commitall
This commit is contained in:
Sampanna Rimal
326
hostel/system/database/drivers/pdo/subdrivers/pdo_oci_driver.php
Normal file
326
hostel/system/database/drivers/pdo/subdrivers/pdo_oci_driver.php
Normal file
@ -0,0 +1,326 @@
|
||||
<?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 3.0.0
|
||||
* @filesource
|
||||
*/
|
||||
defined('BASEPATH') OR exit('No direct script access allowed');
|
||||
|
||||
/**
|
||||
* PDO Oracle Database Adapter Class
|
||||
*
|
||||
* Note: _DB is an extender class that the app controller
|
||||
* creates dynamically based on whether the query builder
|
||||
* class is being used or not.
|
||||
*
|
||||
* @package CodeIgniter
|
||||
* @subpackage Drivers
|
||||
* @category Database
|
||||
* @author EllisLab Dev Team
|
||||
* @link https://codeigniter.com/user_guide/database/
|
||||
*/
|
||||
class CI_DB_pdo_oci_driver extends CI_DB_pdo_driver {
|
||||
|
||||
/**
|
||||
* Sub-driver
|
||||
*
|
||||
* @var string
|
||||
*/
|
||||
public $subdriver = 'oci';
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* List of reserved identifiers
|
||||
*
|
||||
* Identifiers that must NOT be escaped.
|
||||
*
|
||||
* @var string[]
|
||||
*/
|
||||
protected $_reserved_identifiers = array('*', 'rownum');
|
||||
|
||||
/**
|
||||
* ORDER BY random keyword
|
||||
*
|
||||
* @var array
|
||||
*/
|
||||
protected $_random_keyword = array('ASC', 'ASC'); // Currently not supported
|
||||
|
||||
/**
|
||||
* COUNT string
|
||||
*
|
||||
* @used-by CI_DB_driver::count_all()
|
||||
* @used-by CI_DB_query_builder::count_all_results()
|
||||
*
|
||||
* @var string
|
||||
*/
|
||||
protected $_count_string = 'SELECT COUNT(1) AS ';
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Class constructor
|
||||
*
|
||||
* Builds the DSN if not already set.
|
||||
*
|
||||
* @param array $params
|
||||
* @return void
|
||||
*/
|
||||
public function __construct($params)
|
||||
{
|
||||
parent::__construct($params);
|
||||
|
||||
if (empty($this->dsn))
|
||||
{
|
||||
$this->dsn = 'oci:dbname=';
|
||||
|
||||
// Oracle has a slightly different PDO DSN format (Easy Connect),
|
||||
// which also supports pre-defined DSNs.
|
||||
if (empty($this->hostname) && empty($this->port))
|
||||
{
|
||||
$this->dsn .= $this->database;
|
||||
}
|
||||
else
|
||||
{
|
||||
$this->dsn .= '//'.(empty($this->hostname) ? '127.0.0.1' : $this->hostname)
|
||||
.(empty($this->port) ? '' : ':'.$this->port).'/';
|
||||
|
||||
empty($this->database) OR $this->dsn .= $this->database;
|
||||
}
|
||||
|
||||
empty($this->char_set) OR $this->dsn .= ';charset='.$this->char_set;
|
||||
}
|
||||
elseif ( ! empty($this->char_set) && strpos($this->dsn, 'charset=', 4) === FALSE)
|
||||
{
|
||||
$this->dsn .= ';charset='.$this->char_set;
|
||||
}
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Database version number
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
public function version()
|
||||
{
|
||||
if (isset($this->data_cache['version']))
|
||||
{
|
||||
return $this->data_cache['version'];
|
||||
}
|
||||
|
||||
$version_string = parent::version();
|
||||
if (preg_match('#Release\s(?<version>\d+(?:\.\d+)+)#', $version_string, $match))
|
||||
{
|
||||
return $this->data_cache['version'] = $match[1];
|
||||
}
|
||||
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Show table query
|
||||
*
|
||||
* Generates a platform-specific query string so that the table names can be fetched
|
||||
*
|
||||
* @param bool $prefix_limit
|
||||
* @return string
|
||||
*/
|
||||
protected function _list_tables($prefix_limit = FALSE)
|
||||
{
|
||||
$sql = 'SELECT "TABLE_NAME" FROM "ALL_TABLES"';
|
||||
|
||||
if ($prefix_limit === TRUE && $this->dbprefix !== '')
|
||||
{
|
||||
return $sql.' WHERE "TABLE_NAME" LIKE \''.$this->escape_like_str($this->dbprefix)."%' "
|
||||
.sprintf($this->_like_escape_str, $this->_like_escape_chr);
|
||||
}
|
||||
|
||||
return $sql;
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Show column query
|
||||
*
|
||||
* Generates a platform-specific query string so that the column names can be fetched
|
||||
*
|
||||
* @param string $table
|
||||
* @return string
|
||||
*/
|
||||
protected function _list_columns($table = '')
|
||||
{
|
||||
if (strpos($table, '.') !== FALSE)
|
||||
{
|
||||
sscanf($table, '%[^.].%s', $owner, $table);
|
||||
}
|
||||
else
|
||||
{
|
||||
$owner = $this->username;
|
||||
}
|
||||
|
||||
return 'SELECT COLUMN_NAME FROM ALL_TAB_COLUMNS
|
||||
WHERE UPPER(OWNER) = '.$this->escape(strtoupper($owner)).'
|
||||
AND UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Returns an object with field data
|
||||
*
|
||||
* @param string $table
|
||||
* @return array
|
||||
*/
|
||||
public function field_data($table)
|
||||
{
|
||||
if (strpos($table, '.') !== FALSE)
|
||||
{
|
||||
sscanf($table, '%[^.].%s', $owner, $table);
|
||||
}
|
||||
else
|
||||
{
|
||||
$owner = $this->username;
|
||||
}
|
||||
|
||||
$sql = 'SELECT COLUMN_NAME, DATA_TYPE, CHAR_LENGTH, DATA_PRECISION, DATA_LENGTH, DATA_DEFAULT, NULLABLE
|
||||
FROM ALL_TAB_COLUMNS
|
||||
WHERE UPPER(OWNER) = '.$this->escape(strtoupper($owner)).'
|
||||
AND UPPER(TABLE_NAME) = '.$this->escape(strtoupper($table));
|
||||
|
||||
if (($query = $this->query($sql)) === FALSE)
|
||||
{
|
||||
return FALSE;
|
||||
}
|
||||
$query = $query->result_object();
|
||||
|
||||
$retval = array();
|
||||
for ($i = 0, $c = count($query); $i < $c; $i++)
|
||||
{
|
||||
$retval[$i] = new stdClass();
|
||||
$retval[$i]->name = $query[$i]->COLUMN_NAME;
|
||||
$retval[$i]->type = $query[$i]->DATA_TYPE;
|
||||
|
||||
$length = ($query[$i]->CHAR_LENGTH > 0)
|
||||
? $query[$i]->CHAR_LENGTH : $query[$i]->DATA_PRECISION;
|
||||
if ($length === NULL)
|
||||
{
|
||||
$length = $query[$i]->DATA_LENGTH;
|
||||
}
|
||||
$retval[$i]->max_length = $length;
|
||||
|
||||
$default = $query[$i]->DATA_DEFAULT;
|
||||
if ($default === NULL && $query[$i]->NULLABLE === 'N')
|
||||
{
|
||||
$default = '';
|
||||
}
|
||||
$retval[$i]->default = $query[$i]->COLUMN_DEFAULT;
|
||||
}
|
||||
|
||||
return $retval;
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Insert batch statement
|
||||
*
|
||||
* @param string $table Table name
|
||||
* @param array $keys INSERT keys
|
||||
* @param array $values INSERT values
|
||||
* @return string
|
||||
*/
|
||||
protected function _insert_batch($table, $keys, $values)
|
||||
{
|
||||
$keys = implode(', ', $keys);
|
||||
$sql = "INSERT ALL\n";
|
||||
|
||||
for ($i = 0, $c = count($values); $i < $c; $i++)
|
||||
{
|
||||
$sql .= ' INTO '.$table.' ('.$keys.') VALUES '.$values[$i]."\n";
|
||||
}
|
||||
|
||||
return $sql.'SELECT * FROM dual';
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Delete statement
|
||||
*
|
||||
* Generates a platform-specific delete string from the supplied data
|
||||
*
|
||||
* @param string $table
|
||||
* @return string
|
||||
*/
|
||||
protected function _delete($table)
|
||||
{
|
||||
if ($this->qb_limit)
|
||||
{
|
||||
$this->where('rownum <= ',$this->qb_limit, FALSE);
|
||||
$this->qb_limit = FALSE;
|
||||
}
|
||||
|
||||
return parent::_delete($table);
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* LIMIT
|
||||
*
|
||||
* Generates a platform-specific LIMIT clause
|
||||
*
|
||||
* @param string $sql SQL Query
|
||||
* @return string
|
||||
*/
|
||||
protected function _limit($sql)
|
||||
{
|
||||
if (version_compare($this->version(), '12.1', '>='))
|
||||
{
|
||||
// OFFSET-FETCH can be used only with the ORDER BY clause
|
||||
empty($this->qb_orderby) && $sql .= ' ORDER BY 1';
|
||||
|
||||
return $sql.' OFFSET '.(int) $this->qb_offset.' ROWS FETCH NEXT '.$this->qb_limit.' ROWS ONLY';
|
||||
}
|
||||
|
||||
return 'SELECT * FROM (SELECT inner_query.*, rownum rnum FROM ('.$sql.') inner_query WHERE rownum < '.($this->qb_offset + $this->qb_limit + 1).')'
|
||||
.($this->qb_offset ? ' WHERE rnum >= '.($this->qb_offset + 1): '');
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user