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-rw-r--r--system/database/DB_active_rec.php26
-rw-r--r--system/database/DB_result.php97
-rw-r--r--system/database/drivers/postgre/postgre_driver.php18
-rw-r--r--system/database/drivers/sqlsrv/index.html10
-rw-r--r--system/database/drivers/sqlsrv/sqlsrv_driver.php598
-rw-r--r--system/database/drivers/sqlsrv/sqlsrv_forge.php248
-rw-r--r--system/database/drivers/sqlsrv/sqlsrv_result.php169
-rw-r--r--system/database/drivers/sqlsrv/sqlsrv_utility.php88
8 files changed, 1197 insertions, 57 deletions
diff --git a/system/database/DB_active_rec.php b/system/database/DB_active_rec.php
index 9ceac0b76..52bad260a 100644
--- a/system/database/DB_active_rec.php
+++ b/system/database/DB_active_rec.php
@@ -60,7 +60,7 @@ class CI_DB_active_record extends CI_DB_driver {
var $ar_cache_set = array();
var $ar_no_escape = array();
-
+ var $ar_cache_no_escape = array();
// --------------------------------------------------------------------
@@ -93,6 +93,7 @@ class CI_DB_active_record extends CI_DB_driver {
{
$this->ar_cache_select[] = $val;
$this->ar_cache_exists[] = 'select';
+ $this->ar_cache_no_escape[] = $escape;
}
}
}
@@ -1933,16 +1934,17 @@ class CI_DB_active_record extends CI_DB_driver {
{
$this->_reset_run(
array(
- 'ar_cache_select' => array(),
- 'ar_cache_from' => array(),
- 'ar_cache_join' => array(),
- 'ar_cache_where' => array(),
- 'ar_cache_like' => array(),
- 'ar_cache_groupby' => array(),
- 'ar_cache_having' => array(),
- 'ar_cache_orderby' => array(),
- 'ar_cache_set' => array(),
- 'ar_cache_exists' => array()
+ 'ar_cache_select' => array(),
+ 'ar_cache_from' => array(),
+ 'ar_cache_join' => array(),
+ 'ar_cache_where' => array(),
+ 'ar_cache_like' => array(),
+ 'ar_cache_groupby' => array(),
+ 'ar_cache_having' => array(),
+ 'ar_cache_orderby' => array(),
+ 'ar_cache_set' => array(),
+ 'ar_cache_exists' => array(),
+ 'ar_cache_no_escape' => array()
)
);
}
@@ -1984,6 +1986,8 @@ class CI_DB_active_record extends CI_DB_driver {
{
$this->_track_aliases($this->ar_from);
}
+
+ $this->ar_no_escape = $this->ar_cache_no_escape;
}
// --------------------------------------------------------------------
diff --git a/system/database/DB_result.php b/system/database/DB_result.php
index 76e1d6abb..0c4e78105 100644
--- a/system/database/DB_result.php
+++ b/system/database/DB_result.php
@@ -28,14 +28,14 @@
*/
class CI_DB_result {
- var $conn_id = NULL;
- var $result_id = NULL;
- var $result_array = array();
- var $result_object = array();
- var $custom_result_object = array();
- var $current_row = 0;
- var $num_rows = 0;
- var $row_data = NULL;
+ var $conn_id = NULL;
+ var $result_id = NULL;
+ var $result_array = array();
+ var $result_object = array();
+ var $custom_result_object = array();
+ var $current_row = 0;
+ var $num_rows = 0;
+ var $row_data = NULL;
/**
@@ -47,47 +47,52 @@ class CI_DB_result {
*/
function result($type = 'object')
{
- if ($type == 'array') return $this->result_array();
- else if ($type == 'object') return $this->result_object();
- else return $this->custom_result_object($type);
+ if ($type == 'array') return $this->result_array();
+ else if ($type == 'object') return $this->result_object();
+ else return $this->custom_result_object($type);
}
// --------------------------------------------------------------------
- /**
- * Custom query result.
- *
- * @param class_name A string that represents the type of object you want back
- * @return array of objects
- */
- function custom_result_object($class_name)
- {
- if (array_key_exists($class_name, $this->custom_result_object))
- {
- return $this->custom_result_object[$class_name];
- }
-
- if ($this->result_id === FALSE OR $this->num_rows() == 0)
- {
- return array();
- }
-
- // add the data to the object
- $this->_data_seek(0);
- $result_object = array();
+ /**
+ * Custom query result.
+ *
+ * @param class_name A string that represents the type of object you want back
+ * @return array of objects
+ */
+ function custom_result_object($class_name)
+ {
+ if (array_key_exists($class_name, $this->custom_result_object))
+ {
+ return $this->custom_result_object[$class_name];
+ }
+
+ if ($this->result_id === FALSE OR $this->num_rows() == 0)
+ {
+ return array();
+ }
+
+ // add the data to the object
+ $this->_data_seek(0);
+ $result_object = array();
+
while ($row = $this->_fetch_object())
- {
- $object = new $class_name();
- foreach ($row as $key => $value)
- {
- $object->$key = $value;
- }
+ {
+ $object = new $class_name();
+
+ foreach ($row as $key => $value)
+ {
+ $object->$key = $value;
+ }
+
$result_object[] = $object;
}
- // return the array
- return $this->custom_result_object[$class_name] = $result_object;
- }
+ // return the array
+ return $this->custom_result_object[$class_name] = $result_object;
+ }
+
+ // --------------------------------------------------------------------
/**
* Query result. "object" version.
@@ -180,9 +185,9 @@ class CI_DB_result {
$n = 0;
}
- if ($type == 'object') return $this->row_object($n);
- else if ($type == 'array') return $this->row_array($n);
- else return $this->custom_row_object($n, $type);
+ if ($type == 'object') return $this->row_object($n);
+ else if ($type == 'array') return $this->row_array($n);
+ else return $this->custom_row_object($n, $type);
}
// --------------------------------------------------------------------
@@ -219,7 +224,7 @@ class CI_DB_result {
// --------------------------------------------------------------------
- /**
+ /**
* Returns a single result row - custom object version
*
* @access public
@@ -242,7 +247,7 @@ class CI_DB_result {
return $result[$this->current_row];
}
- /**
+ /**
* Returns a single result row - object version
*
* @access public
diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php
index 47ff36246..140396885 100644
--- a/system/database/drivers/postgre/postgre_driver.php
+++ b/system/database/drivers/postgre/postgre_driver.php
@@ -554,6 +554,24 @@ class CI_DB_postgre_driver extends CI_DB {
// --------------------------------------------------------------------
/**
+ * Insert_batch statement
+ *
+ * Generates a platform-specific insert string from the supplied data
+ *
+ * @access public
+ * @param string the table name
+ * @param array the insert keys
+ * @param array the insert values
+ * @return string
+ */
+ function _insert_batch($table, $keys, $values)
+ {
+ return "INSERT INTO ".$table." (".implode(', ', $keys).") VALUES ".implode(', ', $values);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
* Update statement
*
* Generates a platform-specific update string from the supplied data
diff --git a/system/database/drivers/sqlsrv/index.html b/system/database/drivers/sqlsrv/index.html
new file mode 100644
index 000000000..c942a79ce
--- /dev/null
+++ b/system/database/drivers/sqlsrv/index.html
@@ -0,0 +1,10 @@
+<html>
+<head>
+ <title>403 Forbidden</title>
+</head>
+<body>
+
+<p>Directory access is forbidden.</p>
+
+</body>
+</html> \ No newline at end of file
diff --git a/system/database/drivers/sqlsrv/sqlsrv_driver.php b/system/database/drivers/sqlsrv/sqlsrv_driver.php
new file mode 100644
index 000000000..1d32792ce
--- /dev/null
+++ b/system/database/drivers/sqlsrv/sqlsrv_driver.php
@@ -0,0 +1,598 @@
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * @package CodeIgniter
+ * @author ExpressionEngine Dev Team
+ * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
+ * @license http://codeigniter.com/user_guide/license.html
+ * @link http://codeigniter.com
+ * @since Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * SQLSRV Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the active record
+ * class is being used or not.
+ *
+ * @package CodeIgniter
+ * @subpackage Drivers
+ * @category Database
+ * @author ExpressionEngine Dev Team
+ * @link http://codeigniter.com/user_guide/database/
+ */
+class CI_DB_sqlsrv_driver extends CI_DB {
+
+ var $dbdriver = 'sqlsrv';
+
+ // The character used for escaping
+ var $_escape_char = '';
+
+ // clause and character used for LIKE escape sequences
+ var $_like_escape_str = " ESCAPE '%s' ";
+ var $_like_escape_chr = '!';
+
+ /**
+ * 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.
+ */
+ var $_count_string = "SELECT COUNT(*) AS ";
+ var $_random_keyword = ' ASC'; // not currently supported
+
+ /**
+ * Non-persistent database connection
+ *
+ * @access private called by the base class
+ * @return resource
+ */
+ function db_connect($pooling = false)
+ {
+ // Check for a UTF-8 charset being passed as CI's default 'utf8'.
+ $character_set = (0 === strcasecmp('utf8', $this->char_set)) ? 'UTF-8' : $this->char_set;
+
+ $connection = array(
+ 'UID' => empty($this->username) ? '' : $this->username,
+ 'PWD' => empty($this->password) ? '' : $this->password,
+ 'Database' => $this->database,
+ 'ConnectionPooling' => $pooling ? 1 : 0,
+ 'CharacterSet' => $character_set,
+ 'ReturnDatesAsStrings' => 1
+ );
+
+ // If the username and password are both empty, assume this is a
+ // 'Windows Authentication Mode' connection.
+ if(empty($connection['UID']) && empty($connection['PWD'])) {
+ unset($connection['UID'], $connection['PWD']);
+ }
+
+ return sqlsrv_connect($this->hostname, $connection);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Persistent database connection
+ *
+ * @access private called by the base class
+ * @return resource
+ */
+ function db_pconnect()
+ {
+ $this->db_connect(TRUE);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Reconnect
+ *
+ * Keep / reestablish the db connection if no queries have been
+ * sent for a length of time exceeding the server's idle timeout
+ *
+ * @access public
+ * @return void
+ */
+ function reconnect()
+ {
+ // not implemented in MSSQL
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Select the database
+ *
+ * @access private called by the base class
+ * @return resource
+ */
+ function db_select()
+ {
+ return $this->_execute('USE ' . $this->database);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Set client character set
+ *
+ * @access public
+ * @param string
+ * @param string
+ * @return resource
+ */
+ function db_set_charset($charset, $collation)
+ {
+ // @todo - add support if needed
+ return TRUE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Execute the query
+ *
+ * @access private called by the base class
+ * @param string an SQL query
+ * @return resource
+ */
+ function _execute($sql)
+ {
+ $sql = $this->_prep_query($sql);
+ return sqlsrv_query($this->conn_id, $sql, null, array(
+ 'Scrollable' => SQLSRV_CURSOR_STATIC,
+ 'SendStreamParamsAtExec' => true
+ ));
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Prep the query
+ *
+ * If needed, each database adapter can prep the query string
+ *
+ * @access private called by execute()
+ * @param string an SQL query
+ * @return string
+ */
+ function _prep_query($sql)
+ {
+ return $sql;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Begin Transaction
+ *
+ * @access public
+ * @return bool
+ */
+ function trans_begin($test_mode = FALSE)
+ {
+ if ( ! $this->trans_enabled)
+ {
+ return TRUE;
+ }
+
+ // When transactions are nested we only begin/commit/rollback the outermost ones
+ if ($this->_trans_depth > 0)
+ {
+ return TRUE;
+ }
+
+ // Reset the transaction failure flag.
+ // If the $test_mode flag is set to TRUE transactions will be rolled back
+ // even if the queries produce a successful result.
+ $this->_trans_failure = ($test_mode === TRUE) ? TRUE : FALSE;
+
+ return sqlsrv_begin_transaction($this->conn_id);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Commit Transaction
+ *
+ * @access public
+ * @return bool
+ */
+ function trans_commit()
+ {
+ if ( ! $this->trans_enabled)
+ {
+ return TRUE;
+ }
+
+ // When transactions are nested we only begin/commit/rollback the outermost ones
+ if ($this->_trans_depth > 0)
+ {
+ return TRUE;
+ }
+
+ return sqlsrv_commit($this->conn_id);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Rollback Transaction
+ *
+ * @access public
+ * @return bool
+ */
+ function trans_rollback()
+ {
+ if ( ! $this->trans_enabled)
+ {
+ return TRUE;
+ }
+
+ // When transactions are nested we only begin/commit/rollback the outermost ones
+ if ($this->_trans_depth > 0)
+ {
+ return TRUE;
+ }
+
+ return sqlsrv_rollback($this->conn_id);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Escape String
+ *
+ * @access public
+ * @param string
+ * @param bool whether or not the string will be used in a LIKE condition
+ * @return string
+ */
+ function escape_str($str, $like = FALSE)
+ {
+ // Escape single quotes
+ return str_replace("'", "''", $str);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Affected Rows
+ *
+ * @access public
+ * @return integer
+ */
+ function affected_rows()
+ {
+ return @sqlrv_rows_affected($this->conn_id);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Insert ID
+ *
+ * Returns the last id created in the Identity column.
+ *
+ * @access public
+ * @return integer
+ */
+ function insert_id()
+ {
+ return $this->query('select @@IDENTITY as insert_id')->row('insert_id');
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Parse major version
+ *
+ * Grabs the major version number from the
+ * database server version string passed in.
+ *
+ * @access private
+ * @param string $version
+ * @return int16 major version number
+ */
+ function _parse_major_version($version)
+ {
+ preg_match('/([0-9]+)\.([0-9]+)\.([0-9]+)/', $version, $ver_info);
+ return $ver_info[1]; // return the major version b/c that's all we're interested in.
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Version number query string
+ *
+ * @access public
+ * @return string
+ */
+ function _version()
+ {
+ $info = sqlsrv_server_info($this->conn_id);
+ return sprintf("select '%s' as ver", $info['SQLServerVersion']);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * "Count All" query
+ *
+ * Generates a platform-specific query string that counts all records in
+ * the specified database
+ *
+ * @access public
+ * @param string
+ * @return string
+ */
+ function count_all($table = '')
+ {
+ if ($table == '')
+ return '0';
+
+ $query = $this->query("SELECT COUNT(*) AS numrows FROM " . $this->dbprefix . $table);
+
+ if ($query->num_rows() == 0)
+ return '0';
+
+ $row = $query->row();
+ return $row->numrows;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * List table query
+ *
+ * Generates a platform-specific query string so that the table names can be fetched
+ *
+ * @access private
+ * @param boolean
+ * @return string
+ */
+ function _list_tables($prefix_limit = FALSE)
+ {
+ return "SELECT name FROM sysobjects WHERE type = 'U' ORDER BY name";
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * List column query
+ *
+ * Generates a platform-specific query string so that the column names can be fetched
+ *
+ * @access private
+ * @param string the table name
+ * @return string
+ */
+ function _list_columns($table = '')
+ {
+ return "SELECT * FROM INFORMATION_SCHEMA.Columns WHERE TABLE_NAME = '".$this->_escape_table($table)."'";
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Field data query
+ *
+ * Generates a platform-specific query so that the column data can be retrieved
+ *
+ * @access public
+ * @param string the table name
+ * @return object
+ */
+ function _field_data($table)
+ {
+ return "SELECT TOP 1 * FROM " . $this->_escape_table($table);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * The error message string
+ *
+ * @access private
+ * @return string
+ */
+ function _error_message()
+ {
+ $error = array_shift(sqlsrv_errors());
+ return !empty($error['message']) ? $error['message'] : null;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * The error message number
+ *
+ * @access private
+ * @return integer
+ */
+ function _error_number()
+ {
+ $error = array_shift(sqlsrv_errors());
+ return isset($error['SQLSTATE']) ? $error['SQLSTATE'] : null;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Escape Table Name
+ *
+ * This function adds backticks if the table name has a period
+ * in it. Some DBs will get cranky unless periods are escaped
+ *
+ * @access private
+ * @param string the table name
+ * @return string
+ */
+ function _escape_table($table)
+ {
+ return $table;
+ }
+
+
+ /**
+ * Escape the SQL Identifiers
+ *
+ * This function escapes column and table names
+ *
+ * @access private
+ * @param string
+ * @return string
+ */
+ function _escape_identifiers($item)
+ {
+ return $item;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * From Tables
+ *
+ * This function implicitly groups FROM tables so there is no confusion
+ * about operator precedence in harmony with SQL standards
+ *
+ * @access public
+ * @param type
+ * @return type
+ */
+ function _from_tables($tables)
+ {
+ if ( ! is_array($tables))
+ {
+ $tables = array($tables);
+ }
+
+ return implode(', ', $tables);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Insert statement
+ *
+ * Generates a platform-specific insert string from the supplied data
+ *
+ * @access public
+ * @param string the table name
+ * @param array the insert keys
+ * @param array the insert values
+ * @return string
+ */
+ function _insert($table, $keys, $values)
+ {
+ return "INSERT INTO ".$this->_escape_table($table)." (".implode(', ', $keys).") VALUES (".implode(', ', $values).")";
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Update statement
+ *
+ * Generates a platform-specific update string from the supplied data
+ *
+ * @access public
+ * @param string the table name
+ * @param array the update data
+ * @param array the where clause
+ * @param array the orderby clause
+ * @param array the limit clause
+ * @return string
+ */
+ function _update($table, $values, $where)
+ {
+ foreach($values as $key => $val)
+ {
+ $valstr[] = $key." = ".$val;
+ }
+
+ return "UPDATE ".$this->_escape_table($table)." SET ".implode(', ', $valstr)." WHERE ".implode(" ", $where);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Truncate statement
+ *
+ * Generates a platform-specific truncate string from the supplied data
+ * If the database does not support the truncate() command
+ * This function maps to "DELETE FROM table"
+ *
+ * @access public
+ * @param string the table name
+ * @return string
+ */
+ function _truncate($table)
+ {
+ return "TRUNCATE ".$table;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Delete statement
+ *
+ * Generates a platform-specific delete string from the supplied data
+ *
+ * @access public
+ * @param string the table name
+ * @param array the where clause
+ * @param string the limit clause
+ * @return string
+ */
+ function _delete($table, $where)
+ {
+ return "DELETE FROM ".$this->_escape_table($table)." WHERE ".implode(" ", $where);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Limit string
+ *
+ * Generates a platform-specific LIMIT clause
+ *
+ * @access public
+ * @param string the sql query string
+ * @param integer the number of rows to limit the query to
+ * @param integer the offset value
+ * @return string
+ */
+ function _limit($sql, $limit, $offset)
+ {
+ $i = $limit + $offset;
+
+ return preg_replace('/(^\SELECT (DISTINCT)?)/i','\\1 TOP '.$i.' ', $sql);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Close DB Connection
+ *
+ * @access public
+ * @param resource
+ * @return void
+ */
+ function _close($conn_id)
+ {
+ @sqlsrv_close($conn_id);
+ }
+
+}
+
+
+
+/* End of file mssql_driver.php */
+/* Location: ./system/database/drivers/mssql/mssql_driver.php */ \ No newline at end of file
diff --git a/system/database/drivers/sqlsrv/sqlsrv_forge.php b/system/database/drivers/sqlsrv/sqlsrv_forge.php
new file mode 100644
index 000000000..cc88ec5ca
--- /dev/null
+++ b/system/database/drivers/sqlsrv/sqlsrv_forge.php
@@ -0,0 +1,248 @@
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * @package CodeIgniter
+ * @author ExpressionEngine Dev Team
+ * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
+ * @license http://codeigniter.com/user_guide/license.html
+ * @link http://codeigniter.com
+ * @since Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * SQLSRV Forge Class
+ *
+ * @category Database
+ * @author ExpressionEngine Dev Team
+ * @link http://codeigniter.com/user_guide/database/
+ */
+class CI_DB_sqlsrv_forge extends CI_DB_forge {
+
+ /**
+ * Create database
+ *
+ * @access private
+ * @param string the database name
+ * @return bool
+ */
+ function _create_database($name)
+ {
+ return "CREATE DATABASE ".$name;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Drop database
+ *
+ * @access private
+ * @param string the database name
+ * @return bool
+ */
+ function _drop_database($name)
+ {
+ return "DROP DATABASE ".$name;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Drop Table
+ *
+ * @access private
+ * @return bool
+ */
+ function _drop_table($table)
+ {
+ return "DROP TABLE ".$this->db->_escape_identifiers($table);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Create Table
+ *
+ * @access private
+ * @param string the table name
+ * @param array the fields
+ * @param mixed primary key(s)
+ * @param mixed key(s)
+ * @param boolean should 'IF NOT EXISTS' be added to the SQL
+ * @return bool
+ */
+ function _create_table($table, $fields, $primary_keys, $keys, $if_not_exists)
+ {
+ $sql = 'CREATE TABLE ';
+
+ if ($if_not_exists === TRUE)
+ {
+ $sql .= 'IF NOT EXISTS ';
+ }
+
+ $sql .= $this->db->_escape_identifiers($table)." (";
+ $current_field_count = 0;
+
+ foreach ($fields as $field=>$attributes)
+ {
+ // Numeric field names aren't allowed in databases, so if the key is
+ // numeric, we know it was assigned by PHP and the developer manually
+ // entered the field information, so we'll simply add it to the list
+ if (is_numeric($field))
+ {
+ $sql .= "\n\t$attributes";
+ }
+ else
+ {
+ $attributes = array_change_key_case($attributes, CASE_UPPER);
+
+ $sql .= "\n\t".$this->db->_protect_identifiers($field);
+
+ $sql .= ' '.$attributes['TYPE'];
+
+ if (array_key_exists('CONSTRAINT', $attributes))
+ {
+ $sql .= '('.$attributes['CONSTRAINT'].')';
+ }
+
+ if (array_key_exists('UNSIGNED', $attributes) && $attributes['UNSIGNED'] === TRUE)
+ {
+ $sql .= ' UNSIGNED';
+ }
+
+ if (array_key_exists('DEFAULT', $attributes))
+ {
+ $sql .= ' DEFAULT \''.$attributes['DEFAULT'].'\'';
+ }
+
+ if (array_key_exists('NULL', $attributes) && $attributes['NULL'] === TRUE)
+ {
+ $sql .= ' NULL';
+ }
+ else
+ {
+ $sql .= ' NOT NULL';
+ }
+
+ if (array_key_exists('AUTO_INCREMENT', $attributes) && $attributes['AUTO_INCREMENT'] === TRUE)
+ {
+ $sql .= ' AUTO_INCREMENT';
+ }
+ }
+
+ // don't add a comma on the end of the last field
+ if (++$current_field_count < count($fields))
+ {
+ $sql .= ',';
+ }
+ }
+
+ if (count($primary_keys) > 0)
+ {
+ $primary_keys = $this->db->_protect_identifiers($primary_keys);
+ $sql .= ",\n\tPRIMARY KEY (" . implode(', ', $primary_keys) . ")";
+ }
+
+ if (is_array($keys) && count($keys) > 0)
+ {
+ foreach ($keys as $key)
+ {
+ if (is_array($key))
+ {
+ $key = $this->db->_protect_identifiers($key);
+ }
+ else
+ {
+ $key = array($this->db->_protect_identifiers($key));
+ }
+
+ $sql .= ",\n\tFOREIGN KEY (" . implode(', ', $key) . ")";
+ }
+ }
+
+ $sql .= "\n)";
+
+ return $sql;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Alter table query
+ *
+ * Generates a platform-specific query so that a table can be altered
+ * Called by add_column(), drop_column(), and column_alter(),
+ *
+ * @access private
+ * @param string the ALTER type (ADD, DROP, CHANGE)
+ * @param string the column name
+ * @param string the table name
+ * @param string the column definition
+ * @param string the default value
+ * @param boolean should 'NOT NULL' be added
+ * @param string the field after which we should add the new field
+ * @return object
+ */
+ function _alter_table($alter_type, $table, $column_name, $column_definition = '', $default_value = '', $null = '', $after_field = '')
+ {
+ $sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table)." $alter_type ".$this->db->_protect_identifiers($column_name);
+
+ // DROP has everything it needs now.
+ if ($alter_type == 'DROP')
+ {
+ return $sql;
+ }
+
+ $sql .= " $column_definition";
+
+ if ($default_value != '')
+ {
+ $sql .= " DEFAULT \"$default_value\"";
+ }
+
+ if ($null === NULL)
+ {
+ $sql .= ' NULL';
+ }
+ else
+ {
+ $sql .= ' NOT NULL';
+ }
+
+ if ($after_field != '')
+ {
+ $sql .= ' AFTER ' . $this->db->_protect_identifiers($after_field);
+ }
+
+ return $sql;
+
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Rename a table
+ *
+ * Generates a platform-specific query so that a table can be renamed
+ *
+ * @access private
+ * @param string the old table name
+ * @param string the new table name
+ * @return string
+ */
+ function _rename_table($table_name, $new_table_name)
+ {
+ // I think this syntax will work, but can find little documentation on renaming tables in MSSQL
+ $sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table_name)." RENAME TO ".$this->db->_protect_identifiers($new_table_name);
+ return $sql;
+ }
+
+}
+
+/* End of file mssql_forge.php */
+/* Location: ./system/database/drivers/mssql/mssql_forge.php */ \ No newline at end of file
diff --git a/system/database/drivers/sqlsrv/sqlsrv_result.php b/system/database/drivers/sqlsrv/sqlsrv_result.php
new file mode 100644
index 000000000..bf0abd1c6
--- /dev/null
+++ b/system/database/drivers/sqlsrv/sqlsrv_result.php
@@ -0,0 +1,169 @@
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * @package CodeIgniter
+ * @author ExpressionEngine Dev Team
+ * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
+ * @license http://codeigniter.com/user_guide/license.html
+ * @link http://codeigniter.com
+ * @since Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * SQLSRV Result Class
+ *
+ * This class extends the parent result class: CI_DB_result
+ *
+ * @category Database
+ * @author ExpressionEngine Dev Team
+ * @link http://codeigniter.com/user_guide/database/
+ */
+class CI_DB_sqlsrv_result extends CI_DB_result {
+
+ /**
+ * Number of rows in the result set
+ *
+ * @access public
+ * @return integer
+ */
+ function num_rows()
+ {
+ return @sqlsrv_num_rows($this->result_id);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Number of fields in the result set
+ *
+ * @access public
+ * @return integer
+ */
+ function num_fields()
+ {
+ return @sqlsrv_num_fields($this->result_id);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Fetch Field Names
+ *
+ * Generates an array of column names
+ *
+ * @access public
+ * @return array
+ */
+ function list_fields()
+ {
+ $field_names = array();
+ foreach(sqlsrv_field_metadata($this->result_id) as $offset => $field)
+ {
+ $field_names[] = $field['Name'];
+ }
+
+ return $field_names;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Field data
+ *
+ * Generates an array of objects containing field meta-data
+ *
+ * @access public
+ * @return array
+ */
+ function field_data()
+ {
+ $retval = array();
+ foreach(sqlsrv_field_metadata($this->result_id) as $offset => $field)
+ {
+ $F = new stdClass();
+ $F->name = $field['Name'];
+ $F->type = $field['Type'];
+ $F->max_length = $field['Size'];
+ $F->primary_key = 0;
+ $F->default = '';
+
+ $retval[] = $F;
+ }
+
+ return $retval;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Free the result
+ *
+ * @return null
+ */
+ function free_result()
+ {
+ if (is_resource($this->result_id))
+ {
+ sqlsrv_free_stmt($this->result_id);
+ $this->result_id = FALSE;
+ }
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Data Seek
+ *
+ * Moves the internal pointer to the desired offset. We call
+ * this internally before fetching results to make sure the
+ * result set starts at zero
+ *
+ * @access private
+ * @return array
+ */
+ function _data_seek($n = 0)
+ {
+ // Not implemented
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Result - associative array
+ *
+ * Returns the result set as an array
+ *
+ * @access private
+ * @return array
+ */
+ function _fetch_assoc()
+ {
+ return sqlsrv_fetch_array($this->result_id, SQLSRV_FETCH_ASSOC);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Result - object
+ *
+ * Returns the result set as an object
+ *
+ * @access private
+ * @return object
+ */
+ function _fetch_object()
+ {
+ return sqlsrv_fetch_object($this->result_id);
+ }
+
+}
+
+
+/* End of file mssql_result.php */
+/* Location: ./system/database/drivers/mssql/mssql_result.php */ \ No newline at end of file
diff --git a/system/database/drivers/sqlsrv/sqlsrv_utility.php b/system/database/drivers/sqlsrv/sqlsrv_utility.php
new file mode 100644
index 000000000..13a1850c4
--- /dev/null
+++ b/system/database/drivers/sqlsrv/sqlsrv_utility.php
@@ -0,0 +1,88 @@
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * @package CodeIgniter
+ * @author ExpressionEngine Dev Team
+ * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
+ * @license http://codeigniter.com/user_guide/license.html
+ * @link http://codeigniter.com
+ * @since Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * SQLSRV Utility Class
+ *
+ * @category Database
+ * @author ExpressionEngine Dev Team
+ * @link http://codeigniter.com/user_guide/database/
+ */
+class CI_DB_sqlsrv_utility extends CI_DB_utility {
+
+ /**
+ * List databases
+ *
+ * @access private
+ * @return bool
+ */
+ function _list_databases()
+ {
+ return "EXEC sp_helpdb"; // Can also be: EXEC sp_databases
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Optimize table query
+ *
+ * Generates a platform-specific query so that a table can be optimized
+ *
+ * @access private
+ * @param string the table name
+ * @return object
+ */
+ function _optimize_table($table)
+ {
+ return FALSE; // Is this supported in MS SQL?
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Repair table query
+ *
+ * Generates a platform-specific query so that a table can be repaired
+ *
+ * @access private
+ * @param string the table name
+ * @return object
+ */
+ function _repair_table($table)
+ {
+ return FALSE; // Is this supported in MS SQL?
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * MSSQL Export
+ *
+ * @access private
+ * @param array Preferences
+ * @return mixed
+ */
+ function _backup($params = array())
+ {
+ // Currently unsupported
+ return $this->db->display_error('db_unsuported_feature');
+ }
+
+}
+
+/* End of file mssql_utility.php */
+/* Location: ./system/database/drivers/mssql/mssql_utility.php */ \ No newline at end of file