WebSVN – oidplus – Blame – /trunk/plugins/viathinksoft/sqlSlang/oracle/OIDplusSqlSlangPluginOracle.class.php

Rev	Author	Line No.	Line
783	daniel-mar	1	<?php
		2
		3	/*
		4	* OIDplus 2.0
1086	daniel-mar	5	* Copyright 2019 - 2023 Daniel Marschall, ViaThinkSoft
783	daniel-mar	6	*
		7	* Licensed under the Apache License, Version 2.0 (the "License");
		8	* you may not use this file except in compliance with the License.
		9	* You may obtain a copy of the License at
		10	*
		11	* http://www.apache.org/licenses/LICENSE-2.0
		12	*
		13	* Unless required by applicable law or agreed to in writing, software
		14	* distributed under the License is distributed on an "AS IS" BASIS,
		15	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		16	* See the License for the specific language governing permissions and
		17	* limitations under the License.
		18	*/
		19
1050	daniel-mar	20	namespace ViaThinkSoft\OIDplus;
783	daniel-mar	21
1086	daniel-mar	22	// phpcs:disable PSR1.Files.SideEffects
		23	\defined('INSIDE_OIDPLUS') or die;
		24	// phpcs:enable PSR1.Files.SideEffects
		25
783	daniel-mar	26	class OIDplusSqlSlangPluginOracle extends OIDplusSqlSlangPlugin {
		27
1116	daniel-mar	28	/**
		29	* @return string
		30	*/
783	daniel-mar	31	public static function id(): string {
		32	return 'oracle';
		33	}
		34
1116	daniel-mar	35	/**
		36	* @return string
		37	*/
783	daniel-mar	38	public function sqlDate(): string {
		39	return 'SYSDATE';
		40	}
		41
1116	daniel-mar	42	/**
		43	* @param OIDplusDatabaseConnection $db
		44	* @return bool
		45	*/
783	daniel-mar	46	public function detect(OIDplusDatabaseConnection $db): bool {
		47	try {
		48	$vers = $db->query("SELECT banner FROM v\$version WHERE banner LIKE 'Oracle%'")->fetch_object()->banner;
1225	daniel-mar	49	return (stripos($vers, 'Oracle') !== false);
1050	daniel-mar	50	} catch (\Exception $e) {
783	daniel-mar	51	return false;
		52	}
		53	}
		54
1116	daniel-mar	55	/**
1152	daniel-mar	56	* @var string\|null
1116	daniel-mar	57	*/
783	daniel-mar	58	private $last_insert_table = null;
		59
1116	daniel-mar	60	/**
		61	* @param OIDplusDatabaseConnection $db
		62	* @return int
		63	* @throws OIDplusException
		64	*/
783	daniel-mar	65	public function insert_id(OIDplusDatabaseConnection $db): int {
		66	if (!$this->last_insert_table) return 0;
		67	$res = $db->query("select sequence_name from user_tab_identity_cols where table_name = '".strtoupper($this->last_insert_table)."'");
		68	$row = $res->fetch_array();
		69
		70	if (!isset($row['sequence_name'])) return 0;
		71	$res = $db->query("select ".$row['sequence_name'].".currval from dual");
		72	$row = $res->fetch_array();
		73	return (int)$row['CURRVAL'];
		74	}
		75
1116	daniel-mar	76	/**
		77	* @param string $cont
		78	* @param string $table
		79	* @param string $prefix
		80	* @return string
		81	*/
		82	public function setupSetTablePrefix(string $cont, string $table, string $prefix): string {
788	daniel-mar	83	$table = strtoupper($table);
		84	$prefix = strtoupper($prefix);
1130	daniel-mar	85	return str_replace('"'.$table.'"', '"'.$prefix.$table.'"', $cont);
783	daniel-mar	86	}
		87
1116	daniel-mar	88	/**
		89	* @param string $database
		90	* @return string
		91	*/
		92	public function setupCreateDbIfNotExists(string $database): string {
783	daniel-mar	93	// TODO! Implement
		94	return "";
		95	}
		96
1116	daniel-mar	97	/**
		98	* @param string $database
		99	* @return string
		100	*/
		101	public function setupUseDatabase(string $database): string {
783	daniel-mar	102	// TODO! Implement
		103	return "";
		104	}
		105
1116	daniel-mar	106	/**
		107	* @param string $expr1
		108	* @param string $expr2
		109	* @return string
		110	*/
		111	public function isNullFunction(string $expr1, string $expr2): string {
783	daniel-mar	112	// Test via "SELECT NVL(null, 'foo') FROM DUAL;"
		113	return "NVL($expr1, $expr2)";
		114	}
		115
1116	daniel-mar	116	/**
		117	* @param string $sql
		118	* @return string
		119	*/
		120	public function filterQuery(string $sql): string {
1240	daniel-mar	121	$sql = trim($sql);
783	daniel-mar	122
1240	daniel-mar	123	// SQL-Queries MUST NOT end with a ";", otherwise error "SQL command not property ended"
		124	$sql = rtrim($sql, "; \n\r\t\v\x00");
		125	// SQL/PL-Programs MUST end with a ";"
		126	if (strtolower(substr($sql,-3)) == 'end') $sql .= ';';
		127
783	daniel-mar	128	// "select 1" is not valid. You need to add "from dual"
1240	daniel-mar	129	if (str_starts_with(trim(strtolower($sql)),'select') && (stripos($sql,'from') === false)) {
783	daniel-mar	130	$sql .= ' from dual';
		131	}
		132
		133	// Dirty hack!!! We need the name of the last inserted table so that insert_id()
		134	// works. This is a dirty hack, because the invokation of filterQuery() does
		135	// not guarantee that the query was actually executed...
		136	if (preg_match("@insert into (.+) @ismU", $sql, $m)) {
		137	$this->last_insert_table = $m[1];
		138	} else {
		139	$this->last_insert_table = null;
		140	}
		141
		142	// Comment is a keyword and cannot be used as column name
1116	daniel-mar	143	return str_ireplace('comment', '"COMMENT"', $sql);
783	daniel-mar	144	}
		145
1116	daniel-mar	146	/**
		147	* @param bool $bool
		148	* @return string
		149	*/
		150	public function getSQLBool(bool $bool): string {
783	daniel-mar	151	return $bool ? '1' : '0';
		152	}
		153
1116	daniel-mar	154	/**
		155	* @param string $str
		156	* @return string
		157	*/
		158	public function escapeString(string $str): string {
783	daniel-mar	159	return str_replace("'", "''", $str);
		160	}
		161	}

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oidplus/trunk/plugins/viathinksoft/sqlSlang/oracle/OIDplusSqlSlangPluginOracle.class.php – Rev 1300