1);
  66 }
  67
  68 sub parse ($;$) {
  69         my $self = shift;
  70     my $barcode = (@_) ? shift : $self->value;
  71         unless ($barcode =~ /(\d{4}-)(\d+)$/) {    # non-greedy match in first part
  72                 carp "Barcode '$barcode' has no incrementing part!";
  73                 return ($barcode,undef,undef);
  74         }
  75         $debug and warn "Barcode '$barcode' parses into: '$1', '$2', ''";
  76         return ($1,$2,'');  # the third part is in anticipation of barcodes that include checkdigits
  77 }
  78 sub width ($;$) {
  79         my $self = shift;
  80         (@_) and $width = shift;        # hitting the class variable.
  81         return $width;
  82 }
  83 sub process_head($$;$$) {       # (self,head,whole,specific)
  84         my ($self,$head,$whole,$specific) = @_;
  85         $specific and return $head;     # if this is built off an existing barcode, just return the head unchanged.
  86     return substr(output_pref({ dt => dt_from_string, dateformat => 'iso', dateonly => 1 }), 0, 4 ) . '-'; # else get new YYYY-
  87 }
  88
  89 sub new_object {
  90         my $class = shift;
  91         my $type = ref($class) || $class;
  92         my $self = $type->default_self('annual');
  93         return bless $self, $type;
  94 }
  95
  96 1;
  97 __END__
  98