C4/Creators/Batch.pm

   1 package C4::Creators::Batch;
   2
   3 use strict;
   4 use warnings;
   5
   6 use autouse 'Data::Dumper' => qw(Dumper);
   7
   8 use C4::Context;
   9 use C4::Debug;
  10
  11 BEGIN {
  12     use version; our $VERSION = qv('3.07.00.049');
  13 }
  14
  15 sub _check_params {
  16     my $given_params = {};
  17     my $exit_code = 0;
  18     my @valid_template_params = (
  19         'label_id',
  20         'batch_id',
  21         'item_number',
  22         'card_number',
  23         'branch_code',
  24         'creator',
  25     );
  26     if (scalar(@_) >1) {
  27         $given_params = {@_};
  28         foreach my $key (keys %{$given_params}) {
  29             if (!(grep m/$key/, @valid_template_params)) {
  30                 warn sprintf('Unrecognized parameter type of "%s".', $key);
  31                 $exit_code = 1;
  32             }
  33         }
  34     }
  35     else {
  36         if (!(grep m/$_/, @valid_template_params)) {
  37             warn sprintf('Unrecognized parameter type of %s', $_);
  38             $exit_code = 1;
  39         }
  40     }
  41     return $exit_code;
  42 }
  43
  44 sub new {
  45     my ($invocant) = shift;
  46     my $type = ref($invocant) || $invocant;
  47     my $self = {
  48         batch_id        => 0,
  49         items           => [],
  50         branch_code     => 'NB',
  51         batch_stat      => 0,   # False if any data has changed and the db has not been updated
  52         @_,
  53     };
  54     my $sth = C4::Context->dbh->prepare("SELECT MAX(batch_id) FROM creator_batches;");
  55     $sth->execute();
  56     my $batch_id = $sth->fetchrow_array;
  57     $self->{'batch_id'} = ++$batch_id unless $self->{'batch_id'} != 0;      # this allows batch_id to be passed in for individual label printing
  58     bless ($self, $type);
  59     return $self;
  60 }
  61
  62 sub add_item {
  63     my $self = shift;
  64     my $number = shift;
  65     ref($self) =~ m/C4::(.+)::.+$/;
  66     my $number_type = ($1 eq 'Patroncards' ? 'borrower_number' : 'item_number');
  67     my $query = "INSERT INTO creator_batches (batch_id, $number_type, branch_code, creator) VALUES (?,?,?,?);";
  68     my $sth = C4::Context->dbh->prepare($query);
  69 #    $sth->{'TraceLevel'} = 3;
  70     $sth->execute($self->{'batch_id'}, $number, $self->{'branch_code'}, $1);
  71     if ($sth->err) {
  72         warn sprintf('Database returned the following error on attempted INSERT: %s', $sth->errstr);
  73         return -1;
  74     }
  75     $query = "SELECT max(label_id) FROM creator_batches WHERE batch_id=? AND $number_type=? AND branch_code=?;";
  76     my $sth1 = C4::Context->dbh->prepare($query);
  77     $sth1->execute($self->{'batch_id'}, $number, $self->{'branch_code'});
  78     my $label_id = $sth1->fetchrow_array;
  79     push (@{$self->{'items'}}, {$number_type => $number, label_id => $label_id});
  80     $self->{'batch_stat'} = 1;
  81     return 0;
  82 }
  83
  84 sub get_attr {
  85     my $self = shift;
  86     return $self->{$_[0]};
  87 }
  88
  89 sub remove_item {
  90     my $self = shift;
  91     my $label_id = shift;
  92     my $query = "DELETE FROM creator_batches WHERE label_id=? AND batch_id=?;";
  93     my $sth = C4::Context->dbh->prepare($query);
  94 #    $sth->{'TraceLevel'} = 3;
  95     $sth->execute($label_id, $self->{'batch_id'});
  96     if ($sth->err) {
  97         warn sprintf('Database returned the following error on attempted DELETE: %s', $sth->errstr);
  98         return -1;
  99     }
 100     @{$self->{'items'}} = grep{$_->{'label_id'} != $label_id} @{$self->{'items'}};
 101     $self->{'batch_stat'} = 1;
 102     return 0;
 103 }
 104
 105 # FIXME: This method is effectively useless the way the current add_item method is written. Ideally, the items should be added to the object
 106 #       and then the save method called. This does not work well in practice due to the inability to pass objects accross cgi script calls.
 107 #       I'm leaving it here because it should be here and for consistency's sake and once memcached support is fully implimented this should be as well. -cnighswonger
 108 #
 109 #=head2 $batch->save()
 110 #
 111 #    Invoking the I<save> method attempts to insert the batch into the database. The method returns
 112 #    the new record batch_id upon success and -1 upon failure (This avoids conflicting with a record
 113 #    batch_id of 1). Errors are logged to the Apache log.
 114 #
 115 #    example:
 116 #        my $exitstat = $batch->save(); # to save the record behind the $batch object
 117 #
 118 #=cut
 119 #
 120 #sub save {
 121 #    my $self = shift;
 122 #    foreach my $item_number (@{$self->{'items'}}) {
 123 #        my $query = "INSERT INTO creator_batches (batch_id, item_number, branch_code) VALUES (?,?,?);";
 124 #        my $sth1 = C4::Context->dbh->prepare($query);
 125 #        $sth1->execute($self->{'batch_id'}, $item_number->{'item_number'}, $self->{'branch_code'});
 126 #        if ($sth1->err) {
 127 #            warn sprintf('Database returned the following error on attempted INSERT: %s', $sth1->errstr);
 128 #            return -1;
 129 #        }
 130 #        $self->{'batch_stat'} = 1;
 131 #        return $self->{'batch_id'};
 132 #    }
 133 #}
 134
 135 sub retrieve {
 136     my $invocant = shift;
 137     my %opts = @_;
 138     my $type = ref($invocant) || $invocant;
 139     $type =~ m/C4::(.+)::.+$/;
 140     my $number_type = ($1 eq 'Patroncards' ? 'borrower_number' : 'item_number');
 141     my $record_flag = 0;
 142     my $query = "SELECT * FROM creator_batches WHERE batch_id = ? ORDER BY label_id";
 143     my $sth = C4::Context->dbh->prepare($query);
 144 #    $sth->{'TraceLevel'} = 3;
 145     $sth->execute($opts{'batch_id'});
 146     my $self = {
 147         batch_id        => $opts{'batch_id'},
 148         items           => [],
 149     };
 150     while (my $record = $sth->fetchrow_hashref) {
 151         $self->{'branch_code'} = $record->{'branch_code'};
 152         $self->{'creator'} = $record->{'creator'};
 153         push (@{$self->{'items'}}, {$number_type => $record->{$number_type}, label_id => $record->{'label_id'}});
 154         $record_flag = 1;       # true if one or more rows were retrieved
 155     }
 156     return -2 if $record_flag == 0;     # a hackish sort of way of indicating no such record exists
 157     if ($sth->err) {
 158         warn sprintf('Database returned the following error on attempted SELECT: %s', $sth->errstr);
 159         return -1;
 160     }
 161     $self->{'batch_stat'} = 1;
 162     bless ($self, $type);
 163     return $self;
 164 }
 165
 166 sub delete {
 167     my $self = {};
 168     my %opts = ();
 169     my $call_type = '';
 170     my @query_params = ();
 171     if (ref($_[0])) {
 172         $self = shift;  # check to see if this is a method call
 173         $call_type = 'C4::Labels::Batch->delete'; # seems hackish
 174         @query_params = ($self->{'batch_id'}, $self->{'branch_code'});
 175     }
 176     else {
 177         shift @_;
 178         %opts = @_;
 179         $call_type = 'C4::Labels::Batch::delete';
 180         @query_params = ($opts{'batch_id'}, $opts{'branch_code'});
 181     }
 182     if ($query_params[0] eq '') {   # If there is no template id then we cannot delete it
 183         warn sprintf('%s : Cannot delete batch as the batch id is invalid or non-existent.', $call_type);
 184         return -1;
 185     }
 186     my $query = "DELETE FROM creator_batches WHERE batch_id = ? AND branch_code =?";
 187     my $sth = C4::Context->dbh->prepare($query);
 188 #    $sth->{'TraceLevel'} = 3;
 189     $sth->execute(@query_params);
 190     if ($sth->err) {
 191         warn sprintf('%s : Database returned the following error on attempted INSERT: %s', $call_type, $sth->errstr);
 192         return -1;
 193     }
 194     return 0;
 195 }
 196
 197 sub remove_duplicates {
 198     my $self = shift;
 199     my %seen=();
 200     my $query = "DELETE FROM creator_batches WHERE label_id = ?;"; # ORDER BY timestamp ASC LIMIT ?;";
 201     my $sth = C4::Context->dbh->prepare($query);
 202     my @duplicate_items = grep{
 203         $_->{'item_number'}
 204             ? $seen{$_->{'item_number'}}++
 205             : $seen{$_->{'borrower_number'}}++
 206     } @{$self->{'items'}};
 207     foreach my $item (@duplicate_items) {
 208         $sth->execute($item->{'label_id'});
 209         if ($sth->err) {
 210             warn sprintf('Database returned the following error on attempted DELETE for label_id %s: %s', $item->{'label_id'}, $sth->errstr);
 211             return -1;
 212         }
 213         $sth->finish(); # Per DBI.pm docs: "If execute() is called on a statement handle that's still active ($sth->{Active} is true) then it should effectively call finish() to tidy up the previous execution results before starting this new execution."
 214         @{$self->{'items'}} = grep{$_->{'label_id'} != $item->{'label_id'}} @{$self->{'items'}};  # the correct label/item must be removed from the current batch object as well; this should be done *after* each sql DELETE in case the DELETE fails
 215     }
 216     return scalar(@duplicate_items);
 217 }
 218
 219 1;
 220 __END__
 221
 222 =head1 NAME
 223
 224 C4::Labels::Batch - A class for creating and manipulating batch objects in Koha
 225
 226 =head1 ABSTRACT
 227
 228 This module provides methods for creating, and otherwise manipulating batch objects used by Koha to create and export labels.
 229
 230 =head1 METHODS
 231
 232 =head2 new()
 233
 234     Invoking the I<new> method constructs a new batch object with no items. It is possible to pre-populate the batch with items and a branch code by passing them
 235     as in the second example below.
 236
 237     B<NOTE:> The items list must be an arrayref pointing to an array of hashes containing a key/data pair after this fashion: {item_number => item_number}. The order of
 238     the array elements determines the order of the items in the batch.
 239
 240     example:
 241         C<my $batch = C4::Labels::Batch->new(); # Creates and returns a new batch object>
 242
 243         C<my $batch = C4::Labels::Batch->new(items => $arrayref, branch_code => branch_code) #    Creates and returns a new batch object containing the items passed in
 244             with the branch code passed in.>
 245
 246     B<NOTE:> This batch is I<not> written to the database until C<$batch->save()> is invoked. You have been warned!
 247
 248 =head2 $batch->add_item(item_number => $item_number, branch_code => $branch_code)
 249
 250     Invoking the I<add_item> method will add the supplied item to the batch object.
 251
 252     example:
 253         $batch->add_item(item_number => $item_number, branch_code => $branch_code);
 254
 255 =head2 $batch->get_attr($attribute)
 256
 257     Invoking the I<get_attr> method will return the requested attribute.
 258
 259     example:
 260         my @items = $batch->get_attr('items');
 261
 262 =head2 $batch->remove_item($item_number)
 263
 264     Invoking the I<remove_item> method will remove the supplied item number from the batch object.
 265
 266     example:
 267         $batch->remove_item($item_number);
 268
 269 =head2 C4::Labels::Batch->retrieve(batch_id => $batch_id)
 270
 271     Invoking the I<retrieve> method constructs a new batch object containing the current values for batch_id. The method returns a new object upon success and 1 upon failure.
 272     Errors are logged to the Apache log.
 273
 274     examples:
 275
 276         my $batch = C4::Labels::Batch->retrieve(batch_id => 1); # Retrieves batch 1 and returns an object containing the record
 277
 278 =head2 delete()
 279
 280     Invoking the delete method attempts to delete the template from the database. The method returns -1 upon failure. Errors are logged to the Apache log.
 281     NOTE: This method may also be called as a function and passed a key/value pair simply deleteing that batch from the database. See the example below.
 282
 283     examples:
 284         my $exitstat = $batch->delete(); # to delete the record behind the $batch object
 285         my $exitstat = C4::Labels::Batch->delete(batch_id => 1); # to delete batch 1
 286
 287 =head2 remove_duplicates()
 288
 289     Invoking the remove_duplicates method attempts to remove duplicate items in the batch from the database. The method returns the count of duplicate records removed upon
 290     success and -1 upon failure. Errors are logged to the Apache log.
 291     NOTE: This method may also be called as a function and passed a key/value pair removing duplicates in the batch passed in. See the example below.
 292
 293     examples:
 294         my $remove_count = $batch->remove_duplicates(); # to remove duplicates the record behind the $batch object
 295         my $remove_count = C4::Labels::Batch->remove_duplicates(batch_id => 1); # to remove duplicates in batch 1
 296
 297 =head1 AUTHOR
 298
 299 Chris Nighswonger <cnighswonger AT foundations DOT edu>
 300
 301 =head1 COPYRIGHT
 302
 303 Copyright 2009 Foundations Bible College.
 304
 305 =head1 LICENSE
 306
 307 This file is part of Koha.
 308
 309 Koha is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software
 310 Foundation; either version 2 of the License, or (at your option) any later version.
 311
 312 You should have received a copy of the GNU General Public License along with Koha; if not, write to the Free Software Foundation, Inc., 51 Franklin Street,
 313 Fifth Floor, Boston, MA 02110-1301 USA.
 314
 315 =head1 DISCLAIMER OF WARRANTY
 316
 317 Koha is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 318 A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
 319
 320 =cut
 321