diff options
Diffstat (limited to 'system/database/drivers/odbc/odbc_driver.php')
| -rw-r--r-- | system/database/drivers/odbc/odbc_driver.php | 106 |
1 files changed, 81 insertions, 25 deletions
diff --git a/system/database/drivers/odbc/odbc_driver.php b/system/database/drivers/odbc/odbc_driver.php index 8f0a474b0..29b2281cc 100644 --- a/system/database/drivers/odbc/odbc_driver.php +++ b/system/database/drivers/odbc/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 1.0 * @filesource */ +defined('BASEPATH') OR exit('No direct script access allowed'); /** * ODBC Database Adapter Class @@ -40,23 +41,57 @@ */ class CI_DB_odbc_driver extends CI_DB { + /** + * Database driver + * + * @var string + */ public $dbdriver = 'odbc'; - // the character used to excape - not necessary for 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 + /** + * ESCAPE statement string + * + * @var string + */ protected $_like_escape_str = " {escape '%s'} "; - protected $_like_escape_chr = '!'; - protected $_random_keyword; + /** + * ORDER BY random keyword + * + * @var array + */ + protected $_random_keyword = array('RND()', 'RND(%d)'); + + // -------------------------------------------------------------------- + /** + * Class constructor + * + * @param array $params + * @return void + */ public function __construct($params) { parent::__construct($params); - $this->_random_keyword = ' RND('.time().')'; // database specific random keyword - // Legacy support for DSN in the hostname field if (empty($this->dsn)) { @@ -64,6 +99,8 @@ class CI_DB_odbc_driver extends CI_DB { } } + // -------------------------------------------------------------------- + /** * Non-persistent database connection * @@ -91,7 +128,7 @@ class CI_DB_odbc_driver extends CI_DB { /** * Execute the query * - * @param string an SQL query + * @param string $sql an SQL query * @return resource */ protected function _execute($sql) @@ -104,6 +141,7 @@ class CI_DB_odbc_driver extends CI_DB { /** * Begin Transaction * + * @param bool $test_mode * @return bool */ public function trans_begin($test_mode = FALSE) @@ -167,8 +205,8 @@ class CI_DB_odbc_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, $like = FALSE) @@ -217,7 +255,7 @@ class CI_DB_odbc_driver extends CI_DB { */ public function insert_id() { - return ($this->db->db_debug) ? $this->db->display_error('db_unsuported_feature') : FALSE; + return ($this->db->db_debug) ? $this->db->display_error('db_unsupported_feature') : FALSE; } // -------------------------------------------------------------------- @@ -227,17 +265,17 @@ class CI_DB_odbc_driver extends CI_DB { * * 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) { - $sql = 'SHOW TABLES FROM '.$this->database; + $sql = "SELECT table_name FROM information_schema.tables WHERE table_schema = '".$this->schema."'"; if ($prefix_limit !== FALSE && $this->dbprefix !== '') { - //$sql .= " LIKE '".$this->escape_like_str($this->dbprefix)."%' ".sprintf($this->_like_escape_str, $this->_like_escape_chr); - return FALSE; // not currently supported + return $sql." AND table_name LIKE '".$this->escape_like_str($this->dbprefix)."%' " + .sprintf($this->_like_escape_str, $this->_like_escape_chr); } return $sql; @@ -250,7 +288,7 @@ class CI_DB_odbc_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 = '') @@ -265,7 +303,7 @@ class CI_DB_odbc_driver extends CI_DB { * * Generates a platform-specific query so that the column data can be retrieved * - * @param string the table name + * @param string $table * @return string */ protected function _field_data($table) @@ -291,17 +329,19 @@ class CI_DB_odbc_driver extends CI_DB { // -------------------------------------------------------------------- /** - * From Tables + * Update statement * - * This function implicitly groups FROM tables so there is no confusion - * about operator precedence in harmony with SQL standards + * Generates a platform-specific update string from the supplied data * - * @param array + * @param string $table + * @param array $values * @return string */ - protected function _from_tables($tables) + protected function _update($table, $values) { - return is_array($tables) ? implode(', ', $tables) : $tables; + $this->qb_limit = FALSE; + $this->qb_orderby = array(); + return parent::_update($table, $values); } // -------------------------------------------------------------------- @@ -311,10 +351,10 @@ class CI_DB_odbc_driver extends CI_DB { * * 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) @@ -325,6 +365,22 @@ class CI_DB_odbc_driver extends CI_DB { // -------------------------------------------------------------------- /** + * Delete statement + * + * Generates a platform-specific delete string from the supplied data + * + * @param string $table + * @return string + */ + protected function _delete($table) + { + $this->qb_limit = FALSE; + return parent::_delete($table); + } + + // -------------------------------------------------------------------- + + /** * Close DB Connection * * @return void |