diff options
Diffstat (limited to 'system/database/drivers/cubrid/cubrid_driver.php')
| -rw-r--r-- | system/database/drivers/cubrid/cubrid_driver.php | 259 |
1 files changed, 117 insertions, 142 deletions
diff --git a/system/database/drivers/cubrid/cubrid_driver.php b/system/database/drivers/cubrid/cubrid_driver.php index 7a5c048f9..21994b093 100644 --- a/system/database/drivers/cubrid/cubrid_driver.php +++ b/system/database/drivers/cubrid/cubrid_driver.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php /** * CodeIgniter * @@ -21,15 +21,16 @@ * @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 2.0.2 + * @since Version 2.1 * @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 @@ -40,26 +41,44 @@ */ class CI_DB_cubrid_driver extends CI_DB { + /** + * Database driver + * + * @var string + */ public $dbdriver = 'cubrid'; - // The character used for escaping - no need in CUBRID - protected $_escape_char = ''; + /** + * Auto-commit flag + * + * @var bool + */ + public $auto_commit = TRUE; - // clause and character used for LIKE escape sequences - not used in CUBRID - protected $_like_escape_str = ''; - protected $_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. + * Identifier escape character + * + * @var string */ - protected $_count_string = 'SELECT COUNT(*) AS '; - protected $_random_keyword = ' RAND()'; // database specific random keyword + protected $_escape_char = '`'; - // CUBRID-specific properties - public $auto_commit = TRUE; + /** + * ORDER BY random keyword + * + * @var array + */ + protected $_random_keyword = array('RANDOM()', 'RANDOM(%d)'); + + // -------------------------------------------------------------------- + /** + * Class constructor + * + * @param array $params + * @return void + */ public function __construct($params) { parent::__construct($params); @@ -74,10 +93,12 @@ class CI_DB_cubrid_driver extends CI_DB { else { // If no port is defined by the user, use the default value - $this->port == '' OR $this->port = 33000; + empty($this->port) OR $this->port = 33000; } } + // -------------------------------------------------------------------- + /** * Non-persistent database connection * @@ -115,7 +136,7 @@ class CI_DB_cubrid_driver extends CI_DB { * Except for determining if a persistent connection should be used, * the rest of the logic is the same for db_connect() and db_pconnect(). * - * @param bool + * @param bool $persistent * @return resource */ protected function _cubrid_connect($persistent = FALSE) @@ -165,9 +186,18 @@ class CI_DB_cubrid_driver extends CI_DB { */ public function version() { - return isset($this->data_cache['version']) - ? $this->data_cache['version'] - : $this->data_cache['version'] = cubrid_get_server_info($this->conn_id); + if (isset($this->data_cache['version'])) + { + return $this->data_cache['version']; + } + elseif ( ! $this->conn_id) + { + $this->initialize(); + } + + return ( ! $this->conn_id OR ($version = cubrid_get_server_info($this->conn_id)) === FALSE) + ? FALSE + : $this->data_cache['version'] = $version; } // -------------------------------------------------------------------- @@ -175,7 +205,7 @@ class CI_DB_cubrid_driver extends CI_DB { /** * Execute the query * - * @param string an SQL query + * @param string $sql an SQL query * @return resource */ protected function _execute($sql) @@ -188,17 +218,13 @@ class CI_DB_cubrid_driver extends CI_DB { /** * Begin Transaction * + * @param bool $test_mode * @return bool */ public function trans_begin($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) + if ( ! $this->trans_enabled OR $this->_trans_depth > 0) { return TRUE; } @@ -206,7 +232,7 @@ class CI_DB_cubrid_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; + $this->_trans_failure = ($test_mode === TRUE); if (cubrid_get_autocommit($this->conn_id)) { @@ -225,13 +251,8 @@ class CI_DB_cubrid_driver extends CI_DB { */ public 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) + if ( ! $this->trans_enabled OR $this->_trans_depth > 0) { return TRUE; } @@ -255,13 +276,8 @@ class CI_DB_cubrid_driver extends CI_DB { */ public 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 ( ! $this->trans_enabled OR $this->_trans_depth > 0) { return TRUE; } @@ -281,8 +297,8 @@ class CI_DB_cubrid_driver extends CI_DB { /** * Escape String * - * @param string - * @param bool whether or not the string will be used in a LIKE condition + * @param string $str + * @param bool $like Whether or not the string will be used in a LIKE condition * @return string */ public function escape_str($str, $like = FALSE) @@ -297,7 +313,9 @@ class CI_DB_cubrid_driver extends CI_DB { return $str; } - if (function_exists('cubrid_real_escape_string') AND is_resource($this->conn_id)) + if (function_exists('cubrid_real_escape_string') && + (is_resource($this->conn_id) + OR (get_resource_type($this->conn_id) === 'Unknown' && preg_match('/Resource id #/', strval($this->conn_id))))) { $str = cubrid_real_escape_string($str, $this->conn_id); } @@ -309,7 +327,7 @@ class CI_DB_cubrid_driver extends CI_DB { // escape LIKE condition wildcards if ($like === TRUE) { - $str = str_replace(array('%', '_'), array('\\%', '\\_'), $str); + return str_replace(array('%', '_'), array('\\%', '\\_'), $str); } return $str; @@ -342,49 +360,20 @@ class CI_DB_cubrid_driver extends CI_DB { // -------------------------------------------------------------------- /** - * "Count All" query - * - * Generates a platform-specific query string that counts all records in - * the specified table - * - * @param string - * @return int - */ - public function count_all($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; - } - - // -------------------------------------------------------------------- - - /** * List table query * * Generates a platform-specific query string so that the table names can be fetched * - * @param bool + * @param bool $prefix_limit * @return string */ protected function _list_tables($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; @@ -397,7 +386,7 @@ class CI_DB_cubrid_driver extends CI_DB { * * Generates a platform-specific query string so that the column names can be fetched * - * @param string the table name + * @param string $table * @return string */ protected function _list_columns($table = '') @@ -408,16 +397,40 @@ class CI_DB_cubrid_driver extends CI_DB { // -------------------------------------------------------------------- /** - * Field data query - * - * Generates a platform-specific query so that the column data can be retrieved + * Returns an object with field data * - * @param string the table name - * @return string + * @param string $table + * @return array */ - protected function _field_data($table) + public function field_data($table = '') { - return "SELECT * FROM ".$table." LIMIT 1"; + if ($table === '') + { + return ($this->db_debug) ? $this->display_error('db_field_param_missing') : FALSE; + } + + if (($query = $this->query('SHOW COLUMNS FROM '.$this->protect_identifiers($table, TRUE, NULL, FALSE))) === FALSE) + { + return FALSE; + } + $query = $query->result_object(); + + $retval = array(); + for ($i = 0, $c = count($query); $i < $c; $i++) + { + $retval[$i] = new stdClass(); + $retval[$i]->name = $query[$i]->Field; + + sscanf($query[$i]->Type, '%[a-z](%d)', + $retval[$i]->type, + $retval[$i]->max_length + ); + + $retval[$i]->default = $query[$i]->Default; + $retval[$i]->primary_key = (int) ($query[$i]->Key === 'PRI'); + } + + return $retval; } // -------------------------------------------------------------------- @@ -438,99 +451,62 @@ class CI_DB_cubrid_driver extends CI_DB { // -------------------------------------------------------------------- /** - * From Tables - * - * This function implicitly groups FROM tables so there is no confusion - * about operator precedence in harmony with SQL standards - * - * @param array - * @return string - */ - protected function _from_tables($tables) - { - if ( ! is_array($tables)) - { - $tables = array($tables); - } - - return '('.implode(', ', $tables).')'; - } - - // -------------------------------------------------------------------- - - /** * Update_Batch statement * * Generates a platform-specific batch update string from the supplied data * - * @param string the table name - * @param array the update data - * @param array the where clause + * @param string $table Table name + * @param array $values Update data + * @param string $index WHERE key * @return string */ - protected function _update_batch($table, $values, $index, $where = NULL) + protected function _update_batch($table, $values, $index) { $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 != $index) + if ($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, '; + $cases .= $k." = CASE \n" + .implode("\n", $v) + .'ELSE '.$k.' END, '; } - $sql .= substr($cases, 0, -2); + $this->where($index.' IN('.implode(',', $ids).')', NULL, FALSE); - $sql .= ' WHERE '.$where.$index.' IN ('.implode(',', $ids).')'; - - return $sql; + return 'UPDATE '.$table.' SET '.substr($cases, 0, -2).$this->_compile_wh('qb_where'); } // -------------------------------------------------------------------- /** - * Limit string + * FROM tables * - * Generates a platform-specific LIMIT clause + * Groups tables in FROM clauses if needed, so there is no confusion + * about operator precedence. * - * @param string the sql query string - * @param int the number of rows to limit the query to - * @param int the offset value * @return string */ - protected function _limit($sql, $limit, $offset) + protected function _from_tables() { - if ($offset == 0) - { - $offset = ''; - } - else + if ( ! empty($this->qb_join) && count($this->qb_from) > 1) { - $offset .= ", "; + return '('.implode(', ', $this->qb_from).')'; } - return $sql."LIMIT ".$offset.$limit; + return implode(', ', $this->qb_from); } // -------------------------------------------------------------------- @@ -538,12 +514,11 @@ class CI_DB_cubrid_driver extends CI_DB { /** * Close DB Connection * - * @param resource * @return void */ - protected function _close($conn_id) + protected function _close() { - @cubrid_close($conn_id); + @cubrid_close($this->conn_id); } } |