Many new Active Record functions, and another whack of stuff

3 files changed, 375 insertions, 50 deletions

diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php
index 88f08b2d7..63a72f5d3 100644
--- a/system/database/drivers/postgre/postgre_driver.php
+++ b/system/database/drivers/postgre/postgre_driver.php
@@ -35,7 +35,7 @@ class CI_DB_postgre_driver extends CI_DB {
 	 * 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 numrows ";

+	var $_count_string = "SELECT COUNT(*) AS ";

 	var $_random_keyword = ' RANDOM()'; // database specific random keyword

 

 	/**

@@ -83,6 +83,22 @@ class CI_DB_postgre_driver extends CI_DB {
 	// --------------------------------------------------------------------

 

 	/**

+	 * 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;

+	}

+

+	// --------------------------------------------------------------------

+	

+	/**

 	 * Version number query string

 	 *

 	 * @access	public

@@ -305,11 +321,19 @@ class CI_DB_postgre_driver extends CI_DB {
 	 * Generates a platform-specific query string so that the table names can be fetched

 	 *

 	 * @access	private

+	 * @param	boolean

 	 * @return	string

 	 */

-	function _list_tables()

+	function _list_tables($prefix_limit = FALSE)

 	{	

-		return "SELECT table_name FROM information_schema.tables WHERE table_schema = 'public'";	

+		$sql = "SELECT table_name FROM information_schema.tables WHERE table_schema = 'public'";	

+		

+		if ($prefix_limit !== FALSE AND $this->dbprefix != '')

+		{

+			$sql .= " AND table_name LIKE '".$this->dbprefix."%'";

+		}

+		

+		return $sql;

 	}

 	

 	// --------------------------------------------------------------------

@@ -395,6 +419,58 @@ class CI_DB_postgre_driver extends CI_DB {
 	// --------------------------------------------------------------------

 

 	/**

+	 * Protect Identifiers

+	 *

+	 * This function adds backticks if appropriate based on db type

+	 *

+	 * @access	private

+	 * @param	mixed	the item to escape

+	 * @param	boolean	only affect the first word

+	 * @return	mixed	the item with backticks

+	 */

+	function _protect_identifiers($item, $first_word_only = FALSE)

+	{

+		if (is_array($item))

+		{

+			$escaped_array = array();

+

+			foreach($item as $k=>$v)

+			{

+				$escaped_array[$this->_protect_identifiers($k)] = $this->_protect_identifiers($v, $first_word_only);

+			}

+

+			return $escaped_array;

+		}	

+

+		// This function may get "item1 item2" as a string, and so

+		// we may need ""item1" "item2"" and not ""item1 item2""

+		if (strpos($item, ' ') !== FALSE)

+		{

+			// This function may get "field >= 1", and need it to return ""field" >= 1"

+			if ($first_word_only === TRUE)

+			{

+				return '"'.preg_replace('/ /', '" ', $item, 1);

+			}

+

+			$item = preg_replace('/(^|\s|\()([\w\d\-\_]+?)(\s|\)|$)/iS', '$1"$2"$3', $item);

+		}

+

+		$exceptions = array('AS', '/', '-', '%', '+', '*');

+		

+		foreach ($exceptions as $exception)

+		{

+			if (stristr($item, " "{$exception}" ") !== FALSE)

+			{

+				$item = preg_replace('/ "('.preg_quote($exception).')" /i', ' $1 ', $item);

+			}

+		}

+		

+		return $item;

+	}

+			

+	// --------------------------------------------------------------------

+

+	/**

 	 * Insert statement

 	 *

 	 * Generates a platform-specific insert string from the supplied data

@@ -421,9 +497,11 @@ class CI_DB_postgre_driver extends CI_DB {
 	 * @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, $limit = FALSE)

+	function _update($table, $values, $where, $orderby = array(), $limit = FALSE)

 	{

 		foreach($values as $key => $val)

 		{

@@ -431,8 +509,29 @@ class CI_DB_postgre_driver extends CI_DB {
 		}

 		

 		$limit = (!$limit) ? '' : ' LIMIT '.$limit;

+		

+		$orderby = (count($orderby) >= 1)?' ORDER BY '.implode(", ", $orderby):'';

 	

-		return "UPDATE ".$this->_escape_table($table)." SET ".implode(', ', $valstr)." WHERE ".implode(" ", $where).$limit;

+		return "UPDATE ".$this->_escape_table($table)." SET ".implode(', ', $valstr)." WHERE ".implode(" ", $where).$orderby.$limit;

+	}

+

+	

+	// --------------------------------------------------------------------

+

+	/**

+	 * 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 ".$this->_escape_table($table);

 	}

 	

 	// --------------------------------------------------------------------

@@ -445,17 +544,31 @@ class CI_DB_postgre_driver extends CI_DB {
 	 * @access	public

 	 * @param	string	the table name

 	 * @param	array	the where clause

+	 * @param	string	the limit clause

 	 * @return	string

 	 */	

-	function _delete($table, $where, $limit = FALSE)

+	function _delete($table, $where = array(), $like = array(), $limit = FALSE)

 	{

+		$conditions = '';

+

+		if (count($where) > 0 || count($like) > 0)

+		{

+			$conditions = "\nWHERE ";

+			$conditions .= implode("\n", $this->ar_where);

+

+			if (count($where) > 0 && count($like) > 0)

+			{

+				$conditions .= " AND ";

+			}

+			$conditions .= implode("\n", $like);

+		}

+

 		$limit = (!$limit) ? '' : ' LIMIT '.$limit;

 	

-		return "DELETE FROM ".$this->_escape_table($table)." WHERE ".implode(" ", $where).$limit;

+		return "DELETE FROM ".$table.$conditions.$limit;

 	}

 

 	// --------------------------------------------------------------------

-

 	/**

 	 * Limit string

 	 *

diff --git a/system/database/drivers/postgre/postgre_forge.php b/system/database/drivers/postgre/postgre_forge.php
new file mode 100644
index 000000000..34bbe88b6
--- /dev/null
+++ b/system/database/drivers/postgre/postgre_forge.php
@@ -0,0 +1,219 @@
+<?php  if (!defined('BASEPATH')) exit('No direct script access allowed');

+/**

+ * CodeIgniter

+ *

+ * An open source application development framework for PHP 4.3.2 or newer

+ *

+ * @package		CodeIgniter

+ * @author		Rick Ellis

+ * @copyright	Copyright (c) 2006, EllisLab, Inc.

+ * @license		http://www.codeigniter.com/user_guide/license.html

+ * @link		http://www.codeigniter.com

+ * @since		Version 1.0

+ * @filesource

+ */

+

+// ------------------------------------------------------------------------

+

+/**

+ * Postgre Forge Class

+ *

+ * @category	Database

+ * @author		Rick Ellis

+ * @link		http://www.codeigniter.com/user_guide/database/

+ */

+class CI_DB_postgre_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;

+	}

+

+	// --------------------------------------------------------------------

+

+	/**

+	 * 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 .= $this->db->_escape_table($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)

+		{

+			$keys = $this->db->_protect_identifiers($keys);

+			foreach ($keys as $key)

+			{

+				$sql .= ",\n\tFOREIGN KEY ($key)";

+			}

+		}

+

+		$sql .= "\n);";

+

+		return $sql;

+	}

+

+	// --------------------------------------------------------------------

+

+	/**

+	 * Drop Table

+	 *

+	 * @access	private

+	 * @return	bool

+	 */

+	function _drop_table($table)

+	{

+		return "DROP TABLE ".$this->db->_escape_table($table)." CASCADE";

+	}

+

+	// --------------------------------------------------------------------

+

+	/**

+	 * 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;

+		

+	}

+

+}

+?>
\ No newline at end of file
diff --git a/system/database/drivers/postgre/postgre_utility.php b/system/database/drivers/postgre/postgre_utility.php
index fa5960e58..a706d9505 100644
--- a/system/database/drivers/postgre/postgre_utility.php
+++ b/system/database/drivers/postgre/postgre_utility.php
@@ -24,35 +24,6 @@
  */

 class CI_DB_postgre_utility extends CI_DB_utility {

 

-	

-	/**

-	 * 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;

-	}

-

-	// --------------------------------------------------------------------

-

 	/**

 	 * List databases

 	 *

@@ -67,19 +38,6 @@ class CI_DB_postgre_utility extends CI_DB_utility {
 	// --------------------------------------------------------------------

 

 	/**

-	 * Drop Table

-	 *

-	 * @access	private

-	 * @return	bool

-	 */

-	function _drop_table($table)

-	{

-		return "DROP TABLE ".$this->db->_escape_table($table)." CASCADE";

-	}

-

-	// --------------------------------------------------------------------

-

-	/**

 	 * Optimize table query

 	 *

 	 * Is table optimization supported in Postgre?

@@ -124,6 +82,41 @@ class CI_DB_postgre_utility extends CI_DB_utility {
 		return $this->db->display_error('db_unsuported_feature');

 	}

 

+	/**

+	 *

+	 * The functions below have been deprecated as of 1.6, and are only here for backwards

+	 * compatibility.  They now reside in dbforge().  The use of dbutils for database manipulation

+	 * is STRONGLY discouraged in favour if using dbforge.

+	 *

+	 */

+

+	/**

+	 * 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;

+	}

+

+

 }

 

 ?>
\ No newline at end of file