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<?php
namespace SMW\Connection;
/**
* @license GNU GPL v2+
* @since 3.0
*
* @author mwjames
*/
class CallbackConnectionProvider implements ConnectionProvider {
/**
* @var callable
*/
private $callback;
/**
* @var mixed
*/
private $connection;
/**
* @since 3.0
*
* @param callable $callback
*/
public function __construct( callable $callback ) {
$this->callback = $callback;
}
/**
* @since 3.0
*
* @return mixed
*/
public function getConnection() {
if ( $this->connection === null ) {
$this->connection = call_user_func( $this->callback );
}
return $this->connection;
}
/**
* @since 3.0
*/
public function releaseConnection() {
$this->connection = null;
}
}
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