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Fixes #10 - Refactoring of SimpleCascadeStrategy into smaller classes…
…, better separation of concerns, and more testable Added tests too
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| <?php | ||
|
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| namespace MyCLabs\ACL\ResourceGraph; | ||
|
|
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| use Doctrine\ORM\EntityManager; | ||
| use MyCLabs\ACL\Model\CascadingResource; | ||
| use MyCLabs\ACL\Model\ResourceInterface; | ||
|
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| /** | ||
| * Traverser for resources implementing CascadingResource. | ||
| * | ||
| * CascadingResource don't return all sub-resources (only the direct ones), so we need to do | ||
| * the traversal recursively in this class. | ||
| * | ||
| * @author Matthieu Napoli <[email protected]> | ||
| */ | ||
| class CascadingResourceGraphTraverser implements ResourceGraphTraverser | ||
| { | ||
| /** | ||
| * @var EntityManager | ||
| */ | ||
| private $entityManager; | ||
|
|
||
| /** | ||
| * @var ResourceGraphTraverser | ||
| */ | ||
| private $parentTraverser; | ||
|
|
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| /** | ||
| * @param EntityManager $entityManager | ||
| * @param ResourceGraphTraverser $parentTraverser We need the parent traverser to use it | ||
| * to recursively traverse resources. This is because CascadingResource returns | ||
| * returns only its direct parent and sub-resources. | ||
| */ | ||
| public function __construct(EntityManager $entityManager, ResourceGraphTraverser $parentTraverser) | ||
| { | ||
| $this->entityManager = $entityManager; | ||
| $this->parentTraverser = $parentTraverser; | ||
| } | ||
|
|
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| /** | ||
| * {@inheritdoc} | ||
| */ | ||
| public function getAllParentResources(ResourceInterface $resource) | ||
| { | ||
| if (! $resource instanceof CascadingResource) { | ||
| return []; | ||
| } | ||
|
|
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| $parentResources = []; | ||
|
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| foreach ($resource->getParentResources($this->entityManager) as $parentResource) { | ||
| $parentResources[] = $parentResource; | ||
|
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| // Recursively get its sub-resources | ||
| $parentResources = array_merge( | ||
| $parentResources, | ||
| $this->parentTraverser->getAllParentResources($parentResource) | ||
| ); | ||
| } | ||
|
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| return $this->unique($parentResources); | ||
| } | ||
|
|
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| /** | ||
| * {@inheritdoc} | ||
| */ | ||
| public function getAllSubResources(ResourceInterface $resource) | ||
| { | ||
| if (! $resource instanceof CascadingResource) { | ||
| return []; | ||
| } | ||
|
|
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| $subResources = []; | ||
|
|
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| foreach ($resource->getSubResources($this->entityManager) as $subResource) { | ||
| $subResources[] = $subResource; | ||
|
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| // Recursively get its sub-resources | ||
| $subResources = array_merge( | ||
| $subResources, | ||
| $this->parentTraverser->getAllSubResources($subResource) | ||
| ); | ||
| } | ||
|
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| return $this->unique($subResources); | ||
| } | ||
|
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| /** | ||
| * Array unique but with objects. | ||
| * | ||
| * @param array $array | ||
| * | ||
| * @return array | ||
| */ | ||
| private function unique(array $array) | ||
| { | ||
| $result = []; | ||
|
|
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| foreach ($array as $item) { | ||
| if (! in_array($item, $result, true)) { | ||
| $result[] = $item; | ||
| } | ||
| } | ||
|
|
||
| return $result; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| <?php | ||
|
|
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| namespace MyCLabs\ACL\ResourceGraph; | ||
|
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| use Doctrine\Common\Util\ClassUtils; | ||
| use MyCLabs\ACL\Model\ResourceInterface; | ||
|
|
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| /** | ||
| * This is a traverser that dispatches to other traversers based on the resource class. | ||
| * | ||
| * @author Matthieu Napoli <[email protected]> | ||
| */ | ||
| class ResourceGraphTraverserDispatcher implements ResourceGraphTraverser | ||
| { | ||
| /** | ||
| * @var ResourceGraphTraverser[] | ||
| */ | ||
| private $traversers = []; | ||
|
|
||
| /** | ||
| * {@inheritdoc} | ||
| */ | ||
| public function getAllParentResources(ResourceInterface $resource) | ||
| { | ||
| $traverser = $this->getResourceGraphTraverser($resource); | ||
| if (!$traverser) { | ||
| return []; | ||
| } | ||
|
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| return $traverser->getAllParentResources($resource); | ||
| } | ||
|
|
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| /** | ||
| * {@inheritdoc} | ||
| */ | ||
| public function getAllSubResources(ResourceInterface $resource) | ||
| { | ||
| $traverser = $this->getResourceGraphTraverser($resource); | ||
| if (!$traverser) { | ||
| return []; | ||
| } | ||
|
|
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| return $traverser->getAllSubResources($resource); | ||
| } | ||
|
|
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| /** | ||
| * @param string $entityClass | ||
| * @param ResourceGraphTraverser $resourceGraphTraverser | ||
| */ | ||
| public function setResourceGraphTraverser($entityClass, ResourceGraphTraverser $resourceGraphTraverser) | ||
| { | ||
| $this->traversers[$entityClass] = $resourceGraphTraverser; | ||
| } | ||
|
|
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| /** | ||
| * @param object $resource | ||
| * @return ResourceGraphTraverser|null | ||
| */ | ||
| private function getResourceGraphTraverser($resource) | ||
| { | ||
| $entityClass = ClassUtils::getClass($resource); | ||
|
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| if (isset($this->traversers[$entityClass])) { | ||
| return $this->traversers[$entityClass]; | ||
| } | ||
|
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| // We also try using instanceof so that we cover inheritance and interfaces | ||
| foreach ($this->traversers as $class => $traverser) { | ||
| if ($resource instanceof $class) { | ||
| return $traverser; | ||
| } | ||
| } | ||
|
|
||
| return null; | ||
| } | ||
| } |
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