1 files changed, 84 insertions, 1 deletions

diff --git a/lib/private/appframework/utility/simplecontainer.php b/lib/private/appframework/utility/simplecontainer.php
index 55b9cf7a977..68d52d759e0 100644
--- a/lib/private/appframework/utility/simplecontainer.php
+++ b/lib/private/appframework/utility/simplecontainer.php
@@ -1,7 +1,29 @@
 <?php
+/**
+ * ownCloud - App Framework
+ *
+ * @author Bernhard Posselt
+ * @copyright 2014 Bernhard Posselt <dev@bernhard-posselt.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 
 namespace OC\AppFramework\Utility;
 
+use \OCP\AppFramework\QueryException;
+
 /**
  * Class SimpleContainer
  *
@@ -9,12 +31,71 @@ namespace OC\AppFramework\Utility;
  */
 class SimpleContainer extends \Pimple\Container implements \OCP\IContainer {
 
+
+	/**
+	 * @param ReflectionClass $class the class to instantiate
+	 * @return stdClass the created class
+	 */
+	private function buildClass(\ReflectionClass $class) {
+		$constructor = $class->getConstructor();
+		if ($constructor === null) {
+			return $class->newInstance();
+		} else {
+			$parameters = [];
+			foreach ($constructor->getParameters() as $parameter) {
+				$parameterClass = $parameter->getClass();
+
+				// try to find out if it is a class or a simple parameter
+				if ($parameterClass === null) {
+					$resolveName = $parameter->getName();
+				} else {
+					$resolveName = $parameterClass->name;
+				}
+
+				$parameters[] = $this->query($resolveName);
+			}
+			return $class->newInstanceArgs($parameters);
+		}
+	}
+
+
+	/**
+	 * If a parameter is not registered in the container try to instantiate it
+	 * by using reflection to find out how to build the class
+	 * @param string $name the class name to resolve
+	 * @throws QueryException if the class could not be found or instantiated
+	 */
+	private function resolve($name) {
+		$baseMsg = 'Could not resolve ' . $name . '!';
+		try {
+			$class = new \ReflectionClass($name);
+			if ($class->isInstantiable()) {
+				return $this->buildClass($class);
+			} else {
+				throw new QueryException($baseMsg .
+					' Class can not be instantiated');
+			}
+		} catch(\ReflectionException $e) {
+			throw new QueryException($baseMsg . ' ' . $e->getMessage());
+		}
+	}
+
+
 	/**
 	 * @param string $name name of the service to query for
 	 * @return mixed registered service for the given $name
+	 * @throws QueryExcpetion if the query could not be resolved
 	 */
 	public function query($name) {
-		return $this->offsetGet($name);
+		if ($this->offsetExists($name)) {
+			return $this->offsetGet($name);
+		} else {
+			$object = $this->resolve($name);
+			$this->registerService($name, function () use ($object) {
+				return $object;
+			});
+			return $object;
+		}
 	}
 
 	/**
@@ -44,4 +125,6 @@ class SimpleContainer extends \Pimple\Container implements \OCP\IContainer {
 			$this[$name] = parent::factory($closure);
 		}
 	}
+
+
 }