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<?php
/**
*
* @package phpBB3
* @copyright (c) 2013 phpBB Group
* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
*
*/
namespace phpbb\config;
/**
* Manages configuration options with an arbitrary length value stored in a TEXT
* column. In constrast to class \phpbb\config\db, values are never cached and
* prefetched, but every get operation sends a query to the database.
*
* @package phpBB3
*/
class db_text
{
/**
* Database connection
* @var \phpbb\db\driver\driver
*/
protected $db;
/**
* Name of the database table used.
* @var string
*/
protected $table;
/**
* @param \phpbb\db\driver\driver $db Database connection
* @param string $table Table name
*/
public function __construct(\phpbb\db\driver\driver $db, $table)
{
$this->db = $db;
$this->table = $this->db->sql_escape($table);
}
/**
* Sets the configuration option with the name $key to $value.
*
* @param string $key The configuration option's name
* @param string $value New configuration value
*
* @return null
*/
public function set($key, $value)
{
$this->set_array(array($key => $value));
}
/**
* Gets the configuration value for the name $key.
*
* @param string $key The configuration option's name
*
* @return string|null String result on success
* null if there is no such option
*/
public function get($key)
{
$map = $this->get_array(array($key));
return isset($map[$key]) ? $map[$key] : null;
}
/**
* Removes the configuration option with the name $key.
*
* @param string $key The configuration option's name
*
* @return null
*/
public function delete($key)
{
$this->delete_array(array($key));
}
/**
* Mass set configuration options: Receives an associative array,
* treats array keys as configuration option names and associated
* array values as their configuration option values.
*
* @param array $map Map from configuration names to values
*
* @return null
*/
public function set_array(array $map)
{
$this->db->sql_transaction('begin');
foreach ($map as $key => $value)
{
$sql = 'UPDATE ' . $this->table . "
SET config_value = '" . $this->db->sql_escape($value) . "'
WHERE config_name = '" . $this->db->sql_escape($key) . "'";
$result = $this->db->sql_query($sql);
if (!$this->db->sql_affectedrows($result))
{
$sql = 'INSERT INTO ' . $this->table . ' ' . $this->db->sql_build_array('INSERT', array(
'config_name' => $key,
'config_value' => $value,
));
$this->db->sql_query($sql);
}
}
$this->db->sql_transaction('commit');
}
/**
* Mass get configuration options: Receives a set of configuration
* option names and returns the result as a key => value map where
* array keys are configuration option names and array values are
* associated config option values.
*
* @param array $keys Set of configuration option names
*
* @return array Map from configuration names to values
*/
public function get_array(array $keys)
{
$sql = 'SELECT *
FROM ' . $this->table . '
WHERE ' . $this->db->sql_in_set('config_name', $keys, false, true);
$result = $this->db->sql_query($sql);
$map = array();
while ($row = $this->db->sql_fetchrow($result))
{
$map[$row['config_name']] = $row['config_value'];
}
$this->db->sql_freeresult($result);
return $map;
}
/**
* Mass delete configuration options.
*
* @param array $keys Set of configuration option names
*
* @return null
*/
public function delete_array(array $keys)
{
$sql = 'DELETE
FROM ' . $this->table . '
WHERE ' . $this->db->sql_in_set('config_name', $keys, false, true);
$result = $this->db->sql_query($sql);
}
}
|
