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<?php |
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namespace Helix\Asana\Base; |
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use Closure; |
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use Helix\Asana\Api\Cache; |
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use LogicException; |
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use RuntimeException; |
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/** |
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* A resource with a GID. |
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*/ |
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abstract class AbstractEntity extends Data { |
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/** |
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* All entity classes must redeclare this to match their `resource_type`. |
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*/ |
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const TYPE = ''; |
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/** |
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* `GET/PUT/DELETE` path. |
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* |
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* @return string |
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*/ |
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abstract public function __toString (): string; |
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/** |
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* Maps lazy-loaded / reloadable mapped {@see Data} to their proper expanded field expression. |
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* |
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* If not set here, the field name is used alone. |
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* |
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* @var string[] |
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*/ |
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protected static $optFields = []; |
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/** |
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* This is only provided for internal functionality related to the cache. |
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* |
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* Merges fresher data into the pooled instance. |
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* |
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* @param string $from |
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* @param AbstractEntity $entity |
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* @internal |
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*/ |
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public function __set (string $from, self $entity) { |
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if ($from === Cache::class and $entity !== $this) { |
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foreach ($entity->data as $field => $value) { |
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if (!isset($this->diff[$field])) { |
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$this->data[$field] = $value; |
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} |
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} |
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} |
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} |
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/** |
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* @param string $addPath |
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* @param array $data |
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* @param string $field |
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* @param array $diff |
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* @return $this |
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* @internal |
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*/ |
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protected function _addWithPost (string $addPath, array $data, string $field, array $diff) { |
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if ($this->hasGid()) { |
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return $this->_setWithPost($addPath, $data, $field); |
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} |
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return $this->_set($field, array_merge($this->data[$field] ?? [], array_values($diff))); |
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} |
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/** |
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* Shortcut to update the cache. |
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* |
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* @internal |
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*/ |
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protected function _cache (): void { |
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$this->api->getCache()->add($this); |
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} |
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/** |
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* Activated by trait. |
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* |
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* @internal |
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*/ |
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protected function _delete (): void { |
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$this->api->delete($this); |
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$this->api->getCache()->remove($this); |
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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 $this->hasGid()) { |
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$this->reload($field); |
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} |
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return parent::_get($field); |
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} |
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/** |
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* @param string $rmPath |
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* @param array $data |
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* @param string $field |
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* @param array|Closure $diff An array to diff, or a filter closure. |
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* @return $this |
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* @internal |
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*/ |
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protected function _removeWithPost (string $rmPath, array $data, string $field, $diff) { |
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if ($this->hasGid()) { |
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return $this->_setWithPost($rmPath, $data, $field); |
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} |
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elseif (is_array($diff)) { |
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return $this->_set($field, array_values(array_diff($this->data[$field] ?? [], $diff))); |
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} |
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return $this->_set($field, array_values(array_filter($this->data[$field] ?? [], $diff))); |
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} |
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/** |
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* Called by create/update traits. |
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* |
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* @param string $dir `POST` directory for creation. |
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* @return $this |
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* @internal |
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*/ |
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protected function _save (string $dir = null) { |
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if (isset($dir)) { |
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$remote = $this->api->post($dir, $this->getDiff(), ['expand' => 'this']); |
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} |
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elseif ($this->isDiff()) { |
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$remote = $this->api->put($this, $this->getDiff(), ['expand' => 'this']); |
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} |
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else { |
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return $this; |
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} |
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/** @var array $remote */ |
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$this->_setData($remote); |
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$this->_cache(); |
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return $this; |
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} |
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protected function _setData (array $data): void { |
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// make sure gid is consistently null|string across all entities. |
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$data['gid'] = empty($data['gid']) ? null : (string)$data['gid']; |
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// the resource type is constant. there's no need to keep it per-instance. |
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unset($data['resource_type']); |
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parent::_setData($data); |
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} |
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/** |
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* Sets/reloads data via `POST` for existing entities. Otherwise stages a value. |
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* |
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* @param string $path |
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* @param array $data |
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* @param string $field |
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* @param mixed $value Ignored for existing entities. |
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* @return $this |
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* @internal |
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*/ |
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protected function _setWithPost (string $path, array $data, string $field, $value = null) { |
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if ($this->hasGid()) { |
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/** @var array $remote */ |
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$remote = $this->api->post($path, $data, ['fields' => static::$optFields[$field] ?? $field]); |
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if (array_key_exists($field, $this->data)) { |
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$this->_setMapped($field, $remote[$field]); |
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$this->_cache(); |
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} |
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return $this; |
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} |
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return $this->_set($field, $value); |
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} |
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/** |
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* Cache keys for the entity. |
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* |
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* @return string[] |
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*/ |
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public function getCacheKeys () { |
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return [$this->getGid(), (string)$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 getGid (): ?string { |
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return $this->data['gid']; |
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} |
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/** |
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* All entity classes must declare a `TYPE` constant. |
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* |
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* @return string |
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*/ |
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final public function getResourceType (): string { |
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return $this::TYPE; |
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} |
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/** |
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* @return bool |
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*/ |
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final public function hasGid (): bool { |
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return isset($this->data['gid']); |
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} |
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/** |
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* Reloads a specific field, or the whole entity. |
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* |
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* @depends after-create |
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* @param string $field |
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* @return $this |
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*/ |
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public function reload (string $field = null) { |
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if (!$this->hasGid()) { |
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throw new LogicException(static::class . " has no GID, it can't be reloaded."); |
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} |
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if (isset($field)) { |
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$optField = static::$optFields[$field] ?? $field; |
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$value = $this->api->get($this, [], ['fields' => $optField])[$field] ?? null; |
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$this->_setMapped($field, $value); |
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} |
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elseif ($remote = $this->api->get($this, [], ['expand' => 'this'])) { |
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$this->_setData($remote); |
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} |
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else { // deleted upstream. |
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$this->api->getCache()->remove($this); |
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throw new RuntimeException("{$this} was deleted upstream."); |
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} |
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$this->_cache(); |
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return $this; |
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} |
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} |
hfw /
asana
