mirror of
https://github.com/kamilwylegala/cakephp2-php8.git
synced 2024-11-15 19:38:26 +00:00
795 lines
21 KiB
PHP
795 lines
21 KiB
PHP
<?php
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/**
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* MySQL layer for DBO
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*
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* PHP 5
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*
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
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*
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* Licensed under The MIT License
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @package cake
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* @subpackage cake.cake.libs.model.datasources.dbo
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* @since CakePHP(tm) v 0.10.5.1790
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* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
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*/
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/**
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* MySQL DBO driver object
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*
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* Provides connection and SQL generation for MySQL RDMS
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*
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* @package cake
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* @subpackage cake.cake.libs.model.datasources.dbo
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*/
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class DboMysql extends DboSource {
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/**
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* Datasource description
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*
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* @var string
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*/
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public $description = "MySQL DBO Driver";
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/**
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* Base configuration settings for MySQL driver
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*
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* @var array
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*/
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protected $_baseConfig = array(
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'persistent' => true,
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'host' => 'localhost',
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'login' => 'root',
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'password' => '',
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'database' => 'cake',
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'port' => '3306'
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);
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/**
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* Reference to the PDO object connection
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*
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* @var PDO $_connection
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*/
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protected $_connection = null;
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/**
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* Start quote
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*
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* @var string
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*/
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public $startQuote = "`";
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/**
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* End quote
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*
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* @var string
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*/
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public $endQuote = "`";
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/**
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* use alias for update and delete. Set to true if version >= 4.1
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*
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* @var boolean
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* @access protected
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*/
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protected $_useAlias = true;
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/**
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* Index of basic SQL commands
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*
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* @var array
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* @access protected
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*/
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protected $_commands = array(
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'begin' => 'START TRANSACTION',
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'commit' => 'COMMIT',
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'rollback' => 'ROLLBACK'
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);
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/**
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* List of engine specific additional field parameters used on table creating
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*
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* @var array
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* @access public
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*/
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public $fieldParameters = array(
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'charset' => array('value' => 'CHARACTER SET', 'quote' => false, 'join' => ' ', 'column' => false, 'position' => 'beforeDefault'),
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'collate' => array('value' => 'COLLATE', 'quote' => false, 'join' => ' ', 'column' => 'Collation', 'position' => 'beforeDefault'),
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'comment' => array('value' => 'COMMENT', 'quote' => true, 'join' => ' ', 'column' => 'Comment', 'position' => 'afterDefault')
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);
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/**
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* List of table engine specific parameters used on table creating
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*
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* @var array
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* @access public
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*/
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public $tableParameters = array(
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'charset' => array('value' => 'DEFAULT CHARSET', 'quote' => false, 'join' => '=', 'column' => 'charset'),
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'collate' => array('value' => 'COLLATE', 'quote' => false, 'join' => '=', 'column' => 'Collation'),
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'engine' => array('value' => 'ENGINE', 'quote' => false, 'join' => '=', 'column' => 'Engine')
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);
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/**
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* MySQL column definition
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*
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* @var array
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*/
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public $columns = array(
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'primary_key' => array('name' => 'NOT NULL AUTO_INCREMENT'),
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'string' => array('name' => 'varchar', 'limit' => '255'),
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'text' => array('name' => 'text'),
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'integer' => array('name' => 'int', 'limit' => '11', 'formatter' => 'intval'),
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'float' => array('name' => 'float', 'formatter' => 'floatval'),
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'datetime' => array('name' => 'datetime', 'format' => 'Y-m-d H:i:s', 'formatter' => 'date'),
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'timestamp' => array('name' => 'timestamp', 'format' => 'Y-m-d H:i:s', 'formatter' => 'date'),
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'time' => array('name' => 'time', 'format' => 'H:i:s', 'formatter' => 'date'),
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'date' => array('name' => 'date', 'format' => 'Y-m-d', 'formatter' => 'date'),
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'binary' => array('name' => 'blob'),
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'boolean' => array('name' => 'tinyint', 'limit' => '1')
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);
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/**
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* Connects to the database using options in the given configuration array.
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*
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* @return boolean True if the database could be connected, else false
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*/
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function connect() {
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$config = $this->config;
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$this->connected = false;
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try {
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$flags = array(
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PDO::ATTR_PERSISTENT => $config['persistent'],
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PDO::MYSQL_ATTR_USE_BUFFERED_QUERY => true
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);
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if (!empty($config['encoding'])) {
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$flags[PDO::MYSQL_ATTR_INIT_COMMAND] = 'SET NAMES ' . $config['encoding'];
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}
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$this->_connection = new PDO(
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"mysql:{$config['host']};port={$config['port']};dbname={$config['database']}",
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$config['login'],
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$config['password'],
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$flags
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);
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$this->connected = true;
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} catch (PDOException $e) {
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$this->errors[] = $e->getMessage();
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}
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$this->_useAlias = (bool)version_compare($this->getVersion(), "4.1", ">=");
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return $this->connected;
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}
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public function getConnection() {
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return $this->_connection;
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}
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/**
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* Check whether the MySQL extension is installed/loaded
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*
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* @return boolean
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*/
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function enabled() {
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return in_array('mysql', PDO::getAvailableDrivers());
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}
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/**
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* Disconnects from database.
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*
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* @return boolean True if the database could be disconnected, else false
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*/
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function disconnect() {
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if (is_a($this->_result, 'PDOStatement')) {
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$this->_result->closeCursor();
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}
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unset($this->_connection);
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$this->connected = false;
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return !$this->connected;
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}
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/**
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* Returns an array of sources (tables) in the database.
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*
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* @return array Array of tablenames in the database
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*/
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function listSources() {
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$cache = parent::listSources();
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if ($cache != null) {
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return $cache;
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}
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$result = $this->_execute('SHOW TABLES FROM ' . $this->config['database']);
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if (!$result) {
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return array();
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} else {
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$tables = array();
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while ($line = $result->fetch()) {
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$tables[] = $line[0];
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}
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parent::listSources($tables);
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return $tables;
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}
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}
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/**
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* Returns a quoted and escaped string of $data for use in an SQL statement.
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*
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* @param string $data String to be prepared for use in an SQL statement
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* @param string $column The column into which this data will be inserted
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* @param boolean $safe Whether or not numeric data should be handled automagically if no column data is provided
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* @return string Quoted and escaped data
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*/
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function value($data, $column = null, $safe = false) {
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$parent = parent::value($data, $column, $safe);
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if ($parent != null) {
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return $parent;
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}
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if ($data === null || (is_array($data) && empty($data))) {
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return $this->_connection->quote($data, PDO::PARAM_NULL);
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}
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if ($data === '' && $column !== 'integer' && $column !== 'float' && $column !== 'boolean') {
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return $this->_connection->quote($data, PDO::PARAM_STR);
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}
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if (empty($column)) {
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$column = $this->introspectType($data);
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}
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switch ($column) {
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case 'boolean':
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return $this->boolean((bool)$data);
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break;
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case 'integer':
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case 'float':
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if ($data === '') {
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return 'NULL';
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}
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if (is_float($data)) {
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return sprintf('%F', $data);
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}
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if ((is_int($data) || $data === '0') || (
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is_numeric($data) && strpos($data, ',') === false &&
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$data[0] != '0' && strpos($data, 'e') === false)
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) {
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return $data;
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}
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default:
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return $this->_connection->quote($data, PDO::PARAM_STR);
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break;
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}
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}
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/**
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* Returns a formatted error message from previous database operation.
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*
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* @return string Error message with error number
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*/
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function lastError() {
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if ($this->hasResult()) {
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$error = $this->_result->errorInfo();
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if (empty($error)) {
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$error;
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}
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return $error[1] . ': ' . $error[2];
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}
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return null;
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}
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/**
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* Returns number of affected rows in previous database operation. If no previous operation exists,
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* this returns false.
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*
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* @return integer Number of affected rows
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*/
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function lastAffected() {
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if ($this->hasResult()) {
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return $this->_result->rowCount();
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}
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return null;
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}
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/**
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* Returns number of rows in previous resultset. If no previous resultset exists,
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* this returns false.
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*
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* @return integer Number of rows in resultset
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*/
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function lastNumRows() {
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if ($this->hasResult()) {
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return mysql_num_rows($this->_result);
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}
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return null;
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}
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/**
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* Returns the ID generated from the previous INSERT operation.
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*
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* @param unknown_type $source
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* @return in
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*/
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function lastInsertId($source = null) {
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return $this->_connection->lastInsertId();
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}
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/**
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* Builds a map of the columns contained in a result
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*
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* @param PDOStatement $results
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*/
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function resultSet($results) {
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//if (isset($this->results) && is_resource($this->results) && $this->results != $results) {
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// mysql_free_result($this->results);
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//}
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$this->results = $results;
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$this->map = array();
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$numFields = $results->columnCount();
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$index = 0;
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$j = 0;
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while ($j < $numFields) {
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$column = $results->getColumnMeta($j);
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if (!empty($column['table']) && strpos($column['name'], $this->virtualFieldSeparator) === false) {
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$this->map[$index++] = array($column['table'], $column['name']);
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} else {
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$this->map[$index++] = array(0, $column['name']);
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}
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$j++;
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}
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}
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/**
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* Fetches the next row from the current result set
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*
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* @return mixed array with results fetched and mapped to column names or false if there is no results left to fetch
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*/
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function fetchResult() {
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if ($row = $this->results->fetch()) {
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$resultRow = array();
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foreach ($this->map as $col => $meta) {
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list($table, $column) = $meta;
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$resultRow[$table][$column] = $row->{$meta[1]};
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}
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return $resultRow;
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} else {
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return false;
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}
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}
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/**
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* Gets the database encoding
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*
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* @return string The database encoding
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*/
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public function getEncoding() {
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return $this->_execute('SHOW VARIABLES LIKE ?', array('character_set_client'))->fetchObject()->Value;
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}
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/**
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* Gets the version string of the database server
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*
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* @return string The database encoding
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*/
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public function getVersion() {
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return $this->_connection->getAttribute(PDO::ATTR_SERVER_VERSION);
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}
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/**
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* Query charset by collation
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*
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* @param string $name Collation name
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* @return string Character set name
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*/
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public function getCharsetName($name) {
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if ((bool)version_compare($this->getVersion(), "5", ">=")) {
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$r = $this->_execute('SELECT CHARACTER_SET_NAME FROM INFORMATION_SCHEMA.COLLATIONS WHERE COLLATION_NAME = ?', array($name));
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$cols = $r->fetch();
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if (isset($cols['CHARACTER_SET_NAME'])) {
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return $cols['CHARACTER_SET_NAME'];
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}
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}
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return false;
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}
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/**
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* Returns an array of the fields in given table name.
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*
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* @param string $tableName Name of database table to inspect
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* @return array Fields in table. Keys are name and type
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*/
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function describe(&$model) {
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$cache = parent::describe($model);
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if ($cache != null) {
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return $cache;
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}
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$fields = false;
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$cols = $this->query('SHOW FULL COLUMNS FROM ' . $this->fullTableName($model));
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foreach ($cols as $column) {
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$colKey = array_keys($column);
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if (isset($column[$colKey[0]]) && !isset($column[0])) {
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$column[0] = $column[$colKey[0]];
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}
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if (isset($column[0])) {
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$fields[$column[0]['Field']] = array(
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'type' => $this->column($column[0]['Type']),
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'null' => ($column[0]['Null'] == 'YES' ? true : false),
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'default' => $column[0]['Default'],
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'length' => $this->length($column[0]['Type']),
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);
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if (!empty($column[0]['Key']) && isset($this->index[$column[0]['Key']])) {
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$fields[$column[0]['Field']]['key'] = $this->index[$column[0]['Key']];
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}
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foreach ($this->fieldParameters as $name => $value) {
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if (!empty($column[0][$value['column']])) {
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$fields[$column[0]['Field']][$name] = $column[0][$value['column']];
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}
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}
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if (isset($fields[$column[0]['Field']]['collate'])) {
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$charset = $this->getCharsetName($fields[$column[0]['Field']]['collate']);
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if ($charset) {
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$fields[$column[0]['Field']]['charset'] = $charset;
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}
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}
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}
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}
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$this->__cacheDescription($this->fullTableName($model, false), $fields);
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return $fields;
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}
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/**
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* Generates and executes an SQL UPDATE statement for given model, fields, and values.
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*
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* @param Model $model
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* @param array $fields
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* @param array $values
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* @param mixed $conditions
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* @return array
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*/
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function update(&$model, $fields = array(), $values = null, $conditions = null) {
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if (!$this->_useAlias) {
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return parent::update($model, $fields, $values, $conditions);
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}
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if ($values == null) {
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$combined = $fields;
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} else {
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$combined = array_combine($fields, $values);
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}
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$alias = $joins = false;
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$fields = $this->_prepareUpdateFields($model, $combined, empty($conditions), !empty($conditions));
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$fields = implode(', ', $fields);
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$table = $this->fullTableName($model);
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if (!empty($conditions)) {
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$alias = $this->name($model->alias);
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if ($model->name == $model->alias) {
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$joins = implode(' ', $this->_getJoins($model));
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}
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}
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$conditions = $this->conditions($this->defaultConditions($model, $conditions, $alias), true, true, $model);
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if ($conditions === false) {
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return false;
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}
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if (!$this->execute($this->renderStatement('update', compact('table', 'alias', 'joins', 'fields', 'conditions')))) {
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$model->onError();
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return false;
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}
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return true;
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}
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/**
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* Generates and executes an SQL DELETE statement for given id/conditions on given model.
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*
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* @param Model $model
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* @param mixed $conditions
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* @return boolean Success
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*/
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function delete(&$model, $conditions = null) {
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if (!$this->_useAlias) {
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return parent::delete($model, $conditions);
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}
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$alias = $this->name($model->alias);
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$table = $this->fullTableName($model);
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$joins = implode(' ', $this->_getJoins($model));
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|
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if (empty($conditions)) {
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$alias = $joins = false;
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}
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$conditions = $this->conditions($this->defaultConditions($model, $conditions, $alias), true, true, $model);
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if ($conditions === false) {
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return false;
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}
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if ($this->execute($this->renderStatement('delete', compact('alias', 'table', 'joins', 'conditions'))) === false) {
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$model->onError();
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return false;
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}
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return true;
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}
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|
|
/**
|
|
* Sets the database encoding
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|
*
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* @param string $enc Database encoding
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|
*/
|
|
function setEncoding($enc) {
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return $this->_execute('SET NAMES ' . $enc) != false;
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}
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|
|
/**
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|
* Returns an array of the indexes in given datasource name.
|
|
*
|
|
* @param string $model Name of model to inspect
|
|
* @return array Fields in table. Keys are column and unique
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|
*/
|
|
function index($model) {
|
|
$index = array();
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$table = $this->fullTableName($model);
|
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$old = version_compare($this->getVersion(), '4.1', '<=');
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if ($table) {
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$indices = $this->_execute('SHOW INDEX FROM ' . $table);
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while ($idx = $indices->fetch()) {
|
|
if ($old) {
|
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$idx = (object) current((array)$idx);
|
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}
|
|
if (!isset($index[$idx->Key_name]['column'])) {
|
|
$col = array();
|
|
$index[$idx->Key_name]['column'] = $idx->Column_name;
|
|
$index[$idx->Key_name]['unique'] = intval($idx->Non_unique == 0);
|
|
} else {
|
|
if (!empty($index[$idx->Key_name]['column']) && !is_array($index[$idx->Key_name]['column'])) {
|
|
$col[] = $index[$idx->Key_name]['column'];
|
|
}
|
|
$col[] = $idx->Column_name;
|
|
$index[$idx->Key_name]['column'] = $col;
|
|
}
|
|
}
|
|
}
|
|
return $index;
|
|
}
|
|
|
|
/**
|
|
* Generate a MySQL Alter Table syntax for the given Schema comparison
|
|
*
|
|
* @param array $compare Result of a CakeSchema::compare()
|
|
* @return array Array of alter statements to make.
|
|
*/
|
|
function alterSchema($compare, $table = null) {
|
|
if (!is_array($compare)) {
|
|
return false;
|
|
}
|
|
$out = '';
|
|
$colList = array();
|
|
foreach ($compare as $curTable => $types) {
|
|
$indexes = $tableParameters = $colList = array();
|
|
if (!$table || $table == $curTable) {
|
|
$out .= 'ALTER TABLE ' . $this->fullTableName($curTable) . " \n";
|
|
foreach ($types as $type => $column) {
|
|
if (isset($column['indexes'])) {
|
|
$indexes[$type] = $column['indexes'];
|
|
unset($column['indexes']);
|
|
}
|
|
if (isset($column['tableParameters'])) {
|
|
$tableParameters[$type] = $column['tableParameters'];
|
|
unset($column['tableParameters']);
|
|
}
|
|
switch ($type) {
|
|
case 'add':
|
|
foreach ($column as $field => $col) {
|
|
$col['name'] = $field;
|
|
$alter = 'ADD ' . $this->buildColumn($col);
|
|
if (isset($col['after'])) {
|
|
$alter .= ' AFTER ' . $this->name($col['after']);
|
|
}
|
|
$colList[] = $alter;
|
|
}
|
|
break;
|
|
case 'drop':
|
|
foreach ($column as $field => $col) {
|
|
$col['name'] = $field;
|
|
$colList[] = 'DROP ' . $this->name($field);
|
|
}
|
|
break;
|
|
case 'change':
|
|
foreach ($column as $field => $col) {
|
|
if (!isset($col['name'])) {
|
|
$col['name'] = $field;
|
|
}
|
|
$colList[] = 'CHANGE ' . $this->name($field) . ' ' . $this->buildColumn($col);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
$colList = array_merge($colList, $this->_alterIndexes($curTable, $indexes));
|
|
$colList = array_merge($colList, $this->_alterTableParameters($curTable, $tableParameters));
|
|
$out .= "\t" . join(",\n\t", $colList) . ";\n\n";
|
|
}
|
|
}
|
|
return $out;
|
|
}
|
|
|
|
/**
|
|
* Generate a MySQL "drop table" statement for the given Schema object
|
|
*
|
|
* @param object $schema An instance of a subclass of CakeSchema
|
|
* @param string $table Optional. If specified only the table name given will be generated.
|
|
* Otherwise, all tables defined in the schema are generated.
|
|
* @return string
|
|
*/
|
|
function dropSchema($schema, $table = null) {
|
|
if (!is_a($schema, 'CakeSchema')) {
|
|
trigger_error(__('Invalid schema object'), E_USER_WARNING);
|
|
return null;
|
|
}
|
|
$out = '';
|
|
foreach ($schema->tables as $curTable => $columns) {
|
|
if (!$table || $table == $curTable) {
|
|
$out .= 'DROP TABLE IF EXISTS ' . $this->fullTableName($curTable) . ";\n";
|
|
}
|
|
}
|
|
return $out;
|
|
}
|
|
|
|
/**
|
|
* Generate MySQL table parameter alteration statementes for a table.
|
|
*
|
|
* @param string $table Table to alter parameters for.
|
|
* @param array $parameters Parameters to add & drop.
|
|
* @return array Array of table property alteration statementes.
|
|
* @todo Implement this method.
|
|
*/
|
|
function _alterTableParameters($table, $parameters) {
|
|
if (isset($parameters['change'])) {
|
|
return $this->buildTableParameters($parameters['change']);
|
|
}
|
|
return array();
|
|
}
|
|
|
|
/**
|
|
* Generate MySQL index alteration statements for a table.
|
|
*
|
|
* @param string $table Table to alter indexes for
|
|
* @param array $new Indexes to add and drop
|
|
* @return array Index alteration statements
|
|
*/
|
|
function _alterIndexes($table, $indexes) {
|
|
$alter = array();
|
|
if (isset($indexes['drop'])) {
|
|
foreach($indexes['drop'] as $name => $value) {
|
|
$out = 'DROP ';
|
|
if ($name == 'PRIMARY') {
|
|
$out .= 'PRIMARY KEY';
|
|
} else {
|
|
$out .= 'KEY ' . $name;
|
|
}
|
|
$alter[] = $out;
|
|
}
|
|
}
|
|
if (isset($indexes['add'])) {
|
|
foreach ($indexes['add'] as $name => $value) {
|
|
$out = 'ADD ';
|
|
if ($name == 'PRIMARY') {
|
|
$out .= 'PRIMARY ';
|
|
$name = null;
|
|
} else {
|
|
if (!empty($value['unique'])) {
|
|
$out .= 'UNIQUE ';
|
|
}
|
|
}
|
|
if (is_array($value['column'])) {
|
|
$out .= 'KEY '. $name .' (' . implode(', ', array_map(array(&$this, 'name'), $value['column'])) . ')';
|
|
} else {
|
|
$out .= 'KEY '. $name .' (' . $this->name($value['column']) . ')';
|
|
}
|
|
$alter[] = $out;
|
|
}
|
|
}
|
|
return $alter;
|
|
}
|
|
|
|
/**
|
|
* Inserts multiple values into a table
|
|
*
|
|
* @param string $table
|
|
* @param string $fields
|
|
* @param array $values
|
|
*/
|
|
function insertMulti($table, $fields, $values) {
|
|
$table = $this->fullTableName($table);
|
|
if (is_array($fields)) {
|
|
$fields = implode(', ', array_map(array(&$this, 'name'), $fields));
|
|
}
|
|
$values = implode(', ', $values);
|
|
$this->query("INSERT INTO {$table} ({$fields}) VALUES {$values}");
|
|
}
|
|
/**
|
|
* Returns an detailed array of sources (tables) in the database.
|
|
*
|
|
* @param string $name Table name to get parameters
|
|
* @return array Array of tablenames in the database
|
|
*/
|
|
function listDetailedSources($name = null) {
|
|
$condition = '';
|
|
if (is_string($name)) {
|
|
$condition = ' LIKE ' . $this->value($name);
|
|
}
|
|
$result = $this->query('SHOW TABLE STATUS FROM ' . $this->name($this->config['database']) . $condition . ';');
|
|
if (!$result) {
|
|
return array();
|
|
} else {
|
|
$tables = array();
|
|
foreach ($result as $row) {
|
|
$tables[$row['TABLES']['Name']] = $row['TABLES'];
|
|
if (!empty($row['TABLES']['Collation'])) {
|
|
$charset = $this->getCharsetName($row['TABLES']['Collation']);
|
|
if ($charset) {
|
|
$tables[$row['TABLES']['Name']]['charset'] = $charset;
|
|
}
|
|
}
|
|
}
|
|
if (is_string($name)) {
|
|
return $tables[$name];
|
|
}
|
|
return $tables;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Converts database-layer column types to basic types
|
|
*
|
|
* @param string $real Real database-layer column type (i.e. "varchar(255)")
|
|
* @return string Abstract column type (i.e. "string")
|
|
*/
|
|
function column($real) {
|
|
if (is_array($real)) {
|
|
$col = $real['name'];
|
|
if (isset($real['limit'])) {
|
|
$col .= '('.$real['limit'].')';
|
|
}
|
|
return $col;
|
|
}
|
|
|
|
$col = str_replace(')', '', $real);
|
|
$limit = $this->length($real);
|
|
if (strpos($col, '(') !== false) {
|
|
list($col, $vals) = explode('(', $col);
|
|
}
|
|
|
|
if (in_array($col, array('date', 'time', 'datetime', 'timestamp'))) {
|
|
return $col;
|
|
}
|
|
if (($col == 'tinyint' && $limit == 1) || $col == 'boolean') {
|
|
return 'boolean';
|
|
}
|
|
if (strpos($col, 'int') !== false) {
|
|
return 'integer';
|
|
}
|
|
if (strpos($col, 'char') !== false || $col == 'tinytext') {
|
|
return 'string';
|
|
}
|
|
if (strpos($col, 'text') !== false) {
|
|
return 'text';
|
|
}
|
|
if (strpos($col, 'blob') !== false || $col == 'binary') {
|
|
return 'binary';
|
|
}
|
|
if (strpos($col, 'float') !== false || strpos($col, 'double') !== false || strpos($col, 'decimal') !== false) {
|
|
return 'float';
|
|
}
|
|
if (strpos($col, 'enum') !== false) {
|
|
return "enum($vals)";
|
|
}
|
|
return 'text';
|
|
}
|
|
}
|