WebSVN – lars-tiefland.cakephp – /cake/libs/model/datasources/dbo/dbo_mysqli.php

<?php
/* SVN FILE: $Id: dbo_mysqli.php 7945 2008-12-19 02:16:01Z gwoo $ */
/**
 * MySQLi layer for DBO
 *
 * Long description for file
 *
 * PHP versions 4 and 5
 *
 * CakePHP(tm) :  Rapid Development Framework (http://www.cakephp.org)
 * Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @filesource
 * @copyright     Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
 * @link          http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
 * @package       cake
 * @subpackage    cake.cake.libs.model.datasources.dbo
 * @since         CakePHP(tm) v 1.1.4.2974
 * @version       $Revision: 7945 $
 * @modifiedby    $LastChangedBy: gwoo $
 * @lastmodified  $Date: 2008-12-18 18:16:01 -0800 (Thu, 18 Dec 2008) $
 * @license       http://www.opensource.org/licenses/mit-license.php The MIT License
 */
App::import('Core', 'DboMysql');
/**
 * MySQLi DBO driver object
 *
 * Provides connection and SQL generation for MySQL RDMS using PHP's MySQLi Interface
 *
 * @package       cake
 * @subpackage    cake.cake.libs.model.datasources.dbo
 */
class DboMysqli extends DboMysqlBase {
/**
 * Enter description here...
 *
 * @var unknown_type
 */
        var $description = "Mysqli DBO Driver";
/**
 * Base configuration settings for Mysqli driver
 *
 * @var array
 */
        var $_baseConfig = array(
                'persistent' => true,
                'host' => 'localhost',
                'login' => 'root',
                'password' => '',
                'database' => 'cake',
                'port' => '3306',
                'connect' => 'mysqli_connect'
        );
/**
 * Connects to the database using options in the given configuration array.
 *
 * @return boolean True if the database could be connected, else false
 */
        function connect() {
                $config = $this->config;
                $this->connected = false;

                if (is_numeric($config['port'])) {
                        $config['socket'] = null;
                } else {
                        $config['socket'] = $config['port'];
                        $config['port'] = null;
                }

                $this->connection = mysqli_connect($config['host'], $config['login'], $config['password'], $config['database'], $config['port'], $config['socket']);

                if ($this->connection !== false) {
                        $this->connected = true;
                }
                
                $this->_useAlias = (bool)version_compare(mysqli_get_server_info($this->connection), "4.1", ">=");
                
                if (!empty($config['encoding'])) {
                        $this->setEncoding($config['encoding']);
                }
                return $this->connected;
        }
/**
 * Disconnects from database.
 *
 * @return boolean True if the database could be disconnected, else false
 */
        function disconnect() {
                if (isset($this->results) && is_resource($this->results)) {
                        mysqli_free_result($this->results);
                }
                $this->connected = !@mysqli_close($this->connection);
                return !$this->connected;
        }
/**
 * Executes given SQL statement.
 *
 * @param string $sql SQL statement
 * @return resource Result resource identifier
 * @access protected
 */
        function _execute($sql) {
                if (preg_match('/^\s*call/i', $sql)) {
                        return $this->_executeProcedure($sql);
                } else {
                        return mysqli_query($this->connection, $sql);
                }
        }
/**
 * Executes given SQL statement (procedure call).
 *
 * @param string $sql SQL statement (procedure call)
 * @return resource Result resource identifier for first recordset
 * @access protected
 */
        function _executeProcedure($sql) {
                $answer = mysqli_multi_query($this->connection, $sql);

                $firstResult = mysqli_store_result($this->connection);

                if (mysqli_more_results($this->connection)) {
                        while ($lastResult = mysqli_next_result($this->connection));
                }
                return $firstResult;
        }
/**
 * Returns an array of sources (tables) in the database.
 *
 * @return array Array of tablenames in the database
 */
        function listSources() {
                $cache = parent::listSources();
                if ($cache != null) {
                        return $cache;
                }
                $result = $this->_execute('SHOW TABLES FROM ' . $this->name($this->config['database']) . ';');

                if (!$result) {
                        return array();
                } else {
                        $tables = array();

                        while ($line = mysqli_fetch_array($result)) {
                                $tables[] = $line[0];
                        }
                        parent::listSources($tables);
                        return $tables;
                }
        }
/**
 * Returns an array of the fields in given table name.
 *
 * @param string $tableName Name of database table to inspect
 * @return array Fields in table. Keys are name and type
 */
        function describe(&$model) {

                $cache = parent::describe($model);
                if ($cache != null) {
                        return $cache;
                }

                $fields = false;
                $cols = $this->query('DESCRIBE ' . $this->fullTableName($model));

                foreach ($cols as $column) {
                        $colKey = array_keys($column);
                        if (isset($column[$colKey[0]]) && !isset($column[0])) {
                                $column[0] = $column[$colKey[0]];
                        }
                        if (isset($column[0])) {
                                $fields[$column[0]['Field']] = array(
                                        'type'          => $this->column($column[0]['Type']),
                                        'null'          => ($column[0]['Null'] == 'YES' ? true : false),
                                        'default'       => $column[0]['Default'],
                                        'length'        => $this->length($column[0]['Type'])
                                );
                                if (!empty($column[0]['Key']) && isset($this->index[$column[0]['Key']])) {
                                        $fields[$column[0]['Field']]['key']     = $this->index[$column[0]['Key']];
                                }
                        }
                }

                $this->__cacheDescription($this->fullTableName($model, false), $fields);
                return $fields;
        }
/**
 * Returns a quoted and escaped string of $data for use in an SQL statement.
 *
 * @param string $data String to be prepared for use in an SQL statement
 * @param string $column The column into which this data will be inserted
 * @param boolean $safe Whether or not numeric data should be handled automagically if no column data is provided
 * @return string Quoted and escaped data
 */
        function value($data, $column = null, $safe = false) {
                $parent = parent::value($data, $column, $safe);

                if ($parent != null) {
                        return $parent;
                }

                if ($data === null) {
                        return 'NULL';
                }

                if ($data === '' && $column !== 'integer' && $column !== 'float' && $column !== 'boolean') {
                        return  "''";
                }

                switch ($column) {
                        case 'boolean':
                                $data = $this->boolean((bool)$data);
                        break;
                        case 'integer' :
                        case 'float' :
                        case null :
                                if ($data === '') {
                                        return 'NULL';
                                }
                                if ((is_int($data) || is_float($data) || $data === '0') || (
                                        is_numeric($data) && strpos($data, ',') === false &&
                                        $data[0] != '0' && strpos($data, 'e') === false)) {
                                                return $data;
                                        }
                        default:
                                $data = "'" . mysqli_real_escape_string($this->connection, $data) . "'";
                        break;
                }

                return $data;
        }
/**
 * Begin a transaction
 *
 * @param unknown_type $model
 * @return boolean True on success, false on fail
 * (i.e. if the database/model does not support transactions).
 */
        function begin(&$model) {
                if (parent::begin($model) && $this->execute('START TRANSACTION')) {
                        $this->_transactionStarted = true;
                        return true;
                }
                return false;
        }
/**
 * Returns a formatted error message from previous database operation.
 *
 * @return string Error message with error number
 */
        function lastError() {
                if (mysqli_errno($this->connection)) {
                        return mysqli_errno($this->connection).': '.mysqli_error($this->connection);
                }
                return null;
        }
/**
 * Returns number of affected rows in previous database operation. If no previous operation exists,
 * this returns false.
 *
 * @return integer Number of affected rows
 */
        function lastAffected() {
                if ($this->_result) {
                        return mysqli_affected_rows($this->connection);
                }
                return null;
        }
/**
 * Returns number of rows in previous resultset. If no previous resultset exists,
 * this returns false.
 *
 * @return integer Number of rows in resultset
 */
        function lastNumRows() {
                if ($this->hasResult()) {
                        return mysqli_num_rows($this->_result);
                }
                return null;
        }
/**
 * Returns the ID generated from the previous INSERT operation.
 *
 * @param unknown_type $source
 * @return in
 */
        function lastInsertId($source = null) {
                $id = $this->fetchRow('SELECT LAST_INSERT_ID() AS insertID', false);
                if ($id !== false && !empty($id) && !empty($id[0]) && isset($id[0]['insertID'])) {
                        return $id[0]['insertID'];
                }

                return null;
        }
/**
 * 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';
        }
/**
 * Gets the length of a database-native column description, or null if no length
 *
 * @param string $real Real database-layer column type (i.e. "varchar(255)")
 * @return integer An integer representing the length of the column
 */
        function length($real) {
                $col = str_replace(array(')', 'unsigned'), '', $real);
                $limit = null;

                if (strpos($col, '(') !== false) {
                        list($col, $limit) = explode('(', $col);
                }

                if ($limit != null) {
                        return intval($limit);
                }
                return null;
        }
/**
 * Enter description here...
 *
 * @param unknown_type $results
 */
        function resultSet(&$results) {
                if (isset($this->results) && is_resource($this->results) && $this->results != $results) {
                        mysqli_free_result($this->results);
                }
                $this->results =& $results;
                $this->map = array();
                $numFields = mysqli_num_fields($results);
                $index = 0;
                $j = 0;
                while ($j < $numFields) {
                        $column = mysqli_fetch_field_direct($results, $j);
                        if (!empty($column->table)) {
                                $this->map[$index++] = array($column->table, $column->name);
                        } else {
                                $this->map[$index++] = array(0, $column->name);
                        }
                        $j++;
                }
        }
/**
 * Fetches the next row from the current result set
 *
 * @return unknown
 */
        function fetchResult() {
                if ($row = mysqli_fetch_row($this->results)) {
                        $resultRow = array();
                        $i = 0;
                        foreach ($row as $index => $field) {
                                $table = $column = null;
                                if (count($this->map[$index]) == 2) {
                                        list($table, $column) = $this->map[$index];
                                }
                                $resultRow[$table][$column] = $row[$index];
                                $i++;
                        }
                        return $resultRow;
                } else {
                        return false;
                }
        }
/**
 * Gets the database encoding
 *
 * @return string The database encoding
 */
        function getEncoding() {
                return mysqli_client_encoding($this->connection);
        }
/**
 * Checks if the result is valid
 *
 * @return boolean True if the result is valid, else false
 */
        function hasResult() {
                return is_object($this->_result);
        }
}
?>
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(root)/cake/libs/model/datasources/dbo/dbo_mysqli.php – Revision 1
