Merged recent changes and tweaked multi-env changes.

35 files changed, 244 insertions, 61 deletions

diff --git a/system/database/DB.php b/system/database/DB.php
index 739e9d08e..513e5aefd 100644
--- a/system/database/DB.php
+++ b/system/database/DB.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/DB_active_rec.php b/system/database/DB_active_rec.php
index dd46981b1..ce9d1c1af 100644
--- a/system/database/DB_active_rec.php
+++ b/system/database/DB_active_rec.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/DB_cache.php b/system/database/DB_cache.php
index 6042e0673..3bf065ca5 100644
--- a/system/database/DB_cache.php
+++ b/system/database/DB_cache.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/DB_driver.php b/system/database/DB_driver.php
index 7fe5695b0..2d8f592e3 100644
--- a/system/database/DB_driver.php
+++ b/system/database/DB_driver.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/DB_forge.php b/system/database/DB_forge.php
index ce505f4ee..27f2c372d 100644
--- a/system/database/DB_forge.php
+++ b/system/database/DB_forge.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/DB_result.php b/system/database/DB_result.php
index 05f06af66..fb4268c21 100644
--- a/system/database/DB_result.php
+++ b/system/database/DB_result.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -28,13 +28,14 @@
  */
 class CI_DB_result {
 
-	var $conn_id		= NULL;
-	var $result_id		= NULL;
-	var $result_array	= array();
-	var $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;
 
 
 	/**
@@ -46,11 +47,48 @@ class CI_DB_result {
 	 */
 	function result($type = 'object')
 	{
-		return ($type == 'object') ? $this->result_object() : $this->result_array();
+        if ($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);
+        $result_object = array();
+		while ($row = $this->_fetch_object())
+        {
+            $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;
+    }
+
 	/**
 	 * Query result.  "object" version.
 	 *
@@ -142,7 +180,9 @@ class CI_DB_result {
 			$n = 0;
 		}
 
-		return ($type == 'object') ? $this->row_object($n) : $this->row_array($n);
+        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);
 	}
 
 	// --------------------------------------------------------------------
@@ -179,7 +219,30 @@ class CI_DB_result {
 
 	// --------------------------------------------------------------------
 
-	/**
+    /**
+	 * Returns a single result row - custom object version
+	 *
+	 * @access	public
+	 * @return	object
+	 */
+	function custom_row_object($n, $type)
+	{
+		$result = $this->custom_result_object($type);
+
+		if (count($result) == 0)
+		{
+			return $result;
+		}
+
+		if ($n != $this->current_row AND isset($result[$n]))
+		{
+			$this->current_row = $n;
+		}
+
+		return $result[$this->current_row];
+	}
+
+    /**
 	 * Returns a single result row - object version
 	 *
 	 * @access	public
@@ -339,4 +402,4 @@ class CI_DB_result {
 // END DB_result class
 
 /* End of file DB_result.php */
-/* Location: ./system/database/DB_result.php */
\ No newline at end of file
+/* Location: ./system/database/DB_result.php */
diff --git a/system/database/DB_utility.php b/system/database/DB_utility.php
index c4d537a3b..a5f174f0a 100644
--- a/system/database/DB_utility.php
+++ b/system/database/DB_utility.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mssql/mssql_driver.php b/system/database/drivers/mssql/mssql_driver.php
index eade10ee8..5a69132cd 100644
--- a/system/database/drivers/mssql/mssql_driver.php
+++ b/system/database/drivers/mssql/mssql_driver.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mssql/mssql_forge.php b/system/database/drivers/mssql/mssql_forge.php
index 6b02e1eb2..70b20ecf8 100644
--- a/system/database/drivers/mssql/mssql_forge.php
+++ b/system/database/drivers/mssql/mssql_forge.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mssql/mssql_result.php b/system/database/drivers/mssql/mssql_result.php
index c0a20dbde..2897ca5a5 100644
--- a/system/database/drivers/mssql/mssql_result.php
+++ b/system/database/drivers/mssql/mssql_result.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mssql/mssql_utility.php b/system/database/drivers/mssql/mssql_utility.php
index b867dd7b1..48ecbc72a 100644
--- a/system/database/drivers/mssql/mssql_utility.php
+++ b/system/database/drivers/mssql/mssql_utility.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mysql/mysql_driver.php b/system/database/drivers/mysql/mysql_driver.php
index f27a1eef6..df18c912e 100644
--- a/system/database/drivers/mysql/mysql_driver.php
+++ b/system/database/drivers/mysql/mysql_driver.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mysql/mysql_forge.php b/system/database/drivers/mysql/mysql_forge.php
index 35845d6af..529ec980d 100644
--- a/system/database/drivers/mysql/mysql_forge.php
+++ b/system/database/drivers/mysql/mysql_forge.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mysql/mysql_result.php b/system/database/drivers/mysql/mysql_result.php
index c3aa4ccd7..507389603 100644
--- a/system/database/drivers/mysql/mysql_result.php
+++ b/system/database/drivers/mysql/mysql_result.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mysql/mysql_utility.php b/system/database/drivers/mysql/mysql_utility.php
index 1259fee6f..e9747c540 100644
--- a/system/database/drivers/mysql/mysql_utility.php
+++ b/system/database/drivers/mysql/mysql_utility.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mysqli/mysqli_driver.php b/system/database/drivers/mysqli/mysqli_driver.php
index b50fe5f77..8942100d4 100644
--- a/system/database/drivers/mysqli/mysqli_driver.php
+++ b/system/database/drivers/mysqli/mysqli_driver.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -539,6 +539,24 @@ class CI_DB_mysqli_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
@@ -571,6 +589,57 @@ class CI_DB_mysqli_driver extends CI_DB {
 		return $sql;
 	}
 
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update_Batch statement
+	 *
+	 * Generates a platform-specific batch update string from the supplied data
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	array	the update data
+	 * @param	array	the where clause
+	 * @return	string
+	 */
+	function _update_batch($table, $values, $index, $where = NULL)
+	{
+		$ids = array();
+		$where = ($where != '' AND count($where) >=1) ? implode(" ", $where).' AND ' : '';
+
+		foreach($values as $key => $val)
+		{
+			$ids[] = $val[$index];
+
+			foreach(array_keys($val) as $field)
+			{
+				if ($field != $index)
+				{
+					$final[$field][] =  'WHEN '.$index.' = '.$val[$index].' THEN '.$val[$field];
+				}
+			}
+		}
+
+		$sql = "UPDATE ".$table." SET ";
+		$cases = '';
+
+		foreach($final as $k => $v)
+		{
+			$cases .= $k.' = CASE '."\n";
+			foreach ($v as $row)
+			{
+				$cases .= $row."\n";
+			}
+
+			$cases .= 'ELSE '.$k.' END, ';
+		}
+
+		$sql .= substr($cases, 0, -2);
+
+		$sql .= ' WHERE '.$where.$index.' IN ('.implode(',', $ids).')';
+
+		return $sql;
+	}
 
 	// --------------------------------------------------------------------
 
diff --git a/system/database/drivers/mysqli/mysqli_forge.php b/system/database/drivers/mysqli/mysqli_forge.php
index 5d5b78089..d5097335e 100644
--- a/system/database/drivers/mysqli/mysqli_forge.php
+++ b/system/database/drivers/mysqli/mysqli_forge.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mysqli/mysqli_result.php b/system/database/drivers/mysqli/mysqli_result.php
index 16f57c079..c4d8f5d58 100644
--- a/system/database/drivers/mysqli/mysqli_result.php
+++ b/system/database/drivers/mysqli/mysqli_result.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/mysqli/mysqli_utility.php b/system/database/drivers/mysqli/mysqli_utility.php
index 84ff0daf4..e17889b8c 100644
--- a/system/database/drivers/mysqli/mysqli_utility.php
+++ b/system/database/drivers/mysqli/mysqli_utility.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/oci8/oci8_driver.php b/system/database/drivers/oci8/oci8_driver.php
index 44d5dec7e..64f53cc3f 100644
--- a/system/database/drivers/oci8/oci8_driver.php
+++ b/system/database/drivers/oci8/oci8_driver.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright   Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright   Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/oci8/oci8_forge.php b/system/database/drivers/oci8/oci8_forge.php
index 4bcb081b2..3cd17585a 100644
--- a/system/database/drivers/oci8/oci8_forge.php
+++ b/system/database/drivers/oci8/oci8_forge.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/oci8/oci8_result.php b/system/database/drivers/oci8/oci8_result.php
index 058524f4c..88531b436 100644
--- a/system/database/drivers/oci8/oci8_result.php
+++ b/system/database/drivers/oci8/oci8_result.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright   Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright   Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/oci8/oci8_utility.php b/system/database/drivers/oci8/oci8_utility.php
index 48d4acec8..854b467e1 100644
--- a/system/database/drivers/oci8/oci8_utility.php
+++ b/system/database/drivers/oci8/oci8_utility.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/odbc/odbc_driver.php b/system/database/drivers/odbc/odbc_driver.php
index af90f0c7a..c8e03c356 100644
--- a/system/database/drivers/odbc/odbc_driver.php
+++ b/system/database/drivers/odbc/odbc_driver.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/odbc/odbc_forge.php b/system/database/drivers/odbc/odbc_forge.php
index 602016ad4..3ec86b4e9 100644
--- a/system/database/drivers/odbc/odbc_forge.php
+++ b/system/database/drivers/odbc/odbc_forge.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/odbc/odbc_result.php b/system/database/drivers/odbc/odbc_result.php
index b673464b7..a81a2b8b7 100644
--- a/system/database/drivers/odbc/odbc_result.php
+++ b/system/database/drivers/odbc/odbc_result.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/odbc/odbc_utility.php b/system/database/drivers/odbc/odbc_utility.php
index 9f9ef5a3d..d335bed99 100644
--- a/system/database/drivers/odbc/odbc_utility.php
+++ b/system/database/drivers/odbc/odbc_utility.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php
index b61a9d75b..0bb7974d8 100644
--- a/system/database/drivers/postgre/postgre_driver.php
+++ b/system/database/drivers/postgre/postgre_driver.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/postgre/postgre_forge.php b/system/database/drivers/postgre/postgre_forge.php
index 41858f36e..91a1c6861 100644
--- a/system/database/drivers/postgre/postgre_forge.php
+++ b/system/database/drivers/postgre/postgre_forge.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
@@ -69,7 +69,10 @@ class CI_DB_postgre_forge extends CI_DB_forge {
 
 		if ($if_not_exists === TRUE)
 		{
-			$sql .= 'IF NOT EXISTS ';
+			if ($this->db->table_exists($table))
+			{
+				return "SELECT * FROM $table"; // Needs to return innocous but valid SQL statement
+			}
 		}
 
 		$sql .= $this->db->_escape_identifiers($table)." (";
@@ -90,16 +93,55 @@ class CI_DB_postgre_forge extends CI_DB_forge {
 
 				$sql .= "\n\t".$this->db->_protect_identifiers($field);
 
-				$sql .=  ' '.$attributes['TYPE'];
+				$is_unsigned = (array_key_exists('UNSIGNED', $attributes) && $attributes['UNSIGNED'] === TRUE);
 
-				if (array_key_exists('CONSTRAINT', $attributes))
+				// Convert datatypes to be PostgreSQL-compatible
+				switch (strtoupper($attributes['TYPE']))
 				{
-					$sql .= '('.$attributes['CONSTRAINT'].')';
+					case 'TINYINT':
+						$attributes['TYPE'] = 'SMALLINT';
+						break;
+					case 'SMALLINT':
+						$attributes['TYPE'] = ($is_unsigned) ? 'INTEGER' : 'SMALLINT';
+						break;
+					case 'MEDIUMINT':
+						$attributes['TYPE'] = 'INTEGER';
+						break;
+					case 'INT':
+						$attributes['TYPE'] = ($is_unsigned) ? 'BIGINT' : 'INTEGER';
+						break;
+					case 'BIGINT':
+						$attributes['TYPE'] = ($is_unsigned) ? 'NUMERIC' : 'BIGINT';
+						break;
+					case 'DOUBLE':
+						$attributes['TYPE'] = 'DOUBLE PRECISION';
+						break;
+					case 'DATETIME':
+						$attributes['TYPE'] = 'TIMESTAMP';
+						break;
+					case 'LONGTEXT':
+						$attributes['TYPE'] = 'TEXT';
+						break;
+					case 'BLOB':
+						$attributes['TYPE'] = 'BYTEA';
+						break;
 				}
 
-				if (array_key_exists('UNSIGNED', $attributes) && $attributes['UNSIGNED'] === TRUE)
+				// If this is an auto-incrementing primary key, use the serial data type instead
+				if (in_array($field, $primary_keys) && array_key_exists('AUTO_INCREMENT', $attributes) 
+					&& $attributes['AUTO_INCREMENT'] === TRUE)
+				{
+					$sql .= ' SERIAL';
+				}
+				else
 				{
-					$sql .= ' UNSIGNED';
+					$sql .=  ' '.$attributes['TYPE'];
+				}
+
+				// Modified to prevent constraints with integer data types
+				if (array_key_exists('CONSTRAINT', $attributes) && strpos($attributes['TYPE'], 'INT') === false)
+				{
+					$sql .= '('.$attributes['CONSTRAINT'].')';
 				}
 
 				if (array_key_exists('DEFAULT', $attributes))
@@ -116,9 +158,10 @@ class CI_DB_postgre_forge extends CI_DB_forge {
 					$sql .= ' NOT NULL';
 				}
 
-				if (array_key_exists('AUTO_INCREMENT', $attributes) && $attributes['AUTO_INCREMENT'] === TRUE)
+				// Added new attribute to create unqite fields. Also works with MySQL
+				if (array_key_exists('UNIQUE', $attributes) && $attributes['UNIQUE'] === TRUE)
 				{
-					$sql .= ' AUTO_INCREMENT';
+					$sql .= ' UNIQUE';
 				}
 			}
 
@@ -131,10 +174,17 @@ class CI_DB_postgre_forge extends CI_DB_forge {
 
 		if (count($primary_keys) > 0)
 		{
-			$primary_keys = $this->db->_protect_identifiers($primary_keys);
+			// Something seems to break when passing an array to _protect_identifiers()
+			foreach ($primary_keys as $index => $key)
+			{
+				$primary_keys[$index] = $this->db->_protect_identifiers($key);
+			}
+
 			$sql .= ",\n\tPRIMARY KEY (" . implode(', ', $primary_keys) . ")";
 		}
 
+		$sql .= "\n);";
+
 		if (is_array($keys) && count($keys) > 0)
 		{
 			foreach ($keys as $key)
@@ -148,12 +198,13 @@ class CI_DB_postgre_forge extends CI_DB_forge {
 					$key = array($this->db->_protect_identifiers($key));
 				}
 
-				$sql .= ",\n\tFOREIGN KEY (" . implode(', ', $key) . ")";
+				foreach ($key as $field)
+				{
+					$sql .= "CREATE INDEX " . $table . "_" . str_replace(array('"', "'"), '', $field) . "_index ON $table ($field); ";
+				}
 			}
 		}
 
-		$sql .= "\n);";
-
 		return $sql;
 	}
 
@@ -162,12 +213,12 @@ class CI_DB_postgre_forge extends CI_DB_forge {
 	/**
 	 * Drop Table
 	 *
-	 * @access	private
-	 * @return	bool
+	 * @access    private
+	 * @return    bool
 	 */
 	function _drop_table($table)
 	{
-		return "DROP TABLE ".$this->db->_escape_identifiers($table)." CASCADE";
+		return "DROP TABLE IF EXISTS ".$this->db->_escape_identifiers($table)." CASCADE";
 	}
 
 	// --------------------------------------------------------------------
diff --git a/system/database/drivers/postgre/postgre_result.php b/system/database/drivers/postgre/postgre_result.php
index 126631201..e9a1d1607 100644
--- a/system/database/drivers/postgre/postgre_result.php
+++ b/system/database/drivers/postgre/postgre_result.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/postgre/postgre_utility.php b/system/database/drivers/postgre/postgre_utility.php
index f04c7f083..741c52ea8 100644
--- a/system/database/drivers/postgre/postgre_utility.php
+++ b/system/database/drivers/postgre/postgre_utility.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/sqlite/sqlite_driver.php b/system/database/drivers/sqlite/sqlite_driver.php
index d6c6897c6..5bfc1f558 100644
--- a/system/database/drivers/sqlite/sqlite_driver.php
+++ b/system/database/drivers/sqlite/sqlite_driver.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/sqlite/sqlite_forge.php b/system/database/drivers/sqlite/sqlite_forge.php
index 0aa5d382a..56904082e 100644
--- a/system/database/drivers/sqlite/sqlite_forge.php
+++ b/system/database/drivers/sqlite/sqlite_forge.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/sqlite/sqlite_result.php b/system/database/drivers/sqlite/sqlite_result.php
index 9a86aa99c..7bd30db7c 100644
--- a/system/database/drivers/sqlite/sqlite_result.php
+++ b/system/database/drivers/sqlite/sqlite_result.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0
diff --git a/system/database/drivers/sqlite/sqlite_utility.php b/system/database/drivers/sqlite/sqlite_utility.php
index b76c1b366..508023e2f 100644
--- a/system/database/drivers/sqlite/sqlite_utility.php
+++ b/system/database/drivers/sqlite/sqlite_utility.php
@@ -6,7 +6,7 @@
  *
  * @package		CodeIgniter
  * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
+ * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
  * @license		http://codeigniter.com/user_guide/license.html
  * @link		http://codeigniter.com
  * @since		Version 1.0