added files
This commit is contained in:
Ian Christensen
350
system/database/drivers/sqlite3/sqlite3_driver.php
Normal file
350
system/database/drivers/sqlite3/sqlite3_driver.php
Normal file
@ -0,0 +1,350 @@
|
||||
<?php
|
||||
/**
|
||||
* CodeIgniter
|
||||
*
|
||||
* An open source application development framework for PHP
|
||||
*
|
||||
* This content is released under the MIT License (MIT)
|
||||
*
|
||||
* Copyright (c) 2014 - 2018, 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 - 2018, British Columbia Institute of Technology (http://bcit.ca/)
|
||||
* @license http://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');
|
||||
|
||||
/**
|
||||
* SQLite3 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 Andrey Andreev
|
||||
* @link https://codeigniter.com/user_guide/database/
|
||||
*/
|
||||
class CI_DB_sqlite3_driver extends CI_DB {
|
||||
|
||||
/**
|
||||
* Database driver
|
||||
*
|
||||
* @var string
|
||||
*/
|
||||
public $dbdriver = 'sqlite3';
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* ORDER BY random keyword
|
||||
*
|
||||
* @var array
|
||||
*/
|
||||
protected $_random_keyword = array('RANDOM()', 'RANDOM()');
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Non-persistent database connection
|
||||
*
|
||||
* @param bool $persistent
|
||||
* @return SQLite3
|
||||
*/
|
||||
public function db_connect($persistent = FALSE)
|
||||
{
|
||||
if ($persistent)
|
||||
{
|
||||
log_message('debug', 'SQLite3 doesn\'t support persistent connections');
|
||||
}
|
||||
|
||||
try
|
||||
{
|
||||
return ( ! $this->password)
|
||||
? new SQLite3($this->database)
|
||||
: new SQLite3($this->database, SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE, $this->password);
|
||||
}
|
||||
catch (Exception $e)
|
||||
{
|
||||
return FALSE;
|
||||
}
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Database version number
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
public function version()
|
||||
{
|
||||
if (isset($this->data_cache['version']))
|
||||
{
|
||||
return $this->data_cache['version'];
|
||||
}
|
||||
|
||||
$version = SQLite3::version();
|
||||
return $this->data_cache['version'] = $version['versionString'];
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Execute the query
|
||||
*
|
||||
* @todo Implement use of SQLite3::querySingle(), if needed
|
||||
* @param string $sql
|
||||
* @return mixed SQLite3Result object or bool
|
||||
*/
|
||||
protected function _execute($sql)
|
||||
{
|
||||
return $this->is_write_type($sql)
|
||||
? $this->conn_id->exec($sql)
|
||||
: $this->conn_id->query($sql);
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Begin Transaction
|
||||
*
|
||||
* @return bool
|
||||
*/
|
||||
protected function _trans_begin()
|
||||
{
|
||||
return $this->conn_id->exec('BEGIN TRANSACTION');
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Commit Transaction
|
||||
*
|
||||
* @return bool
|
||||
*/
|
||||
protected function _trans_commit()
|
||||
{
|
||||
return $this->conn_id->exec('END TRANSACTION');
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Rollback Transaction
|
||||
*
|
||||
* @return bool
|
||||
*/
|
||||
protected function _trans_rollback()
|
||||
{
|
||||
return $this->conn_id->exec('ROLLBACK');
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Platform-dependent string escape
|
||||
*
|
||||
* @param string
|
||||
* @return string
|
||||
*/
|
||||
protected function _escape_str($str)
|
||||
{
|
||||
return $this->conn_id->escapeString($str);
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Affected Rows
|
||||
*
|
||||
* @return int
|
||||
*/
|
||||
public function affected_rows()
|
||||
{
|
||||
return $this->conn_id->changes();
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Insert ID
|
||||
*
|
||||
* @return int
|
||||
*/
|
||||
public function insert_id()
|
||||
{
|
||||
return $this->conn_id->lastInsertRowID();
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* 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)
|
||||
{
|
||||
return 'SELECT "NAME" FROM "SQLITE_MASTER" WHERE "TYPE" = \'table\''
|
||||
.(($prefix_limit !== FALSE && $this->dbprefix != '')
|
||||
? ' AND "NAME" LIKE \''.$this->escape_like_str($this->dbprefix).'%\' '.sprintf($this->_like_escape_str, $this->_like_escape_chr)
|
||||
: '');
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Fetch Field Names
|
||||
*
|
||||
* @param string $table Table name
|
||||
* @return array
|
||||
*/
|
||||
public function list_fields($table)
|
||||
{
|
||||
// Is there a cached result?
|
||||
if (isset($this->data_cache['field_names'][$table]))
|
||||
{
|
||||
return $this->data_cache['field_names'][$table];
|
||||
}
|
||||
|
||||
if (($result = $this->query('PRAGMA TABLE_INFO('.$this->protect_identifiers($table, TRUE, NULL, FALSE).')')) === FALSE)
|
||||
{
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
$this->data_cache['field_names'][$table] = array();
|
||||
foreach ($result->result_array() as $row)
|
||||
{
|
||||
$this->data_cache['field_names'][$table][] = $row['name'];
|
||||
}
|
||||
|
||||
return $this->data_cache['field_names'][$table];
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Returns an object with field data
|
||||
*
|
||||
* @param string $table
|
||||
* @return array
|
||||
*/
|
||||
public function field_data($table)
|
||||
{
|
||||
if (($query = $this->query('PRAGMA TABLE_INFO('.$this->protect_identifiers($table, TRUE, NULL, FALSE).')')) === FALSE)
|
||||
{
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
$query = $query->result_array();
|
||||
if (empty($query))
|
||||
{
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
$retval = array();
|
||||
for ($i = 0, $c = count($query); $i < $c; $i++)
|
||||
{
|
||||
$retval[$i] = new stdClass();
|
||||
$retval[$i]->name = $query[$i]['name'];
|
||||
$retval[$i]->type = $query[$i]['type'];
|
||||
$retval[$i]->max_length = NULL;
|
||||
$retval[$i]->default = $query[$i]['dflt_value'];
|
||||
$retval[$i]->primary_key = isset($query[$i]['pk']) ? (int) $query[$i]['pk'] : 0;
|
||||
}
|
||||
|
||||
return $retval;
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Error
|
||||
*
|
||||
* Returns an array containing code and message of the last
|
||||
* database error that has occurred.
|
||||
*
|
||||
* @return array
|
||||
*/
|
||||
public function error()
|
||||
{
|
||||
return array('code' => $this->conn_id->lastErrorCode(), 'message' => $this->conn_id->lastErrorMsg());
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Replace statement
|
||||
*
|
||||
* Generates a platform-specific replace string from the supplied data
|
||||
*
|
||||
* @param string $table Table name
|
||||
* @param array $keys INSERT keys
|
||||
* @param array $values INSERT values
|
||||
* @return string
|
||||
*/
|
||||
protected function _replace($table, $keys, $values)
|
||||
{
|
||||
return 'INSERT OR '.parent::_replace($table, $keys, $values);
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Truncate statement
|
||||
*
|
||||
* Generates a platform-specific truncate string from the supplied data
|
||||
*
|
||||
* If the database does not support the TRUNCATE statement,
|
||||
* then this method maps to 'DELETE FROM table'
|
||||
*
|
||||
* @param string $table
|
||||
* @return string
|
||||
*/
|
||||
protected function _truncate($table)
|
||||
{
|
||||
return 'DELETE FROM '.$table;
|
||||
}
|
||||
|
||||
// --------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
* Close DB Connection
|
||||
*
|
||||
* @return void
|
||||
*/
|
||||
protected function _close()
|
||||
{
|
||||
$this->conn_id->close();
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user