diff options
Diffstat (limited to 'system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php')
| -rw-r--r-- | system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php | 115 |
1 files changed, 49 insertions, 66 deletions
diff --git a/system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php b/system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php index 392754ff7..f6e0e215a 100644 --- a/system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php +++ b/system/database/drivers/pdo/subdrivers/pdo_odbc_driver.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php /** * CodeIgniter * @@ -24,6 +24,7 @@ * @since Version 3.0.0 * @filesource */ +defined('BASEPATH') OR exit('No direct script access allowed'); /** * PDO ODBC Database Adapter Class @@ -40,23 +41,46 @@ */ class CI_DB_pdo_odbc_driver extends CI_DB_pdo_driver { + /** + * Sub-driver + * + * @var string + */ public $subdriver = 'odbc'; - // The character used for escaping - not used in ODBC + /** + * Database schema + * + * @var string + */ + public $schema = 'public'; + + // -------------------------------------------------------------------- + + /** + * Identifier escape character + * + * Must be empty for ODBC. + * + * @var string + */ protected $_escape_char = ''; - // clause and character used for LIKE escape sequences - protected $_like_escape_chr = '!'; + /** + * ESCAPE statement string + * + * @var string + */ protected $_like_escape_str = " {escape '%s'} "; - protected $_random_keyword = ' RAND()'; + // -------------------------------------------------------------------- /** - * Constructor + * Class constructor * * Builds the DSN if not already set. * - * @param array + * @param array $params * @return void */ public function __construct($params) @@ -123,12 +147,12 @@ class CI_DB_pdo_odbc_driver extends CI_DB_pdo_driver { * * 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 = "SELECT table_name FROM information_schema.tables WHERE table_schema = 'public'"; + $sql = "SELECT table_name FROM information_schema.tables WHERE table_schema = '".$this->schema."'"; if ($prefix_limit !== FALSE && $this->dbprefix !== '') { @@ -146,7 +170,7 @@ class CI_DB_pdo_odbc_driver extends CI_DB_pdo_driver { * * 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 = '') @@ -157,49 +181,19 @@ class CI_DB_pdo_odbc_driver extends CI_DB_pdo_driver { // -------------------------------------------------------------------- /** - * 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($tables) - { - return is_array($tables) ? implode(', ', $tables) : $tables; - } - - // -------------------------------------------------------------------- - - /** * Update statement * * Generates a platform-specific update string from the supplied data * - * @param string the table name - * @param array the update data - * @param array the where clause - * @param array the orderby clause (ignored) - * @param array the limit clause (ignored) - * @param array the like clause + * @param string $table + * @param array $values * @return string */ - protected function _update($table, $values, $where, $orderby = array(), $limit = FALSE, $like = array()) + protected function _update($table, $values) { - foreach ($values as $key => $val) - { - $valstr[] = $key.' = '.$val; - } - - $where = empty($where) ? '' : ' WHERE '.implode(' ', $where); - - if ( ! empty($like)) - { - $where .= ($where === '' ? ' WHERE ' : ' AND ').implode(' ', $like); - } - - return 'UPDATE '.$table.' SET '.implode(', ', $valstr).$where; + $this->qb_limit = FALSE; + $this->qb_orderby = array(); + return parent::_update($table, $values); } // -------------------------------------------------------------------- @@ -209,10 +203,10 @@ class CI_DB_pdo_odbc_driver extends CI_DB_pdo_driver { * * Generates a platform-specific truncate string from the supplied data * - * If the database does not support the truncate() command, + * If the database does not support the TRUNCATE statement, * then this method maps to 'DELETE FROM table' * - * @param string the table name + * @param string $table * @return string */ protected function _truncate($table) @@ -228,38 +222,27 @@ class CI_DB_pdo_odbc_driver extends CI_DB_pdo_driver { * Generates a platform-specific delete string from the supplied data * * @param string the table name - * @param array the where clause - * @param array the like clause - * @param string the limit clause * @return string */ - protected function _delete($table, $where = array(), $like = array(), $limit = FALSE) + protected function _delete($table) { - $conditions = array(); - - empty($where) OR $conditions[] = implode(' ', $where); - empty($like) OR $conditions[] = implode(' ', $like); - - $conditions = (count($conditions) > 0) ? ' WHERE '.implode(' AND ', $conditions) : ''; - - return 'DELETE FROM '.$table.$conditions; + $this->qb_limit = FALSE; + return parent::_delete($table); } // -------------------------------------------------------------------- /** - * Limit string + * LIMIT * * Generates a platform-specific LIMIT clause * - * @param string the sql query string - * @param int the number of rows to limit the query to - * @param int the offset value + * @param string $sql SQL Query * @return string */ - protected function _limit($sql, $limit, $offset) + protected function _limit($sql) { - return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$limit.' ', $sql); + return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$this->qb_limit.' ', $sql); } } |