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typo3/sysext/extbase/Classes/Object/ObjectManager.php

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+<?php
+namespace TYPO3\CMS\Extbase\Object;
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+use TYPO3\CMS\Extbase\Object\Container\Container;
+
+/**
+ * Implementation of the default Extbase Object Manager
+ *
+ * @template T
+ */
+class ObjectManager implements ObjectManagerInterface
+{
+    /**
+     * @var \TYPO3\CMS\Extbase\Object\Container\Container
+     */
+    protected $objectContainer;
+
+    /**
+     * Constructs a new Object Manager
+     */
+    public function __construct()
+    {
+        $this->objectContainer = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Extbase\Object\Container\Container::class);
+    }
+
+    /**
+     * Serialization (sleep) helper.
+     *
+     * Removes properties of this object from serialization.
+     * This action is necessary, since there might be closures used
+     * in the accordant content objects (e.g. in FLUIDTEMPLATE) which
+     * cannot be serialized. It's fine to reset $this->contentObjects
+     * since elements will be recreated and are just a local cache,
+     * but not required for runtime logic and behaviour.
+     *
+     * @see http://forge.typo3.org/issues/36820
+     * @return array Names of the properties to be serialized
+     * @internal only to be used within Extbase, not part of TYPO3 Core API.
+     */
+    public function __sleep()
+    {
+        // Use get_objects_vars() instead of
+        // a much more expensive Reflection:
+        $properties = get_object_vars($this);
+        unset($properties['objectContainer']);
+        return array_keys($properties);
+    }
+
+    /**
+     * Unserialization (wakeup) helper.
+     *
+     * Initializes the properties again that have been removed by
+     * a call to the __sleep() method on serialization before.
+     *
+     * @see http://forge.typo3.org/issues/36820
+     * @internal only to be used within Extbase, not part of TYPO3 Core API.
+     */
+    public function __wakeup()
+    {
+        $this->__construct();
+    }
+
+    /**
+     * Returns TRUE if an object with the given name is registered
+     *
+     * @param string $objectName Name of the object
+     * @return bool TRUE if the object has been registered, otherwise FALSE
+     * @internal only to be used within Extbase, not part of TYPO3 Core API.
+     */
+    public function isRegistered($objectName)
+    {
+        return class_exists($objectName, true);
+    }
+
+    /**
+     * Returns a fresh or existing instance of the object specified by $objectName.
+     *
+     * @param string|class-string<T> $objectName The name of the object to return an instance of
+     * @param array $constructorArguments
+     * @return object&T The object instance
+     */
+    public function get($objectName, ...$constructorArguments)
+    {
+        if ($objectName === 'DateTime') {
+            $instance = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance($objectName, ...$constructorArguments);
+        } else {
+            $instance = $this->objectContainer->getInstance($objectName, $constructorArguments);
+        }
+        return $instance;
+    }
+
+    /**
+     * Returns the scope of the specified object.
+     *
+     * @param string $objectName The object name
+     * @return int One of the Container::SCOPE_ constants
+     * @throws \TYPO3\CMS\Extbase\Object\Container\Exception\UnknownObjectException
+     */
+    public function getScope($objectName)
+    {
+        if (!$this->isRegistered($objectName)) {
+            throw new \TYPO3\CMS\Extbase\Object\Container\Exception\UnknownObjectException('Object "' . $objectName . '" is not registered.', 1265367590);
+        }
+        return $this->objectContainer->isSingleton($objectName) ? Container::SCOPE_SINGLETON : Container::SCOPE_PROTOTYPE;
+    }
+
+    /**
+     * Create an instance of $className without calling its constructor
+     *
+     * @param string|class-string<T> $className
+     * @return object&T
+     */
+    public function getEmptyObject($className)
+    {
+        return $this->objectContainer->getEmptyObject($className);
+    }
+}