1 files changed, 2 insertions, 119 deletions
diff --git a/program/lib/Roundcube/rcube_db_sqlsrv.php b/program/lib/Roundcube/rcube_db_sqlsrv.php
index 4339f3dfd..7b64ccea2 100644
--- a/program/lib/Roundcube/rcube_db_sqlsrv.php
+++ b/program/lib/Roundcube/rcube_db_sqlsrv.php
@@ -24,126 +24,8 @@
  * @package    Framework
  * @subpackage Database
  */
-class rcube_db_sqlsrv extends rcube_db
+class rcube_db_sqlsrv extends rcube_db_mssql
 {
-    public $db_provider = 'mssql';
-
-    /**
-     * Object constructor
-     *
-     * @param string $db_dsnw DSN for read/write operations
-     * @param string $db_dsnr Optional DSN for read only operations
-     * @param bool   $pconn   Enables persistent connections
-     */
-    public function __construct($db_dsnw, $db_dsnr = '', $pconn = false)
-    {
-        parent::__construct($db_dsnw, $db_dsnr, $pconn);
-
-        $this->options['identifier_start'] = '[';
-        $this->options['identifier_end'] = ']';
-    }
-
-    /**
-     * Driver-specific configuration of database connection
-     *
-     * @param array $dsn DSN for DB connections
-     * @param PDO   $dbh Connection handler
-     */
-    protected function conn_configure($dsn, $dbh)
-    {
-        // Set date format in case of non-default language (#1488918)
-        $dbh->query("SET DATEFORMAT ymd");
-    }
-
-    /**
-     * Return SQL function for current time and date
-     *
-     * @param int $interval Optional interval (in seconds) to add/subtract
-     *
-     * @return string SQL function to use in query
-     */
-    public function now($interval = 0)
-    {
-        if ($interval) {
-            $interval = intval($interval);
-            return "dateadd(second, $interval, getdate())";
-        }
-
-        return "getdate()";
-    }
-
-    /**
-     * Return SQL statement to convert a field value into a unix timestamp
-     *
-     * This method is deprecated and should not be used anymore due to limitations
-     * of timestamp functions in Mysql (year 2038 problem)
-     *
-     * @param string $field Field name
-     *
-     * @return string SQL statement to use in query
-     * @deprecated
-     */
-    public function unixtimestamp($field)
-    {
-        return "DATEDIFF(second, '19700101', $field) + DATEDIFF(second, GETDATE(), GETUTCDATE())";
-    }
-
-    /**
-     * Abstract SQL statement for value concatenation
-     *
-     * @return string SQL statement to be used in query
-     */
-    public function concat(/* col1, col2, ... */)
-    {
-        $args = func_get_args();
-
-        if (is_array($args[0])) {
-            $args = $args[0];
-        }
-
-        return '(' . join('+', $args) . ')';
-    }
-
-    /**
-     * Adds TOP (LIMIT,OFFSET) clause to the query
-     *
-     * @param string $query  SQL query
-     * @param int    $limit  Number of rows
-     * @param int    $offset Offset
-     *
-     * @return string SQL query
-     */
-    protected function set_limit($query, $limit = 0, $offset = 0)
-    {
-        $limit  = intval($limit);
-        $offset = intval($offset);
-        $end    = $offset + $limit;
-
-        // query without OFFSET
-        if (!$offset) {
-            $query = preg_replace('/^SELECT\s/i', "SELECT TOP $limit ", $query);
-            return $query;
-        }
-
-        $orderby = stristr($query, 'ORDER BY');
-        $offset += 1;
-
-        if ($orderby !== false) {
-            $query = trim(substr($query, 0, -1 * strlen($orderby)));
-        }
-        else {
-            // it shouldn't happen, paging without sorting has not much sense
-            // @FIXME: I don't know how to build paging query without ORDER BY
-            $orderby = "ORDER BY 1";
-        }
-
-        $query = preg_replace('/^SELECT\s/i', '', $query);
-        $query = "WITH paging AS (SELECT ROW_NUMBER() OVER ($orderby) AS [RowNumber], $query)"
-            . " SELECT * FROM paging WHERE [RowNumber] BETWEEN $offset AND $end ORDER BY [RowNumber]";
-
-        return $query;
-    }
-
     /**
      * Returns PDO DSN string from DSN array
      */
@@ -158,6 +40,7 @@ class rcube_db_sqlsrv extends rcube_db
             if ($dsn['port']) {
                 $host .= ',' . $dsn['port'];
             }
+
             $params[] = 'Server=' . $host;
         }