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ca5753bc39
This frees memory returned from a result set. git-svn-id: https://svn.cakephp.org/repo/branches/1.2.x.x@3943 3807eeeb-6ff5-0310-8944-8be069107fe0
437 lines
No EOL
11 KiB
PHP
437 lines
No EOL
11 KiB
PHP
<?php
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/* SVN FILE: $Id$ */
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/**
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* MySQLi layer for DBO
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*
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* Long description for file
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*
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* PHP versions 4 and 5
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*
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* CakePHP : Rapid Development Framework <http://www.cakephp.org/>
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* Copyright (c) 2006, Cake Software Foundation, Inc.
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* 1785 E. Sahara Avenue, Suite 490-204
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* Las Vegas, Nevada 89104
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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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* @filesource
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* @copyright Copyright (c) 2006, Cake Software Foundation, Inc.
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* @link http://www.cakefoundation.org/projects/info/cakephp CakePHP Project
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* @package cake
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* @subpackage cake.cake.libs.model.dbo
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* @since CakePHP v 1.1.4.2974
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* @version $Revision$
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* @modifiedby $LastChangedBy$
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* @lastmodified $Date$
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License
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*/
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/**
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* Short description for class.
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*
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* Long description for class
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*
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* @package cake
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* @subpackage cake.cake.libs.model.dbo
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*/
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class DboMysqli extends DboSource {
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/**
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* Enter description here...
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*
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* @var unknown_type
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*/
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var $description = "Mysqli DBO Driver";
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/**
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* Enter description here...
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*
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* @var unknown_type
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*/
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var $startQuote = "`";
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/**
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* Enter description here...
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*
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* @var unknown_type
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*/
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var $endQuote = "`";
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/**
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* Base configuration settings for Mysqli driver
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*
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* @var array
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*/
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var $_baseConfig = array('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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'connect' => 'mysqli_pconnect');
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/**
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* Mysqli column definition
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*
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* @var array
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*/
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var $columns = array('primary_key' => array('name' => 'int(11) DEFAULT NULL auto_increment'),
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'string' => array('name' => 'varchar', 'limit' => '255'),
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'text' => array('name' => 'text'),
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'integer' => array('name' => 'int', 'limit' => '11', 'formatter' => 'intval'),
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'float' => array('name' => 'float', 'formatter' => 'floatval'),
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'datetime' => array('name' => 'datetime', 'format' => 'Y-m-d H:i:s', 'formatter' => 'date'),
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'timestamp' => array('name' => 'timestamp', 'format' => 'Y-m-d H:i:s', 'formatter' => 'date'),
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'time' => array('name' => 'time', 'format' => 'H:i:s', 'formatter' => 'date'),
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'date' => array('name' => 'date', 'format' => 'Y-m-d', 'formatter' => 'date'),
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'binary' => array('name' => 'blob'),
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'boolean' => array('name' => 'tinyint', 'limit' => '1'));
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/**
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* Connects to the database using options in the given configuration array.
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*
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* @return boolean True if the database could be connected, else false
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*/
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function connect() {
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$config = $this->config;
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$connect = $config['connect'];
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$this->connected = false;
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if (!$config['persistent']) {
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$this->connection = mysqli_connect($config['host'], $config['login'], $config['password'], true);
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} else {
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$this->connection = $connect($config['host'], $config['login'], $config['password']);
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}
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if (mysqli_select_db($this->connection, $config['database'])) {
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$this->connected = true;
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}
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return $this->connected;
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}
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/**
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* Disconnects from database.
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*
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* @return boolean True if the database could be disconnected, else false
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*/
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function disconnect() {
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@mysqli_free_result($this->results);
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$this->connected = !@mysqli_close($this->connection);
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return !$this->connected;
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}
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/**
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* Executes given SQL statement.
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*
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* @param string $sql SQL statement
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* @return resource Result resource identifier
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* @access protected
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*/
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function _execute($sql) {
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return mysqli_query($this->connection, $sql);
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}
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/**
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* Returns an array of sources (tables) in the database.
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*
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* @return array Array of tablenames in the database
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*/
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function listSources() {
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$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 = mysqli_fetch_array($result)) {
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$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 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('DESCRIBE ' . $this->fullTableName($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[] = array(
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'name' => $column[0]['Field'],
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'type' => $this->column($column[0]['Type']),
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'null' => $column[0]['Null'],
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'default' => $column[0]['Default']
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);
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}
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}
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$this->__cacheDescription($model->tablePrefix.$model->table, $fields);
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return $fields;
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}
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/**
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* Returns a quoted name of $data for use in an SQL statement.
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*
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* @param string $data Name (table.field) to be prepared for use in an SQL statement
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* @return string Quoted for MySQL
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*/
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function name($data) {
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if ($data == '*') {
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return '*';
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}
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$pos = strpos($data, '`');
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if ($pos === false) {
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$data = '`'. str_replace('.', '`.`', $data) .'`';
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}
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return $data;
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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) {
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return 'NULL';
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}
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if($data === '') {
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return "''";
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}
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switch ($column) {
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case 'boolean':
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$data = $this->boolean((bool)$data);
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break;
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default:
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$data = mysqli_real_escape_string($this->connection, $data);
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break;
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}
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return "'" . $data . "'";
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}
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/**
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* Begin a transaction
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*
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* @param unknown_type $model
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* @return boolean True on success, false on fail
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* (i.e. if the database/model does not support transactions).
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*/
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function begin(&$model) {
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if (parent::begin($model)) {
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if ($this->execute('START TRANSACTION')) {
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$this->__transactionStarted = true;
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return true;
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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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* Commit a transaction
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*
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* @param unknown_type $model
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* @return boolean True on success, false on fail
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* (i.e. if the database/model does not support transactions,
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* or a transaction has not started).
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*/
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function commit(&$model) {
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if (parent::commit($model)) {
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$this->__transactionStarted = false;
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return $this->execute('COMMIT');
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}
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return false;
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}
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/**
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* Rollback a transaction
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*
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* @param unknown_type $model
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* @return boolean True on success, false on fail
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* (i.e. if the database/model does not support transactions,
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* or a transaction has not started).
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*/
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function rollback(&$model) {
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if (parent::rollback($model)) {
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return $this->execute('ROLLBACK');
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}
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return false;
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}
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/**
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* Returns a formatted error message from previous database operation.
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*
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* @return string Error message with error number
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*/
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function lastError() {
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if (mysqli_errno($this->connection)) {
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return mysqli_errno($this->connection).': '.mysqli_error($this->connection);
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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 int Number of affected rows
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*/
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function lastAffected() {
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if ($this->_result) {
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return mysqli_affected_rows($this->connection);
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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 int Number of rows in resultset
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*/
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function lastNumRows() {
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if ($this->_result and is_object($this->_result)) {
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return @mysqli_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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$id = mysqli_insert_id($this->connection);
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if ($id) {
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return $id;
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}
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$data = $this->fetchAll('SELECT LAST_INSERT_ID() as id From '.$source);
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if ($data && isset($data[0]['id'])) {
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return $data[0]['id'];
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}
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}
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/**
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* Converts database-layer column types to basic types
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*
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* @param string $real Real database-layer column type (i.e. "varchar(255)")
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* @return string Abstract column type (i.e. "string")
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*/
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function column($real) {
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if (is_array($real)) {
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$col = $real['name'];
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if (isset($real['limit']))
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{
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$col .= '('.$real['limit'].')';
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}
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return $col;
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}
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$col = r(')', '', $real);
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$limit = null;
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@list($col, $limit) = explode('(', $col);
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if (in_array($col, array('date', 'time', 'datetime', 'timestamp'))) {
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return $col;
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}
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if ($col == 'tinyint' && $limit == '1') {
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return 'boolean';
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}
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if (strpos($col, 'int') !== false) {
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return 'integer';
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}
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if (strpos($col, 'char') !== false || $col == 'tinytext') {
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return 'string';
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}
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if (strpos($col, 'text') !== false) {
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return 'text';
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}
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if (strpos($col, 'blob') !== false) {
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return 'binary';
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}
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if (in_array($col, array('float', 'double', 'decimal'))) {
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return 'float';
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}
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if (strpos($col, 'enum') !== false) {
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return "enum($limit)";
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}
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if ($col == 'boolean') {
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return $col;
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}
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return 'text';
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}
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/**
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* Enter description here...
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*
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* @param unknown_type $results
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*/
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function resultSet(&$results) {
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$this->results =& $results;
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$this->map = array();
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$num_fields = mysqli_num_fields($results);
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$index = 0;
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$j = 0;
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while ($j < $num_fields) {
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$column = mysqli_fetch_field_direct($results, $j);
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if (!empty($column->table)) {
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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 unknown
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*/
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function fetchResult() {
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if ($row = mysqli_fetch_row($this->results)) {
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$resultRow = array();
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$i = 0;
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foreach ($row as $index => $field) {
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@list($table, $column) = $this->map[$index];
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$resultRow[$table][$column] = $row[$index];
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$i++;
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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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* Enter description here...
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*
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* @param unknown_type $schema
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* @return unknown
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*/
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function buildSchemaQuery($schema) {
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$search = array('{AUTOINCREMENT}', '{PRIMARY}', '{UNSIGNED}', '{FULLTEXT}',
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'{FULLTEXT_MYSQL}', '{BOOLEAN}', '{UTF_8}');
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$replace = array('int(11) not null auto_increment', 'primary key', 'unsigned',
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'FULLTEXT', 'FULLTEXT', 'enum (\'true\', \'false\') NOT NULL default \'true\'',
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'/*!40100 CHARACTER SET utf8 COLLATE utf8_unicode_ci */');
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$query = trim(r($search, $replace, $schema));
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return $query;
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}
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}
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?>
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