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<?php
namespace Elastica\Transport;
use Elastica\Connection;
use Elastica\Request;
use Elastica\Exception\InvalidException;
use Elastica\Param;
/**
* Elastica Abstract Transport object
*
* @category Xodoa
* @package Elastica
* @author Nicolas Ruflin <spam@ruflin.com>
*/
abstract class AbstractTransport extends Param
{
/**
* @var \Elastica\Connection
*/
protected $_connection;
/**
* Construct transport
*
* @param \Elastica\Connection $connection Connection object
*/
public function __construct(Connection $connection = null)
{
if ($connection) {
$this->setConnection($connection);
}
}
/**
* @return \Elastica\Connection Connection object
*/
public function getConnection()
{
return $this->_connection;
}
/**
* @param \Elastica\Connection $connection Connection object
*/
public function setConnection(Connection $connection)
{
$this->_connection = $connection;
}
/**
* Executes the transport request
*
* @param \Elastica\Request $request Request object
* @param array $params Hostname, port, path, ...
* @return \Elastica\Response Response object
*/
abstract public function exec(Request $request, array $params);
/**
* Create a transport
*
* The $transport parameter can be one of the following values:
*
* * string: The short name of a transport. For instance "Http", "Memcache" or "Thrift"
* * object: An already instantiated instance of a transport
* * array: An array with a "type" key which must be set to one of the two options. All other
* keys in the array will be set as parameters in the transport instance
*
* @param mixed $transport A transport definition
* @param \Elastica\Connection $connection A connection instance
* @param array $params Parameters for the transport class
* @throws \Elastica\Exception\InvalidException
* @return AbstractTransport
*/
public static function create($transport, Connection $connection, array $params = array())
{
if (is_array($transport) && isset($transport['type'])) {
$transportParams = $transport;
unset($transportParams['type']);
$params = array_replace($params, $transportParams);
$transport = $transport['type'];
}
if (is_string($transport)) {
$className = 'Elastica\\Transport\\' . $transport;
if (!class_exists($className)) {
throw new InvalidException('Invalid transport');
}
$transport = new $className;
}
if ($transport instanceof AbstractTransport) {
$transport->setConnection($connection);
foreach ($params as $key => $value) {
$transport->setParam($key, $value);
}
} else {
throw new InvalidException('Invalid transport');
}
return $transport;
}
}
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