diff options
Diffstat (limited to 'system/database/drivers/pdo/pdo_driver.php')
| -rw-r--r-- | system/database/drivers/pdo/pdo_driver.php | 295 |
1 files changed, 228 insertions, 67 deletions
diff --git a/system/database/drivers/pdo/pdo_driver.php b/system/database/drivers/pdo/pdo_driver.php index 19e069b06..de2b0abeb 100644 --- a/system/database/drivers/pdo/pdo_driver.php +++ b/system/database/drivers/pdo/pdo_driver.php @@ -4,10 +4,22 @@ * * An open source application development framework for PHP 5.1.6 or newer * + * NOTICE OF LICENSE + * + * Licensed under the Open Software License version 3.0 + * + * This source file is subject to the Open Software License (OSL 3.0) that is + * bundled with this package in the files license.txt / license.rst. It is + * also available through the world wide web at this URL: + * http://opensource.org/licenses/OSL-3.0 + * If you did not receive a copy of the license and are unable to obtain it + * through the world wide web, please send an email to + * licensing@ellislab.com so we can send you a copy immediately. + * * @package CodeIgniter - * @author ExpressionEngine Dev Team - * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. - * @license http://codeigniter.com/user_guide/license.html + * @author EllisLab Dev Team + * @copyright Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/) + * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 2.1.0 * @filesource @@ -25,7 +37,7 @@ * @package CodeIgniter * @subpackage Drivers * @category Database - * @author ExpressionEngine Dev Team + * @author EllisLab Dev Team * @link http://codeigniter.com/user_guide/database/ */ class CI_DB_pdo_driver extends CI_DB { @@ -34,9 +46,10 @@ class CI_DB_pdo_driver extends CI_DB { // the character used to excape - not necessary for PDO var $_escape_char = ''; + + // clause and character used for LIKE escape sequences var $_like_escape_str; var $_like_escape_chr; - /** * The syntax to count rows is slightly different across different @@ -46,18 +59,35 @@ class CI_DB_pdo_driver extends CI_DB { var $_count_string = "SELECT COUNT(*) AS "; var $_random_keyword; + // need to track the pdo DSN, driver and options + var $dsn; + var $pdodriver; + var $options = array(); function __construct($params) { parent::__construct($params); - + + if (preg_match('/([^;]+):/', $this->dsn, $match) && count($match) == 2) + { + // If there is a minimum valid dsn string pattern found, we're done + // This is for general PDO users, who tend to have a full DSN string. + $this->pdodriver = end($match); + } + else + { + // Try to build a complete DSN string from params + $this->_connect_string($params); + } + // clause and character used for LIKE escape sequences - if (strpos($this->hostname, 'mysql') !== FALSE) + // this one depends on the driver being used + if ($this->pdodriver == 'mysql') { $this->_like_escape_str = ''; $this->_like_escape_chr = ''; } - else if (strpos($this->hostname, 'odbc') !== FALSE) + elseif ($this->pdodriver == 'odbc') { $this->_like_escape_str = " {escape '%s'} "; $this->_like_escape_chr = '!'; @@ -68,13 +98,97 @@ class CI_DB_pdo_driver extends CI_DB { $this->_like_escape_chr = '!'; } - $this->hostname = $this->hostname . ";dbname=".$this->database; - $this->trans_enabled = FALSE; - + $this->trans_enabled = FALSE; $this->_random_keyword = ' RND('.time().')'; // database specific random keyword } /** + * Connection String + * + * @access private + * @param array + * @return void + */ + function _connect_string($params) + { + if (strpos($this->hostname, ':')) + { + // hostname generally would have this prototype + // $db['hostname'] = 'pdodriver:host(/Server(/DSN))=hostname(/DSN);'; + // We need to get the prefix (pdodriver used by PDO). + $dsnarray = explode(':', $this->hostname); + $this->pdodriver = $dsnarray[0]; + + // End dsn with a semicolon for extra backward compability + // if database property was not empty. + if ( ! empty($this->database)) + { + $this->dsn .= rtrim($this->hostname, ';').';'; + } + } + else + { + // Invalid DSN, display an error + if ( ! array_key_exists('pdodriver', $params)) + { + show_error('Invalid DB Connection String for PDO'); + } + + // Assuming that the following DSN string format is used: + // $dsn = 'pdo://username:password@hostname:port/database?pdodriver=pgsql'; + $this->dsn = $this->pdodriver.':'; + + // Add hostname to the DSN for databases that need it + if ( ! empty($this->hostname) + && strpos($this->hostname, ':') === FALSE + && in_array($this->pdodriver, array('informix', 'mysql', 'pgsql', 'sybase', 'mssql', 'dblib', 'cubrid'))) + { + $this->dsn .= 'host='.$this->hostname.';'; + } + + // Add a port to the DSN for databases that can use it + if ( ! empty($this->port) && in_array($this->pdodriver, array('informix', 'mysql', 'pgsql', 'ibm', 'cubrid'))) + { + $this->dsn .= 'port='.$this->port.';'; + } + } + + // Add the database name to the DSN, if needed + if (stripos($this->dsn, 'dbname') === FALSE + && in_array($this->pdodriver, array('4D', 'pgsql', 'mysql', 'firebird', 'sybase', 'mssql', 'dblib', 'cubrid'))) + { + $this->dsn .= 'dbname='.$this->database.';'; + } + elseif (stripos($this->dsn, 'database') === FALSE && in_array($this->pdodriver, array('ibm', 'sqlsrv'))) + { + if (stripos($this->dsn, 'dsn') === FALSE) + { + $this->dsn .= 'database='.$this->database.';'; + } + } + elseif ($this->pdodriver === 'sqlite' && $this->dsn === 'sqlite:') + { + if ($this->database !== ':memory') + { + if ( ! file_exists($this->database)) + { + show_error('Invalid DB Connection string for PDO SQLite'); + } + + $this->dsn .= (strpos($this->database, DIRECTORY_SEPARATOR) !== 0) ? DIRECTORY_SEPARATOR : ''; + } + + $this->dsn .= $this->database; + } + + // Add charset to the DSN, if needed + if ( ! empty($this->char_set) && in_array($this->pdodriver, array('4D', 'mysql', 'sybase', 'mssql', 'dblib', 'oci'))) + { + $this->dsn .= 'charset='.$this->char_set.';'; + } + } + + /** * Non-persistent database connection * * @access private called by the base class @@ -82,9 +196,9 @@ class CI_DB_pdo_driver extends CI_DB { */ function db_connect() { - return new PDO($this->hostname,$this->username,$this->password, array( - PDO::ATTR_ERRMODE => PDO::ERRMODE_SILENT - )); + $this->options[PDO::ATTR_ERRMODE] = PDO::ERRMODE_SILENT; + + return $this->pdo_connect(); } // -------------------------------------------------------------------- @@ -97,10 +211,44 @@ class CI_DB_pdo_driver extends CI_DB { */ function db_pconnect() { - return new PDO($this->hostname,$this->username,$this->password, array( - PDO::ATTR_ERRMODE => PDO::ERRMODE_SILENT, - PDO::ATTR_PERSISTENT => true - )); + $this->options[PDO::ATTR_ERRMODE] = PDO::ERRMODE_SILENT; + $this->options[PDO::ATTR_PERSISTENT] = TRUE; + + return $this->pdo_connect(); + } + + // -------------------------------------------------------------------- + + /** + * PDO connection + * + * @access private called by the PDO driver class + * @return resource + */ + function pdo_connect() + { + // Refer : http://php.net/manual/en/ref.pdo-mysql.connection.php + if ($this->pdodriver == 'mysql' && is_php('5.3.6')) + { + $this->options[PDO::MYSQL_ATTR_INIT_COMMAND] = "SET NAMES $this->char_set COLLATE '$this->dbcollat'"; + } + + // Connecting... + try + { + $db = new PDO($this->dsn, $this->username, $this->password, $this->options); + } + catch (PDOException $e) + { + if ($this->db_debug && empty($this->failover)) + { + $this->display_error($e->getMessage(), '', TRUE); + } + + return FALSE; + } + + return $db; } // -------------------------------------------------------------------- @@ -120,6 +268,7 @@ class CI_DB_pdo_driver extends CI_DB { { return $this->db->display_error('db_unsuported_feature'); } + return FALSE; } @@ -149,7 +298,6 @@ class CI_DB_pdo_driver extends CI_DB { */ function db_set_charset($charset, $collation) { - // @todo - add support if needed return TRUE; } @@ -178,6 +326,7 @@ class CI_DB_pdo_driver extends CI_DB { function _execute($sql) { $sql = $this->_prep_query($sql); + $result_id = $this->conn_id->query($sql); if (is_object($result_id)) @@ -205,6 +354,17 @@ class CI_DB_pdo_driver extends CI_DB { */ function _prep_query($sql) { + if ($this->pdodriver === 'pgsql') + { + // Change the backtick(s) for Postgre + $sql = str_replace('`', '"', $sql); + } + elseif ($this->pdodriver === 'sqlite') + { + // Change the backtick(s) for SQLite + $sql = str_replace('`', '', $sql); + } + return $sql; } @@ -232,7 +392,7 @@ class CI_DB_pdo_driver extends CI_DB { // 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; + $this->_trans_failure = (bool) ($test_mode === TRUE); return $this->conn_id->beginTransaction(); } @@ -259,6 +419,7 @@ class CI_DB_pdo_driver extends CI_DB { } $ret = $this->conn->commit(); + return $ret; } @@ -284,6 +445,7 @@ class CI_DB_pdo_driver extends CI_DB { } $ret = $this->conn_id->rollBack(); + return $ret; } @@ -322,7 +484,9 @@ class CI_DB_pdo_driver extends CI_DB { if ($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), + array($this->_like_escape_chr.'%', + $this->_like_escape_chr.'_', + $this->_like_escape_chr.$this->_like_escape_chr), $str); } @@ -352,9 +516,9 @@ class CI_DB_pdo_driver extends CI_DB { */ function insert_id($name=NULL) { - //Convenience method for postgres insertid - if (strpos($this->hostname, 'pgsql') !== FALSE) + if ($this->pdodriver == 'pgsql') { + //Convenience method for postgres insertid $v = $this->_version(); $table = func_num_args() > 0 ? func_get_arg(0) : NULL; @@ -363,8 +527,10 @@ class CI_DB_pdo_driver extends CI_DB { { $sql='SELECT LASTVAL() as ins_id'; } + $query = $this->query($sql); - $row = $query->row(); + $row = $query->row(); + return $row->ins_id; } else @@ -392,7 +558,9 @@ class CI_DB_pdo_driver extends CI_DB { return 0; } - $query = $this->query($this->_count_string . $this->_protect_identifiers('numrows') . " FROM " . $this->_protect_identifiers($table, TRUE, NULL, FALSE)); + $sql = $this->_count_string.$this->_protect_identifiers('numrows').' FROM '; + $sql .= $this->_protect_identifiers($table, TRUE, NULL, FALSE); + $query = $this->query($sql); if ($query->num_rows() == 0) { @@ -401,6 +569,7 @@ class CI_DB_pdo_driver extends CI_DB { $row = $query->row(); $this->_reset_select(); + return (int) $row->numrows; } @@ -417,12 +586,19 @@ class CI_DB_pdo_driver extends CI_DB { */ function _list_tables($prefix_limit = FALSE) { - $sql = "SHOW TABLES FROM `".$this->database."`"; + if ($this->pdodriver == 'pgsql') + { + // Analog function to show all tables in postgre + $sql = "SELECT * FROM information_schema.tables WHERE table_schema = 'public'"; + } + else + { + $sql = "SHOW TABLES FROM `".$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 FALSE; } return $sql; @@ -441,7 +617,7 @@ class CI_DB_pdo_driver extends CI_DB { */ function _list_columns($table = '') { - return "SHOW COLUMNS FROM ".$table; + return 'SHOW COLUMNS FROM '.$this->_from_tables($table); } // -------------------------------------------------------------------- @@ -457,7 +633,7 @@ class CI_DB_pdo_driver extends CI_DB { */ function _field_data($table) { - return "SELECT TOP 1 FROM ".$table; + return 'SELECT TOP 1 FROM '.$this->_from_tables($table); } // -------------------------------------------------------------------- @@ -471,6 +647,7 @@ class CI_DB_pdo_driver extends CI_DB { function _error_message() { $error_array = $this->conn_id->errorInfo(); + return $error_array[2]; } @@ -518,8 +695,8 @@ class CI_DB_pdo_driver extends CI_DB { if (strpos($item, '.') !== FALSE) { - $str = $this->_escape_char.str_replace('.', $this->_escape_char.'.'.$this->_escape_char, $item).$this->_escape_char; - + $str = $this->_escape_char.str_replace('.', $this->_escape_char.'.'.$this->_escape_char, $item); + $str .= $this->_escape_char; } else { @@ -549,7 +726,7 @@ class CI_DB_pdo_driver extends CI_DB { $tables = array($tables); } - return (count($tables) == 1) ? $tables[0] : '('.implode(', ', $tables).')'; + return (count($tables) == 1) ? '`'.$tables[0].'`' : '('.implode(', ', $tables).')'; } // -------------------------------------------------------------------- @@ -567,7 +744,7 @@ class CI_DB_pdo_driver extends CI_DB { */ function _insert($table, $keys, $values) { - return "INSERT INTO ".$table." (".implode(', ', $keys).") VALUES (".implode(', ', $values).")"; + return 'INSERT INTO '.$this->_from_tables($table).' ('.implode(', ', $keys).') VALUES ('.implode(', ', $values).')'; } // -------------------------------------------------------------------- @@ -585,7 +762,7 @@ class CI_DB_pdo_driver extends CI_DB { */ function _insert_batch($table, $keys, $values) { - return "INSERT INTO ".$table." (".implode(', ', $keys).") VALUES ".implode(', ', $values); + return 'INSERT INTO '.$this->_from_tables($table).' ('.implode(', ', $keys).') VALUES '.implode(', ', $values); } // -------------------------------------------------------------------- @@ -610,14 +787,11 @@ class CI_DB_pdo_driver extends CI_DB { $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) : ''; + $limit = ( ! $limit) ? '' : ' LIMIT '.$limit; + $orderby = (count($orderby) >= 1) ? ' ORDER BY '.implode(', ', $orderby) : ''; + $sql = 'UPDATE '.$this->_from_tables($table).' SET '.implode(', ', $valstr); + $sql .= ($where != '' && count($where) >= 1) ? ' WHERE '.implode(' ', $where) : ''; $sql .= $orderby.$limit; return $sql; @@ -638,8 +812,8 @@ class CI_DB_pdo_driver extends CI_DB { */ function _update_batch($table, $values, $index, $where = NULL) { - $ids = array(); - $where = ($where != '' AND count($where) >=1) ? implode(" ", $where).' AND ' : ''; + $ids = array(); + $where = ($where != '' && count($where) >=1) ? implode(" ", $where).' AND ' : ''; foreach ($values as $key => $val) { @@ -654,12 +828,13 @@ class CI_DB_pdo_driver extends CI_DB { } } - $sql = "UPDATE ".$table." SET "; + $sql = 'UPDATE '.$this->_from_tables($table).' SET '; $cases = ''; foreach ($final as $k => $v) { $cases .= $k.' = CASE '."\n"; + foreach ($v as $row) { $cases .= $row."\n"; @@ -669,7 +844,6 @@ class CI_DB_pdo_driver extends CI_DB { } $sql .= substr($cases, 0, -2); - $sql .= ' WHERE '.$where.$index.' IN ('.implode(',', $ids).')'; return $sql; @@ -713,19 +887,20 @@ class CI_DB_pdo_driver extends CI_DB { if (count($where) > 0 OR count($like) > 0) { - $conditions = "\nWHERE "; + $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.$limit; + return 'DELETE FROM '.$this->_from_tables($table).$conditions.$limit; } // -------------------------------------------------------------------- @@ -743,27 +918,16 @@ class CI_DB_pdo_driver extends CI_DB { */ function _limit($sql, $limit, $offset) { - if (strpos($this->hostname, 'cubrid') !== FALSE || strpos($this->hostname, 'sqlite') !== FALSE) + if ($this->pdodriver == 'cubrid' OR $this->pdodriver == 'sqlite') { - if ($offset == 0) - { - $offset = ''; - } - else - { - $offset .= ", "; - } + $offset = ($offset == 0) ? '' : $offset.', '; - return $sql."LIMIT ".$offset.$limit; + return $sql.'LIMIT '.$offset.$limit; } else { - $sql .= "LIMIT ".$limit; - - if ($offset > 0) - { - $sql .= " OFFSET ".$offset; - } + $sql .= 'LIMIT '.$limit; + $sql .= ($offset > 0) ? ' OFFSET '.$offset : ''; return $sql; } @@ -783,10 +947,7 @@ class CI_DB_pdo_driver extends CI_DB { $this->conn_id = null; } - } - - /* End of file pdo_driver.php */ /* Location: ./system/database/drivers/pdo/pdo_driver.php */
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