/cake/libs/model/datasources/dbo/dbo_mysqli.php
PHP | 427 lines | 256 code | 23 blank | 148 comment | 84 complexity | f05f3c4bbac61a860e4cecbe664be8de MD5 | raw file
- <?php
- /* SVN FILE: $Id$ */
- /**
- * 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 $Revision$
- * @modifiedby $LastChangedBy$
- * @lastmodified $Date$
- * @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);
- }
- }
- ?>