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<?php |
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namespace EventEspresso\core\domain\services\graphql\data\loaders; |
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use WPGraphQL\Data\Loader\AbstractDataLoader; |
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/** |
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* Class AbstractLoader |
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*/ |
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abstract class AbstractLoader extends AbstractDataLoader |
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{ |
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protected $primaryKey; |
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/** |
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* @return EE_Base_Class |
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* @throws EE_Error |
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* @throws InvalidArgumentException |
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* @throws InvalidDataTypeException |
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* @throws InvalidInterfaceException |
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*/ |
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abstract protected function getQuery(); |
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/** |
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* @param array $keys |
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* |
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* @return array |
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* @throws EE_Error |
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* @throws InvalidArgumentException |
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* @throws InvalidDataTypeException |
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* @throws InvalidInterfaceException |
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*/ |
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abstract protected function getWhereParams(array $keys); |
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/** |
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* Given array of keys, loads and returns a map consisting of keys from `keys` array and loaded |
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* values |
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* |
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* Note that order of returned values must match exactly the order of keys. |
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* If some entry is not available for given key - it must include null for the missing key. |
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* |
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* For example: |
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* loadKeys(['a', 'b', 'c']) -> ['a' => 'value1, 'b' => null, 'c' => 'value3'] |
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* |
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* @param array $keys |
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* |
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* @return array |
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* @throws \Exception |
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*/ |
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public function loadKeys(array $keys) |
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{ |
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if (empty($keys)) { |
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return $keys; |
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} |
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$args = [ |
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$this->getWhereParams($keys), |
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]; |
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$query = $this->getQuery(); |
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$result = $query->get_all($args); |
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$loadedItems = []; |
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/** |
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* Loop over the items and return an array of loaded items, |
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* where the key is the ID and the value is the Object passed through |
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* the model layer. |
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*/ |
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foreach ($keys as $key) { |
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if (isset($result[ $key ])) { |
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$loadedItems[ $key ] = $result[ $key ]; |
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} else { |
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$loadedItems[ $key ] = null; |
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} |
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} |
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return $loadedItems; |
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} |
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} |
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eventespresso /
event-espresso-core
