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<?php |
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namespace Helix\Shopify\Base; |
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use Helix\Shopify\Api; |
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use RuntimeException; |
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/** |
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* An entity with an ID that can be saved, updated, and deleted. |
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* |
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*/ |
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abstract class AbstractEntity extends Data { |
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/** |
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* All subclasses must redeclare this to match their types. |
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* |
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* This is also the key used to wrap the instance singularly for API calls. |
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*/ |
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const TYPE = ''; |
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/** |
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* All subclasses must redeclare this to match their REST directory (without container). |
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* |
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* This is also the key used to wrap instance lists for API calls. |
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*/ |
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const DIR = ''; |
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/** |
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* @param Api|Data $caller |
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* @param string $id |
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* @param array $query |
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* @return null|static |
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*/ |
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public static function load ($caller, string $id, array $query = []) { |
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return self::_getApi($caller)->load($caller, static::class, self::DIR . '/' . $id, $query); |
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} |
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/** |
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* @param Api|Data $caller |
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* @param string $path |
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* @param array $query |
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* @return static[] |
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*/ |
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public static function loadAll ($caller, string $path, array $query = []) { |
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return self::_getApi($caller)->loadAll($caller, static::class, $path, $query); |
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} |
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/** |
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* @param AbstractEntity $entity |
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* @return bool |
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* @internal pool |
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*/ |
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final public function __merge (self $entity): bool { |
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return false; // todo |
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} |
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/** |
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* @return string |
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*/ |
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public function __toString (): string { |
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$path = static::DIR . '/' . $this->getId(); |
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if ($container = $this->_container()) { |
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return "{$container}/{$path}"; |
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} |
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return $path; |
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} |
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/** |
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* The container/owner object, if any. |
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* |
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* @return null|AbstractEntity |
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*/ |
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protected function _container () { |
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return null; |
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} |
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/** |
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* Lazy-loads missing fields. |
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* |
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* @param string $field |
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* @return mixed |
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*/ |
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protected function _get (string $field) { |
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if (!array_key_exists($field, $this->data) and $this->hasId()) { |
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$this->_reload($field); |
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} |
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return parent::_get($field); |
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} |
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protected function _onDelete (): void { |
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$this->pool->remove(...$this->getPoolKeys()); |
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} |
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protected function _onSave (): void { |
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$this->pool->add($this); |
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} |
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/** |
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* @param string $field |
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*/ |
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protected function _reload (string $field): void { |
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assert($this->hasId()); |
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$remote = $this->api->get($this, ['fields' => $field]); |
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$this->_setField($field, $remote[static::TYPE][$field]); |
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$this->pool->add($this); |
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} |
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/** |
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* @return null|string |
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*/ |
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final public function getId (): ?string { |
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return $this->data['id'] ?? null; |
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} |
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/** |
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* @return string[] |
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*/ |
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public function getPoolKeys () { |
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return [$this->getId(), (string)$this]; |
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} |
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/** |
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* @return bool |
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*/ |
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final public function hasId (): bool { |
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return isset($this->data['id']); |
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} |
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/** |
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* Fully reloads the entity from Shopify. |
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* |
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* @return $this |
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*/ |
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public function reload () { |
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assert($this->hasId()); |
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$remote = $this->api->get($this); |
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if (!isset($remote[static::TYPE]['id'])) { // deleted? |
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$this->pool->remove(...$this->getPoolKeys()); |
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throw new RuntimeException("{$this} was deleted upstream."); |
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} |
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$this->_setData($remote[static::TYPE]); |
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$this->pool->add($this); |
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return $this; |
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} |
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} |
hfw /
shopify
This check looks for function or method calls that always return null and whose return value is assigned to a variable.
The method
getObject()can return nothing but null, so it makes no sense to assign that value to a variable.The reason is most likely that a function or method is imcomplete or has been reduced for debug purposes.