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<?php

/*
* This file is part of open source system FreenetIS
* and it is release under GPLv3 licence.
*
* More info about licence can be found:
* http://www.gnu.org/licenses/gpl-3.0.html
*
* More info about project can be found:
* http://www.freenetis.org/
*/

/**
* Factory class for service layer class that provides access to service
* class instances and manage live cycle of these instances.
*
* @author Ondřej Fibich <fibich@freenetis.org>
* @since 1.2
*/
class ServiceFactory
{
/**
* Namespace that contains all service classes. It must ends with \.
*/
const SERVICE_NS = '\\freenetis\\service\\';

/**
* Pool of service instances.
*
* @var array
*/
private $instances_pool = array();

/**
* Inject (provide) service instance with given class suffix.
*
* @param string $class_suffix class name with namespace relative
* to namespace given by string constant SERVICE_NS
* @return IService service instance
*/
private function inject($class_suffix)
{
// trim invalid name space separators
$t_class_suffix = trim($class_suffix, '\\');
// already initilized?
if (!array_key_exists($t_class_suffix, $this->instances_pool))
{
// load service class - this part will be removed when FreenetIS
// class loader will be able to load classes by their namespace
// and name
$file_name = str_replace('\\', DIRECTORY_SEPARATOR, $t_class_suffix);
require_once APPPATH . '/services/' . $file_name . EXT;
// create service instance with passed factory
$class = self::SERVICE_NS . $t_class_suffix;
$this->instances_pool[$t_class_suffix] = new $class($this);
}
// provide service instance
return $this->instances_pool[$t_class_suffix];
}

/* ************************************************************************\
* Services available to inject.
\* ************************************************************************/

/**
* @return \freenetis\service\core\AclService
*/
public function injectCoreAcl()
{
return $this->inject('core\AclService');
}

/**
* @return \freenetis\service\core\DatabaseService
*/
public function injectCoreDatabase()
{
return $this->inject('core\DatabaseService');
}

/**
* @return \freenetis\service\core\DatabaseInitService
*/
public function injectCoreDatabaseInit()
{
return $this->inject('core\DatabaseInitService');
}

/**
* @return \freenetis\service\core\SetupService
*/
public function injectCoreSetup()
{
return $this->inject('core\SetupService');
}

/**
* @return \freenetis\service\member\ExpirationCalcService
*/
public function injectMemberExpirationCalc()
{
return $this->inject('member\ExpirationCalcService');
}

}
(19-19/24)