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package C4::ClassSource;
# Copyright (C) 2007 LibLime
#
# This file is part of Koha.
#
# 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 Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# 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 A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Koha; if not, see <http://www.gnu.org/licenses>.
use strict;
use warnings;
require Exporter;
use C4::Context;
use C4::ClassSortRoutine;
use vars qw(@ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
=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
@ISA = qw(Exporter);
@EXPORT = qw(
&GetClassSources
&GetClassSource
&GetClassSortRule
&GetClassSort
);
=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
sub GetClassSources {
my %class_sources = ();
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("SELECT * FROM `class_sources`");
$sth->execute();
while (my $source = $sth->fetchrow_hashref) {
$class_sources{ $source->{'cn_source'} } = $source;
}
return \%class_sources;
}
=head2 GetClassSource
my $hashref = GetClassSource($cn_source);
Retrieves a class_sources row by cn_source.
=cut
sub GetClassSource {
my ($cn_source) = (@_);
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("SELECT * FROM `class_sources` WHERE cn_source = ?");
$sth->execute($cn_source);
my $row = $sth->fetchrow_hashref();
return $row;
}
=head2 GetClassSortRule
my $hashref = GetClassSortRule($class_sort_rule);
Retrieves a class_sort_rules row by class_sort_rule.
=cut
sub GetClassSortRule {
my ($class_sort_rule) = (@_);
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("SELECT * FROM `class_sort_rules` WHERE `class_sort_rule` = ?");
$sth->execute($class_sort_rule);
my $row = $sth->fetchrow_hashref();
return $row;
}
=head2 GetClassSort
my $cn_sort = GetClassSort($cn_source, $cn_class, $cn_item);
Get the sort key corresponding to the classification part and item part
and the defined call number source.
=cut
sub GetClassSort {
my ($cn_source, $cn_class, $cn_item) = @_;
my $source_ref = GetClassSource($cn_source);
unless (defined $source_ref) {
$source_ref = GetClassSource(C4::Context->preference("DefaultClassificationSource"));
}
my $routine = "";
if (defined $source_ref) {
my $rule_ref = GetClassSortRule($source_ref->{'class_sort_rule'});
if (defined $rule_ref) {
$routine = $rule_ref->{'sort_routine'};
}
}
return GetClassSortKey($routine, $cn_class, $cn_item);
}
1;
=head1 AUTHOR
Koha Development Team <http://koha-community.org/>
=cut