diff options
Diffstat (limited to 'system/database/drivers/cubrid/cubrid_driver.php')
| -rw-r--r-- | system/database/drivers/cubrid/cubrid_driver.php | 713 |
1 files changed, 163 insertions, 550 deletions
diff --git a/system/database/drivers/cubrid/cubrid_driver.php b/system/database/drivers/cubrid/cubrid_driver.php index 13bafa3ed..6e8aff7c6 100644 --- a/system/database/drivers/cubrid/cubrid_driver.php +++ b/system/database/drivers/cubrid/cubrid_driver.php @@ -1,108 +1,135 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php /** * CodeIgniter * - * An open source application development framework for PHP 5.1.6 or newer + * An open source application development framework for PHP * - * @package CodeIgniter - * @author Esen Sagynov - * @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. - * @license http://codeigniter.com/user_guide/license.html - * @link http://codeigniter.com - * @since Version 2.0.2 + * This content is released under the MIT License (MIT) + * + * Copyright (c) 2014 - 2017, British Columbia Institute of Technology + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + * @package CodeIgniter + * @author EllisLab Dev Team + * @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/) + * @copyright Copyright (c) 2014 - 2017, British Columbia Institute of Technology (http://bcit.ca/) + * @license http://opensource.org/licenses/MIT MIT License + * @link https://codeigniter.com + * @since Version 2.1.0 * @filesource */ - -// ------------------------------------------------------------------------ +defined('BASEPATH') OR exit('No direct script access allowed'); /** * CUBRID Database Adapter Class * * Note: _DB is an extender class that the app controller - * creates dynamically based on whether the active record + * creates dynamically based on whether the query builder * class is being used or not. * * @package CodeIgniter * @subpackage Drivers * @category Database * @author Esen Sagynov - * @link http://codeigniter.com/user_guide/database/ + * @link https://codeigniter.com/user_guide/database/ */ class CI_DB_cubrid_driver extends CI_DB { - // Default CUBRID Broker port. Will be used unless user - // explicitly specifies another one. - const DEFAULT_PORT = 33000; + /** + * Database driver + * + * @var string + */ + public $dbdriver = 'cubrid'; - var $dbdriver = 'cubrid'; + /** + * Auto-commit flag + * + * @var bool + */ + public $auto_commit = TRUE; - // The character used for escaping - no need in CUBRID - var $_escape_char = ''; + // -------------------------------------------------------------------- - // clause and character used for LIKE escape sequences - not used in CUBRID - var $_like_escape_str = ''; - var $_like_escape_chr = ''; + /** + * Identifier escape character + * + * @var string + */ + protected $_escape_char = '`'; /** - * 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. + * ORDER BY random keyword + * + * @var array */ - var $_count_string = 'SELECT COUNT(*) AS '; - var $_random_keyword = ' RAND()'; // database specific random keyword + protected $_random_keyword = array('RANDOM()', 'RANDOM(%d)'); + + // -------------------------------------------------------------------- /** - * Non-persistent database connection + * Class constructor * - * @access private called by the base class - * @return resource + * @param array $params + * @return void */ - function db_connect() + public function __construct($params) { - // If no port is defined by the user, use the default value - if ($this->port == '') - { - $this->port = self::DEFAULT_PORT; - } + parent::__construct($params); - $conn = cubrid_connect($this->hostname, $this->port, $this->database, $this->username, $this->password); - - if ($conn) + if (preg_match('/^CUBRID:[^:]+(:[0-9][1-9]{0,4})?:[^:]+:[^:]*:[^:]*:(\?.+)?$/', $this->dsn, $matches)) { - // Check if a user wants to run queries in dry, i.e. run the - // queries but not commit them. - if (isset($this->auto_commit) && ! $this->auto_commit) - { - cubrid_set_autocommit($conn, CUBRID_AUTOCOMMIT_FALSE); - } - else + if (stripos($matches[2], 'autocommit=off') !== FALSE) { - cubrid_set_autocommit($conn, CUBRID_AUTOCOMMIT_TRUE); - $this->auto_commit = TRUE; + $this->auto_commit = FALSE; } } - - return $conn; + else + { + // If no port is defined by the user, use the default value + empty($this->port) OR $this->port = 33000; + } } // -------------------------------------------------------------------- /** - * Persistent database connection - * In CUBRID persistent DB connection is supported natively in CUBRID - * engine which can be configured in the CUBRID Broker configuration - * file by setting the CCI_PCONNECT parameter to ON. In that case, all - * connections established between the client application and the - * server will become persistent. This is calling the same - * @cubrid_connect function will establish persisten connection - * considering that the CCI_PCONNECT is ON. + * Non-persistent database connection * - * @access private called by the base class + * @param bool $persistent * @return resource */ - function db_pconnect() + public function db_connect($persistent = FALSE) { - return $this->db_connect(); + if (preg_match('/^CUBRID:[^:]+(:[0-9][1-9]{0,4})?:[^:]+:([^:]*):([^:]*):(\?.+)?$/', $this->dsn, $matches)) + { + $func = ($persistent !== TRUE) ? 'cubrid_connect_with_url' : 'cubrid_pconnect_with_url'; + return ($matches[2] === '' && $matches[3] === '' && $this->username !== '' && $this->password !== '') + ? $func($this->dsn, $this->username, $this->password) + : $func($this->dsn); + } + + $func = ($persistent !== TRUE) ? 'cubrid_connect' : 'cubrid_pconnect'; + return ($this->username !== '') + ? $func($this->hostname, $this->port, $this->database, $this->username, $this->password) + : $func($this->hostname, $this->port, $this->database); } // -------------------------------------------------------------------- @@ -113,10 +140,9 @@ class CI_DB_cubrid_driver extends CI_DB { * Keep / reestablish the db connection if no queries have been * sent for a length of time exceeding the server's idle timeout * - * @access public * @return void */ - function reconnect() + public function reconnect() { if (cubrid_ping($this->conn_id) === FALSE) { @@ -127,54 +153,20 @@ class CI_DB_cubrid_driver extends CI_DB { // -------------------------------------------------------------------- /** - * Select the database - * - * @access private called by the base class - * @return resource - */ - function db_select() - { - // In CUBRID there is no need to select a database as the database - // is chosen at the connection time. - // So, to determine if the database is "selected", all we have to - // do is ping the server and return that value. - return cubrid_ping($this->conn_id); - } - - // -------------------------------------------------------------------- - - /** - * Set client character set - * - * @access public - * @param string - * @param string - * @return resource - */ - function db_set_charset($charset, $collation) - { - // In CUBRID, there is no need to set charset or collation. - // This is why returning true will allow the application continue - // its normal process. - return TRUE; - } - - // -------------------------------------------------------------------- - - /** - * Version number query string + * Database version number * - * @access public * @return string */ - function _version() + public function version() { - // To obtain the CUBRID Server version, no need to run the SQL query. - // CUBRID PHP API provides a function to determin this value. - // This is why we also need to add 'cubrid' value to the list of - // $driver_version_exceptions array in DB_driver class in - // version() function. - return cubrid_get_server_info($this->conn_id); + if (isset($this->data_cache['version'])) + { + return $this->data_cache['version']; + } + + return ( ! $this->conn_id OR ($version = cubrid_get_server_info($this->conn_id)) === FALSE) + ? FALSE + : $this->data_cache['version'] = $version; } // -------------------------------------------------------------------- @@ -182,31 +174,12 @@ class CI_DB_cubrid_driver extends CI_DB { /** * Execute the query * - * @access private called by the base class - * @param string an SQL query + * @param string $sql an SQL query * @return resource */ - function _execute($sql) + protected function _execute($sql) { - $sql = $this->_prep_query($sql); - return @cubrid_query($sql, $this->conn_id); - } - - // -------------------------------------------------------------------- - - /** - * Prep the query - * - * If needed, each database adapter can prep the query string - * - * @access private called by execute() - * @param string an SQL query - * @return string - */ - function _prep_query($sql) - { - // No need to prepare - return $sql; + return cubrid_query($sql, $this->conn_id); } // -------------------------------------------------------------------- @@ -214,30 +187,17 @@ class CI_DB_cubrid_driver extends CI_DB { /** * Begin Transaction * - * @access public * @return bool */ - function trans_begin($test_mode = FALSE) + protected function _trans_begin() { - if ( ! $this->trans_enabled) + if (($autocommit = cubrid_get_autocommit($this->conn_id)) === NULL) { - return TRUE; + return FALSE; } - - // When transactions are nested we only begin/commit/rollback the outermost ones - if ($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; - - if (cubrid_get_autocommit($this->conn_id)) + elseif ($autocommit === TRUE) { - cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_FALSE); + return cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_FALSE); } return TRUE; @@ -248,27 +208,18 @@ class CI_DB_cubrid_driver extends CI_DB { /** * Commit Transaction * - * @access public * @return bool */ - function trans_commit() + protected function _trans_commit() { - if ( ! $this->trans_enabled) + if ( ! cubrid_commit($this->conn_id)) { - return TRUE; + return FALSE; } - // When transactions are nested we only begin/commit/rollback the outermost ones - if ($this->_trans_depth > 0) - { - return TRUE; - } - - cubrid_commit($this->conn_id); - if ($this->auto_commit && ! cubrid_get_autocommit($this->conn_id)) { - cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE); + return cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE); } return TRUE; @@ -279,24 +230,15 @@ class CI_DB_cubrid_driver extends CI_DB { /** * Rollback Transaction * - * @access public * @return bool */ - function trans_rollback() + protected 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) + if ( ! cubrid_rollback($this->conn_id)) { - return TRUE; + return FALSE; } - cubrid_rollback($this->conn_id); - if ($this->auto_commit && ! cubrid_get_autocommit($this->conn_id)) { cubrid_set_autocommit($this->conn_id, CUBRID_AUTOCOMMIT_TRUE); @@ -308,41 +250,14 @@ class CI_DB_cubrid_driver extends CI_DB { // -------------------------------------------------------------------- /** - * Escape String + * Platform-dependent string escape * - * @access public * @param string - * @param bool whether or not the string will be used in a LIKE condition * @return string */ - function escape_str($str, $like = FALSE) + protected function _escape_str($str) { - if (is_array($str)) - { - foreach ($str as $key => $val) - { - $str[$key] = $this->escape_str($val, $like); - } - - return $str; - } - - if (function_exists('cubrid_real_escape_string') AND is_resource($this->conn_id)) - { - $str = cubrid_real_escape_string($str, $this->conn_id); - } - else - { - $str = addslashes($str); - } - - // escape LIKE condition wildcards - if ($like === TRUE) - { - $str = str_replace(array('%', '_'), array('\\%', '\\_'), $str); - } - - return $str; + return cubrid_real_escape_string($str, $this->conn_id); } // -------------------------------------------------------------------- @@ -350,12 +265,11 @@ class CI_DB_cubrid_driver extends CI_DB { /** * Affected Rows * - * @access public - * @return integer + * @return int */ - function affected_rows() + public function affected_rows() { - return @cubrid_affected_rows($this->conn_id); + return cubrid_affected_rows(); } // -------------------------------------------------------------------- @@ -363,43 +277,11 @@ class CI_DB_cubrid_driver extends CI_DB { /** * Insert ID * - * @access public - * @return integer + * @return int */ - function insert_id() + public function insert_id() { - return @cubrid_insert_id($this->conn_id); - } - - // -------------------------------------------------------------------- - - /** - * "Count All" query - * - * Generates a platform-specific query string that counts all records in - * the specified table - * - * @access public - * @param string - * @return string - */ - function count_all($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) $row->numrows; + return cubrid_insert_id($this->conn_id); } // -------------------------------------------------------------------- @@ -409,17 +291,16 @@ class CI_DB_cubrid_driver extends CI_DB { * * Generates a platform-specific query string so that the table names can be fetched * - * @access private - * @param boolean + * @param bool $prefix_limit * @return string */ - function _list_tables($prefix_limit = FALSE) + protected function _list_tables($prefix_limit = FALSE) { - $sql = "SHOW TABLES"; + $sql = 'SHOW TABLES'; - if ($prefix_limit !== FALSE AND $this->dbprefix != '') + if ($prefix_limit !== FALSE && $this->dbprefix !== '') { - $sql .= " LIKE '".$this->escape_like_str($this->dbprefix)."%'"; + return $sql." LIKE '".$this->escape_like_str($this->dbprefix)."%'"; } return $sql; @@ -432,343 +313,81 @@ class CI_DB_cubrid_driver extends CI_DB { * * Generates a platform-specific query string so that the column names can be fetched * - * @access public - * @param string the table name - * @return string - */ - function _list_columns($table = '') - { - return "SHOW COLUMNS FROM ".$this->_protect_identifiers($table, TRUE, NULL, FALSE); - } - - // -------------------------------------------------------------------- - - /** - * 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($table) - { - return "SELECT * FROM ".$table." LIMIT 1"; - } - - // -------------------------------------------------------------------- - - /** - * The error message string - * - * @access private + * @param string $table * @return string */ - function _error_message() + protected function _list_columns($table = '') { - return cubrid_error($this->conn_id); + return 'SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE); } // -------------------------------------------------------------------- /** - * The error message number + * Returns an object with field data * - * @access private - * @return integer + * @param string $table + * @return array */ - function _error_number() + public function field_data($table) { - return cubrid_errno($this->conn_id); - } - - // -------------------------------------------------------------------- - - /** - * Escape the SQL Identifiers - * - * This function escapes column and table names - * - * @access private - * @param string - * @return string - */ - function _escape_identifiers($item) - { - if ($this->_escape_char == '') - { - return $item; - } - - foreach ($this->_reserved_identifiers as $id) + if (($query = $this->query('SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE))) === FALSE) { - if (strpos($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); - } + return FALSE; } + $query = $query->result_object(); - if (strpos($item, '.') !== FALSE) + $retval = array(); + for ($i = 0, $c = count($query); $i < $c; $i++) { - $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; - } + $retval[$i] = new stdClass(); + $retval[$i]->name = $query[$i]->Field; - // remove duplicates if the user already included the escape - return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str); - } - - // -------------------------------------------------------------------- + sscanf($query[$i]->Type, '%[a-z](%d)', + $retval[$i]->type, + $retval[$i]->max_length + ); - /** - * 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); + $retval[$i]->default = $query[$i]->Default; + $retval[$i]->primary_key = (int) ($query[$i]->Key === 'PRI'); } - return '('.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(', ', $values).")"; - } - - // -------------------------------------------------------------------- - - - /** - * Replace statement - * - * Generates a platform-specific replace string from the supplied data - * - * @access public - * @param string the table name - * @param array the insert keys - * @param array the insert values - * @return string - */ - function _replace($table, $keys, $values) - { - return "REPLACE INTO ".$table." (\"".implode('", "', $keys)."\") VALUES (".implode(', ', $values).")"; + return $retval; } // -------------------------------------------------------------------- /** - * Insert_batch statement + * Error * - * Generates a platform-specific insert string from the supplied data + * Returns an array containing code and message of the last + * database error that has occurred. * - * @access public - * @param string the table name - * @param array the insert keys - * @param array the insert values - * @return string + * @return array */ - function _insert_batch($table, $keys, $values) + public function error() { - return "INSERT INTO ".$table." (\"".implode('", "', $keys)."\") VALUES ".implode(', ', $values); + return array('code' => cubrid_errno($this->conn_id), 'message' => cubrid_error($this->conn_id)); } // -------------------------------------------------------------------- - /** - * Update statement + * FROM tables * - * Generates a platform-specific update string from the supplied data + * Groups tables in FROM clauses if needed, so there is no confusion + * about operator precedence. * - * @access public - * @param string the table name - * @param array the update data - * @param array the where clause - * @param array the orderby clause - * @param array the limit clause * @return string */ - function _update($table, $values, $where, $orderby = array(), $limit = FALSE) + protected function _from_tables() { - foreach ($values as $key => $val) + if ( ! empty($this->qb_join) && count($this->qb_from) > 1) { - $valstr[] = sprintf('"%s" = %s', $key, $val); + return '('.implode(', ', $this->qb_from).')'; } - $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 "TRUNCATE ".$table; - } - - // -------------------------------------------------------------------- - - /** - * Delete statement - * - * Generates a platform-specific delete string from the supplied data - * - * @access public - * @param string the table name - * @param array the where clause - * @param string the limit clause - * @return string - */ - function _delete($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, $offset) - { - if ($offset == 0) - { - $offset = ''; - } - else - { - $offset .= ", "; - } - - return $sql."LIMIT ".$offset.$limit; + return implode(', ', $this->qb_from); } // -------------------------------------------------------------------- @@ -776,17 +395,11 @@ class CI_DB_cubrid_driver extends CI_DB { /** * Close DB Connection * - * @access public - * @param resource * @return void */ - function _close($conn_id) + protected function _close() { - @cubrid_close($conn_id); + cubrid_close($this->conn_id); } } - - -/* End of file cubrid_driver.php */ -/* Location: ./system/database/drivers/cubrid/cubrid_driver.php */
\ No newline at end of file |