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<?php |
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namespace Helix\Asana\Api; |
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use Closure; |
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use Helix\Asana\Api; |
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use Helix\Asana\Base\AbstractEntity; |
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use Helix\Asana\Base\Data; |
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/** |
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* Pools entities in runtime memory. |
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*/ |
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class Pool { |
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/** |
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* `[ gid => entity ]` |
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* |
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* @var AbstractEntity[] |
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*/ |
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private $entities = []; |
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/** |
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* `[ key => gid ]` |
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* |
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* @var string[]; |
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*/ |
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private $gids = []; |
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/** |
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* @param AbstractEntity $entity |
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*/ |
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protected function _add (AbstractEntity $entity): void { |
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assert($entity->hasGid()); |
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$gid = $entity->getGid(); |
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$this->entities[$gid] = $entity; |
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$this->gids[$gid] = $gid; |
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} |
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/** |
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* @param AbstractEntity $entity |
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* @param string[] $keys |
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*/ |
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protected function _addKeys (AbstractEntity $entity, ...$keys): void { |
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assert($entity->hasGid()); |
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$this->gids += array_fill_keys($keys, $entity->getGid()); |
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} |
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/** |
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* @param string $key |
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* @param Api|Data $caller For hydration if needed. |
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* @return null|AbstractEntity |
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*/ |
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protected function _get (string $key, $caller) { |
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if (isset($this->gids[$key])) { |
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return $this->entities[$this->gids[$key]]; |
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} |
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unset($caller); |
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return null; |
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} |
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/** |
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* Polls. The entity may be gone by the time this returns (cache race). |
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* |
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* @param string $key |
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* @return bool |
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*/ |
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protected function _has (string $key): bool { |
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return isset($this->gids[$key]); |
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} |
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/** |
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* This is final to ensure pH balance. |
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* |
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* Subclasses must override the internal methods instead of this. |
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* |
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* @param AbstractEntity $entity |
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*/ |
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final public function add (AbstractEntity $entity): void { |
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assert($entity->hasGid()); |
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if (!$entity->isDiff()) { |
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$this->_add($entity); |
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$this->_addKeys($entity, ...$entity->getPoolKeys()); |
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} |
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} |
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/** |
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* This is final to ensure pH balance. |
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* |
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* Subclasses must override the internal methods instead of this. |
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* |
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* @param string $key |
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* @param Api|Data $caller |
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* @param Closure $factory `fn( Api|Data $caller ): null|AbstractEntity` |
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* @return null|mixed|AbstractEntity |
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*/ |
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final public function get (string $key, $caller, Closure $factory) { |
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/** @var AbstractEntity $entity */ |
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if (!$entity = $this->_get($key, $caller) and $entity = $factory($caller)) { |
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$gid = $entity->getGid(); |
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// duplicate with dynamic key? (e.g. "/users/me") |
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if ($this->_has($gid) and $pooled = $this->_get($gid, $caller)) { // poll & fetch |
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if ($pooled->__merge($entity)) { // new data? |
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$this->add($pooled); // renew everything |
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} |
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$this->_addKeys($pooled, $key); |
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return $pooled; |
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} |
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$this->add($entity); |
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$this->_addKeys($entity, $key); |
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} |
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return $entity; |
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} |
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/** |
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* @param string[] $keys |
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*/ |
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public function remove (array $keys): void { |
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foreach ($keys as $key) { |
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unset($this->entities[$key]); |
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unset($this->gids[$key]); |
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} |
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} |
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} |
hfw /
asana
