<?php
/*
* OIDplus 2.0
* Copyright 2019 - 2021 Daniel Marschall, ViaThinkSoft
*
* 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.
*/
namespace ViaThinkSoft\OIDplus;
class OIDplusSqlSlangPluginMySQL extends OIDplusSqlSlangPlugin {
public static function id(): string {
return 'mysql';
}
public function natOrder($fieldname, $order='asc'): string {
if (($order != 'asc') && ($order != 'desc')) {
throw new OIDplusException(_L('Invalid order "%1" (needs to be "asc" or "desc")',$order));
}
$max_arc_len = OIDplus::baseConfig()->getValue('LIMITS_MAX_OID_ARC_SIZE') > 65 ? 65 : OIDplus::baseConfig()->getValue('LIMITS_MAX_OID_ARC_SIZE'); // Limit of "decimal()" type
// 1. sort by namespace (oid, guid, ...)
$out[] = "SUBSTRING_INDEX($fieldname,':',1) $order";
// 2. sort by first arc (0,1,2)
$out[] = "SUBSTRING(SUBSTRING_INDEX($fieldname,'.',1), LENGTH(SUBSTRING_INDEX($fieldname,':',1))+2, $max_arc_len) $order";
for ($i=2; $i<=OIDplus::baseConfig()->getValue('LIMITS_MAX_OID_DEPTH'); $i++) {
// 3. Sort by the rest arcs one by one, not that MySQL can only handle decimal(65), not decimal($max_arc_len)
$out[] = "cast(SUBSTRING(SUBSTRING_INDEX($fieldname,'.',$i), LENGTH(SUBSTRING_INDEX($fieldname,'.',".($i-1)."))+2, $max_arc_len) as decimal($max_arc_len)) $order";
}
// 4. as last resort, sort by the identifier itself, e.g. if the casts above did fail (happens if it is not an OID)
$out[] = "$fieldname $order";
}
public function sqlDate(): string {
return 'now()';
}
public function detect(OIDplusDatabaseConnection $db): bool {
try {
$vers = $db->query("select version() as dbms_version")->fetch_object()->dbms_version;
return (strpos($vers, 'mysql') !== false) || (strpos($vers, 'mariadb') !== false);
} catch (\Exception $e) {
return false;
}
}
public function insert_id(OIDplusDatabaseConnection $db): int {
$res = $db->query("SELECT LAST_INSERT_ID() AS ID");
$row = $res->fetch_array();
return (int)$row['ID'];
}
public function setupSetTablePrefix($cont, $table, $prefix): string {
$cont = str_replace('`'.$table.'`', '`'.$prefix.$table.'`', $cont);
return $cont;
}
public function setupCreateDbIfNotExists($database): string {
return "CREATE DATABASE IF NOT EXISTS `$database`;\n\n";
}
public function setupUseDatabase($database): string {
return "USE `$database`;\n\n";
}
public function isNullFunction($expr1, $expr2): string {
return "ifnull($expr1, $expr2)";
}
public function filterQuery($sql): string {
return $sql;
}
public function getSQLBool($bool): string {
return $bool ? '1' : '0';
}
public function escapeString($str): string {
}
}