From c1bc8f6c827a27540b5510b42dcc65b39d38f2c1 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Mon, 14 Oct 2013 07:19:37 -0400
Subject: [PATCH] Change so abort=true does not break the loop in exec_hook(), provide a new 'break' flag for this purpose
---
program/lib/Roundcube/rcube_db_mssql.php | 64 ++++++++++++++++++++-----------
1 files changed, 41 insertions(+), 23 deletions(-)
diff --git a/program/lib/Roundcube/rcube_db_mssql.php b/program/lib/Roundcube/rcube_db_mssql.php
index 84fe22b..726e4b4 100644
--- a/program/lib/Roundcube/rcube_db_mssql.php
+++ b/program/lib/Roundcube/rcube_db_mssql.php
@@ -29,37 +29,51 @@
public $db_provider = 'mssql';
/**
- * Driver initialization
+ * Object constructor
+ *
+ * @param string $db_dsnw DSN for read/write operations
+ * @param string $db_dsnr Optional DSN for read only operations
+ * @param bool $pconn Enables persistent connections
*/
- protected function init()
+ public function __construct($db_dsnw, $db_dsnr = '', $pconn = false)
{
+ parent::__construct($db_dsnw, $db_dsnr, $pconn);
+
$this->options['identifier_start'] = '[';
$this->options['identifier_end'] = ']';
}
/**
- * Character setting
+ * Driver-specific configuration of database connection
+ *
+ * @param array $dsn DSN for DB connections
+ * @param PDO $dbh Connection handler
*/
- protected function set_charset($charset)
+ protected function conn_configure($dsn, $dbh)
{
- // UTF-8 is default
+ // 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 $interval Optional interval (in seconds) to add/subtract
+ *
* @return string SQL function to use in query
*/
- public function now()
+ public function now($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
*
@@ -100,25 +114,29 @@
{
$limit = intval($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) {
- $sort = (stripos($orderby, ' desc') !== false) ? 'desc' : 'asc';
- $order = str_ireplace('ORDER BY', '', $orderby);
- $order = trim(preg_replace('/\bASC\b|\bDESC\b/i', '', $order));
+ $query = trim(substr($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";
}
- $query = preg_replace('/^SELECT\s/i', 'SELECT TOP ' . ($limit + $offset) . ' ', $query);
-
- $query = 'SELECT * FROM (SELECT TOP ' . $limit . ' * FROM (' . $query . ') AS inner_tbl';
- if ($orderby !== false) {
- $query .= ' ORDER BY ' . $order . ' ';
- $query .= (stripos($sort, 'asc') !== false) ? 'DESC' : 'ASC';
- }
- $query .= ') AS outer_tbl';
- if ($orderby !== false) {
- $query .= ' ORDER BY ' . $order . ' ' . $sort;
- }
+ $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;
}
--
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