Refactored draft for Request Management

application/symfony/src/Domain/RequestManagement/Right/RequestedRight.php

@@ -0,0 +1,95 @@
+<?php
+
+namespace App\Domain\RequestManagement\Right;
+
+use App\Entity\Source\SourceInterface;
+use App\Entity\Attribut\CrudAttribut;
+use App\Entity\Attribut\LayerAttribut;
+use App\Entity\Attribut\RecieverAttribut;
+use App\Exception\PreconditionFailedException;
+use App\Exception\NotSetException;
+use App\Repository\Source\SourceRepositoryInterface;
+use App\Domain\RequestManagement\Entity\RequestedEntityInterface;
+
+/**
+ * @author kevinfrantz
+ *
+ * @todo Check out if the performance of this class can be optimized!
+ */
+class RequestedRight implements RequestedRightInterface
+{
+    use CrudAttribut, LayerAttribut, RecieverAttribut;
+
+    /**
+     * @var SourceRepositoryInterface
+     */
+    private $sourceRepository;
+
+    /**
+     * @var SourceInterface
+     */
+    private $source;
+
+    /**
+     * @var RequestedEntityInterface
+     */
+    private $requestedSource;
+
+    /**
+     * @param SourceRepositoryInterface $sourceRepository
+     */
+    public function __construct(SourceRepositoryInterface $sourceRepository)
+    {
+        $this->sourceRepository = $sourceRepository;
+    }
+
+    private function loadSource(): void
+    {
+        $this->source = $this->sourceRepository->findOneByIdOrSlug($this->requestedSource);
+    }
+
+    /**
+     * @throws PreconditionFailedException If the source has no id or slug
+     */
+    private function validateRequestedEntity(): void
+    {
+        if ($this->requestedSource->hasSlug() || $this->requestedSource->hasId()) {
+            return;
+        }
+        throw new PreconditionFailedException(get_class($this->requestedSource).' needs to have a defined attribut id or slug!');
+    }
+
+    /**
+     * Uses some kind of Lazy loading.
+     *
+     * @see https://en.wikipedia.org/wiki/Lazy_loading
+     * {@inheritdoc}
+     * @see \App\Domain\RequestManagement\Right\RequestedRightInterface::getSource()
+     */
+    final public function getSource(): SourceInterface
+    {
+        $this->validateRequestedEntity();
+        $this->loadSource();
+        $this->validateLoad();
+
+        return $this->source;
+    }
+
+    private function validateLoad(): void
+    {
+        if ($this->source) {
+            return;
+        }
+        throw new NotSetException('The Requested Source couldn\'t be found!');
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @see \App\Domain\RequestManagement\Right\RequestedRightInterface::setRequestedEntity()
+     */
+    final public function setRequestedEntity(RequestedEntityInterface $requestedSource)
+    {
+        $this->requestedSource = $requestedSource;
+    }
+}