commitall
This commit is contained in:
Sampanna Rimal
205
hostel/system/database/drivers/postgre/postgre_forge.php
Normal file
205
hostel/system/database/drivers/postgre/postgre_forge.php
Normal file
@ -0,0 +1,205 @@
|
||||
<?php
|
||||
/**
|
||||
* CodeIgniter
|
||||
*
|
||||
* An open source application development framework for PHP
|
||||
*
|
||||
* This content is released under the MIT License (MIT)
|
||||
*
|
||||
* Copyright (c) 2014 - 2019, British Columbia Institute of Technology
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*
|
||||
* @package CodeIgniter
|
||||
* @author EllisLab Dev Team
|
||||
* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
|
||||
* @copyright Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
|
||||
* @license https://opensource.org/licenses/MIT MIT License
|
||||
* @link https://codeigniter.com
|
||||
* @since Version 1.3.0
|
||||
* @filesource
|
||||
*/
|
||||
defined('BASEPATH') OR exit('No direct script access allowed');
|
||||
|
||||
/**
|
||||
* Postgre Forge Class
|
||||
*
|
||||
* @package CodeIgniter
|
||||
* @subpackage Drivers
|
||||
* @category Database
|
||||
* @author EllisLab Dev Team
|
||||
* @link https://codeigniter.com/user_guide/database/
|
||||
*/
|
||||
class CI_DB_postgre_forge extends CI_DB_forge {
|
||||
|
||||
/**
|
||||
* UNSIGNED support
|
||||
*
|
||||
* @var array
|
||||
*/
|
||||
protected $_unsigned = array(
|
||||
'INT2' => 'INTEGER',
|
||||
'SMALLINT' => 'INTEGER',
|
||||
'INT' => 'BIGINT',
|
||||
'INT4' => 'BIGINT',
|
||||
'INTEGER' => 'BIGINT',
|
||||
'INT8' => 'NUMERIC',
|
||||
'BIGINT' => 'NUMERIC',
|
||||
'REAL' => 'DOUBLE PRECISION',
|
||||
'FLOAT' => 'DOUBLE PRECISION'
|
||||
);
|
||||
|
||||
/**
|
||||
* NULL value representation in CREATE/ALTER TABLE statements
|
||||
*
|
||||
* @var string
|
||||
*/
|
||||
protected $_null = 'NULL';
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Class constructor
|
||||
*
|
||||
* @param object &$db Database object
|
||||
* @return void
|
||||
*/
|
||||
public function __construct(&$db)
|
||||
{
|
||||
parent::__construct($db);
|
||||
|
||||
if (version_compare($this->db->version(), '9.0', '>'))
|
||||
{
|
||||
$this->create_table_if = 'CREATE TABLE IF NOT EXISTS';
|
||||
}
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* ALTER TABLE
|
||||
*
|
||||
* @param string $alter_type ALTER type
|
||||
* @param string $table Table name
|
||||
* @param mixed $field Column definition
|
||||
* @return string|string[]
|
||||
*/
|
||||
protected function _alter_table($alter_type, $table, $field)
|
||||
{
|
||||
if (in_array($alter_type, array('DROP', 'ADD'), TRUE))
|
||||
{
|
||||
return parent::_alter_table($alter_type, $table, $field);
|
||||
}
|
||||
|
||||
$sql = 'ALTER TABLE '.$this->db->escape_identifiers($table);
|
||||
$sqls = array();
|
||||
for ($i = 0, $c = count($field); $i < $c; $i++)
|
||||
{
|
||||
if ($field[$i]['_literal'] !== FALSE)
|
||||
{
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
if (version_compare($this->db->version(), '8', '>=') && isset($field[$i]['type']))
|
||||
{
|
||||
$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
|
||||
.' TYPE '.$field[$i]['type'].$field[$i]['length'];
|
||||
}
|
||||
|
||||
if ( ! empty($field[$i]['default']))
|
||||
{
|
||||
$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
|
||||
.' SET '.$field[$i]['default'];
|
||||
}
|
||||
|
||||
if (isset($field[$i]['null']))
|
||||
{
|
||||
$sqls[] = $sql.' ALTER COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
|
||||
.(trim($field[$i]['null']) === $this->_null ? ' DROP NOT NULL' : ' SET NOT NULL');
|
||||
}
|
||||
|
||||
if ( ! empty($field[$i]['new_name']))
|
||||
{
|
||||
$sqls[] = $sql.' RENAME COLUMN '.$this->db->escape_identifiers($field[$i]['name'])
|
||||
.' TO '.$this->db->escape_identifiers($field[$i]['new_name']);
|
||||
}
|
||||
|
||||
if ( ! empty($field[$i]['comment']))
|
||||
{
|
||||
$sqls[] = 'COMMENT ON COLUMN '
|
||||
.$this->db->escape_identifiers($table).'.'.$this->db->escape_identifiers($field[$i]['name'])
|
||||
.' IS '.$field[$i]['comment'];
|
||||
}
|
||||
}
|
||||
|
||||
return $sqls;
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Field attribute TYPE
|
||||
*
|
||||
* Performs a data type mapping between different databases.
|
||||
*
|
||||
* @param array &$attributes
|
||||
* @return void
|
||||
*/
|
||||
protected function _attr_type(&$attributes)
|
||||
{
|
||||
// Reset field lengths for data types that don't support it
|
||||
if (isset($attributes['CONSTRAINT']) && stripos($attributes['TYPE'], 'int') !== FALSE)
|
||||
{
|
||||
$attributes['CONSTRAINT'] = NULL;
|
||||
}
|
||||
|
||||
switch (strtoupper($attributes['TYPE']))
|
||||
{
|
||||
case 'TINYINT':
|
||||
$attributes['TYPE'] = 'SMALLINT';
|
||||
$attributes['UNSIGNED'] = FALSE;
|
||||
return;
|
||||
case 'MEDIUMINT':
|
||||
$attributes['TYPE'] = 'INTEGER';
|
||||
$attributes['UNSIGNED'] = FALSE;
|
||||
return;
|
||||
default: return;
|
||||
}
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Field attribute AUTO_INCREMENT
|
||||
*
|
||||
* @param array &$attributes
|
||||
* @param array &$field
|
||||
* @return void
|
||||
*/
|
||||
protected function _attr_auto_increment(&$attributes, &$field)
|
||||
{
|
||||
if ( ! empty($attributes['AUTO_INCREMENT']) && $attributes['AUTO_INCREMENT'] === TRUE)
|
||||
{
|
||||
$field['type'] = ($field['type'] === 'NUMERIC')
|
||||
? 'BIGSERIAL'
|
||||
: 'SERIAL';
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user