diff options
Diffstat (limited to 'system/database/drivers/pdo/subdrivers/pdo_oci_driver.php')
-rw-r--r-- | system/database/drivers/pdo/subdrivers/pdo_oci_driver.php | 101 |
1 files changed, 53 insertions, 48 deletions
diff --git a/system/database/drivers/pdo/subdrivers/pdo_oci_driver.php b/system/database/drivers/pdo/subdrivers/pdo_oci_driver.php index 56ec1bce1..2e28476ba 100644 --- a/system/database/drivers/pdo/subdrivers/pdo_oci_driver.php +++ b/system/database/drivers/pdo/subdrivers/pdo_oci_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 Oracle Database Adapter Class @@ -40,24 +41,49 @@ */ class CI_DB_pdo_oci_driver extends CI_DB_pdo_driver { + /** + * Sub-driver + * + * @var string + */ public $subdriver = 'oci'; + // -------------------------------------------------------------------- + /** - * 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. + * List of reserved identifiers + * + * Identifiers that must NOT be escaped. + * + * @var string[] + */ + protected $_reserved_identifiers = array('*', 'rownum'); + + /** + * ORDER BY random keyword + * + * @var string */ - protected $_count_string = 'SELECT COUNT(1) AS '; protected $_random_keyword = ' ASC'; // Currently not supported - protected $_reserved_identifiers = array('*', 'rownum'); + /** + * COUNT string + * + * @used-by CI_DB_driver::count_all() + * @used-by CI_DB_query_builder::count_all_results() + * + * @var string + */ + protected $_count_string = 'SELECT COUNT(1) AS '; + + // -------------------------------------------------------------------- /** - * Constructor + * Class constructor * * Builds the DSN if not already set. * - * @param array + * @param array $params * @return void */ public function __construct($params) @@ -97,7 +123,7 @@ class CI_DB_pdo_oci_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) @@ -120,7 +146,7 @@ class CI_DB_pdo_oci_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 = '') @@ -135,7 +161,7 @@ class CI_DB_pdo_oci_driver extends CI_DB_pdo_driver { * * 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) @@ -146,27 +172,11 @@ class CI_DB_pdo_oci_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; - } - - // -------------------------------------------------------------------- - - /** * Insert_batch statement * - * @param string the table name - * @param array the insert keys - * @param array the insert values + * @param string $table Table name + * @param array $keys INSERT keys + * @param array $values INSERT values * @return string */ protected function _insert_batch($table, $keys, $values) @@ -189,39 +199,34 @@ class CI_DB_pdo_oci_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 + * @param string $table * @return string */ - protected function _delete($table, $where = array(), $like = array(), $limit = FALSE) + protected function _delete($table) { - $conditions = array(); - - empty($where) OR $conditions[] = implode(' ', $where); - empty($like) OR $conditions[] = implode(' ', $like); - empty($limit) OR $conditions[] = 'rownum <= '.$limit; + if ($this->qb_limit) + { + $this->where('rownum <= ',$this->qb_limit, FALSE); + $this->qb_limit = FALSE; + } - return 'DELETE FROM '.$table.(count($conditions) > 0 ? ' WHERE '.implode(' AND ', $conditions) : ''); + return parent::_delete($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 'SELECT * FROM (SELECT inner_query.*, rownum rnum FROM ('.$sql.') inner_query WHERE rownum < '.($offset + $limit + 1).')' - .($offset ? ' WHERE rnum >= '.($offset + 1): ''); + return 'SELECT * FROM (SELECT inner_query.*, rownum rnum FROM ('.$sql.') inner_query WHERE rownum < '.($this->qb_offset + $this->qb_limit + 1).')' + .($this->qb_offset ? ' WHERE rnum >= '.($this->qb_offset + 1): ''); } } |