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authorAndrey Andreev <narf@devilix.net>2014-01-24 13:28:47 +0100
committerAndrey Andreev <narf@devilix.net>2014-01-24 13:28:47 +0100
commit98d6cc84718f471b150bb4e1ec93a7c89a967f69 (patch)
treebf7bc5507eb0ea6f9372d7d15c88069d32798f40 /system/database/drivers/sqlsrv/sqlsrv_driver.php
parentde1fe7d504898bc6a42e24b4c73da3887a9933d6 (diff)
parentecc260e0be0cdb55c4e4802b78ddd78b0d8b0ebc (diff)
Merge branch 'develop' into feature/user-guide-cleanup
Diffstat (limited to 'system/database/drivers/sqlsrv/sqlsrv_driver.php')
-rw-r--r--system/database/drivers/sqlsrv/sqlsrv_driver.php37
1 files changed, 35 insertions, 2 deletions
diff --git a/system/database/drivers/sqlsrv/sqlsrv_driver.php b/system/database/drivers/sqlsrv/sqlsrv_driver.php
index 09e6b8c9a..2759bac0b 100644
--- a/system/database/drivers/sqlsrv/sqlsrv_driver.php
+++ b/system/database/drivers/sqlsrv/sqlsrv_driver.php
@@ -48,6 +48,18 @@ class CI_DB_sqlsrv_driver extends CI_DB {
*/
public $dbdriver = 'sqlsrv';
+ /**
+ * Scrollable flag
+ *
+ * Determines what cursor type to use when executing queries.
+ *
+ * FALSE or SQLSRV_CURSOR_FORWARD would increase performance,
+ * but would disable num_rows() (and possibly insert_id())
+ *
+ * @var mixed
+ */
+ public $scrollable;
+
// --------------------------------------------------------------------
/**
@@ -70,6 +82,27 @@ class CI_DB_sqlsrv_driver extends CI_DB {
// --------------------------------------------------------------------
/**
+ * Class constructor
+ *
+ * @param array $params
+ * @return void
+ */
+ public function __construct($params)
+ {
+ parent::__construct($params);
+
+ // This is only supported as of SQLSRV 3.0
+ if ($this->scrollable === NULL)
+ {
+ $this->scrollable = defined('SQLSRV_CURSOR_CLIENT_BUFFERED')
+ ? SQLSRV_CURSOR_CLIENT_BUFFERED
+ : FALSE;
+ }
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
* Database connection
*
* @param bool $pooling
@@ -154,9 +187,9 @@ class CI_DB_sqlsrv_driver extends CI_DB {
*/
protected function _execute($sql)
{
- return ($this->is_write_type($sql) && stripos($sql, 'INSERT') === FALSE)
+ return ($this->scrollable === FALSE OR $this->is_write_type($sql))
? sqlsrv_query($this->conn_id, $sql)
- : sqlsrv_query($this->conn_id, $sql, NULL, array('Scrollable' => SQLSRV_CURSOR_STATIC));
+ : sqlsrv_query($this->conn_id, $sql, NULL, array('Scrollable' => $this->scrollable));
}
// --------------------------------------------------------------------