diff options
Diffstat (limited to 'phpBB/includes/db/driver/mysql_base.php')
-rw-r--r-- | phpBB/includes/db/driver/mysql_base.php | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/phpBB/includes/db/driver/mysql_base.php b/phpBB/includes/db/driver/mysql_base.php deleted file mode 100644 index ba44ea61aa..0000000000 --- a/phpBB/includes/db/driver/mysql_base.php +++ /dev/null @@ -1,145 +0,0 @@ -<?php -/** -* -* @package dbal -* @copyright (c) 2013 phpBB Group -* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2 -* -*/ - -/** -* @ignore -*/ -if (!defined('IN_PHPBB')) -{ - exit; -} - -/** -* Abstract MySQL Database Base Abstraction Layer -* @package dbal -*/ -abstract class phpbb_db_driver_mysql_base extends phpbb_db_driver -{ - /** - * {@inheritDoc} - */ - public function sql_concatenate($expr1, $expr2) - { - return 'CONCAT(' . $expr1 . ', ' . $expr2 . ')'; - } - - /** - * Build LIMIT query - */ - function _sql_query_limit($query, $total, $offset = 0, $cache_ttl = 0) - { - $this->query_result = false; - - // if $total is set to 0 we do not want to limit the number of rows - if ($total == 0) - { - // MySQL 4.1+ no longer supports -1 in limit queries - $total = '18446744073709551615'; - } - - $query .= "\n LIMIT " . ((!empty($offset)) ? $offset . ', ' . $total : $total); - - return $this->sql_query($query, $cache_ttl); - } - - /** - * Gets the estimated number of rows in a specified table. - * - * @param string $table_name Table name - * - * @return string Number of rows in $table_name. - * Prefixed with ~ if estimated (otherwise exact). - * - * @access public - */ - function get_estimated_row_count($table_name) - { - $table_status = $this->get_table_status($table_name); - - if (isset($table_status['Engine'])) - { - if ($table_status['Engine'] === 'MyISAM') - { - return $table_status['Rows']; - } - else if ($table_status['Engine'] === 'InnoDB' && $table_status['Rows'] > 100000) - { - return '~' . $table_status['Rows']; - } - } - - return parent::get_row_count($table_name); - } - - /** - * Gets the exact number of rows in a specified table. - * - * @param string $table_name Table name - * - * @return string Exact number of rows in $table_name. - * - * @access public - */ - function get_row_count($table_name) - { - $table_status = $this->get_table_status($table_name); - - if (isset($table_status['Engine']) && $table_status['Engine'] === 'MyISAM') - { - return $table_status['Rows']; - } - - return parent::get_row_count($table_name); - } - - /** - * Gets some information about the specified table. - * - * @param string $table_name Table name - * - * @return array - * - * @access protected - */ - function get_table_status($table_name) - { - $sql = "SHOW TABLE STATUS - LIKE '" . $this->sql_escape($table_name) . "'"; - $result = $this->sql_query($sql); - $table_status = $this->sql_fetchrow($result); - $this->sql_freeresult($result); - - return $table_status; - } - - /** - * Build LIKE expression - * @access private - */ - function _sql_like_expression($expression) - { - return $expression; - } - - /** - * Build db-specific query data - * @access private - */ - function _sql_custom_build($stage, $data) - { - switch ($stage) - { - case 'FROM': - $data = '(' . $data . ')'; - break; - } - - return $data; - } -} |