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File:C4/ClassSource.pm
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1package C4::ClassSource;
2
3# Copyright (C) 2007 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.
19
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use strict;
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use warnings;
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23require Exporter;
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use C4::Context;
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use C4::ClassSortRoutine;
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use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
28
29# set the version for version checking
30$VERSION = 3.00;
31
32 - 47
=head1 NAME

C4::ClassSources - handle classification sources in Koha

=head1 SYNOPSIS

use C4::ClassSource;

=head1 DESCRIPTION

This module deals with manipulating classification
sources and sorting rules.

=head1 FUNCTIONS

=cut
48
49
50@ISA = qw(Exporter);
51@EXPORT = qw(
52    &GetClassSources
53    &AddClassSource
54    &GetClassSource
55    &ModClassSource
56    &DelClassSource
57    &GetClassSortRules
58    &AddClassSortRule
59    &GetClassSortRule
60    &ModClassSortRule
61    &DelClassSortRule
62
63    &GetSourcesForSortRule
64    &GetClassSort
65
66);
67
68 - 90
=head2 GetClassSources

  my $sources = GetClassSources();

  Returns reference to hash of references to
  the class sources, keyed on cn_source.

=head3 Example

my $sources = GetClassSources();
my @sources = ();
foreach my $cn_source (sort keys %$sources) {
    my $source = $sources->{$cn_source};
    push @sources, 
      {  
        code        => $source->{'cn_source'},
        description => $source->{'description'},
        used => $source->{'used'},
        sortrule    => $source->{'class_sort_rule'}
      } 
}

=cut
91
92sub GetClassSources {
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    my %class_sources = ();
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    my $dbh = C4::Context->dbh;
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    my $sth = $dbh->prepare_cached("SELECT * FROM `class_sources`");
97
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    $sth->execute();
98
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    while (my $source = $sth->fetchrow_hashref) {
99
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        $class_sources{ $source->{'cn_source'} } = $source;
100    }
101
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    $sth->finish();
102
103
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    return \%class_sources;
104
105}
106
107 - 113
=head2 AddClassSource

  AddClassSource($cn_source, $description, $used, $class_sort_rule);

  Adds a class_sources row.

=cut
114
115sub AddClassSource {
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    my ($cn_source, $description, $used, $class_sort_rule) = @_;
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    my $dbh = C4::Context->dbh;
119
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    my $sth = $dbh->prepare_cached("INSERT INTO `class_sources`
120                                           (`cn_source`, `description`, `used`, `class_sort_rule`)
121                                           VALUES (?, ?, ?, ?)");
122
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    $sth->execute($cn_source, $description, $used, $class_sort_rule);
123
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    $sth->finish();
124
125}
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127 - 133
=head2 GetClassSource

  my $hashref = GetClassSource($cn_source);

  Retrieves a class_sources row by cn_source.

=cut
134
135sub GetClassSource {
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    my ($cn_source) = (@_);
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    my $dbh = C4::Context->dbh;
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    my $sth = $dbh->prepare_cached("SELECT * FROM `class_sources` WHERE cn_source = ?");
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    $sth->execute($cn_source);
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    my $row = $sth->fetchrow_hashref();
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    $sth->finish();
143
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    return $row;
144}
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=head2 ModClassSource 

  ModClassSource($cn_source, $description, $used, $class_sort_rule);

  Updates a class_sources row.

=cut
153
154sub ModClassSource {
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    my ($cn_source, $description, $used, $class_sort_rule) = @_;
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    my $dbh = C4::Context->dbh;
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    my $sth = $dbh->prepare_cached("UPDATE `class_sources`
159                                    SET `description` = ?,
160                                         `used` = ?,
161                                         `class_sort_rule` = ?
162                                    WHERE `cn_source` = ?");
163
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    $sth->execute($description, $used, $class_sort_rule, $cn_source);
164
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    $sth->finish();
165
166}
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=head2 DelClassSource 

  DelClassSource($cn_source);

  Deletes class_sources row.

=cut
175
176sub DelClassSource {
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    my ($cn_source) = @_;
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    my $dbh = C4::Context->dbh;
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    my $sth = $dbh->prepare_cached("DELETE FROM `class_sources` WHERE `cn_source` = ?");
181
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    $sth->execute($cn_source);
182
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    $sth->finish();
183
184}
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=head2 GetClassSortRules

  my $sort_rules = GetClassSortRules();

Returns reference to hash of references to
the class sorting rules, keyed on class_sort_rule

=head3 Example

  my $sort_rules = GetClassSortRules();
  my @sort_rules = ();
  foreach my $sort_rule (sort keys %$sort_rules) {
      my $sort_rule = $sort_rules->{$sort_rule};
      push @sort_rules,
          {
          rule        => $sort_rule->{'class_sort_rule'},
          description => $sort_rule->{'description'},
          sort_routine    => $sort_rule->{'sort_routine'}
      }
   }

=cut
208
209sub GetClassSortRules {
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    my %class_sort_rules = ();
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    my $dbh = C4::Context->dbh;
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    my $sth = $dbh->prepare_cached("SELECT * FROM `class_sort_rules`");
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    $sth->execute();
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    while (my $sort_rule = $sth->fetchrow_hashref) {
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        $class_sort_rules{ $sort_rule->{'class_sort_rule'} } = $sort_rule;
217    }
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    $sth->finish();
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    return \%class_sort_rules;
221
222}
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=head2 AddClassSortRule

  AddClassSortRule($class_sort_rule, $description, $sort_routine);

  Adds a class_sort_rules row.

=cut
231
232sub AddClassSortRule {
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    my ($class_sort_rule, $description, $sort_routine) = @_;
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    my $dbh = C4::Context->dbh;
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    my $sth = $dbh->prepare_cached("INSERT INTO `class_sort_rules`
237                                           (`class_sort_rule`, `description`, `sort_routine`)
238                                           VALUES (?, ?, ?)");
239
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    $sth->execute($class_sort_rule, $description, $sort_routine);
240
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    $sth->finish();
241
242}
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=head2 GetClassSortRule

  my $hashref = GetClassSortRule($class_sort_rule);

  Retrieves a class_sort_rules row by class_sort_rule.

=cut
251
252sub GetClassSortRule {
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    my ($class_sort_rule) = (@_);
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    my $dbh = C4::Context->dbh;
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    my $sth = $dbh->prepare_cached("SELECT * FROM `class_sort_rules` WHERE `class_sort_rule` = ?");
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    $sth->execute($class_sort_rule);
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    my $row = $sth->fetchrow_hashref();
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    $sth->finish();
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    return $row;
261}
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=head2 ModClassSortRule 

  ModClassSortRule($class_sort_rule, $description, $sort_routine);

  Updates a class_sort_rules row.

=cut
270
271sub ModClassSortRule {
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    my ($class_sort_rule, $description, $sort_routine) = @_;
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    my $dbh = C4::Context->dbh;
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    my $sth = $dbh->prepare_cached("UPDATE `class_sort_rules`
276                                    SET `description` = ?,
277                                         `sort_routine` = ?
278                                    WHERE `class_sort_rule` = ?");
279
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    $sth->execute($description, $sort_routine, $class_sort_rule);
280
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    $sth->finish();
281
282}
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=head2 DelClassSortRule 

  DelClassSortRule($class_sort_rule);

  Deletes class_sort_rules row.

=cut
291
292sub DelClassSortRule {
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    my ($class_sort_rule) = @_;
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    my $dbh = C4::Context->dbh;
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    my $sth = $dbh->prepare_cached("DELETE FROM `class_sort_rules` WHERE `class_sort_rule` = ?");
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    $sth->execute($class_sort_rule);
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    $sth->finish();
299
300}
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=head2 GetSourcesForSortRule

  my @source = GetSourcesForSortRule($class_sort_rule);

  Retrieves an array class_source.cn_rule for each source
  that uses the supplied $class_sort_rule.

=cut
310
311sub GetSourcesForSortRule {
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    my ($class_sort_rule) = @_;
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    my $dbh = C4::Context->dbh;
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    my $sth = $dbh->prepare_cached("SELECT cn_source FROM class_sources WHERE class_sort_rule = ?");
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    $sth->execute($class_sort_rule);
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    my @sources = ();
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    while (my ($source) = $sth->fetchrow_array()) {
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        push @sources, $source;
321    }
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    $sth->finish();
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    return @sources;
324
325}
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=head2 GetClassSort

  my $cn_sort = GetClassSort($cn_source, $cn_class, $cn_item);

Get the sort key corresponding to the classification part and item part
and the defined call number source.

=cut
335
336sub GetClassSort {
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    my ($cn_source, $cn_class, $cn_item) = @_;
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    my $source_ref = GetClassSource($cn_source);
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    unless (defined $source_ref) {
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        $source_ref = GetClassSource(C4::Context->preference("DefaultClassificationSource"));
343    }
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    my $routine = "";
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    if (defined $source_ref) {
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        my $rule_ref = GetClassSortRule($source_ref->{'class_sort_rule'});
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        if (defined $rule_ref) {
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            $routine = $rule_ref->{'sort_routine'};
349        }
350    }
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    return GetClassSortKey($routine, $cn_class, $cn_item);
353
354}
355
3561;
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=head1 AUTHOR

Koha Development Team <http://koha-community.org/>

=cut