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<?php |
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namespace Maphper\Relation; |
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class One implements \Maphper\Relation { |
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private $mapper; |
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private $parentField; |
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private $localField; |
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private $parentObject; |
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private $data; |
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private $siblings = []; |
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public function __construct(\Maphper\Maphper $mapper, $parentField, $localField, array $criteria = []) { |
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if ($criteria) $mapper = $mapper->filter($this->criteira); |
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$this->mapper = $mapper; |
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$this->parentField = $parentField; |
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$this->localField = $localField; |
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} |
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public function getData($parentObject, &$siblings = null) { |
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//Don't actually fetch the related data, return an instance of $this that will lazy load data when __get is called |
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$clone = clone $this; |
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$clone->parentObject = $parentObject; |
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$siblings[] = $clone; |
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$clone->siblings = $siblings; |
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// var_dump($siblings); |
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return $clone; |
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} |
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private function lazyLoad() { |
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if (!isset($this->data)) { |
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if ($this->parentObject == null) throw new \Exception('Error, no object set'); |
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$this->eagerLoad(); |
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} |
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return $this->data; |
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} |
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private function eagerLoad() { |
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$recordsToLoad = []; |
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//Get a list of records by FK to eager load |
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foreach ($this->siblings as $sibling) { |
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if ($sibling->parentField === $this->parentField) // Ensure that it is only loading records from the same type of relation |
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$recordsToLoad[] = $sibling->parentObject->{$sibling->parentField}; |
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} |
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$recordsToLoad = array_unique($recordsToLoad); |
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//Fetch the results so they're in the cache for the corresponding maphper object |
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$results = $this->mapper->filter([$this->localField => $recordsToLoad]); |
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$this->loadDataIntoSiblings($results); |
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} |
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private function loadDataIntoSiblings($results) { |
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$cache = []; |
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foreach ($results as $result) { |
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$cache[$result->{$this->localField}] = $result; |
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} |
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foreach ($this->siblings as $sibling) { |
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if ($sibling->parentField === $this->parentField && |
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isset($cache[$sibling->parentObject->{$this->parentField}]))$sibling->data = $cache[$sibling->parentObject->{$this->parentField}]; |
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} |
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/* |
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foreach ($this->siblings as $sibling) { |
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if ($sibling->criteria) $sibling->data = $sibling->mapper->filter($sibling->criteria)->filter([$sibling->localField => $sibling->parentObject->{$sibling->parentField}])->item(0); |
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else $sibling->data = $sibling->mapper->filter([$sibling->localField => $sibling->parentObject->{$this->parentField}])->item(0); |
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} |
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*/ |
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} |
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public function __call($func, array $args = []) { |
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if ($this->lazyLoad() == null) return ''; |
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return call_user_func_array([$this->lazyLoad(), $func], $args); |
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} |
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public function __get($name) { |
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if ($this->lazyLoad()) return $this->lazyLoad()->$name; |
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else return null; |
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} |
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public function __isset($name) { |
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return isset($this->lazyLoad()->$name); |
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} |
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public function overwrite($parentObject, &$data) { |
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$this->mapper[] = $data; |
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if (!isset($parentObject->{$this->parentField}) || $parentObject->{$this->parentField} != $data->{$this->localField}) { |
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$parentObject->{$this->parentField} = $data->{$this->localField}; |
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//Trigger an update of the parent object |
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return true; |
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} |
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} |
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public function getFilter($object) { |
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return [$this->parentField => $object->{$this->localField}]; |
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} |
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} |
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Level-2 /
Maphper
Loading history...
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.