diff options
Diffstat (limited to 'system/database')
| -rw-r--r-- | system/database/DB_active_rec.php | 8 | ||||
| -rw-r--r-- | system/database/DB_cache.php | 2 | ||||
| -rw-r--r-- | system/database/DB_driver.php | 28 | ||||
| -rw-r--r-- | system/database/DB_forge.php | 2 | ||||
| -rw-r--r-- | system/database/DB_utility.php | 2 | ||||
| -rw-r--r-- | system/database/drivers/mysql/mysql_driver.php | 19 | ||||
| -rw-r--r-- | system/database/drivers/mysql/mysql_result.php | 4 | ||||
| -rw-r--r-- | system/database/drivers/mysqli/mysqli_driver.php | 21 | ||||
| -rw-r--r-- | system/database/drivers/mysqli/mysqli_result.php | 4 | ||||
| -rw-r--r-- | system/database/drivers/oci8/oci8_driver.php | 37 | ||||
| -rw-r--r-- | system/database/drivers/oci8/oci8_result.php | 17 | ||||
| -rw-r--r-- | system/database/drivers/odbc/odbc_driver.php | 4 | ||||
| -rw-r--r-- | system/database/drivers/pdo/index.html | 10 | ||||
| -rw-r--r-- | system/database/drivers/pdo/pdo_driver.php | 792 | ||||
| -rw-r--r-- | system/database/drivers/pdo/pdo_forge.php | 266 | ||||
| -rw-r--r-- | system/database/drivers/pdo/pdo_result.php | 171 | ||||
| -rw-r--r-- | system/database/drivers/pdo/pdo_utility.php | 103 |
17 files changed, 1423 insertions, 67 deletions
diff --git a/system/database/DB_active_rec.php b/system/database/DB_active_rec.php index 59cd1972c..f99d13ec8 100644 --- a/system/database/DB_active_rec.php +++ b/system/database/DB_active_rec.php @@ -199,7 +199,7 @@ class CI_DB_active_record extends CI_DB_driver { $alias = $this->_create_alias_from_table(trim($select)); } - $sql = $type.'('.$this->_protect_identifiers(trim($select)).') AS '.$this->_protect_identifiers(trim($alias)); + $sql = $this->_protect_identifiers($type.'('.trim($select).')').' AS '.$this->_protect_identifiers(trim($alias)); $this->ar_select[] = $sql; @@ -875,11 +875,11 @@ class CI_DB_active_record extends CI_DB_driver { * @param integer the offset value * @return object */ - public function limit($value, $offset = '') + public function limit($value, $offset = NULL) { $this->ar_limit = (int) $value; - if ($offset != '') + if ( ! is_null($offset)) { $this->ar_offset = (int) $offset; } @@ -897,7 +897,7 @@ class CI_DB_active_record extends CI_DB_driver { */ public function offset($offset) { - $this->ar_offset = $offset; + $this->ar_offset = (int) $offset; return $this; } diff --git a/system/database/DB_cache.php b/system/database/DB_cache.php index 3bf065ca5..ad1c28d72 100644 --- a/system/database/DB_cache.php +++ b/system/database/DB_cache.php @@ -33,7 +33,7 @@ class CI_DB_Cache { * Grabs the CI super object instance so we can access it. * */ - function CI_DB_Cache(&$db) + function __construct(&$db) { // Assign the main CI object to $this->CI // and load the file helper since we use it a lot diff --git a/system/database/DB_driver.php b/system/database/DB_driver.php index f3e824daa..d7b63b9dc 100644 --- a/system/database/DB_driver.php +++ b/system/database/DB_driver.php @@ -78,7 +78,7 @@ class CI_DB_driver { * * @param array */ - function CI_DB_driver($params) + function __construct($params) { if (is_array($params)) { @@ -218,7 +218,7 @@ class CI_DB_driver { // Some DBs have functions that return the version, and don't run special // SQL queries per se. In these instances, just return the result. - $driver_version_exceptions = array('oci8', 'sqlite', 'cubrid'); + $driver_version_exceptions = array('oci8', 'sqlite', 'cubrid', 'pdo'); if (in_array($this->dbdriver, $driver_version_exceptions)) { @@ -251,9 +251,10 @@ class CI_DB_driver { { if ($sql == '') { + log_message('error', 'Invalid query: '.$sql); + if ($this->db_debug) { - log_message('error', 'Invalid query: '.$sql); return $this->display_error('db_invalid_query'); } return FALSE; @@ -306,21 +307,23 @@ class CI_DB_driver { // This will trigger a rollback if transactions are being used $this->_trans_status = FALSE; + // Grab the error number and message now, as we might run some + // additional queries before displaying the error + $error_no = $this->_error_number(); + $error_msg = $this->_error_message(); + + // Log errors + log_message('error', 'Query error: '.$error_msg); + if ($this->db_debug) { - // grab the error number and message now, as we might run some - // additional queries before displaying the error - $error_no = $this->_error_number(); - $error_msg = $this->_error_message(); - // We call this function in order to roll-back queries // if transactions are enabled. If we don't call this here // the error message will trigger an exit, causing the // transactions to remain in limbo. $this->trans_complete(); - // Log and display errors - log_message('error', 'Query error: '.$error_msg); + // Display errors return $this->display_error( array( 'Error Number: '.$error_no, @@ -947,6 +950,7 @@ class CI_DB_driver { foreach ($where as $key => $val) { $prefix = (count($dest) == 0) ? '' : ' AND '; + $key = $this->_protect_identifiers($key); if ($val !== '') { @@ -1162,7 +1166,7 @@ class CI_DB_driver { if ($native == TRUE) { - $message = $error; + $message = (array) $error; } else { @@ -1387,4 +1391,4 @@ class CI_DB_driver { /* End of file DB_driver.php */ -/* Location: ./system/database/DB_driver.php */
\ No newline at end of file +/* Location: ./system/database/DB_driver.php */ diff --git a/system/database/DB_forge.php b/system/database/DB_forge.php index 0dd29c238..6bc40411b 100644 --- a/system/database/DB_forge.php +++ b/system/database/DB_forge.php @@ -35,7 +35,7 @@ class CI_DB_forge { * Grabs the CI super object instance so we can access it. * */ - function CI_DB_forge() + function __construct() { // Assign the main database object to $this->db $CI =& get_instance(); diff --git a/system/database/DB_utility.php b/system/database/DB_utility.php index a5f174f0a..52196b7ce 100644 --- a/system/database/DB_utility.php +++ b/system/database/DB_utility.php @@ -33,7 +33,7 @@ class CI_DB_utility extends CI_DB_forge { * Grabs the CI super object instance so we can access it. * */ - function CI_DB_utility() + function __construct() { // Assign the main database object to $this->db $CI =& get_instance(); diff --git a/system/database/drivers/mysql/mysql_driver.php b/system/database/drivers/mysql/mysql_driver.php index f87cfea4b..dc020c624 100644 --- a/system/database/drivers/mysql/mysql_driver.php +++ b/system/database/drivers/mysql/mysql_driver.php @@ -56,7 +56,7 @@ class CI_DB_mysql_driver extends CI_DB { // whether SET NAMES must be used to set the character set var $use_set_names; - + /** * Non-persistent database connection * @@ -135,20 +135,9 @@ class CI_DB_mysql_driver extends CI_DB { */ function db_set_charset($charset, $collation) { - if ( ! isset($this->use_set_names)) - { - // mysql_set_charset() requires PHP >= 5.2.3 and MySQL >= 5.0.7, use SET NAMES as fallback - $this->use_set_names = (version_compare(PHP_VERSION, '5.2.3', '>=') && version_compare(mysql_get_server_info(), '5.0.7', '>=')) ? FALSE : TRUE; - } - - if ($this->use_set_names === TRUE) - { - return @mysql_query("SET NAMES '".$this->escape_str($charset)."' COLLATE '".$this->escape_str($collation)."'", $this->conn_id); - } - else - { - return @mysql_set_charset($charset, $this->conn_id); - } + return function_exists('mysql_set_charset') + ? @mysql_set_charset($charset, $this->conn_id) + : @mysql_query("SET NAMES '".$this->escape_str($charset)."' COLLATE '".$this->escape_str($collation)."'", $this->conn_id); } // -------------------------------------------------------------------- diff --git a/system/database/drivers/mysql/mysql_result.php b/system/database/drivers/mysql/mysql_result.php index 2d2905c98..6ceaf4b9b 100644 --- a/system/database/drivers/mysql/mysql_result.php +++ b/system/database/drivers/mysql/mysql_result.php @@ -86,10 +86,10 @@ class CI_DB_mysql_result extends CI_DB_result { $retval = array(); while ($field = mysql_fetch_object($this->result_id)) { - preg_match('/([a-zA-Z]+)\((\d+)\)/', $field->Type, $matches); + preg_match('/([a-zA-Z]+)(\((\d+)\))?/i', $field->Type, $matches); $type = $matches[1]; - $length = (int)$matches[2]; + $length = isset($matches[3]) ? (int) $matches[3] : NULL; $F = new stdClass(); $F->name = $field->Field; diff --git a/system/database/drivers/mysqli/mysqli_driver.php b/system/database/drivers/mysqli/mysqli_driver.php index ccd110f79..abef80fbd 100644 --- a/system/database/drivers/mysqli/mysqli_driver.php +++ b/system/database/drivers/mysqli/mysqli_driver.php @@ -56,7 +56,7 @@ class CI_DB_mysqli_driver extends CI_DB { // whether SET NAMES must be used to set the character set var $use_set_names; - + // -------------------------------------------------------------------- /** @@ -135,20 +135,9 @@ class CI_DB_mysqli_driver extends CI_DB { */ function _db_set_charset($charset, $collation) { - if ( ! isset($this->use_set_names)) - { - // mysqli_set_charset() requires MySQL >= 5.0.7, use SET NAMES as fallback - $this->use_set_names = (version_compare(mysqli_get_server_info($this->conn_id), '5.0.7', '>=')) ? FALSE : TRUE; - } - - if ($this->use_set_names === TRUE) - { - return @mysqli_query($this->conn_id, "SET NAMES '".$this->escape_str($charset)."' COLLATE '".$this->escape_str($collation)."'"); - } - else - { - return @mysqli_set_charset($this->conn_id, $charset); - } + return function_exists('mysqli_set_charset') + ? @mysqli_set_charset($this->conn_id, $charset) + : @mysqli_query($this->conn_id, "SET NAMES '".$this->escape_str($charset)."' COLLATE '".$this->escape_str($collation)."'"); } // -------------------------------------------------------------------- @@ -570,7 +559,7 @@ class CI_DB_mysqli_driver extends CI_DB { { return "INSERT INTO ".$table." (".implode(', ', $keys).") VALUES ".implode(', ', $values); } - + // -------------------------------------------------------------------- /** diff --git a/system/database/drivers/mysqli/mysqli_result.php b/system/database/drivers/mysqli/mysqli_result.php index ac863056a..bbfb8481a 100644 --- a/system/database/drivers/mysqli/mysqli_result.php +++ b/system/database/drivers/mysqli/mysqli_result.php @@ -86,10 +86,10 @@ class CI_DB_mysqli_result extends CI_DB_result { $retval = array(); while ($field = mysqli_fetch_object($this->result_id)) { - preg_match('/([a-zA-Z]+)\((\d+)\)/', $field->Type, $matches); + preg_match('/([a-zA-Z]+)(\((\d+)\))?/i', $field->Type, $matches); $type = $matches[1]; - $length = (int)$matches[2]; + $length = isset($matches[3]) ? (int) $matches[3] : NULL; $F = new stdClass(); $F->name = $field->Field; diff --git a/system/database/drivers/oci8/oci8_driver.php b/system/database/drivers/oci8/oci8_driver.php index 42cfaaefb..1cf063ec1 100644 --- a/system/database/drivers/oci8/oci8_driver.php +++ b/system/database/drivers/oci8/oci8_driver.php @@ -79,7 +79,7 @@ class CI_DB_oci8_driver extends CI_DB { */ function db_connect() { - return @ocilogon($this->username, $this->password, $this->hostname); + return @ocilogon($this->username, $this->password, $this->hostname, $this->char_set); } // -------------------------------------------------------------------- @@ -92,7 +92,7 @@ class CI_DB_oci8_driver extends CI_DB { */ function db_pconnect() { - return @ociplogon($this->username, $this->password, $this->hostname); + return @ociplogon($this->username, $this->password, $this->hostname, $this->char_set); } // -------------------------------------------------------------------- @@ -136,7 +136,7 @@ class CI_DB_oci8_driver extends CI_DB { */ function db_set_charset($charset, $collation) { - // @todo - add support if needed + // this is done upon connect return TRUE; } @@ -404,6 +404,7 @@ class CI_DB_oci8_driver extends CI_DB { } $str = remove_invisible_characters($str); + $str = str_replace("'", "''", $str); // escape LIKE condition wildcards if ($like === TRUE) @@ -642,6 +643,34 @@ class CI_DB_oci8_driver extends CI_DB { // -------------------------------------------------------------------- /** + * Insert_batch statement + * + * Generates a platform-specific insert string from the supplied data + * + * @access public + * @param string the table name + * @param array the insert keys + * @param array the insert values + * @return string + */ + function _insert_batch($table, $keys, $values) + { + $keys = implode(', ', $keys); + $sql = "INSERT ALL\n"; + + for ($i = 0, $c = count($values); $i < $c; $i++) + { + $sql .= ' INTO ' . $table . ' (' . $keys . ') VALUES ' . $values[$i] . "\n"; + } + + $sql .= 'SELECT * FROM dual'; + + return $sql; + } + + // -------------------------------------------------------------------- + + /** * Update statement * * Generates a platform-specific update string from the supplied data @@ -775,4 +804,4 @@ class CI_DB_oci8_driver extends CI_DB { /* End of file oci8_driver.php */ -/* Location: ./system/database/drivers/oci8/oci8_driver.php */
\ No newline at end of file +/* Location: ./system/database/drivers/oci8/oci8_driver.php */ diff --git a/system/database/drivers/oci8/oci8_result.php b/system/database/drivers/oci8/oci8_result.php index 88531b436..2713f6f12 100644 --- a/system/database/drivers/oci8/oci8_result.php +++ b/system/database/drivers/oci8/oci8_result.php @@ -42,15 +42,18 @@ class CI_DB_oci8_result extends CI_DB_result { */ function num_rows() { - $rowcount = count($this->result_array()); - @ociexecute($this->stmt_id); - - if ($this->curs_id) + if ($this->num_rows === 0 && count($this->result_array()) > 0) { - @ociexecute($this->curs_id); + $this->num_rows = count($this->result_array()); + @ociexecute($this->stmt_id); + + if ($this->curs_id) + { + @ociexecute($this->curs_id); + } } - return $rowcount; + return $this->num_rows; } // -------------------------------------------------------------------- @@ -246,4 +249,4 @@ class CI_DB_oci8_result extends CI_DB_result { /* End of file oci8_result.php */ -/* Location: ./system/database/drivers/oci8/oci8_result.php */
\ No newline at end of file +/* Location: ./system/database/drivers/oci8/oci8_result.php */ diff --git a/system/database/drivers/odbc/odbc_driver.php b/system/database/drivers/odbc/odbc_driver.php index 5e764e071..bcd7937d9 100644 --- a/system/database/drivers/odbc/odbc_driver.php +++ b/system/database/drivers/odbc/odbc_driver.php @@ -48,9 +48,9 @@ class CI_DB_odbc_driver extends CI_DB { var $_random_keyword; - function CI_DB_odbc_driver($params) + function __construct($params) { - parent::CI_DB($params); + parent::__construct($params); $this->_random_keyword = ' RND('.time().')'; // database specific random keyword } diff --git a/system/database/drivers/pdo/index.html b/system/database/drivers/pdo/index.html new file mode 100644 index 000000000..c942a79ce --- /dev/null +++ b/system/database/drivers/pdo/index.html @@ -0,0 +1,10 @@ +<html> +<head> + <title>403 Forbidden</title> +</head> +<body> + +<p>Directory access is forbidden.</p> + +</body> +</html>
\ No newline at end of file diff --git a/system/database/drivers/pdo/pdo_driver.php b/system/database/drivers/pdo/pdo_driver.php new file mode 100644 index 000000000..19e069b06 --- /dev/null +++ b/system/database/drivers/pdo/pdo_driver.php @@ -0,0 +1,792 @@ +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +/** + * CodeIgniter + * + * An open source application development framework for PHP 5.1.6 or newer + * + * @package CodeIgniter + * @author ExpressionEngine Dev Team + * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. + * @license http://codeigniter.com/user_guide/license.html + * @link http://codeigniter.com + * @since Version 2.1.0 + * @filesource + */ + +// ------------------------------------------------------------------------ + +/** + * PDO Database Adapter Class + * + * Note: _DB is an extender class that the app controller + * creates dynamically based on whether the active record + * class is being used or not. + * + * @package CodeIgniter + * @subpackage Drivers + * @category Database + * @author ExpressionEngine Dev Team + * @link http://codeigniter.com/user_guide/database/ + */ +class CI_DB_pdo_driver extends CI_DB { + + var $dbdriver = 'pdo'; + + // the character used to excape - not necessary for PDO + var $_escape_char = ''; + var $_like_escape_str; + var $_like_escape_chr; + + + /** + * The syntax to count rows is slightly different across different + * database engines, so this string appears in each driver and is + * used for the count_all() and count_all_results() functions. + */ + var $_count_string = "SELECT COUNT(*) AS "; + var $_random_keyword; + + + function __construct($params) + { + parent::__construct($params); + + // clause and character used for LIKE escape sequences + if (strpos($this->hostname, 'mysql') !== FALSE) + { + $this->_like_escape_str = ''; + $this->_like_escape_chr = ''; + } + else if (strpos($this->hostname, 'odbc') !== FALSE) + { + $this->_like_escape_str = " {escape '%s'} "; + $this->_like_escape_chr = '!'; + } + else + { + $this->_like_escape_str = " ESCAPE '%s' "; + $this->_like_escape_chr = '!'; + } + + $this->hostname = $this->hostname . ";dbname=".$this->database; + $this->trans_enabled = FALSE; + + $this->_random_keyword = ' RND('.time().')'; // database specific random keyword + } + + /** + * Non-persistent database connection + * + * @access private called by the base class + * @return resource + */ + function db_connect() + { + return new PDO($this->hostname,$this->username,$this->password, array( + PDO::ATTR_ERRMODE => PDO::ERRMODE_SILENT + )); + } + + // -------------------------------------------------------------------- + + /** + * Persistent database connection + * + * @access private called by the base class + * @return resource + */ + function db_pconnect() + { + return new PDO($this->hostname,$this->username,$this->password, array( + PDO::ATTR_ERRMODE => PDO::ERRMODE_SILENT, + PDO::ATTR_PERSISTENT => true + )); + } + + // -------------------------------------------------------------------- + + /** + * Reconnect + * + * Keep / reestablish the db connection if no queries have been + * sent for a length of time exceeding the server's idle timeout + * + * @access public + * @return void + */ + function reconnect() + { + if ($this->db->db_debug) + { + return $this->db->display_error('db_unsuported_feature'); + } + return FALSE; + } + + // -------------------------------------------------------------------- + + /** + * Select the database + * + * @access private called by the base class + * @return resource + */ + function db_select() + { + // Not needed for PDO + return TRUE; + } + + // -------------------------------------------------------------------- + + /** + * Set client character set + * + * @access public + * @param string + * @param string + * @return resource + */ + function db_set_charset($charset, $collation) + { + // @todo - add support if needed + return TRUE; + } + + // -------------------------------------------------------------------- + + /** + * Version number query string + * + * @access public + * @return string + */ + function _version() + { + return $this->conn_id->getAttribute(PDO::ATTR_CLIENT_VERSION); + } + + // -------------------------------------------------------------------- + + /** + * Execute the query + * + * @access private called by the base class + * @param string an SQL query + * @return object + */ + function _execute($sql) + { + $sql = $this->_prep_query($sql); + $result_id = $this->conn_id->query($sql); + + if (is_object($result_id)) + { + $this->affect_rows = $result_id->rowCount(); + } + else + { + $this->affect_rows = 0; + } + + return $result_id; + } + + // -------------------------------------------------------------------- + + /** + * Prep the query + * + * If needed, each database adapter can prep the query string + * + * @access private called by execute() + * @param string an SQL query + * @return string + */ + function _prep_query($sql) + { + return $sql; + } + + // -------------------------------------------------------------------- + + /** + * Begin Transaction + * + * @access public + * @return bool + */ + function trans_begin($test_mode = FALSE) + { + if ( ! $this->trans_enabled) + { + return TRUE; + } + + // When transactions are nested we only begin/commit/rollback the outermost ones + if ($this->_trans_depth > 0) + { + return TRUE; + } + + // Reset the transaction failure flag. + // If the $test_mode flag is set to TRUE transactions will be rolled back + // even if the queries produce a successful result. + $this->_trans_failure = ($test_mode === TRUE) ? TRUE : FALSE; + + return $this->conn_id->beginTransaction(); + } + + // -------------------------------------------------------------------- + + /** + * Commit Transaction + * + * @access public + * @return bool + */ + function trans_commit() + { + if ( ! $this->trans_enabled) + { + return TRUE; + } + + // When transactions are nested we only begin/commit/rollback the outermost ones + if ($this->_trans_depth > 0) + { + return TRUE; + } + + $ret = $this->conn->commit(); + return $ret; + } + + // -------------------------------------------------------------------- + + /** + * Rollback Transaction + * + * @access public + * @return bool + */ + function trans_rollback() + { + if ( ! $this->trans_enabled) + { + return TRUE; + } + + // When transactions are nested we only begin/commit/rollback the outermost ones + if ($this->_trans_depth > 0) + { + return TRUE; + } + + $ret = $this->conn_id->rollBack(); + return $ret; + } + + // -------------------------------------------------------------------- + + /** + * Escape String + * + * @access public + * @param string + * @param bool whether or not the string will be used in a LIKE condition + * @return string + */ + function escape_str($str, $like = FALSE) + { + if (is_array($str)) + { + foreach ($str as $key => $val) + { + $str[$key] = $this->escape_str($val, $like); + } + + return $str; + } + + //Escape the string + $str = $this->conn_id->quote($str); + + //If there are duplicated quotes, trim them away + if (strpos($str, "'") === 0) + { + $str = substr($str, 1, -1); + } + + // escape LIKE condition wildcards + if ($like === TRUE) + { + $str = str_replace( array('%', '_', $this->_like_escape_chr), + array($this->_like_escape_chr.'%', $this->_like_escape_chr.'_', $this->_like_escape_chr.$this->_like_escape_chr), + $str); + } + + return $str; + } + + // -------------------------------------------------------------------- + + /** + * Affected Rows + * + * @access public + * @return integer + */ + function affected_rows() + { + return $this->affect_rows; + } + + // -------------------------------------------------------------------- + + /** + * Insert ID + * + * @access public + * @return integer + */ + function insert_id($name=NULL) + { + //Convenience method for postgres insertid + if (strpos($this->hostname, 'pgsql') !== FALSE) + { + $v = $this->_version(); + + $table = func_num_args() > 0 ? func_get_arg(0) : NULL; + + if ($table == NULL && $v >= '8.1') + { + $sql='SELECT LASTVAL() as ins_id'; + } + $query = $this->query($sql); + $row = $query->row(); + return $row->ins_id; + } + else + { + return $this->conn_id->lastInsertId($name); + } + } + + // -------------------------------------------------------------------- + + /** + * "Count All" query + * + * Generates a platform-specific query string that counts all records in + * the specified database + * + * @access public + * @param string + * @return string + */ + function count_all($table = '') + { + if ($table == '') + { + return 0; + } + + $query = $this->query($this->_count_string . $this->_protect_identifiers('numrows') . " FROM " . $this->_protect_identifiers($table, TRUE, NULL, FALSE)); + + if ($query->num_rows() == 0) + { + return 0; + } + + $row = $query->row(); + $this->_reset_select(); + return (int) $row->numrows; + } + + // -------------------------------------------------------------------- + + /** + * Show table query + * + * Generates a platform-specific query string so that the table names can be fetched + * + * @access private + * @param boolean + * @return string + */ + function _list_tables($prefix_limit = FALSE) + { + $sql = "SHOW TABLES FROM `".$this->database."`"; + + if ($prefix_limit !== FALSE AND $this->dbprefix != '') + { + //$sql .= " LIKE '".$this->escape_like_str($this->dbprefix)."%' ".sprintf($this->_like_escape_str, $this->_like_escape_chr); + return FALSE; // not currently supported + } + + return $sql; + } + + // -------------------------------------------------------------------- + + /** + * Show column query + * + * Generates a platform-specific query string so that the column names can be fetched + * + * @access public + * @param string the table name + * @return string + */ + function _list_columns($table = '') + { + return "SHOW COLUMNS FROM ".$table; + } + + // -------------------------------------------------------------------- + + /** + * Field data query + * + * Generates a platform-specific query so that the column data can be retrieved + * + * @access public + * @param string the table name + * @return object + */ + function _field_data($table) + { + return "SELECT TOP 1 FROM ".$table; + } + + // -------------------------------------------------------------------- + + /** + * The error message string + * + * @access private + * @return string + */ + function _error_message() + { + $error_array = $this->conn_id->errorInfo(); + return $error_array[2]; + } + + // -------------------------------------------------------------------- + + /** + * The error message number + * + * @access private + * @return integer + */ + function _error_number() + { + return $this->conn_id->errorCode(); + } + + // -------------------------------------------------------------------- + + /** + * Escape the SQL Identifiers + * + * This function escapes column and table names + * + * @access private + * @param string + * @return string + */ + function _escape_identifiers($item) + { + if ($this->_escape_char == '') + { + return $item; + } + + foreach ($this->_reserved_identifiers as $id) + { + if (strpos($item, '.'.$id) !== FALSE) + { + $str = $this->_escape_char. str_replace('.', $this->_escape_char.'.', $item); + + // remove duplicates if the user already included the escape + return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str); + } + } + + if (strpos($item, '.') !== FALSE) + { + $str = $this->_escape_char.str_replace('.', $this->_escape_char.'.'.$this->_escape_char, $item).$this->_escape_char; + + } + else + { + $str = $this->_escape_char.$item.$this->_escape_char; + } + + // remove duplicates if the user already included the escape + return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str); + } + + // -------------------------------------------------------------------- + + /** + * From Tables + * + * This function implicitly groups FROM tables so there is no confusion + * about operator precedence in harmony with SQL standards + * + * @access public + * @param type + * @return type + */ + function _from_tables($tables) + { + if ( ! is_array($tables)) + { + $tables = array($tables); + } + + return (count($tables) == 1) ? $tables[0] : '('.implode(', ', $tables).')'; + } + + // -------------------------------------------------------------------- + + /** + * Insert statement + * + * Generates a platform-specific insert string from the supplied data + * + * @access public + * @param string the table name + * @param array the insert keys + * @param array the insert values + * @return string + */ + function _insert($table, $keys, $values) + { + return "INSERT INTO ".$table." (".implode(', ', $keys).") VALUES (".implode(', ', $values).")"; + } + + // -------------------------------------------------------------------- + + /** + * Insert_batch statement + * + * Generates a platform-specific insert string from the supplied data + * + * @access public + * @param string the table name + * @param array the insert keys + * @param array the insert values + * @return string + */ + function _insert_batch($table, $keys, $values) + { + return "INSERT INTO ".$table." (".implode(', ', $keys).") VALUES ".implode(', ', $values); + } + + // -------------------------------------------------------------------- + + /** + * Update statement + * + * Generates a platform-specific update string from the supplied data + * + * @access public + * @param string the table name + * @param array the update data + * @param array the where clause + * @param array the orderby clause + * @param array the limit clause + * @return string + */ + function _update($table, $values, $where, $orderby = array(), $limit = FALSE) + { + foreach ($values as $key => $val) + { + $valstr[] = $key." = ".$val; + } + + $limit = ( ! $limit) ? '' : ' LIMIT '.$limit; + + $orderby = (count($orderby) >= 1)?' ORDER BY '.implode(", ", $orderby):''; + + $sql = "UPDATE ".$table." SET ".implode(', ', $valstr); + + $sql .= ($where != '' AND count($where) >=1) ? " WHERE ".implode(" ", $where) : ''; + + $sql .= $orderby.$limit; + + return $sql; + } + + // -------------------------------------------------------------------- + + /** + * Update_Batch statement + * + * Generates a platform-specific batch update string from the supplied data + * + * @access public + * @param string the table name + * @param array the update data + * @param array the where clause + * @return string + */ + function _update_batch($table, $values, $index, $where = NULL) + { + $ids = array(); + $where = ($where != '' AND count($where) >=1) ? implode(" ", $where).' AND ' : ''; + + foreach ($values as $key => $val) + { + $ids[] = $val[$index]; + + foreach (array_keys($val) as $field) + { + if ($field != $index) + { + $final[$field][] = 'WHEN '.$index.' = '.$val[$index].' THEN '.$val[$field]; + } + } + } + + $sql = "UPDATE ".$table." SET "; + $cases = ''; + + foreach ($final as $k => $v) + { + $cases .= $k.' = CASE '."\n"; + foreach ($v as $row) + { + $cases .= $row."\n"; + } + + $cases .= 'ELSE '.$k.' END, '; + } + + $sql .= substr($cases, 0, -2); + + $sql .= ' WHERE '.$where.$index.' IN ('.implode(',', $ids).')'; + + return $sql; + } + + + // -------------------------------------------------------------------- + + /** + * Truncate statement + * + * Generates a platform-specific truncate string from the supplied data + * If the database does not support the truncate() command + * This function maps to "DELETE FROM table" + * + * @access public + * @param string the table name + * @return string + */ + function _truncate($table) + { + return $this->_delete($table); + } + + // -------------------------------------------------------------------- + + /** + * Delete statement + * + * Generates a platform-specific delete string from the supplied data + * + * @access public + * @param string the table name + * @param array the where clause + * @param string the limit clause + * @return string + */ + function _delete($table, $where = array(), $like = array(), $limit = FALSE) + { + $conditions = ''; + + if (count($where) > 0 OR count($like) > 0) + { + $conditions = "\nWHERE "; + $conditions .= implode("\n", $this->ar_where); + + if (count($where) > 0 && count($like) > 0) + { + $conditions .= " AND "; + } + $conditions .= implode("\n", $like); + } + + $limit = ( ! $limit) ? '' : ' LIMIT '.$limit; + + return "DELETE FROM ".$table.$conditions.$limit; + } + + // -------------------------------------------------------------------- + + /** + * Limit string + * + * Generates a platform-specific LIMIT clause + * + * @access public + * @param string the sql query string + * @param integer the number of rows to limit the query to + * @param integer the offset value + * @return string + */ + function _limit($sql, $limit, $offset) + { + if (strpos($this->hostname, 'cubrid') !== FALSE || strpos($this->hostname, 'sqlite') !== FALSE) + { + if ($offset == 0) + { + $offset = ''; + } + else + { + $offset .= ", "; + } + + return $sql."LIMIT ".$offset.$limit; + } + else + { + $sql .= "LIMIT ".$limit; + + if ($offset > 0) + { + $sql .= " OFFSET ".$offset; + } + + return $sql; + } + } + + // -------------------------------------------------------------------- + + /** + * Close DB Connection + * + * @access public + * @param resource + * @return void + */ + function _close($conn_id) + { + $this->conn_id = null; + } + + +} + + + +/* End of file pdo_driver.php */ +/* Location: ./system/database/drivers/pdo/pdo_driver.php */
\ No newline at end of file diff --git a/system/database/drivers/pdo/pdo_forge.php b/system/database/drivers/pdo/pdo_forge.php new file mode 100644 index 000000000..5516873c0 --- /dev/null +++ b/system/database/drivers/pdo/pdo_forge.php @@ -0,0 +1,266 @@ +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +/** + * CodeIgniter + * + * An open source application development framework for PHP 5.1.6 or newer + * + * @package CodeIgniter + * @author ExpressionEngine Dev Team + * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. + * @license http://codeigniter.com/user_guide/license.html + * @link http://codeigniter.com + * @since Version 2.1.0 + * @filesource + */ + +// ------------------------------------------------------------------------ + +/** + * PDO Forge Class + * + * @category Database + * @author ExpressionEngine Dev Team + * @link http://codeigniter.com/database/ + */ +class CI_DB_pdo_forge extends CI_DB_forge { + + /** + * Create database + * + * @access private + * @param string the database name + * @return bool + */ + function _create_database() + { + // PDO has no "create database" command since it's + // designed to connect to an existing database + if ($this->db->db_debug) + { + return $this->db->display_error('db_unsuported_feature'); + } + return FALSE; + } + + // -------------------------------------------------------------------- + + /** + * Drop database + * + * @access private + * @param string the database name + * @return bool + */ + function _drop_database($name) + { + // PDO has no "drop database" command since it's + // designed to connect to an existing database + if ($this->db->db_debug) + { + return $this->db->display_error('db_unsuported_feature'); + } + return FALSE; + } + + // -------------------------------------------------------------------- + + /** + * Create Table + * + * @access private + * @param string the table name + * @param array the fields + * @param mixed primary key(s) + * @param mixed key(s) + * @param boolean should 'IF NOT EXISTS' be added to the SQL + * @return bool + */ + function _create_table($table, $fields, $primary_keys, $keys, $if_not_exists) + { + $sql = 'CREATE TABLE '; + + if ($if_not_exists === TRUE) + { + $sql .= 'IF NOT EXISTS '; + } + + $sql .= $this->db->_escape_identifiers($table)." ("; + $current_field_count = 0; + + foreach ($fields as $field=>$attributes) + { + // Numeric field names aren't allowed in databases, so if the key is + // numeric, we know it was assigned by PHP and the developer manually + // entered the field information, so we'll simply add it to the list + if (is_numeric($field)) + { + $sql .= "\n\t$attributes"; + } + else + { + $attributes = array_change_key_case($attributes, CASE_UPPER); + + $sql .= "\n\t".$this->db->_protect_identifiers($field); + + $sql .= ' '.$attributes['TYPE']; + + if (array_key_exists('CONSTRAINT', $attributes)) + { + $sql .= '('.$attributes['CONSTRAINT'].')'; + } + + if (array_key_exists('UNSIGNED', $attributes) && $attributes['UNSIGNED'] === TRUE) + { + $sql .= ' UNSIGNED'; + } + + if (array_key_exists('DEFAULT', $attributes)) + { + $sql .= ' DEFAULT \''.$attributes['DEFAULT'].'\''; + } + + if (array_key_exists('NULL', $attributes) && $attributes['NULL'] === TRUE) + { + $sql .= ' NULL'; + } + else + { + $sql .= ' NOT NULL'; + } + + if (array_key_exists('AUTO_INCREMENT', $attributes) && $attributes['AUTO_INCREMENT'] === TRUE) + { + $sql .= ' AUTO_INCREMENT'; + } + } + + // don't add a comma on the end of the last field + if (++$current_field_count < count($fields)) + { + $sql .= ','; + } + } + + if (count($primary_keys) > 0) + { + $primary_keys = $this->db->_protect_identifiers($primary_keys); + $sql .= ",\n\tPRIMARY KEY (" . implode(', ', $primary_keys) . ")"; + } + + if (is_array($keys) && count($keys) > 0) + { + foreach ($keys as $key) + { + if (is_array($key)) + { + $key = $this->db->_protect_identifiers($key); + } + else + { + $key = array($this->db->_protect_identifiers($key)); + } + + $sql .= ",\n\tFOREIGN KEY (" . implode(', ', $key) . ")"; + } + } + + $sql .= "\n)"; + + return $sql; + } + + // -------------------------------------------------------------------- + + /** + * Drop Table + * + * @access private + * @return bool + */ + function _drop_table($table) + { + // Not a supported PDO feature + if ($this->db->db_debug) + { + return $this->db->display_error('db_unsuported_feature'); + } + return FALSE; + } + + // -------------------------------------------------------------------- + + /** + * Alter table query + * + * Generates a platform-specific query so that a table can be altered + * Called by add_column(), drop_column(), and column_alter(), + * + * @access private + * @param string the ALTER type (ADD, DROP, CHANGE) + * @param string the column name + * @param string the table name + * @param string the column definition + * @param string the default value + * @param boolean should 'NOT NULL' be added + * @param string the field after which we should add the new field + * @return object + */ + function _alter_table($alter_type, $table, $column_name, $column_definition = '', $default_value = '', $null = '', $after_field = '') + { + $sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table)." $alter_type ".$this->db->_protect_identifiers($column_name); + + // DROP has everything it needs now. + if ($alter_type == 'DROP') + { + return $sql; + } + + $sql .= " $column_definition"; + + if ($default_value != '') + { + $sql .= " DEFAULT \"$default_value\""; + } + + if ($null === NULL) + { + $sql .= ' NULL'; + } + else + { + $sql .= ' NOT NULL'; + } + + if ($after_field != '') + { + $sql .= ' AFTER ' . $this->db->_protect_identifiers($after_field); + } + + return $sql; + + } + + + // -------------------------------------------------------------------- + + /** + * Rename a table + * + * Generates a platform-specific query so that a table can be renamed + * + * @access private + * @param string the old table name + * @param string the new table name + * @return string + */ + function _rename_table($table_name, $new_table_name) + { + $sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table_name)." RENAME TO ".$this->db->_protect_identifiers($new_table_name); + return $sql; + } + + +} + +/* End of file pdo_forge.php */ +/* Location: ./system/database/drivers/pdo/pdo_forge.php */
\ No newline at end of file diff --git a/system/database/drivers/pdo/pdo_result.php b/system/database/drivers/pdo/pdo_result.php new file mode 100644 index 000000000..e3ae0da4b --- /dev/null +++ b/system/database/drivers/pdo/pdo_result.php @@ -0,0 +1,171 @@ +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +/** + * CodeIgniter + * + * An open source application development framework for PHP 5.1.6 or newer + * + * @package CodeIgniter + * @author ExpressionEngine Dev Team + * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. + * @license http://codeigniter.com/user_guide/license.html + * @link http://codeigniter.com + * @since Version 2.1.0 + * @filesource + */ + +// ------------------------------------------------------------------------ + +/** + * PDO Result Class + * + * This class extends the parent result class: CI_DB_result + * + * @category Database + * @author ExpressionEngine Dev Team + * @link http://codeigniter.com/user_guide/database/ + */ +class CI_DB_pdo_result extends CI_DB_result { + + /** + * Number of rows in the result set + * + * @access public + * @return integer + */ + function num_rows() + { + return $this->result_id->rowCount(); + } + + // -------------------------------------------------------------------- + + /** + * Number of fields in the result set + * + * @access public + * @return integer + */ + function num_fields() + { + return $this->result_id->columnCount(); + } + + // -------------------------------------------------------------------- + + /** + * Fetch Field Names + * + * Generates an array of column names + * + * @access public + * @return array + */ + function list_fields() + { + if ($this->db->db_debug) + { + return $this->db->display_error('db_unsuported_feature'); + } + return FALSE; + } + + // -------------------------------------------------------------------- + + /** + * Field data + * + * Generates an array of objects containing field meta-data + * + * @access public + * @return array + */ + function field_data() + { + $data = array(); + + try + { + for($i = 0; $i < $this->num_fields(); $i++) + { + $data[] = $this->result_id->getColumnMeta($i); + } + + return $data; + } + catch (Exception $e) + { + if ($this->db->db_debug) + { + return $this->db->display_error('db_unsuported_feature'); + } + return FALSE; + } + } + + // -------------------------------------------------------------------- + + /** + * Free the result + * + * @return null + */ + function free_result() + { + if (is_object($this->result_id)) + { + $this->result_id = FALSE; + } + } + + // -------------------------------------------------------------------- + + /** + * Data Seek + * + * Moves the internal pointer to the desired offset. We call + * this internally before fetching results to make sure the + * result set starts at zero + * + * @access private + * @return array + */ + function _data_seek($n = 0) + { + return FALSE; + } + + // -------------------------------------------------------------------- + + /** + * Result - associative array + * + * Returns the result set as an array + * + * @access private + * @return array + */ + function _fetch_assoc() + { + return $this->result_id->fetch(PDO::FETCH_ASSOC); + } + + // -------------------------------------------------------------------- + + /** + * Result - object + * + * Returns the result set as an object + * + * @access private + * @return object + */ + function _fetch_object() + { + return $this->result_id->fetchObject(); + } + +} + + +/* End of file pdo_result.php */ +/* Location: ./system/database/drivers/pdo/pdo_result.php */
\ No newline at end of file diff --git a/system/database/drivers/pdo/pdo_utility.php b/system/database/drivers/pdo/pdo_utility.php new file mode 100644 index 000000000..50b9746de --- /dev/null +++ b/system/database/drivers/pdo/pdo_utility.php @@ -0,0 +1,103 @@ +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +/** + * CodeIgniter + * + * An open source application development framework for PHP 5.1.6 or newer + * + * @package CodeIgniter + * @author ExpressionEngine Dev Team + * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. + * @license http://codeigniter.com/user_guide/license.html + * @link http://codeigniter.com + * @since Version 2.1.0 + * @filesource + */ + +// ------------------------------------------------------------------------ + +/** + * PDO Utility Class + * + * @category Database + * @author ExpressionEngine Dev Team + * @link http://codeigniter.com/database/ + */ +class CI_DB_pdo_utility extends CI_DB_utility { + + /** + * List databases + * + * @access private + * @return bool + */ + function _list_databases() + { + // Not sure if PDO lets you list all databases... + if ($this->db->db_debug) + { + return $this->db->display_error('db_unsuported_feature'); + } + return FALSE; + } + + // -------------------------------------------------------------------- + + /** + * Optimize table query + * + * Generates a platform-specific query so that a table can be optimized + * + * @access private + * @param string the table name + * @return object + */ + function _optimize_table($table) + { + // Not a supported PDO feature + if ($this->db->db_debug) + { + return $this->db->display_error('db_unsuported_feature'); + } + return FALSE; + } + + // -------------------------------------------------------------------- + + /** + * Repair table query + * + * Generates a platform-specific query so that a table can be repaired + * + * @access private + * @param string the table name + * @return object + */ + function _repair_table($table) + { + // Not a supported PDO feature + if ($this->db->db_debug) + { + return $this->db->display_error('db_unsuported_feature'); + } + return FALSE; + } + + // -------------------------------------------------------------------- + + /** + * PDO Export + * + * @access private + * @param array Preferences + * @return mixed + */ + function _backup($params = array()) + { + // Currently unsupported + return $this->db->display_error('db_unsuported_feature'); + } + +} + +/* End of file pdo_utility.php */ +/* Location: ./system/database/drivers/pdo/pdo_utility.php */
\ No newline at end of file |