freenetis-github/system/libraries/ServiceFactory.php @ 18ac9009
| 18ac9009 | Ondřej Fibich | <?php
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/*
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* This file is part of open source system FreenetIS
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* and it is release under GPLv3 licence.
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*
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* More info about licence can be found:
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* http://www.gnu.org/licenses/gpl-3.0.html
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*
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* More info about project can be found:
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* http://www.freenetis.org/
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*/
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/**
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* Factory class for service layer class that provides access to service
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* class instances and manage live cycle of these instances.
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*
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* @author Ondřej Fibich <fibich@freenetis.org>
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* @since 1.2
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*/
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class ServiceFactory
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{
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/**
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* Namespace that contains all service classes. It must ends with \.
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*/
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const SERVICE_NS = '\\freenetis\\service\\';
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/**
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* Pool of service instances.
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*
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* @var array
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*/
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private $instances_pool = array();
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/**
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* Inject (provide) service instance with given class suffix.
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*
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* @param string $class_suffix class name with namespace relative
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* to namespace given by string constant SERVICE_NS
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* @return IService service instance
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*/
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private function inject($class_suffix)
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{
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// trim invalid name space separators
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$t_class_suffix = trim($class_suffix, '\\');
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// already initilized?
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if (!array_key_exists($t_class_suffix, $this->instances_pool))
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{
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// load service class - this part will be removed when FreenetIS
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// class loader will be able to load classes by their namespace
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// and name
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$file_name = str_replace('\\', DIRECTORY_SEPARATOR, $t_class_suffix);
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require_once APPPATH . '/services/' . $file_name . EXT;
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// create service instance with passed factory
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$class = self::SERVICE_NS . $t_class_suffix;
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$this->instances_pool[$t_class_suffix] = new $class($this);
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}
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// provide service instance
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return $this->instances_pool[$t_class_suffix];
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}
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/* ************************************************************************\
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* Services available to inject.
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\* ************************************************************************/
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/**
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* @return \freenetis\service\core\AclService
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*/
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public function injectCoreAcl()
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{
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return $this->inject('core\AclService');
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}
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/**
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* @return \freenetis\service\core\DatabaseService
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*/
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public function injectCoreDatabase()
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{
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return $this->inject('core\DatabaseService');
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}
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/**
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* @return \freenetis\service\core\DatabaseInitService
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*/
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public function injectCoreDatabaseInit()
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{
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return $this->inject('core\DatabaseInitService');
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}
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/**
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* @return \freenetis\service\core\SetupService
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*/
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public function injectCoreSetup()
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{
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return $this->inject('core\SetupService');
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}
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}
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