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<?php |
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/** |
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* Cycle DataMapper ORM |
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* |
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* @license MIT |
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* @author Anton Titov (Wolfy-J) |
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*/ |
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declare(strict_types=1); |
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namespace Cycle\ORM\Select; |
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use Cycle\ORM\ORMInterface; |
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use Cycle\ORM\Parser\AbstractNode; |
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use Cycle\ORM\Parser\RootNode; |
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use Cycle\ORM\Parser\Typecast; |
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use Cycle\ORM\Schema; |
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use Cycle\ORM\Select\Traits\ColumnsTrait; |
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use Cycle\ORM\Select\Traits\ScopeTrait; |
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use Spiral\Database\Query\SelectQuery; |
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use Spiral\Database\StatementInterface; |
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/** |
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* Primary ORM loader. Loader wraps at top of select query in order to modify it's conditions, joins |
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* and etc based on nested loaders. |
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* |
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* Root load does not load constrain from ORM by default. |
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*/ |
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final class RootLoader extends AbstractLoader |
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{ |
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use ColumnsTrait; |
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use ScopeTrait; |
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/** @var array */ |
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protected $options = [ |
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'load' => true, |
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'scope' => true, |
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]; |
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/** @var SelectQuery */ |
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private $query; |
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/** |
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* @param ORMInterface $orm |
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* @param string $target |
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*/ |
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public function __construct(ORMInterface $orm, string $target) |
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{ |
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parent::__construct($orm, $target); |
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$this->query = $this->getSource()->getDatabase()->select()->from( |
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sprintf('%s AS %s', $this->getSource()->getTable(), $this->getAlias()) |
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); |
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foreach ($this->getEagerRelations() as $relation) { |
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$this->loadRelation($relation, [], false, true); |
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} |
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} |
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/** |
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* Clone the underlying query. |
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*/ |
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public function __clone() |
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{ |
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$this->query = clone $this->query; |
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parent::__clone(); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getAlias(): string |
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{ |
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return $this->target; |
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} |
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/** |
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* Get primary key column identifier (aliased). |
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* |
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* @return string |
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*/ |
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public function getPK(): string |
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{ |
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return $this->getAlias() . '.' . $this->fieldAlias($this->define(Schema::PRIMARY_KEY)); |
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} |
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/** |
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* Returns PK or DISTINCT(PK) if query has any join. |
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* |
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* @return string |
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*/ |
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public function getCountField(): string |
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{ |
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if ($this->isDataDuplicationPossible()) { |
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return sprintf('DISTINCT(%s)', $this->getPK()); |
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} |
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return '*'; |
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} |
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/** |
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* Return base query associated with the loader. |
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* |
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* @return SelectQuery |
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*/ |
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public function getQuery(): SelectQuery |
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{ |
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return $this->query; |
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} |
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/** |
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* Compile query with all needed conditions, columns and etc. |
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* |
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* @return SelectQuery |
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*/ |
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public function buildQuery(): SelectQuery |
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{ |
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return $this->configureQuery(clone $this->query); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function loadData(AbstractNode $node): void |
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{ |
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$statement = $this->buildQuery()->run(); |
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foreach ($statement->fetchAll(StatementInterface::FETCH_NUM) as $row) { |
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$node->parseRow(0, $row); |
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} |
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$statement->close(); |
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// loading child datasets |
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foreach ($this->load as $relation => $loader) { |
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$loader->loadData($node->getNode($relation)); |
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} |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function isLoaded(): bool |
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{ |
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// root loader is always loaded |
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return true; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function configureQuery(SelectQuery $query): SelectQuery |
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{ |
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return parent::configureQuery( |
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$this->mountColumns($query, true, '', true) |
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); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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protected function initNode(): AbstractNode |
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{ |
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$node = new RootNode($this->columnNames(), $this->define(Schema::PRIMARY_KEY)); |
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$typecast = $this->define(Schema::TYPECAST); |
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if ($typecast !== null) { |
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$node->setTypecast(new Typecast($typecast, $this->getSource()->getDatabase())); |
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} |
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return $node; |
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} |
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/** |
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* Relation columns. |
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* |
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* @return array |
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*/ |
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protected function getColumns(): array |
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{ |
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return $this->define(Schema::COLUMNS); |
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} |
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} |
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cycle /
orm
