Yuri Kuznetsov
119 lines
3.9 KiB
PHP
119 lines
3.9 KiB
PHP
<?php
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/************************************************************************
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* This file is part of EspoCRM.
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*
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* EspoCRM - Open Source CRM application.
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* Copyright (C) 2014-2020 Yuri Kuznetsov, Taras Machyshyn, Oleksiy Avramenko
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* Website: https://www.espocrm.com
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*
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* EspoCRM is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* EspoCRM is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with EspoCRM. If not, see http://www.gnu.org/licenses/.
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*
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* The interactive user interfaces in modified source and object code versions
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* of this program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU General Public License version 3.
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*
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* In accordance with Section 7(b) of the GNU General Public License version 3,
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* these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
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************************************************************************/
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namespace Espo\Core;
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use Espo\Core\Exceptions\Error;
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/**
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* Creates instance by class name. Uses either Injectable interface or constructor param names to detect
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* which dependencies are needed. Only container services supported as dependencies.
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*/
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class InjectableFactory
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{
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private $container;
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public function __construct(Container $container)
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{
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$this->container = $container;
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}
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public function create(string $className) : object
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{
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return $this->createByClassName($className);
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}
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public function createByClassName(string $className) : object
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{
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if (!class_exists($className)) {
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throw new Error("Class '{$className}' does not exist.");
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}
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$class = new \ReflectionClass($className);
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if ($class->implementsInterface('\\Espo\\Core\\Interfaces\\Injectable')) {
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return $this->createByClassNameInjectable($className);
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}
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return $this->createByClassNameByConstructorParams($className);
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}
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protected function createByClassNameByConstructorParams(string $className)
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{
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$class = new \ReflectionClass($className);
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$dependencyList = [];
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$constructor = $class->getConstructor();
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if (!is_null($constructor)) {
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$params = $constructor->getParameters();
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foreach ($params as $param) {
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$dependencyClassName = $param->getClass();
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if (is_null($dependencyClassName)) {
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if ($param->isDefaultValueAvailable()) {
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$dependencyList[] = $param->getDefaultValue();
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continue;
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}
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}
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$name = $param->getName();
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$dependency = $this->getContainer()->get($name);
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if (!$dependency) {
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throw new Error("InjectableFactory: Could not create {$className}, dependency {$name} not found.");
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}
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$dependencyList[] = $dependency;
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}
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}
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return $class->newInstanceArgs($dependencyList);
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}
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protected function createByClassNameInjectable(string $className)
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{
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$obj = new $className();
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$dependencyList = $obj->getDependencyList();
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foreach ($dependencyList as $name) {
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$obj->inject($name, $this->container->get($name));
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}
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if (method_exists($obj, 'prepare')) {
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$obj->prepare();
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}
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return $obj;
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}
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protected function getContainer()
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{
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return $this->container;
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}
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}
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