mirror of
https://github.com/kamilwylegala/cakephp2-php8.git
synced 2024-11-15 19:38:26 +00:00
677 lines
18 KiB
PHP
677 lines
18 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 2005-2011, 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 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @package Cake.Model.Datasource.Database
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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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App::uses('DboSource', 'Model/Datasource');
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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.Model.Datasource.Database
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*/
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class Mysql 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 $columns = array(
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'primary_key' => array('name' => 'NOT NULL AUTO_INCREMENT'),
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'string' => array('name' => 'varchar', 'limit' => '255'),
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'text' => array('name' => 'text'),
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'integer' => array('name' => 'int', 'limit' => '11', 'formatter' => 'intval'),
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'float' => array('name' => 'float', 'formatter' => 'floatval'),
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'datetime' => array('name' => 'datetime', 'format' => 'Y-m-d H:i:s', 'formatter' => 'date'),
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'timestamp' => array('name' => 'timestamp', 'format' => 'Y-m-d H:i:s', 'formatter' => 'date'),
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'time' => array('name' => 'time', 'format' => 'H:i:s', 'formatter' => 'date'),
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'date' => array('name' => 'date', 'format' => 'Y-m-d', 'formatter' => 'date'),
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'binary' => array('name' => 'blob'),
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'boolean' => array('name' => 'tinyint', 'limit' => '1')
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);
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/**
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* Connects to the database using options in the given configuration array.
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*
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* @return boolean True if the database could be connected, else false
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*/
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public function connect() {
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$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:host={$config['host']};port={$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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throw new MissingConnectionException(array('class' => $e->getMessage()));
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}
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$this->_useAlias = (bool)version_compare($this->getVersion(), "4.1", ">=");
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return $this->connected;
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}
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/**
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* Check whether the MySQL extension is installed/loaded
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*
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* @return boolean
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*/
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public function enabled() {
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return in_array('mysql', PDO::getAvailableDrivers());
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}
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/**
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* Returns an array of sources (tables) in the database.
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*
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* @return array Array of tablenames in the database
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*/
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public function listSources($data = null) {
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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 ' . $this->name($this->config['database']));
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if (!$result) {
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$result->closeCursor();
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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[] = $line[0];
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}
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$result->closeCursor();
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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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* Builds a map of the columns contained in a result
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*
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* @param PDOStatement $results
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*/
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public function resultSet($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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while ($numFields-- > 0) {
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$column = $results->getColumnMeta($index);
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if (empty($column['native_type'])) {
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$type = ($column['len'] == 1) ? 'boolean' : 'string';
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} else {
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$type = $column['native_type'];
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}
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if (!empty($column['table']) && strpos($column['name'], $this->virtualFieldSeparator) === false) {
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$this->map[$index++] = array($column['table'], $column['name'], $type);
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} else {
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$this->map[$index++] = array(0, $column['name'], $type);
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}
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}
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}
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/**
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* Fetches the next row from the current result set
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*
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* @return mixed array with results fetched and mapped to column names or false if there is no results left to fetch
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*/
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public function fetchResult() {
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if ($row = $this->_result->fetch()) {
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$resultRow = array();
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foreach ($this->map as $col => $meta) {
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list($table, $column, $type) = $meta;
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$resultRow[$table][$column] = $row[$col];
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if ($type === 'boolean' && $row[$col] !== null) {
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$resultRow[$table][$column] = $this->boolean($resultRow[$table][$column]);
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}
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}
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return $resultRow;
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}
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$this->_result->closeCursor();
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return false;
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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 mixed $tableName Name of database table to inspect or model instance
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* @return array Fields in table. Keys are name and type
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*/
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public function describe($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->_execute('SHOW FULL COLUMNS FROM ' . $this->fullTableName($model));
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if (!$cols) {
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throw new CakeException(__d('cake_dev', 'Could not describe table for %s', $model->name));
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}
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foreach ($cols as $column) {
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$fields[$column->Field] = array(
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'type' => $this->column($column->Type),
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'null' => ($column->Null === 'YES' ? true : false),
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'default' => $column->Default,
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'length' => $this->length($column->Type),
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);
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if (!empty($column->Key) && isset($this->index[$column->Key])) {
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$fields[$column->Field]['key'] = $this->index[$column->Key];
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}
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foreach ($this->fieldParameters as $name => $value) {
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if (!empty($column->{$value['column']})) {
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$fields[$column->Field][$name] = $column->{$value['column']};
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}
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}
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if (isset($fields[$column->Field]['collate'])) {
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$charset = $this->getCharsetName($fields[$column->Field]['collate']);
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if ($charset) {
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$fields[$column->Field]['charset'] = $charset;
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}
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}
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}
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$this->__cacheDescription($this->fullTableName($model, false), $fields);
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$cols->closeCursor();
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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 $conditions
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* @return array
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*/
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public function update($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 $conditions
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* @return boolean Success
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*/
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public function delete($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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if (empty($conditions)) {
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$alias = $joins = false;
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}
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$complexConditions = false;
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foreach ((array)$conditions as $key => $value) {
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if (strpos($key, $model->alias) === false) {
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$complexConditions = true;
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break;
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}
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}
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if (!$complexConditions) {
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$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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/**
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* Sets the database encoding
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*
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* @param string $enc Database encoding
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*/
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public function setEncoding($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.
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*
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* @param string $model Name of model to inspect
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* @return array Fields in table. Keys are column and unique
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*/
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public function index($model) {
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$index = array();
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$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 = $indices->fetch()) {
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if ($old) {
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$idx = (object) current((array)$idx);
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}
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if (!isset($index[$idx->Key_name]['column'])) {
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$col = array();
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$index[$idx->Key_name]['column'] = $idx->Column_name;
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$index[$idx->Key_name]['unique'] = intval($idx->Non_unique == 0);
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} else {
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if (!empty($index[$idx->Key_name]['column']) && !is_array($index[$idx->Key_name]['column'])) {
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$col[] = $index[$idx->Key_name]['column'];
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}
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$col[] = $idx->Column_name;
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$index[$idx->Key_name]['column'] = $col;
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}
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}
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$indices->closeCursor();
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}
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return $index;
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}
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/**
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* Generate a MySQL Alter Table syntax for the given Schema comparison
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*
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* @param array $compare Result of a CakeSchema::compare()
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* @return array Array of alter statements to make.
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*/
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public function alterSchema($compare, $table = null) {
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if (!is_array($compare)) {
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return false;
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}
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$out = '';
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$colList = array();
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foreach ($compare as $curTable => $types) {
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$indexes = $tableParameters = $colList = array();
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if (!$table || $table == $curTable) {
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$out .= 'ALTER TABLE ' . $this->fullTableName($curTable) . " \n";
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foreach ($types as $type => $column) {
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if (isset($column['indexes'])) {
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$indexes[$type] = $column['indexes'];
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unset($column['indexes']);
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}
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if (isset($column['tableParameters'])) {
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$tableParameters[$type] = $column['tableParameters'];
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unset($column['tableParameters']);
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}
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switch ($type) {
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case 'add':
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foreach ($column as $field => $col) {
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$col['name'] = $field;
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$alter = 'ADD ' . $this->buildColumn($col);
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if (isset($col['after'])) {
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$alter .= ' AFTER ' . $this->name($col['after']);
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}
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$colList[] = $alter;
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}
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break;
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case 'drop':
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foreach ($column as $field => $col) {
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$col['name'] = $field;
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$colList[] = 'DROP ' . $this->name($field);
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}
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break;
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case 'change':
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foreach ($column as $field => $col) {
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if (!isset($col['name'])) {
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$col['name'] = $field;
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}
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$colList[] = 'CHANGE ' . $this->name($field) . ' ' . $this->buildColumn($col);
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}
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break;
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}
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}
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$colList = array_merge($colList, $this->_alterIndexes($curTable, $indexes));
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$colList = array_merge($colList, $this->_alterTableParameters($curTable, $tableParameters));
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$out .= "\t" . implode(",\n\t", $colList) . ";\n\n";
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}
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}
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return $out;
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}
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/**
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* Generate a MySQL "drop table" statement for the given Schema object
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*
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* @param CakeSchema $schema An instance of a subclass of CakeSchema
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* @param string $table Optional. If specified only the table name given will be generated.
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* Otherwise, all tables defined in the schema are generated.
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* @return string
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*/
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public function dropSchema(CakeSchema $schema, $table = null) {
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$out = '';
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foreach ($schema->tables as $curTable => $columns) {
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if (!$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 $parameters Parameters to add & drop.
|
|
* @return array Array of table property alteration statementes.
|
|
* @todo Implement this method.
|
|
*/
|
|
protected function _alterTableParameters($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 $new Indexes to add and drop
|
|
* @return array Index alteration statements
|
|
*/
|
|
protected function _alterIndexes($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;
|
|
}
|
|
|
|
/**
|
|
* Returns an detailed array of sources (tables) in the database.
|
|
*
|
|
* @param string $name Table name to get parameters
|
|
* @return array Array of tablenames in the database
|
|
*/
|
|
public function listDetailedSources($name = null) {
|
|
$condition = '';
|
|
$params = array();
|
|
if (is_string($name)) {
|
|
$condition = ' WHERE name = ?' ;
|
|
$params = array($name);
|
|
}
|
|
$result = $this->_execute('SHOW TABLE STATUS ' . $condition, $params);
|
|
|
|
if (!$result) {
|
|
$result->closeCursor();
|
|
return array();
|
|
} else {
|
|
$tables = array();
|
|
while ($row = $result->fetch()) {
|
|
$tables[$row->Name] = (array) $row;
|
|
unset($tables[$row->Name]['queryString']);
|
|
if (!empty($row->Collation)) {
|
|
$charset = $this->getCharsetName($row->Collation);
|
|
if ($charset) {
|
|
$tables[$row->Name]['charset'] = $charset;
|
|
}
|
|
}
|
|
}
|
|
$result->closeCursor();
|
|
if (is_string($name) && isset($tables[$name])) {
|
|
return $tables[$name];
|
|
}
|
|
return $tables;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Converts database-layer column types to basic types
|
|
*
|
|
* @param string $real Real database-layer column type (i.e. "varchar(255)")
|
|
* @return string Abstract column type (i.e. "string")
|
|
*/
|
|
public function column($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';
|
|
}
|
|
}
|