<?php
/*
* OIDplus 2.0
* Copyright 2019 - 2023 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;
// phpcs:disable PSR1.Files.SideEffects
// phpcs:enable PSR1.Files.SideEffects
class OIDplusSqlSlangPluginOracle extends OIDplusSqlSlangPlugin {
/**
* @return string
*/
public static function id(): string {
return 'oracle';
}
/**
* @return string
*/
public function sqlDate(): string {
return 'SYSDATE';
}
/**
* @param OIDplusDatabaseConnection $db
* @return bool
*/
public function detect(OIDplusDatabaseConnection $db): bool {
try {
$vers = $db->query("SELECT banner FROM v\$version WHERE banner LIKE 'Oracle%'")->fetch_object()->banner;
return (stripos($vers, 'Oracle') !== false);
} catch (\Exception $e) {
return false;
}
}
/**
* @var string|null
*/
private $last_insert_table = null;
/**
* @param OIDplusDatabaseConnection $db
* @return int
* @throws OIDplusException
*/
public function insert_id(OIDplusDatabaseConnection $db): int {
if (!$this->last_insert_table) return 0;
$res = $db->query("select sequence_name from user_tab_identity_cols where table_name = '".strtoupper($this->last_insert_table)."'");
$row = $res->fetch_array();
if (!isset($row['sequence_name'])) return 0;
$res = $db->query("select ".$row['sequence_name'].".currval from dual");
$row = $res->fetch_array();
return (int)$row['CURRVAL'];
}
/**
* @param string $cont
* @param string $table
* @param string $prefix
* @return string
*/
public function setupSetTablePrefix(string $cont, string $table, string $prefix): string {
return str_replace('"'.$table.'"', '"'.$prefix.$table.'"', $cont);
}
/**
* @param string $database
* @return string
*/
public function setupCreateDbIfNotExists(string $database): string {
// TODO! Implement
return "";
}
/**
* @param string $database
* @return string
*/
public function setupUseDatabase(string $database): string {
// TODO! Implement
return "";
}
/**
* @param string $expr1
* @param string $expr2
* @return string
*/
public function isNullFunction(string $expr1, string $expr2): string {
// Test via "SELECT NVL(null, 'foo') FROM DUAL;"
return "NVL($expr1, $expr2)";
}
/**
* @param string $sql
* @return string
*/
public function filterQuery(string $sql): string {
// SQL-Queries MUST NOT end with a ";", otherwise error "SQL command not property ended"
$sql = rtrim($sql, "; \n\r\t\v\x00");
// SQL/PL-Programs MUST end with a ";"
// "select 1" is not valid. You need to add "from dual"
$sql .= ' from dual';
}
// Dirty hack!!! We need the name of the last inserted table so that insert_id()
// works. This is a dirty hack, because the invokation of filterQuery() does
// not guarantee that the query was actually executed...
if (preg_match("@insert into (.+) @ismU", $sql, $m)) {
$this->last_insert_table = $m[1];
} else {
$this->last_insert_table = null;
}
// Comment is a keyword and cannot be used as column name
}
/**
* @param bool $bool
* @return string
*/
public function getSQLBool(bool $bool): string {
return $bool ? '1' : '0';
}
/**
* @param string $str
* @return string
*/
public function escapeString(string $str): string {
}
}