--- /dev/null
+<?php
+
+/*
+ * This file is part of Zippy.
+ *
+ * (c) Alchemy <info@alchemy.fr>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Alchemy\Zippy\Resource;
+
+use Alchemy\Zippy\Exception\InvalidArgumentException;
+use Doctrine\Common\Collections\ArrayCollection;
+
+class ResourceCollection extends ArrayCollection
+{
+ private $context;
+ /**
+ * @var bool
+ */
+ private $temporary;
+
+ /**
+ * Constructor
+ * @param string $context
+ * @param Resource[] $elements An array of Resource
+ * @param bool $temporary
+ */
+ public function __construct($context, array $elements, $temporary)
+ {
+ array_walk($elements, function($element) {
+ if (!$element instanceof Resource) {
+ throw new InvalidArgumentException('ResourceCollection only accept Resource elements');
+ }
+ });
+
+ $this->context = $context;
+ $this->temporary = (bool) $temporary;
+ parent::__construct($elements);
+ }
+
+ /**
+ * Returns the context related to the collection
+ *
+ * @return string
+ */
+ public function getContext()
+ {
+ return $this->context;
+ }
+
+ /**
+ * Tells whether the collection is temporary or not.
+ *
+ * A ResourceCollection is temporary when it required a temporary folder to
+ * fetch data
+ *
+ * @return bool
+ */
+ public function isTemporary()
+ {
+ return $this->temporary;
+ }
+
+ /**
+ * Returns true if all resources can be processed in place, false otherwise
+ *
+ * @return bool
+ */
+ public function canBeProcessedInPlace()
+ {
+ if (count($this) === 1) {
+ if (null !== $context = $this->first()->getContextForProcessInSinglePlace()) {
+ $this->context = $context;
+ return true;
+ }
+ }
+
+ foreach ($this as $resource) {
+ if (!$resource->canBeProcessedInPlace($this->context)) {
+ return false;
+ }
+ }
+
+ return true;
+ }
+}