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<?php |
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declare(strict_types=1); |
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namespace StefanoTree\NestedSet\AddStrategy; |
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use StefanoTree\Exception\ValidationException; |
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use StefanoTree\NestedSet\Adapter\AdapterInterface; |
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use StefanoTree\NestedSet\NodeInfo; |
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abstract class AddStrategyAbstract implements AddStrategyInterface |
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{ |
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private $adapter; |
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/** |
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* @param AdapterInterface $adapter |
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*/ |
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public function __construct(AdapterInterface $adapter) |
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{ |
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$this->adapter = $adapter; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function add($targetNodeId, array $data = array()) |
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{ |
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$adapter = $this->getAdapter(); |
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$adapter->beginTransaction(); |
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try { |
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$adapter->lockTree(); |
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$targetNodeInfo = $adapter->getNodeInfo($targetNodeId); |
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if (!$targetNodeInfo instanceof NodeInfo) { |
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throw new ValidationException('Target Node does not exists.'); |
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} |
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$this->canCreateNewNode($targetNodeInfo); |
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$this->makeHole($targetNodeInfo); |
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$newNodeId = $adapter->insert($this->createNewNodeNodeInfo($targetNodeInfo), $data); |
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$adapter->commitTransaction(); |
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} catch (\Exception $e) { |
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$adapter->rollbackTransaction(); |
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throw $e; |
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} |
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return $newNodeId; |
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} |
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/** |
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* @param NodeInfo $targetNode |
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* |
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* @throws ValidationException If cannot move node |
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*/ |
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abstract protected function canCreateNewNode(NodeInfo $targetNode): void; |
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/** |
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* @param NodeInfo $targetNode |
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*/ |
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abstract protected function makeHole(NodeInfo $targetNode): void; |
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/** |
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* @param NodeInfo $targetNode |
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* |
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* @return NodeInfo |
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*/ |
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abstract protected function createNewNodeNodeInfo(NodeInfo $targetNode): NodeInfo; |
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/** |
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* @return AdapterInterface |
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*/ |
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protected function getAdapter(): AdapterInterface |
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{ |
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return $this->adapter; |
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} |
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} |
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bartko-s /
stefano-tree
