# Selima Website Content Management System
# FetchRec.pm: The subroutine to fetch a record from a database table.

#  Copyright (c) 2004-2018 imacat.
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.

# Author: imacat <imacat@mail.imacat.idv.tw>
# First written: 2004-09-28

package Selima::FetchRec;
use 5.008;
use strict;
use warnings;
use base qw(Exporter);
use vars qw(@EXPORT @EXPORT_OK);
BEGIN {
@EXPORT = qw(fetchrec);
@EXPORT_OK = @EXPORT;
# Prototype declaration
sub fetchrec(\$$);
}

use Selima::ChkFunc;
use Selima::DataVars qw($DBH :lninfo);
use Selima::GetLang;

# fetchrec: Try to fetch a record by its serial number
sub fetchrec(\$$) {
    local ($_, %_);
    my ($sn, $table, $sth, $sql, %row);
    ($sn, $table) = @_;
    return if !check_sn $$sn;
    $sql = "SELECT * FROM " . $DBH->quote_identifier($table)
        . " WHERE sn=$$sn;\n";
    $sth = $DBH->prepare($sql);
    $sth->execute;
    return if $sth->rows != 1;
    %row = %{$sth->fetchrow_hashref};
    # Hash the multi-lingual columns
    $row{$_} = $row{$_ . "_" . getlang LN_DATABASE}
        foreach $DBH->cols_ml($table);
    return %row;
}

return 1;